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{“name”:“Philidor, exchange variation”,“eco_code”:“C41”,“moves”:}, {“name”:“Philidor, Paulsen attack”,“eco_code”:“C41”,“moves”:}, {“name”:“Philidor, exchange variation”,“eco_code”:“C41”,“moves”:}, {“name”:“Philidor, Berger variation”,“eco_code”:“C41”,“moves”:}, {“name”:“Philidor, Larsen variation”,“eco_code”:“C41”,“moves”:}, {“name”:“Philidor, Nimzovich (Jaenisch) variation”,“eco_code”:“C41”,“moves”:}, {“name”:“Philidor, Improved Hanham variation”,“eco_code”:“C41”,“moves”:}, {“name”:“Philidor, Nimzovich, Sozin variation”,“eco_code”:“C41”,“moves”:}, {“name”:“Philidor, Nimzovich, Larobok variation”,“eco_code”:“C41”,“moves”:}, {“name”:“Philidor, Nimzovich variation”,“eco_code”:“C41”,“moves”:}, {“name”:“Philidor, Nimzovich, Sokolsky variation”,“eco_code”:“C41”,“moves”:}, {“name”:“Philidor, Nimzovich, Rellstab variation”,“eco_code”:“C41”,“moves”:}, {“name”:“Philidor, Nimzovich, Locock variation”,“eco_code”:“C41”,“moves”:}, {“name”:“Philidor, Nimzovich, Klein 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{“name”:“Ponziani, Caro variation”,“eco_code”:“C44”,“moves”:}, {“name”:“Ponziani, Leonhardt variation”,“eco_code”:“C44”,“moves”:}, {“name”:“Ponziani, Steinitz variation”,“eco_code”:“C44”,“moves”:}, {“name”:“Ponziani, Jaenisch counter-attack”,“eco_code”:“C44”,“moves”:}, {“name”:“Ponziani, Fraser defence”,“eco_code”:“C44”,“moves”:}, {“name”:“Ponziani, Reti variation”,“eco_code”:“C44”,“moves”:}, {“name”:“Ponziani, Romanishin variation”,“eco_code”:“C44”,“moves”:}, {“name”:“Ponziani counter-gambit”,“eco_code”:“C44”,“moves”:}, {“name”:“Ponziani counter-gambit, Schmidt attack”,“eco_code”:“C44”,“moves”:}, {“name”:“Ponziani counter-gambit, Cordel variation”,“eco_code”:“C44”,“moves”:}, {“name”:“Scotch opening”,“eco_code”:“C44”,“moves”:}, {“name”:“Scotch, Lolli variation”,“eco_code”:“C44”,“moves”:}, {“name”:“Scotch, Cochrane variation”,“eco_code”:“C44”,“moves”:}, {“name”:“Scotch, Relfsson gambit ('MacLopez’)”,“eco_code”:“C44”,“moves”:}, {“name”:“Scotch, Goering gambit”,“eco_code”:“C44”,“moves”:}, {“name”:“Scotch, Sea-cadet mate”,“eco_code”:“C44”,“moves”:}, {“name”:“Scotch, Goering gambit”,“eco_code”:“C44”,“moves”:}, {“name”:“Scotch, Goering gambit, Bardeleben variation”,“eco_code”:“C44”,“moves”:}, {“name”:“Scotch gambit”,“eco_code”:“C44”,“moves”:}, {“name”:“Scotch gambit, Anderssen (Paulsen, Suhle) counter-attack”,“eco_code”:“C44”,“moves”:}, {“name”:“Scotch gambit”,“eco_code”:“C44”,“moves”:}, {“name”:“Scotch gambit, Cochrane-Shumov defence”,“eco_code”:“C44”,“moves”:}, {“name”:“Scotch gambit, Vitzhum attack”,“eco_code”:“C44”,“moves”:}, {“name”:“Scotch gambit”,“eco_code”:“C44”,“moves”:}, {“name”:“Scotch gambit, Hanneken variation”,“eco_code”:“C44”,“moves”:}, {“name”:“Scotch gambit”,“eco_code”:“C44”,“moves”:}, {“name”:“Scotch gambit, Cochrane variation”,“eco_code”:“C44”,“moves”:}, {“name”:“Scotch gambit, Benima defence”,“eco_code”:“C44”,“moves”:}, {“name”:“Scotch gambit, Dubois-Reti defence”,“eco_code”:“C44”,“moves”:}, {“name”:“Scotch game”,“eco_code”:“C45”,“moves”:}, {“name”:“Scotch, Ghulam Kassim variation”,“eco_code”:“C45”,“moves”:}, {“name”:“Scotch, Pulling counter-attack”,“eco_code”:“C45”,“moves”:}, {“name”:“Scotch, Horwitz attack”,“eco_code”:“C45”,“moves”:}, {“name”:“Scotch, Berger variation”,“eco_code”:“C45”,“moves”:}, {“name”:“Scotch game”,“eco_code”:“C45”,“moves”:}, {“name”:“Scotch, Rosenthal variation”,“eco_code”:“C45”,“moves”:}, {“name”:“Scotch, Fraser attack”,“eco_code”:“C45”,“moves”:}, {“name”:“Scotch, Steinitz variation”,“eco_code”:“C45”,“moves”:}, {“name”:“Scotch, Schmidt variation”,“eco_code”:“C45”,“moves”:}, {“name”:“Scotch, Mieses variation”,“eco_code”:“C45”,“moves”:}, {“name”:“Scotch, Tartakower variation”,“eco_code”:“C45”,“moves”:}, {“name”:“Scotch game”,“eco_code”:“C45”,“moves”:}, {“name”:“Scotch, Blackburne attack”,“eco_code”:“C45”,“moves”:}, {“name”:“Scotch, Gottschall variation”,“eco_code”:“C45”,“moves”:}, {“name”:“Scotch, Paulsen attack”,“eco_code”:“C45”,“moves”:}, {“name”:“Scotch, Paulsen, Gunsberg 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{“name”:“Blackburne shilling gambit”,“eco_code”:“C50”,“moves”:}, {“name”:“Rousseau gambit”,“eco_code”:“C50”,“moves”:}, {“name”:“Hungarian defence”,“eco_code”:“C50”,“moves”:}, {“name”:“Hungarian defence, Tartakower variation”,“eco_code”:“C50”,“moves”:}, {“name”:“Giuoco Piano”,“eco_code”:“C50”,“moves”:}, {“name”:“Giuoco Piano, four knights variation”,“eco_code”:“C50”,“moves”:}, {“name”:“Giuoco Piano, Jerome gambit”,“eco_code”:“C50”,“moves”:}, {“name”:“Giuoco Pianissimo”,“eco_code”:“C50”,“moves”:}, {“name”:“Giuoco Pianissimo, Dubois variation”,“eco_code”:“C50”,“moves”:}, {“name”:“Giuoco Pianissimo”,“eco_code”:“C50”,“moves”:}, {“name”:“Giuoco Pianissimo, Italian four knights variation”,“eco_code”:“C50”,“moves”:}, {“name”:“Giuoco Pianissimo, Canal variation”,“eco_code”:“C50”,“moves”:}, {“name”:“Queen's pawn game”,“eco_code”:“D00”,“moves”:}, {“name”:“Queen's pawn, Mason variation”,“eco_code”:“D00”,“moves”:}, {“name”:“Queen's pawn, Mason variation, Steinitz 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{“name”:“Sicilian, Chekhover, Zaitsev variation”,“eco_code”:“B53”,“moves”:}, {“name”:“Sicilian”,“eco_code”:“B54”,“moves”:}, {“name”:“Sicilian, Prins (Moscow) variation”,“eco_code”:“B54”,“moves”:}, {“name”:“Sicilian, Prins variation, Venice attack”,“eco_code”:“B55”,“moves”:}, {“name”:“Sicilian”,“eco_code”:“B56”,“moves”:}, {“name”:“Sicilian, Venice attack”,“eco_code”:“B56”,“moves”:}, {“name”:“Sicilian”,“eco_code”:“B56”,“moves”:}, {“name”:“Sicilian, Sozin, not Scheveningen”,“eco_code”:“B57”,“moves”:}, {“name”:“Sicilian, Magnus Smith trap”,“eco_code”:“B57”,“moves”:}, {“name”:“Sicilian, Sozin, Benko variation”,“eco_code”:“B57”,“moves”:}, {“name”:“Sicilian, classical”,“eco_code”:“B58”,“moves”:}, {“name”:“Sicilian, Boleslavsky variation”,“eco_code”:“B58”,“moves”:}, {“name”:“Sicilian, Boleslavsky, Louma variation”,“eco_code”:“B58”,“moves”:}, {“name”:“Sicilian, Boleslavsky variation, 7.Nb3”,“eco_code”:“B59”,“moves”:}, {“name”:“French defence”,“eco_code”:“C00”,“moves”:}, {“name”:“French defence, Steiner variation”,“eco_code”:“C00”,“moves”:}, {“name”:“French, Reti (Spielmann) variation”,“eco_code”:“C00”,“moves”:}, {“name”:“French, Steinitz attack”,“eco_code”:“C00”,“moves”:}, {“name”:“French, Labourdonnais variation”,“eco_code”:“C00”,“moves”:}, {“name”:“French defence”,“eco_code”:“C00”,“moves”:}, {“name”:“French, Wing gambit”,“eco_code”:“C00”,“moves”:}, {“name”:“French defence”,“eco_code”:“C00”,“moves”:}, {“name”:“French, Pelikan variation”,“eco_code”:“C00”,“moves”:}, {“name”:“French, Two knights variation”,“eco_code”:“C00”,“moves”:}, {“name”:“French, Chigorin variation”,“eco_code”:“C00”,“moves”:}, {“name”:“French, King's Indian attack”,“eco_code”:“C00”,“moves”:}, {“name”:“French, Reversed Philidor formation”,“eco_code”:“C00”,“moves”:}, {“name”:“French defence”,“eco_code”:“C00”,“moves”:}, {“name”:“Lengfellner system”,“eco_code”:“C00”,“moves”:}, {“name”:“St. George defence”,“eco_code”:“C00”,“moves”:}, {“name”:“French defence”,“eco_code”:“C00”,“moves”:}, {“name”:“French, 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variation”,“eco_code”:“C02”,“moves”:}, {“name”:“French, Paulsen variation”,“eco_code”:“C10”,“moves”:}, {“name”:“French, Marshall variation”,“eco_code”:“C10”,“moves”:}, {“name”:“French, Rubinstein variation”,“eco_code”:“C10”,“moves”:}, {“name”:“French, Fort Knox variation”,“eco_code”:“C10”,“moves”:}, {“name”:“French, Rubinstein variation”,“eco_code”:“C10”,“moves”:}, {“name”:“French, Rubinstein, Capablanca line”,“eco_code”:“C10”,“moves”:}, {“name”:“French, Frere (Becker) variation”,“eco_code”:“C10”,“moves”:}, {“name”:“French defence”,“eco_code”:“C11”,“moves”:}, {“name”:“French, Swiss variation”,“eco_code”:“C11”,“moves”:}, {“name”:“French, Henneberger variation”,“eco_code”:“C11”,“moves”:}, {“name”:“French, Steinitz variation”,“eco_code”:“C11”,“moves”:}, {“name”:“French, Steinitz, Bradford attack”,“eco_code”:“C11”,“moves”:}, {“name”:“French, Steinitz variation”,“eco_code”:“C11”,“moves”:}, {“name”:“French, Steinitz, Brodsky-Jones variation”,“eco_code”:“C11”,“moves”:}, {“name”:“French, Steinitz variation”,“eco_code”:“C11”,“moves”:}, {“name”:“French, Steinitz, Boleslavsky variation”,“eco_code”:“C11”,“moves”:}, {“name”:“French, Steinitz, Gledhill attack”,“eco_code”:“C11”,“moves”:}, {“name”:“French, Burn variation”,“eco_code”:“C11”,“moves”:}, {“name”:“French, MacCutcheon variation”,“eco_code”:“C12”,“moves”:}, {“name”:“French, MacCutcheon, Bogolyubov variation”,“eco_code”:“C12”,“moves”:}, {“name”:“French, MacCutcheon, advance variation”,“eco_code”:“C12”,“moves”:}, {“name”:“French, MacCutcheon, Chigorin variation”,“eco_code”:“C12”,“moves”:}, {“name”:“French, MacCutcheon, Grigoriev variation”,“eco_code”:“C12”,“moves”:}, {“name”:“French, MacCutcheon, Bernstein variation”,“eco_code”:“C12”,“moves”:}, {“name”:“French, MacCutcheon, Janowski variation”,“eco_code”:“C12”,“moves”:}, {“name”:“French, MacCutcheon, Dr. Olland (Dutch) variation”,“eco_code”:“C12”,“moves”:}, {“name”:“French, MacCutcheon, Tartakower variation”,“eco_code”:“C12”,“moves”:}, {“name”:“French, MacCutcheon, Lasker variation”,“eco_code”:“C12”,“moves”:}, {“name”:“French, MacCutcheon, Duras variation”,“eco_code”:“C12”,“moves”:}, {“name”:“French, MacCutcheon, Lasker variation, 8…g6”,“eco_code”:“C12”,“moves”:}, {“name”:“Centre game”,“eco_code”:“C21”,“moves”:}, {“name”:“Centre game, Kieseritsky variation”,“eco_code”:“C21”,“moves”:}, {“name”:“Halasz gambit”,“eco_code”:“C21”,“moves”:}, {“name”:“Danish gambit”,“eco_code”:“C21”,“moves”:}, {“name”:“Danish gambit, Collijn defence”,“eco_code”:“C21”,“moves”:}, {“name”:“Danish gambit, Schlechter defence”,“eco_code”:“C21”,“moves”:}, {“name”:“Danish gambit, Soerensen defence”,“eco_code”:“C21”,“moves”:}, {“name”:“Centre game”,“eco_code”:“C21”,“moves”:}, {“name”:“Centre game”,“eco_code”:“C22”,“moves”:}, {“name”:“Centre game, Paulsen attack”,“eco_code”:“C22”,“moves”:}, {“name”:“Centre game, Charousek variation”,“eco_code”:“C22”,“moves”:}, {“name”:“Centre game, l'Hermet variation”,“eco_code”:“C22”,“moves”:}, {“name”:“Centre game, Berger variation”,“eco_code”:“C22”,“moves”:}, {“name”:“Centre game, Kupreichik variation”,“eco_code”:“C22”,“moves”:}, {“name”:“Centre game, Hall variation”,“eco_code”:“C22”,“moves”:}, {“name”:“Bishop's opening”,“eco_code”:“C23”,“moves”:}, {“name”:“Bishop's opening, Philidor counter-attack”,“eco_code”:“C23”,“moves”:}, {“name”:“Bishop's opening, Lisitsyn variation”,“eco_code”:“C23”,“moves”:}, {“name”:“Bishop's opening, Calabrese counter-gambit”,“eco_code”:“C23”,“moves”:}, {“name”:“Bishop's opening, Calabrese counter-gambit, Jaenisch variation”,“eco_code”:“C23”,“moves”:}, {“name”:“Bishop's opening, Classical variation”,“eco_code”:“C23”,“moves”:}, {“name”:“Bishop's opening, Lopez gambit”,“eco_code”:“C23”,“moves”:}, {“name”:“Bishop's opening, Philidor variation”,“eco_code”:“C23”,“moves”:}, {“name”:“Bishop's opening, Pratt variation”,“eco_code”:“C23”,“moves”:}, {“name”:“Bishop's opening, Lewis counter-gambit”,“eco_code”:“C23”,“moves”:}, {“name”:“Bishop's opening, del Rio variation”,“eco_code”:“C23”,“moves”:}, {“name”:“Bishop's opening, Lewis gambit”,“eco_code”:“C23”,“moves”:}, {“name”:“Bishop's opening, Wing gambit”,“eco_code”:“C23”,“moves”:}, {“name”:“Bishop's opening, MacDonnell double gambit”,“eco_code”:“C23”,“moves”:}, {“name”:“Bishop's opening, Four pawns' gambit”,“eco_code”:“C23”,“moves”:}, {“name”:“Bishop's opening, Berlin defence”,“eco_code”:“C24”,“moves”:}, {“name”:“Bishop's opening, Greco gambit”,“eco_code”:“C24”,“moves”:}, {“name”:“Bishop's opening, Ponziani gambit”,“eco_code”:“C24”,“moves”:}, {“name”:“Bishop's opening, Urusov gambit”,“eco_code”:“C24”,“moves”:}, {“name”:“Bishop's opening, Urusov gambit, Panov variation”,“eco_code”:“C24”,“moves”:}, {“name”:“Vienna game”,“eco_code”:“C25”,“moves”:}, {“name”:“Vienna, Zhuravlev countergambit”,“eco_code”:“C25”,“moves”:}, {“name”:“Vienna game, Max Lange defence”,“eco_code”:“C25”,“moves”:}, {“name”:“Vienna, Paulsen variation”,“eco_code”:“C25”,“moves”:}, {“name”:“Vienna, Fyfe 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variation”,“eco_code”:“C26”,“moves”:}, {“name”:“Vienna game”,“eco_code”:“C26”,“moves”:}, {“name”:“Vienna game”,“eco_code”:“C27”,“moves”:}, {“name”:“Vienna, `Frankenstein-Dracula' variation”,“eco_code”:“C27”,“moves”:}, {“name”:“Vienna, Adams' gambit”,“eco_code”:“C27”,“moves”:}, {“name”:“Vienna game”,“eco_code”:“C27”,“moves”:}, {“name”:“Vienna, Alekhine variation”,“eco_code”:“C27”,“moves”:}, {“name”:“Boden-Kieseritsky gambit”,“eco_code”:“C27”,“moves”:}, {“name”:“Boden-Kieseritsky gambit, Lichtenhein defence”,“eco_code”:“C27”,“moves”:}, {“name”:“Vienna game”,“eco_code”:“C28”,“moves”:}, {“name”:“Vienna gambit”,“eco_code”:“C29”,“moves”:}, {“name”:“Vienna gambit, Kaufmann variation”,“eco_code”:“C29”,“moves”:}, {“name”:“Vienna gambit, Breyer variation”,“eco_code”:“C29”,“moves”:}, {“name”:“Vienna gambit, Paulsen attack”,“eco_code”:“C29”,“moves”:}, {“name”:“Vienna gambit, Bardeleben variation”,“eco_code”:“C29”,“moves”:}, {“name”:“Vienna gambit, Heyde variation”,“eco_code”:“C29”,“moves”:}, {“name”:“Vienna gambit”,“eco_code”:“C29”,“moves”:}, {“name”:“Vienna gambit, Wurzburger trap”,“eco_code”:“C29”,“moves”:}, {“name”:“Vienna gambit, Steinitz variation”,“eco_code”:“C29”,“moves”:}, {“name”:“King's gambit”,“eco_code”:“C30”,“moves”:}, {“name”:“King's Gambit Declined, Keene's defence”,“eco_code”:“C30”,“moves”:}, {“name”:“King's Gambit Declined, Mafia defence”,“eco_code”:“C30”,“moves”:}, {“name”:“King's Gambit Declined, Norwalde variation”,“eco_code”:“C30”,“moves”:}, {“name”:“King's Gambit Declined, Norwalde variation, Buecker gambit”,“eco_code”:“C30”,“moves”:}, {“name”:“King's Gambit Declined, classical variation”,“eco_code”:“C30”,“moves”:}, {“name”:“King's Gambit Declined, classical, Svenonius variation”,“eco_code”:“C30”,“moves”:}, {“name”:“King's Gambit Declined, classical, Hanham variation”,“eco_code”:“C30”,“moves”:}, {“name”:“King's Gambit Declined, classical, 4.c3”,“eco_code”:“C30”,“moves”:}, {“name”:“King's Gambit Declined, classical, Marshall attack”,“eco_code”:“C30”,“moves”:}, {“name”:“King's Gambit Declined, classical counter-gambit”,“eco_code”:“C30”,“moves”:}, {“name”:“King's Gambit Declined, classical, Reti variation”,“eco_code”:“C30”,“moves”:}, {“name”:“King's Gambit Declined, classical, Soldatenkov variation”,“eco_code”:“C30”,“moves”:}, {“name”:“King's Gambit Declined, classical, Heath variation”,“eco_code”:“C30”,“moves”:}, {“name”:“King's Gambit Declined, 2…Nf6”,“eco_code”:“C30”,“moves”:}, {“name”:“King's Gambit Declined, Falkbeer counter-gambit”,“eco_code”:“C31”,“moves”:}, {“name”:“King's Gambit Declined, Falkbeer, Tartakower variation”,“eco_code”:“C31”,“moves”:}, {“name”:“King's Gambit Declined, Falkbeer, Milner-Barry variation”,“eco_code”:“C31”,“moves”:}, {“name”:“King's Gambit Declined, Falkbeer counter-gambit”,“eco_code”:“C31”,“moves”:}, {“name”:“King's Gambit Declined, Nimzovich counter-gambit”,“eco_code”:“C31”,“moves”:}, {“name”:“King's Gambit Declined, Falkbeer, 3…e4”,“eco_code”:“C31”,“moves”:}, {“name”:“King's Gambit Declined, Falkbeer, Rubinstein variation”,“eco_code”:“C31”,“moves”:}, {“name”:“King's Gambit Declined, Falkbeer, Nimzovich variation”,“eco_code”:“C31”,“moves”:}, {“name”:“King's Gambit Declined, Falkbeer, 4.d3”,“eco_code”:“C31”,“moves”:}, {“name”:“King's Gambit Declined, Falkbeer, Morphy gambit”,“eco_code”:“C31”,“moves”:}, {“name”:“King's Gambit Declined, Falkbeer, 5.de”,“eco_code”:“C32”,“moves”:}, {“name”:“King's Gambit Declined, Falkbeer, Alapin variation”,“eco_code”:“C32”,“moves”:}, {“name”:“King's Gambit Declined, Falkbeer, main line, 7…Bf5”,“eco_code”:“C32”,“moves”:}, {“name”:“King's Gambit Declined, Falkbeer, Tarrasch variation”,“eco_code”:“C32”,“moves”:}, {“name”:“King's Gambit Declined, Falkbeer, Charousek gambit”,“eco_code”:“C32”,“moves”:}, {“name”:“King's Gambit Declined, Falkbeer, Charousek variation”,“eco_code”:“C32”,“moves”:}, {“name”:“King's Gambit Declined, Falkbeer, Keres variation”,“eco_code”:“C32”,“moves”:}, {“name”:“King's Gambit Declined, Falkbeer, Reti variation”,“eco_code”:“C32”,“moves”:}, {“name”:“King's gambit accepted”,“eco_code”:“C33”,“moves”:}, {“name”:“King's Gambit Accepted, Tumbleweed gambit”,“eco_code”:“C33”,“moves”:}, {“name”:“King's Gambit Accepted, Orsini gambit”,“eco_code”:“C33”,“moves”:}, {“name”:“King's Gambit Accepted, Pawn's gambit (Stamma gambit)”,“eco_code”:“C33”,“moves”:}, {“name”:“King's Gambit Accepted, Schurig gambit”,“eco_code”:“C33”,“moves”:}, {“name”:“King's Gambit Accepted, Carrera (Basman) gambit”,“eco_code”:“C33”,“moves”:}, {“name”:“King's Gambit Accepted, Villemson (Steinitz) gambit”,“eco_code”:“C33”,“moves”:}, {“name”:“King's Gambit Accepted, Keres (Mason-Steinitz) gambit”,“eco_code”:“C33”,“moves”:}, {“name”:“King's Gambit Accepted, Breyer gambit”,“eco_code”:“C33”,“moves”:}, {“name”:“King's Gambit Accepted, Lesser bishop's (Petroff-Jaenisch-Tartakower) gambit”,“eco_code”:“C33”,“moves”:}, {“name”:“King's Gambit Accepted, bishop's gambit”,“eco_code”:“C33”,“moves”:}, {“name”:“King's Gambit 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Bryan counter-gambit”,“eco_code”:“C33”,“moves”:}, {“name”:“King's Gambit Accepted, bishop's gambit, Bryan counter-gambit”,“eco_code”:“C33”,“moves”:}, {“name”:“King's Gambit Accepted, bishop's gambit, Steinitz defence”,“eco_code”:“C33”,“moves”:}, {“name”:“King's Gambit Accepted, bishop's gambit, Maurian defence”,“eco_code”:“C33”,“moves”:}, {“name”:“King's Gambit Accepted, bishop's gambit, Ruy Lopez defence”,“eco_code”:“C33”,“moves”:}, {“name”:“King's Gambit Accepted, bishop's gambit, Lopez-Gianutio counter-gambit”,“eco_code”:“C33”,“moves”:}, {“name”:“King's Gambit Accepted, Lopez-Gianutio counter-gambit, Hein variation”,“eco_code”:“C33”,“moves”:}, {“name”:“King's Gambit Accepted, bishop's gambit, Bledow variation”,“eco_code”:“C33”,“moves”:}, {“name”:“King's Gambit Accepted, bishop's gambit, Gifford variation”,“eco_code”:“C33”,“moves”:}, {“name”:“King's Gambit Accepted, bishop's gambit, Boren-Svenonius variation”,“eco_code”:“C33”,“moves”:}, {“name”:“King's Gambit Accepted, bishop's gambit, Anderssen variation”,“eco_code”:“C33”,“moves”:}, {“name”:“King's Gambit Accepted, bishop's gambit, Morphy variation”,“eco_code”:“C33”,“moves”:}, {“name”:“King's Gambit Accepted, bishop's gambit, Cozio (Morphy) defence”,“eco_code”:“C33”,“moves”:}, {“name”:“King's Gambit Accepted, bishop's gambit, Bogolyubov variation”,“eco_code”:“C33”,“moves”:}, {“name”:“King's Gambit Accepted, bishop's gambit, Paulsen attack”,“eco_code”:“C33”,“moves”:}, {“name”:“King's Gambit Accepted, bishop's gambit, Jaenisch variation”,“eco_code”:“C33”,“moves”:}, {“name”:“King's Gambit Accepted”,“eco_code”:“C34”,“moves”:}, {“name”:“King's Gambit Accepted, Bonsch-Osmolovsky variation”,“eco_code”:“C34”,“moves”:}, {“name”:“King's Gambit Accepted, Gianutio counter-gambit”,“eco_code”:“C34”,“moves”:}, {“name”:“King's Gambit Accepted, Fischer defence”,“eco_code”:“C34”,“moves”:}, {“name”:“King's Gambit Accepted, Becker defence”,“eco_code”:“C34”,“moves”:}, {“name”:“King's Gambit Accepted, Schallop defence”,“eco_code”:“C34”,“moves”:}, {“name”:“King's Gambit Accepted, Cunningham defence”,“eco_code”:“C35”,“moves”:}, {“name”:“King's Gambit Accepted, Cunningham, Bertin gambit”,“eco_code”:“C35”,“moves”:}, {“name”:“King's Gambit Accepted, Cunningham, three pawns gambit”,“eco_code”:“C35”,“moves”:}, {“name”:“King's Gambit Accepted, Cunningham, Euwe defence”,“eco_code”:“C35”,“moves”:}, {“name”:“King's Gambit Accepted, Abbazia defence (classical defence, modern defence)”,“eco_code”:“C36”,“moves”:}, {“name”:“King's Gambit Accepted, Abbazia defence, modern variation”,“eco_code”:“C36”,“moves”:}, {“name”:“King's Gambit Accepted, Abbazia defence, Botvinnik variation”,“eco_code”:“C36”,“moves”:}, {“name”:“King's Gambit Accepted, Quaade gambit”,“eco_code”:“C37”,“moves”:}, {“name”:“King's Gambit Accepted, Rosentreter gambit”,“eco_code”:“C37”,“moves”:}, {“name”:“King's Gambit Accepted, Soerensen gambit”,“eco_code”:“C37”,“moves”:}, {“name”:“King's Gambit Accepted, King's knight's gambit”,“eco_code”:“C37”,“moves”:}, {“name”:“King's Gambit Accepted, Blachly gambit”,“eco_code”:“C37”,“moves”:}, {“name”:“King's Gambit Accepted, Lolli gambit (wild Muzio gambit)”,“eco_code”:“C37”,“moves”:}, {“name”:“King's Gambit Accepted, Lolli gambit, Young variation”,“eco_code”:“C37”,“moves”:}, {“name”:“King's Gambit Accepted, Ghulam Kassim gambit”,“eco_code”:“C37”,“moves”:}, {“name”:“King's Gambit Accepted, MacDonnell gambit”,“eco_code”:“C37”,“moves”:}, {“name”:“King's Gambit Accepted, Salvio gambit”,“eco_code”:“C37”,“moves”:}, {“name”:“King's Gambit Accepted, Silberschmidt gambit”,“eco_code”:“C37”,“moves”:}, {“name”:“King's Gambit Accepted, Salvio gambit, Anderssen counter-attack”,“eco_code”:“C37”,“moves”:}, {“name”:“King's Gambit Accepted, Cochrane gambit”,“eco_code”:“C37”,“moves”:}, {“name”:“King's Gambit Accepted, Herzfeld gambit”,“eco_code”:“C37”,“moves”:}, {“name”:“King's Gambit Accepted, Muzio gambit”,“eco_code”:“C37”,“moves”:}, {“name”:“King's Gambit Accepted, Muzio gambit, Paulsen variation”,“eco_code”:“C37”,“moves”:}, {“name”:“King's Gambit Accepted, double Muzio gambit”,“eco_code”:“C37”,“moves”:}, {“name”:“King's Gambit Accepted, Muzio gambit, From defence”,“eco_code”:“C37”,“moves”:}, {“name”:“King's Gambit Accepted, Muzio gambit, Holloway defence”,“eco_code”:“C37”,“moves”:}, {“name”:“King's Gambit Accepted, Muzio gambit, Kling and Horwitz counter-attack”,“eco_code”:“C37”,“moves”:}, {“name”:“King's Gambit Accepted, Muzio gambit, Brentano defence”,“eco_code”:“C37”,“moves”:}, {“name”:“King's Gambit Accepted”,“eco_code”:“C38”,“moves”:}, {“name”:“King's Gambit Accepted, Hanstein gambit”,“eco_code”:“C38”,“moves”:}, {“name”:“King's Gambit Accepted, Philidor gambit”,“eco_code”:“C38”,“moves”:}, {“name”:“King's Gambit Accepted, Greco gambit”,“eco_code”:“C38”,“moves”:}, {“name”:“King's Gambit Accepted, Philidor gambit, Schultz variation”,“eco_code”:“C38”,“moves”:}, {“name”:“King's Gambit Accepted”,“eco_code”:“C39”,“moves”:}, {“name”:“King's Gambit Accepted, Allgaier gambit”,“eco_code”:“C39”,“moves”:}, {“name”:“King's Gambit Accepted, Allgaier, Horny defence”,“eco_code”:“C39”,“moves”:}, {“name”:“King's Gambit Accepted, Allgaier, Thorold variation”,“eco_code”:“C39”,“moves”:}, {“name”:“King's Gambit Accepted, Allgaier, Cook variation”,“eco_code”:“C39”,“moves”:}, {“name”:“King's Gambit Accepted, Allgaier, Blackburne gambit”,“eco_code”:“C39”,“moves”:}, {“name”:“King's Gambit Accepted, Allgaier, Walker attack”,“eco_code”:“C39”,“moves”:}, {“name”:“King's Gambit Accepted, Allgaier, Urusov attack”,“eco_code”:“C39”,“moves”:}, {“name”:“King's Gambit Accepted, Allgaier, Schlechter defence”,“eco_code”:“C39”,“moves”:}, {“name”:“King's Gambit Accepted, Kieseritsky, Paulsen defence”,“eco_code”:“C39”,“moves”:}, {“name”:“King's Gambit Accepted, Kieseritsky, long whip (Stockwhip, classical) defence”,“eco_code”:“C39”,“moves”:}, {“name”:“King's Gambit Accepted, Kieseritsky, long whip defence, Jaenisch variation”,“eco_code”:“C39”,“moves”:}, {“name”:“King's Gambit Accepted, Kieseritsky, Brentano (Campbell) defence”,“eco_code”:“C39”,“moves”:}, {“name”:“King's Gambit Accepted, Kieseritsky, Brentano defence, Kaplanek variation”,“eco_code”:“C39”,“moves”:}, {“name”:“King's Gambit Accepted, Kieseritsky, Brentano defence”,“eco_code”:“C39”,“moves”:}, {“name”:“King's Gambit Accepted, Kieseritsky, Brentano defence, Caro variation”,“eco_code”:“C39”,“moves”:}, {“name”:“King's Gambit Accepted, Kieseritsky, Salvio (Rosenthal) defence”,“eco_code”:“C39”,“moves”:}, {“name”:“King's Gambit Accepted, Kieseritsky, Salvio defence, Cozio variation”,“eco_code”:“C39”,“moves”:}, {“name”:“King's Gambit Accepted, Kieseritsky, Polerio defence”,“eco_code”:“C39”,“moves”:}, {“name”:“King's Gambit Accepted, Kieseritsky, Neumann defence”,“eco_code”:“C39”,“moves”:}, {“name”:“King's Gambit Accepted, Kieseritsky, Kolisch defence”,“eco_code”:“C39”,“moves”:}, {“name”:“King's Gambit Accepted, Kieseritsky, Berlin defence”,“eco_code”:“C39”,“moves”:}, {“name”:“King's Gambit Accepted, Kieseritsky, Berlin defence, Riviere variation”,“eco_code”:“C39”,“moves”:}, {“name”:“King's Gambit Accepted, Kieseritsky, Berlin defence, 6.Bc4”,“eco_code”:“C39”,“moves”:}, {“name”:“King's Gambit Accepted, Kieseritsky, Rice gambit”,“eco_code”:“C39”,“moves”:}, {“name”:“Petrov's defence”,“eco_code”:“C42”,“moves”:}, {“name”:“Petrov, French attack”,“eco_code”:“C42”,“moves”:}, {“name”:“Petrov, Kaufmann attack”,“eco_code”:“C42”,“moves”:}, {“name”:“Petrov, Nimzovich attack”,“eco_code”:“C42”,“moves”:}, {“name”:“Petrov, Cozio (Lasker) attack”,“eco_code”:“C42”,“moves”:}, {“name”:“Petrov, classical attack”,“eco_code”:“C42”,“moves”:}, {“name”:“Petrov, classical attack, Chigorin variation”,“eco_code”:“C42”,“moves”:}, {“name”:“Petrov, classical attack, Berger variation”,“eco_code”:“C42”,“moves”:}, {“name”:“Petrov, classical attack, Krause variation”,“eco_code”:“C42”,“moves”:}, {“name”:“Petrov, classical attack, Maroczy variation”,“eco_code”:“C42”,“moves”:}, {“name”:“Petrov, classical attack, Jaenisch variation”,“eco_code”:“C42”,“moves”:}, {“name”:“Petrov, classical attack, Mason variation”,“eco_code”:“C42”,“moves”:}, {“name”:“Petrov, classical attack, Marshall variation”,“eco_code”:“C42”,“moves”:}, {“name”:“Petrov, classical attack, Tarrasch variation”,“eco_code”:“C42”,“moves”:}, {“name”:“Petrov, classical attack, Marshall trap”,“eco_code”:“C42”,“moves”:}, {“name”:“Petrov, classical attack, close variation”,“eco_code”:“C42”,“moves”:}, {“name”:“Petrov, Cochrane gambit”,“eco_code”:“C42”,“moves”:}, {“name”:“Petrov, Paulsen attack”,“eco_code”:“C42”,“moves”:}, {“name”:“Petrov, Damiano variation”,“eco_code”:“C42”,“moves”:}, {“name”:“Petrov three knights game”,“eco_code”:“C42”,“moves”:}, {“name”:“Petrov, Italian variation”,“eco_code”:“C42”,“moves”:}, {“name”:“Petrov, modern (Steinitz) attack”,“eco_code”:“C43”,“moves”:}, {“name”:“Petrov, modern attack, main line”,“eco_code”:“C43”,“moves”:}, {“name”:“Petrov, modern attack, Steinitz variation”,“eco_code”:“C43”,“moves”:}, {“name”:“Petrov, modern attack, Bardeleben variation”,“eco_code”:“C43”,“moves”:}, {“name”:“Petrov, Urusov gambit”,“eco_code”:“C43”,“moves”:}, {“name”:“Petrov, modern attack, Symmetrical variation”,“eco_code”:“C43”,“moves”:}, {“name”:“Petrov, modern attack, Trifunovic variation”,“eco_code”:“C43”,“moves”:}, {“name”:“Four knights, Scotch variation”,“eco_code”:“C47”,“moves”:}, {“name”:“Four knights, Scotch, Krause variation”,“eco_code”:“C47”,“moves”:}, {“name”:“Four knights, Scotch, 4…exd4”,“eco_code”:“C47”,“moves”:}, {“name”:“Four knights, Belgrade gambit”,“eco_code”:“C47”,“moves”:}, {“name”:“Four knights, Spanish variation”,“eco_code”:“C48”,“moves”:}, {“name”:“Four knights, Ranken variation”,“eco_code”:“C48”,“moves”:}, {“name”:“Four knights, Spielmann variation”,“eco_code”:“C48”,“moves”:}, {“name”:“Four knights, Spanish, classical defence”,“eco_code”:“C48”,“moves”:}, {“name”:“Four knights, Bardeleben variation”,“eco_code”:“C48”,“moves”:}, {“name”:“Four knights, Marshall variation”,“eco_code”:“C48”,“moves”:}, {“name”:“Four knights, Rubinstein counter-gambit”,“eco_code”:“C48”,“moves”:}, {“name”:“Four knights, Rubinstein counter-gambit, Bogolyubov variation”,“eco_code”:“C48”,“moves”:}, {“name”:“Four knights, Rubinstein counter-gambit, 5.Be2”,“eco_code”:“C48”,“moves”:}, {“name”:“Four knights, Rubinstein counter-gambit Maroczy variation”,“eco_code”:“C48”,“moves”:}, {“name”:“Four knights, Rubinstein counter-gambit, exchange variation”,“eco_code”:“C48”,“moves”:}, {“name”:“Four knights, Rubinstein counter-gambit, Henneberger variation”,“eco_code”:“C48”,“moves”:}, {“name”:“Four knights, double Ruy Lopez”,“eco_code”:“C49”,“moves”:}, {“name”:“Four knights, Gunsberg counter-attack”,“eco_code”:“C49”,“moves”:}, {“name”:“Four knights, double Ruy Lopez”,“eco_code”:“C49”,“moves”:}, {“name”:“Four knights, Alatortsev variation”,“eco_code”:“C49”,“moves”:}, {“name”:“Four knights”,“eco_code”:“C49”,“moves”:}, {“name”:“Four knights, Janowski variation”,“eco_code”:“C49”,“moves”:}, {“name”:“Four knights, Svenonius variation”,“eco_code”:“C49”,“moves”:}, {“name”:“Four knights, symmetrical variation”,“eco_code”:“C49”,“moves”:}, {“name”:“Four knights, symmetrical, Metger unpin”,“eco_code”:“C49”,“moves”:}, {“name”:“Four knights, symmetrical, Capablanca variation”,“eco_code”:“C49”,“moves”:}, {“name”:“Four knights, symmetrical, Pillsbury variation”,“eco_code”:“C49”,“moves”:}, {“name”:“Four knights, symmetrical, Blake variation”,“eco_code”:“C49”,“moves”:}, {“name”:“Four knights, symmetrical, Tarrasch variation”,“eco_code”:“C49”,“moves”:}, {“name”:“Four knights, symmetrical, Maroczy system”,“eco_code”:“C49”,“moves”:}, {“name”:“Four knights, Nimzovich (Paulsen) variation”,“eco_code”:“C49”,“moves”:}, {“name”:“Evans gambit declined”,“eco_code”:“C51”,“moves”:}, {“name”:“Evans gambit declined, Lange variation”,“eco_code”:“C51”,“moves”:}, {“name”:“Evans gambit declined, Pavlov variation”,“eco_code”:“C51”,“moves”:}, {“name”:“Evans gambit 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{“name”:“two knights defence, Fritz variation”,“eco_code”:“C57”,“moves”:}, {“name”:“two knights defence, Fritz, Gruber variation”,“eco_code”:“C57”,“moves”:}, {“name”:“two knights defence, Lolli attack”,“eco_code”:“C57”,“moves”:}, {“name”:“two knights defence, Pincus variation”,“eco_code”:“C57”,“moves”:}, {“name”:“two knights defence, Fegatello attack”,“eco_code”:“C57”,“moves”:}, {“name”:“two knights defence, Fegatello attack, Leonhardt variation”,“eco_code”:“C57”,“moves”:}, {“name”:“two knights defence, Fegatello attack, Polerio defence”,“eco_code”:“C57”,“moves”:}, {“name”:“two knights defence”,“eco_code”:“C58”,“moves”:}, {“name”:“two knights defence, Kieseritsky variation”,“eco_code”:“C58”,“moves”:}, {“name”:“two knights defence, Yankovich variation”,“eco_code”:“C58”,“moves”:}, {“name”:“two knights defence, Maroczy variation”,“eco_code”:“C58”,“moves”:}, {“name”:“Two knights defence”,“eco_code”:“C58”,“moves”:}, {“name”:“two knights defence, Bogolyubov 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variation”,“eco_code”:“C78”,“moves”:}, {“name”:“Ruy Lopez, Moeller defence”,“eco_code”:“C78”,“moves”:}, {“name”:“Ruy Lopez, Steinitz defence deferred (Russian defence)”,“eco_code”:“C79”,“moves”:}, {“name”:“Ruy Lopez, Steinitz defence deferred, Lipnitsky variation”,“eco_code”:“C79”,“moves”:}, {“name”:“Ruy Lopez, Steinitz defence deferred, Rubinstein variation”,“eco_code”:“C79”,“moves”:}, {“name”:“Ruy Lopez, Steinitz defence deferred, Boleslavsky variation”,“eco_code”:“C79”,“moves”:}, {“name”:“Ruy Lopez, closed defence”,“eco_code”:“C84”,“moves”:}, {“name”:“Ruy Lopez, closed, centre attack”,“eco_code”:“C84”,“moves”:}, {“name”:“Ruy Lopez, closed, Basque gambit (North Spanish variation)”,“eco_code”:“C84”,“moves”:}, {“name”:“Ruy Lopez, Exchange variation doubly deferred (DERLD)”,“eco_code”:“C85”,“moves”:}, {“name”:“Ruy Lopez, Worrall attack”,“eco_code”:“C86”,“moves”:}, {“name”:“Ruy Lopez, Worrall attack, sharp line”,“eco_code”:“C86”,“moves”:}, {“name”:“Ruy Lopez, Worrall attack, solid line”,“eco_code”:“C86”,“moves”:}, {“name”:“Ruy Lopez, closed, Averbach variation”,“eco_code”:“C87”,“moves”:}, {“name”:“Ruy Lopez, closed”,“eco_code”:“C88”,“moves”:}, {“name”:“Ruy Lopez, closed, Leonhardt variation”,“eco_code”:“C88”,“moves”:}, {“name”:“Ruy Lopez, closed, Balla variation”,“eco_code”:“C88”,“moves”:}, {“name”:“Ruy Lopez, closed, 7…d6, 8.d4”,“eco_code”:“C88”,“moves”:}, {“name”:“Ruy Lopez, Noah's ark trap”,“eco_code”:“C88”,“moves”:}, {“name”:“Ruy Lopez, Trajkovic counter-attack”,“eco_code”:“C88”,“moves”:}, {“name”:“Ruy Lopez, closed, 7…O-O”,“eco_code”:“C88”,“moves”:}, {“name”:“Ruy Lopez, closed, anti-Marshall 8.a4”,“eco_code”:“C88”,“moves”:}, {“name”:“Ruy Lopez, closed, 8.c3”,“eco_code”:“C88”,“moves”:}, {“name”:“Ruy Lopez, Marshall counter-attack”,“eco_code”:“C89”,“moves”:}, {“name”:“Ruy Lopez, Marshall counter-attack, 11…c6”,“eco_code”:“C89”,“moves”:}, {“name”:“Ruy Lopez, Marshall, Kevitz variation”,“eco_code”:“C89”,“moves”:}, {“name”:“Ruy Lopez, Marshall, main line, 12.d2d4”,“eco_code”:“C89”,“moves”:}, {“name”:“Ruy Lopez, Marshall, main line, 14…Qh3”,“eco_code”:“C89”,“moves”:}, {“name”:“Ruy Lopez, Marshall, main line, Spassky variation”,“eco_code”:“C89”,“moves”:}, {“name”:“Ruy Lopez, Marshall, Herman Steiner variation”,“eco_code”:“C89”,“moves”:}, {“name”:“Queen's pawn game”,“eco_code”:“D04”,“moves”:}, {“name”:“Queen's pawn game”,“eco_code”:“D05”,“moves”:}, {“name”:“Queen's pawn game, Zukertort variation”,“eco_code”:“D05”,“moves”:}, {“name”:“Queen's pawn game”,“eco_code”:“D05”,“moves”:}, {“name”:“Queen's pawn game, Rubinstein (Colle-Zukertort) variation”,“eco_code”:“D05”,“moves”:}, {“name”:“Colle system”,“eco_code”:“D05”,“moves”:}, {“name”:“Queen's Gambit Declined, Chigorin defence”,“eco_code”:“D07”,“moves”:}, {“name”:“Queen's Gambit Declined, Chigorin defence, Janowski variation”,“eco_code”:“D07”,“moves”:}, {“name”:“Queen's Gambit Declined, Albin counter-gambit”,“eco_code”:“D08”,“moves”:}, {“name”:“Queen's Gambit Declined, Albin counter-gambit, Lasker trap”,“eco_code”:“D08”,“moves”:}, {“name”:“Queen's Gambit Declined, Albin counter-gambit”,“eco_code”:“D08”,“moves”:}, {“name”:“Queen's Gambit Declined, Albin counter-gambit, Alapin variation”,“eco_code”:“D08”,“moves”:}, {“name”:“Queen's Gambit Declined, Albin counter-gambit, Krenosz variation”,“eco_code”:“D08”,“moves”:}, {“name”:“Queen's Gambit Declined, Albin counter-gambit, Janowski variation”,“eco_code”:“D08”,“moves”:}, {“name”:“Queen's Gambit Declined, Albin counter-gambit, Balogh variation”,“eco_code”:“D08”,“moves”:}, {“name”:“Queen's Gambit Declined, Albin counter-gambit, 5.g3”,“eco_code”:“D09”,“moves”:}, {“name”:“Queen's Gambit Declined Slav defence”,“eco_code”:“D10”,“moves”:}, {“name”:“Queen's Gambit Declined Slav defence, Alekhine variation”,“eco_code”:“D10”,“moves”:}, {“name”:“Queen's Gambit Declined Slav, Winawer counter-gambit”,“eco_code”:“D10”,“moves”:}, {“name”:“Queen's Gambit Declined Slav defence, exchange variation”,“eco_code”:“D10”,“moves”:}, {“name”:“Queen's Gambit Declined Slav, 3.Nf3”,“eco_code”:“D11”,“moves”:}, {“name”:“Queen's Gambit Declined Slav, Breyer variation”,“eco_code”:“D11”,“moves”:}, {“name”:“Queen's Gambit Declined Slav, 4.e3”,“eco_code”:“D11”,“moves”:}, {“name”:“Queen's Gambit Declined Slav, 4.e3 Bf5”,“eco_code”:“D12”,“moves”:}, {“name”:“Queen's Gambit Declined Slav, Landau variation”,“eco_code”:“D12”,“moves”:}, {“name”:“Queen's Gambit Declined Slav, exchange variation”,“eco_code”:“D12”,“moves”:}, {“name”:“Queen's Gambit Declined Slav, Amsterdam variation”,“eco_code”:“D12”,“moves”:}, {“name”:“Queen's Gambit Declined Slav, exchange variation”,“eco_code”:“D13”,“moves”:}, {“name”:“Queen's Gambit Declined Slav, exchange variation, 6.Bf4 Bf5”,“eco_code”:“D14”,“moves”:}, {“name”:“Queen's Gambit Declined Slav, exchange, Trifunovic variation”,“eco_code”:“D14”,“moves”:}, {“name”:“Queen's Gambit Declined Slav, 4.Nc3”,“eco_code”:“D15”,“moves”:}, {“name”:“Queen's Gambit Declined Slav, Suechting variation”,“eco_code”:“D15”,“moves”:}, {“name”:“Queen's Gambit Declined Slav, Schlechter variation”,“eco_code”:“D15”,“moves”:}, {“name”:“Queen's Gambit Declined Slav accepted”,“eco_code”:“D15”,“moves”:}, {“name”:“Queen's Gambit Declined Slav, 5.e3 (Alekhine variation)”,“eco_code”:“D15”,“moves”:}, {“name”:“Queen's Gambit Declined Slav, Slav gambit”,“eco_code”:“D15”,“moves”:}, {“name”:“Queen's Gambit Declined Slav, Tolush-Geller gambit”,“eco_code”:“D15”,“moves”:}, {“name”:“Queen's Gambit Declined Slav, Czech defence”,“eco_code”:“D17”,“moves”:}, {“name”:“Queen's Gambit Declined Slav, Krause attack”,“eco_code”:“D17”,“moves”:}, {“name”:“Queen's Gambit Declined Slav, Carlsbad variation”,“eco_code”:“D17”,“moves”:}, {“name”:“Queen's Gambit Declined Slav, Wiesbaden variation”,“eco_code”:“D17”,“moves”:}, {“name”:“Queen's Gambit Declined Slav, Dutch variation”,“eco_code”:“D18”,“moves”:}, {“name”:“Queen's Gambit Declined Slav, Dutch, Lasker variation”,“eco_code”:“D18”,“moves”:}, {“name”:“Queen's Gambit Declined Slav, Dutch variation”,“eco_code”:“D19”,“moves”:}, {“name”:“Queen's Gambit Declined Slav, Dutch variation, main line”,“eco_code”:“D19”,“moves”:}, {“name”:“Queen's Gambit Declined Slav, Dutch, Saemisch variation”,“eco_code”:“D19”,“moves”:}, {“name”:“Queen's gambit accepted”,“eco_code”:“D20”,“moves”:}, {“name”:“Queen's Gambit Accepted, 3.e4”,“eco_code”:“D20”,“moves”:}, {“name”:“Queen's Gambit Accepted, Linares variation”,“eco_code”:“D20”,“moves”:}, {“name”:“Queen's Gambit Accepted, Schwartz defence”,“eco_code”:“D20”,“moves”:}, {“name”:“Queen's Gambit Accepted, 3.Nf3”,“eco_code”:“D21”,“moves”:}, {“name”:“Queen's Gambit Accepted, Ericson variation”,“eco_code”:“D21”,“moves”:}, {“name”:“Queen's Gambit Accepted, Alekhine defense, Borisenko-Furman variation”,“eco_code”:“D21”,“moves”:}, {“name”:“Queen's Gambit Accepted, Alekhine defence”,“eco_code”:“D22”,“moves”:}, {“name”:“Queen's Gambit Accepted, Alekhine defence, Alatortsev variation”,“eco_code”:“D22”,“moves”:}, {“name”:“Queen's Gambit Accepted, Haberditz variation”,“eco_code”:“D22”,“moves”:}, {“name”:“Queen's gambit accepted”,“eco_code”:“D23”,“moves”:}, {“name”:“Queen's Gambit Accepted, Mannheim variation”,“eco_code”:“D23”,“moves”:}, {“name”:“Queen's Gambit Accepted, 4.Nc3”,“eco_code”:“D24”,“moves”:}, {“name”:“Queen's Gambit Accepted, Bogolyubov variation”,“eco_code”:“D24”,“moves”:}, {“name”:“Queen's Gambit Accepted, 4.e3”,“eco_code”:“D25”,“moves”:}, {“name”:“Queen's Gambit Accepted, Smyslov variation”,“eco_code”:“D25”,“moves”:}, {“name”:“Queen's Gambit Accepted, Janowsky-Larsen variation”,“eco_code”:“D25”,“moves”:}, {“name”:“Queen's Gambit Accepted, Flohr variation”,“eco_code”:“D25”,“moves”:}, {“name”:“Queen's Gambit Accepted, 4…e6”,“eco_code”:“D26”,“moves”:}, {“name”:“Queen's Gambit Accepted, classical variation”,“eco_code”:“D26”,“moves”:}, {“name”:“Queen's Gambit Accepted, classical, Furman variation”,“eco_code”:“D26”,“moves”:}, {“name”:“Queen's Gambit Accepted, classical variation, 6.O-O”,“eco_code”:“D26”,“moves”:}, {“name”:“Queen's Gambit Accepted, classical, Steinitz variation”,“eco_code”:“D26”,“moves”:}, {“name”:“Queen's Gambit Accepted, classical, 6…a6”,“eco_code”:“D27”,“moves”:}, {“name”:“Queen's Gambit Accepted, classical, Rubinstein variation”,“eco_code”:“D27”,“moves”:}, {“name”:“Queen's Gambit Accepted, classical, Geller variation”,“eco_code”:“D27”,“moves”:}, {“name”:“Queen's Gambit Accepted, classical, 7.Qe2”,“eco_code”:“D28”,“moves”:}, {“name”:“Queen's Gambit Accepted, classical, 7…b5”,“eco_code”:“D28”,“moves”:}, {“name”:“Queen's Gambit Accepted, classical, Flohr variation”,“eco_code”:“D28”,“moves”:}, {“name”:“Queen's Gambit Accepted, classical, 8…Bb7”,“eco_code”:“D29”,“moves”:}, {“name”:“Queen's Gambit Accepted, classical, Smyslov variation”,“eco_code”:“D29”,“moves”:}, {“name”:“Queen's gambit declined”,“eco_code”:“D30”,“moves”:}, {“name”:“Queen's Gambit Declined Slav”,“eco_code”:“D30”,“moves”:}, {“name”:“Queen's Gambit Declined, Stonewall variation”,“eco_code”:“D30”,“moves”:}, {“name”:“Queen's Gambit Declined Slav”,“eco_code”:“D30”,“moves”:}, {“name”:“Queen's Gambit Declined Slav, Semmering variation”,“eco_code”:“D30”,“moves”:}, {“name”:“Queen's Gambit Declined, Spielmann variation”,“eco_code”:“D30”,“moves”:}, {“name”:“Queen's Gambit Declined”,“eco_code”:“D30”,“moves”:}, {“name”:“Queen's Gambit Declined, Capablanca variation”,“eco_code”:“D30”,“moves”:}, {“name”:“Queen's Gambit Declined, Vienna variation”,“eco_code”:“D30”,“moves”:}, {“name”:“Queen's Gambit Declined, Capablanca-Duras variation”,“eco_code”:“D30”,“moves”:}, {“name”:“Queen's Gambit Declined, Hastings variation”,“eco_code”:“D30”,“moves”:}, {“name”:“Queen's Gambit Declined, 3.Nc3”,“eco_code”:“D31”,“moves”:}, {“name”:“Queen's Gambit Declined, Janowski variation”,“eco_code”:“D31”,“moves”:}, {“name”:“Queen's Gambit Declined, Alapin variation”,“eco_code”:“D31”,“moves”:}, {“name”:“Queen's Gambit Declined, Charousek (Petrosian) variation”,“eco_code”:“D31”,“moves”:}, {“name”:“Queen's Gambit Declined, semi-Slav”,“eco_code”:“D31”,“moves”:}, {“name”:“Queen's Gambit Declined, semi-Slav, Noteboom variation”,“eco_code”:“D31”,“moves”:}, {“name”:“Queen's Gambit Declined, semi-Slav, Koomen variation”,“eco_code”:“D31”,“moves”:}, {“name”:“Queen's Gambit Declined, semi-Slav, Junge variation”,“eco_code”:“D31”,“moves”:}, {“name”:“Queen's Gambit Declined, semi-Slav, Abrahams variation”,“eco_code”:“D31”,“moves”:}, {“name”:“Queen's Gambit Declined, semi-Slav, Marshall gambit”,“eco_code”:“D31”,“moves”:}, {“name”:“Queen's Gambit Declined, 3…Nf6”,“eco_code”:“D35”,“moves”:}, {“name”:“Queen's Gambit Declined, Harrwitz attack”,“eco_code”:“D35”,“moves”:}, {“name”:“Queen's Gambit Declined, exchange variation”,“eco_code”:“D35”,“moves”:}, {“name”:“Queen's Gambit Declined, exchange, Saemisch variation”,“eco_code”:“D35”,“moves”:}, {“name”:“Queen's Gambit Declined, exchange, positional line”,“eco_code”:“D35”,“moves”:}, {“name”:“Queen's Gambit Declined, exchange, chameleon variation”,“eco_code”:“D35”,“moves”:}, {“name”:“Queen's Gambit Declined, exchange, positional line, 5…c6”,“eco_code”:“D35”,“moves”:}, {“name”:“Queen's Gambit Declined, exchange, positional line, 6.Qc2”,“eco_code”:“D36”,“moves”:}, {“name”:“Queen's Gambit Declined, 4.Nf3”,“eco_code”:“D37”,“moves”:}, {“name”:“Queen's Gambit Declined, classical variation (5.Bf4)”,“eco_code”:“D37”,“moves”:}, {“name”:“Queen's Gambit Declined semi-Slav”,“eco_code”:“D43”,“moves”:}, {“name”:“Queen's Gambit Declined semi-Slav, Hastings variation”,“eco_code”:“D43”,“moves”:}, {“name”:“Queen's Gambit Declined semi-Slav, 5.Bg5 dc”,“eco_code”:“D44”,“moves”:}, {“name”:“Queen's Gambit Declined semi-Slav, Botvinnik system (anti-Meran)”,“eco_code”:“D44”,“moves”:}, {“name”:“Queen's Gambit Declined semi-Slav, Ekstrom variation”,“eco_code”:“D44”,“moves”:}, {“name”:“Queen's Gambit Declined semi-Slav, anti-Meran gambit”,“eco_code”:“D44”,“moves”:}, {“name”:“Queen's Gambit Declined semi-Slav, anti-Meran, Lilienthal variation”,“eco_code”:“D44”,“moves”:}, {“name”:“Queen's Gambit Declined semi-Slav, anti-Meran, Szabo variation”,“eco_code”:“D44”,“moves”:}, {“name”:“Queen's Gambit Declined semi-Slav, anti-Meran, Alatortsev system”,“eco_code”:“D44”,“moves”:}, {“name”:“Queen's Gambit Declined semi-Slav, 5.e3”,“eco_code”:“D45”,“moves”:}, {“name”:“Queen's Gambit Declined semi-Slav, stonewall defence”,“eco_code”:“D45”,“moves”:}, {“name”:“Queen's Gambit Declined semi-Slav, accelerated Meran (Alekhine variation)”,“eco_code”:“D45”,“moves”:}, {“name”:“Queen's Gambit Declined semi-Slav, 5…Nd7”,“eco_code”:“D45”,“moves”:}, {“name”:“Queen's Gambit Declined semi-Slav, Stoltz variation”,“eco_code”:“D45”,“moves”:}, {“name”:“Queen's Gambit Declined semi-Slav, Rubinstein (anti-Meran) system”,“eco_code”:“D45”,“moves”:}, {“name”:“Queen's Gambit Declined semi-Slav, 6.Bd3”,“eco_code”:“D46”,“moves”:}, {“name”:“Queen's Gambit Declined semi-Slav, Bogolyubov variation”,“eco_code”:“D46”,“moves”:}, {“name”:“Queen's Gambit Declined semi-Slav, Romih variation”,“eco_code”:“D46”,“moves”:}, {“name”:“Queen's Gambit Declined semi-Slav, Chigorin defence”,“eco_code”:“D46”,“moves”:}, {“name”:“Queen's Gambit Declined semi-Slav, 7.Bc4”,“eco_code”:“D47”,“moves”:}, {“name”:“Queen's Gambit Declined semi-Slav, Meran variation”,“eco_code”:“D47”,“moves”:}, {“name”:“Queen's Gambit Declined semi-Slav, neo-Meran (Lundin variation)”,“eco_code”:“D47”,“moves”:}, {“name”:“Queen's Gambit Declined semi-Slav, Meran, Wade variation”,“eco_code”:“D47”,“moves”:}, {“name”:“Queen's Gambit Declined semi-Slav, Meran, 8…a6”,“eco_code”:“D48”,“moves”:}, {“name”:“Queen's Gambit Declined semi-Slav, Meran, Pirc variation”,“eco_code”:“D48”,“moves”:}, {“name”:“Queen's Gambit Declined semi-Slav, Meran”,“eco_code”:“D48”,“moves”:}, {“name”:“Queen's Gambit Declined semi-Slav, Meran, Reynolds' variation”,“eco_code”:“D48”,“moves”:}, {“name”:“Queen's Gambit Declined semi-Slav, Meran, old main line”,“eco_code”:“D48”,“moves”:}, {“name”:“Queen's Gambit Declined semi-Slav, Meran, Blumenfeld variation”,“eco_code”:“D49”,“moves”:}, {“name”:“Queen's Gambit Declined semi-Slav, Meran, Rabinovich variation”,“eco_code”:“D49”,“moves”:}, {“name”:“Queen's Gambit Declined semi-Slav, Meran, Sozin variation”,“eco_code”:“D49”,“moves”:}, {“name”:“Queen's Gambit Declined semi-Slav, Meran, Stahlberg variation”,“eco_code”:“D49”,“moves”:}, {“name”:“Queen's Gambit Declined semi-Slav, Meran, Sozin variation”,“eco_code”:“D49”,“moves”:}, {“name”:“Queen's Gambit Declined semi-Slav, Meran, Rellstab attack”,“eco_code”:“D49”,“moves”:}, {“name”:“Queen's Gambit Declined, 4.Bg5”,“eco_code”:“D50”,“moves”:}, {“name”:“Queen's Gambit Declined, Been-Koomen variation”,“eco_code”:“D50”,“moves”:}, {“name”:“Queen's Gambit Declined, Semi-Tarrasch, Krause variation”,“eco_code”:“D50”,“moves”:}, {“name”:“Queen's Gambit Declined, Semi-Tarrasch, Primitive Pillsbury variation”,“eco_code”:“D50”,“moves”:}, {“name”:“Queen's Gambit Declined, Semi-Tarrasch”,“eco_code”:“D50”,“moves”:}, {“name”:“Queen's Gambit Declined, Canal (Venice) variation”,“eco_code”:“D50”,“moves”:}, {“name”:“Queen's Gambit Declined, 4.Bg5 Nbd7”,“eco_code”:“D51”,“moves”:}, {“name”:“Queen's Gambit Declined, Rochlin variation”,“eco_code”:“D51”,“moves”:}, {“name”:“Queen's Gambit Declined, Alekhine variation”,“eco_code”:“D51”,“moves”:}, {“name”:“Queen's Gambit Declined”,“eco_code”:“D51”,“moves”:}, {“name”:“Queen's Gambit Declined, Manhattan variation”,“eco_code”:“D51”,“moves”:}, {“name”:“Queen's Gambit Declined, 5…c6”,“eco_code”:“D51”,“moves”:}, {“name”:“Queen's Gambit Declined, Capablanca anti-Cambridge Springs variation”,“eco_code”:“D51”,“moves”:}, {“name”:“Queen's Gambit Declined”,“eco_code”:“D52”,“moves”:}, {“name”:“Queen's Gambit Declined, Cambridge Springs defence”,“eco_code”:“D52”,“moves”:}, {“name”:“Queen's Gambit Declined, Cambridge Springs defence, Bogoljubow variation”,“eco_code”:“D52”,“moves”:}, {“name”:“Queen's Gambit Declined, Cambridge Springs defence, Argentine variation”,“eco_code”:“D52”,“moves”:}, {“name”:“Queen's Gambit Declined, Cambridge Springs defence, Rubinstein variation”,“eco_code”:“D52”,“moves”:}, {“name”:“Queen's Gambit Declined, Cambridge Springs defence, Capablanca variation”,“eco_code”:“D52”,“moves”:}, {“name”:“Queen's Gambit Declined, Cambridge Springs defence, 7.cd”,“eco_code”:“D52”,“moves”:}, {“name”:“Queen's Gambit Declined, Cambridge Springs defence, Yugoslav variation”,“eco_code”:“D52”,“moves”:}, {“name”:“Queen's Gambit Declined, 4.Bg5 Be7”,“eco_code”:“D53”,“moves”:}, {“name”:“Queen's Gambit Declined, Lasker variation”,“eco_code”:“D53”,“moves”:}, {“name”:“Queen's Gambit Declined, 4.Bg5 Be7, 5.e3 O-O”,“eco_code”:“D53”,“moves”:}, {“name”:“Queen's Gambit Declined, Anti-neo-orthodox variation”,“eco_code”:“D54”,“moves”:}, {“name”:“Queen's Gambit Declined, 6.Nf3”,“eco_code”:“D55”,“moves”:}, {“name”:“Queen's Gambit Declined, Pillsbury attack”,“eco_code”:“D55”,“moves”:}, {“name”:“Queen's Gambit Declined, Neo-orthodox variation”,“eco_code”:“D55”,“moves”:}, {“name”:“Queen's Gambit Declined, Neo-orthodox variation, 7.Bxf6”,“eco_code”:“D55”,“moves”:}, {“name”:“Queen's Gambit Declined, Petrosian variation”,“eco_code”:“D55”,“moves”:}, {“name”:“Queen's Gambit Declined, Neo-orthodox variation, 7.Bh4”,“eco_code”:“D55”,“moves”:}, {“name”:“Neo-Gruenfeld defence”,“eco_code”:“D70”,“moves”:}, {“name”:“Neo-Gruenfeld (Kemeri) defence”,“eco_code”:“D70”,“moves”:}, {“name”:“Neo-Gruenfeld, 5.Nf3”,“eco_code”:“D73”,“moves”:}, {“name”:“Gruenfeld defence”,“eco_code”:“D80”,“moves”:}, {“name”:“Gruenfeld, Spike gambit”,“eco_code”:“D80”,“moves”:}, {“name”:“Gruenfeld, Stockholm variation”,“eco_code”:“D80”,“moves”:}, {“name”:“Gruenfeld, Lundin variation”,“eco_code”:“D80”,“moves”:}, {“name”:“Gruenfeld, Russian variation”,“eco_code”:“D81”,“moves”:}, {“name”:“Gruenfeld, 4.Bf4”,“eco_code”:“D82”,“moves”:}, {“name”:“Gruenfeld, Three knights variation”,“eco_code”:“D90”,“moves”:}, {“name”:“Gruenfeld, Schlechter variation”,“eco_code”:“D90”,“moves”:}, {“name”:“Gruenfeld, Three knights variation”,“eco_code”:“D90”,“moves”:}, {“name”:“Gruenfeld, Flohr variation”,“eco_code”:“D90”,“moves”:}, {“name”:“Gruenfeld, 5.Bg5”,“eco_code”:“D91”,“moves”:}, {“name”:“Gruenfeld, 5.Bf4”,“eco_code”:“D92”,“moves”:}, {“name”:“Gruenfeld with Bf4 e3”,“eco_code”:“D93”,“moves”:}, {“name”:“Gruenfeld, 5.e3”,“eco_code”:“D94”,“moves”:}, {“name”:“Gruenfeld, Makogonov variation”,“eco_code”:“D94”,“moves”:}, {“name”:“Gruenfeld, Opovcensky variation”,“eco_code”:“D94”,“moves”:}, {“name”:“Gruenfeld with e3 Bd3”,“eco_code”:“D94”,“moves”:}, {“name”:“Gruenfeld, Smyslov defence”,“eco_code”:“D94”,“moves”:}, {“name”:“Gruenfeld, Flohr defence”,“eco_code”:“D94”,“moves”:}, {“name”:“Gruenfeld with e3 & Qb3”,“eco_code”:“D95”,“moves”:}, {“name”:“Gruenfeld, Botvinnik variation”,“eco_code”:“D95”,“moves”:}, {“name”:“Gruenfeld, Pachman variation”,“eco_code”:“D95”,“moves”:}, {“name”:“Gruenfeld defence, Smyslov, main line”,“eco_code”:“D99”,“moves”:}, {“name”:“Gruenfeld defence, Smyslov, Yugoslav variation”,“eco_code”:“D99”,“moves”:}, {“name”:“Catalan, closed”,“eco_code”:“E01”,“moves”:}, {“name”:“Catalan, open, 5.Qa4”,“eco_code”:“E02”,“moves”:}, {“name”:“Catalan, open, Alekhine variation”,“eco_code”:“E03”,“moves”:}, {“name”:“Catalan, open, 5.Qa4 Nbd7, 6.Qxc4”,“eco_code”:“E03”,“moves”:}, {“name”:“Catalan, open, 5.Nf3”,“eco_code”:“E04”,“moves”:}, {“name”:“Catalan, open, classical line”,“eco_code”:“E05”,“moves”:}, {“name”:“Queen's Indian defence”,“eco_code”:“E12”,“moves”:}, {“name”:“Queen's Indian, Miles variation”,“eco_code”:“E12”,“moves”:}, {“name”:“Queen's Indian, Petrosian system”,“eco_code”:“E12”,“moves”:}, {“name”:“Queen's Indian, 4.Nc3”,“eco_code”:“E12”,“moves”:}, {“name”:“Queen's Indian, 4.Nc3, Botvinnik variation”,“eco_code”:“E12”,“moves”:}, {“name”:“Queen's Indian, 4.Nc3, main line”,“eco_code”:“E13”,“moves”:}, {“name”:“Queen's Indian, 4.e3”,“eco_code”:“E14”,“moves”:}, {“name”:“Queen's Indian, Averbakh variation”,“eco_code”:“E14”,“moves”:}, {“name”:“Queen's Indian, 4.g3”,“eco_code”:“E15”,“moves”:}, {“name”:“Queen's Indian, Nimzovich variation (exaggerated fianchetto)”,“eco_code”:“E15”,“moves”:}, {“name”:“Queen's Indian, 4.g3 Bb7”,“eco_code”:“E15”,“moves”:}, {“name”:“Queen's Indian, Rubinstein variation”,“eco_code”:“E15”,“moves”:}, {“name”:“Queen's Indian, Buerger variation”,“eco_code”:“E15”,“moves”:}, {“name”:“Queen's Indian, Capablanca variation”,“eco_code”:“E16”,“moves”:}, {“name”:“Queen's Indian, Yates variation”,“eco_code”:“E16”,“moves”:}, {“name”:“Queen's Indian, Riumin variation”,“eco_code”:“E16”,“moves”:}, {“name”:“Queen's Indian, 5.Bg2 Be7”,“eco_code”:“E17”,“moves”:}, {“name”:“Queen's Indian, anti-Queen's Indian system”,“eco_code”:“E17”,“moves”:}, {“name”:“Queen's Indian, Opovcensky variation”,“eco_code”:“E17”,“moves”:}, {“name”:“Queen's Indian, old main line, 6.O-O”,“eco_code”:“E17”,“moves”:}, {“name”:“Queen's Indian, Euwe variation”,“eco_code”:“E17”,“moves”:}, {“name”:“Queen's Indian, old main line, 7.Nc3”,“eco_code”:“E18”,“moves”:}, {“name”:“Queen's Indian, old main line, 9.Qxc3”,“eco_code”:“E19”,“moves”:}, {“name”:“Nimzo-Indian defence”,“eco_code”:“E20”,“moves”:}, {“name”:“Nimzo-Indian, Kmoch variation”,“eco_code”:“E20”,“moves”:}, {“name”:“Nimzo-Indian, Mikenas attack”,“eco_code”:“E20”,“moves”:}, {“name”:“Nimzo-Indian, Romanishin-Kasparov (Steiner) system”,“eco_code”:“E20”,“moves”:}, {“name”:“Nimzo-Indian, three knights variation”,“eco_code”:“E21”,“moves”:}, {“name”:“Nimzo-Indian, three knights, Korchnoi variation”,“eco_code”:“E21”,“moves”:}, {“name”:“Nimzo-Indian, three knights, Euwe variation”,“eco_code”:“E21”,“moves”:}, {“name”:“Nimzo-Indian, 4.e3”,“eco_code”:“E40”,“moves”:}, {“name”:“Nimzo-Indian, 4.e3, Taimanov variation”,“eco_code”:“E40”,“moves”:}, {“name”:“Nimzo-Indian, 4.e3, Bronstein (Byrne) variation”,“eco_code”:“E45”,“moves”:}, {“name”:“Nimzo-Indian, 4.e3, Botvinnik system”,“eco_code”:“E49”,“moves”:}, {“name”:“King's Indian defence”,“eco_code”:“E60”,“moves”:}, {“name”:“King's Indian, 3.Nf3”,“eco_code”:“E60”,“moves”:}, {“name”:“Queen's pawn, Mengarini attack”,“eco_code”:“E60”,“moves”:}, {“name”:“King's Indian, Anti-Gruenfeld”,“eco_code”:“E60”,“moves”:}, {“name”:“King's Indian, Danube gambit”,“eco_code”:“E60”,“moves”:}, {“name”:“King's Indian, 3.g3”,“eco_code”:“E60”,“moves”:}, {“name”:“King's Indian, 3.g3, counterthrust variation”,“eco_code”:“E60”,“moves”:}, {“name”:“King's Indian defence, 3.Nc3”,“eco_code”:“E61”,“moves”:}, {“name”:“King's Indian, Smyslov system”,“eco_code”:“E61”,“moves”:}, {“name”:“King's Indian, 4.e4”,“eco_code”:“E70”,“moves”:}, {“name”:“King's Indian, Kramer system”,“eco_code”:“E70”,“moves”:}, {“name”:“King's Indian, accelerated Averbakh system”,“eco_code”:“E70”,“moves”:}, {“name”:“King's Indian, Makagonov system (5.h3)”,“eco_code”:“E71”,“moves”:}, {“name”:“King's Indian with e4 & g3”,“eco_code”:“E72”,“moves”:}, {“name”:“King's Indian, Pomar system”,“eco_code”:“E72”,“moves”:}, {“name”:“King's Indian, 5.Be2”,“eco_code”:“E73”,“moves”:}, {“name”:“King's Indian, Semi-Averbakh system”,“eco_code”:“E73”,“moves”:}, {“name”:“King's Indian, Averbakh system”,“eco_code”:“E73”,“moves”:}, {“name”:“King's Indian, 5.Nf3”,“eco_code”:“E90”,“moves”:}, {“name”:“King's Indian, Larsen variation”,“eco_code”:“E90”,“moves”:}, {“name”:“King's Indian, Zinnowitz variation”,“eco_code”:“E90”,“moves”:}, {“name”:“King's Indian, 6.Be2”,“eco_code”:“E91”,“moves”:}, {“name”:“King's Indian, Kazakh variation”,“eco_code”:“E91”,“moves”:}, {“name”:“King's Indian, classical variation”,“eco_code”:“E92”,“moves”:}, {“name”:“King's Indian, Andersson variation”,“eco_code”:“E92”,“moves”:}, {“name”:“King's Indian, Gligoric-Taimanov system”,“eco_code”:“E92”,“moves”:}, {“name”:“King's Indian, Petrosian system”,“eco_code”:“E92”,“moves”:}, {“name”:“King's Indian, Petrosian system, Stein variation”,“eco_code”:“E92”,“moves”:}, {“name”:“King's Indian, Petrosian system, main line”,“eco_code”:“E93”,“moves”:}, {“name”:“King's Indian, Petrosian system, Keres variation”,“eco_code”:“E93”,“moves”:}, {“name”:“English, Caro-Kann defensive system”,“eco_code”:“A11”,“moves”:}, {“name”:“English, Caro-Kann defensive system”,“eco_code”:“A12”,“moves”:}, {“name”:“English, Torre defensive system”,“eco_code”:“A12”,“moves”:}, {“name”:“English, London defensive system”,“eco_code”:“A12”,“moves”:}, {“name”:“English, Caro-Kann defensive system”,“eco_code”:“A12”,“moves”:}, {“name”:“English, Bled variation”,“eco_code”:“A12”,“moves”:}, {“name”:“English, New York (London) defensive system”,“eco_code”:“A12”,“moves”:}, {“name”:“English, Capablanca's variation”,“eco_code”:“A12”,“moves”:}, {“name”:“English, Caro-Kann defensive system, Bogolyubov variation”,“eco_code”:“A12”,“moves”:}, {“name”:“English, Mikenas-Carls variation”,“eco_code”:“A18”,“moves”:}, {“name”:“English, Mikenas-Carls, Flohr variation”,“eco_code”:“A18”,“moves”:}, {“name”:“English, Mikenas-Carls, Kevitz variation”,“eco_code”:“A18”,“moves”:}, {“name”:“English, Mikenas-Carls, Sicilian variation”,“eco_code”:“A19”,“moves”:}, {“name”:“English, Bremen system, Keres variation”,“eco_code”:“A23”,“moves”:}, {“name”:“English, Bremen system with …g6”,“eco_code”:“A24”,“moves”:}, {“name”:“English, four knights system”,“eco_code”:“A28”,“moves”:}, {“name”:“English, Nenarokov variation”,“eco_code”:“A28”,“moves”:}, {“name”:“English, Bradley Beach variation”,“eco_code”:“A28”,“moves”:}, {“name”:“English, four knights, Nimzovich variation”,“eco_code”:“A28”,“moves”:}, {“name”:“English, four knights, Marini variation”,“eco_code”:“A28”,“moves”:}, {“name”:“English, four knights, Capablanca variation”,“eco_code”:“A28”,“moves”:}, {“name”:“English, four knights, 4.e3”,“eco_code”:“A28”,“moves”:}, {“name”:“English, four knights, Stean variation”,“eco_code”:“A28”,“moves”:}, {“name”:“English, four knights, Romanishin variation”,“eco_code”:“A28”,“moves”:}, {“name”:“English, four knights, kingside fianchetto”,“eco_code”:“A29”,“moves”:}, {“name”:“English, symmetrical variation”,“eco_code”:“A30”,“moves”:}, {“name”:“English, symmetrical, hedgehog system”,“eco_code”:“A30”,“moves”:}, {“name”:“English, symmetrical, hedgehog, flexible formation”,“eco_code”:“A30”,“moves”:}, {“name”:“English, symmetrical, Benoni formation”,“eco_code”:“A31”,“moves”:}, {“name”:“English, symmetrical variation”,“eco_code”:“A32”,“moves”:}, {“name”:“English, symmetrical variation”,“eco_code”:“A33”,“moves”:}, {“name”:“English, symmetrical, Geller variation”,“eco_code”:“A33”,“moves”:}, {“name”:“English, symmetrical variation”,“eco_code”:“A34”,“moves”:}, {“name”:“English, symmetrical, three knights system”,“eco_code”:“A34”,“moves”:}, {“name”:“English, symmetrical variation”,“eco_code”:“A34”,“moves”:}, {“name”:“English, symmetrical, Rubinstein system”,“eco_code”:“A34”,“moves”:}, {“name”:“English, symmetrical variation”,“eco_code”:“A35”,“moves”:}, {“name”:“English, symmetrical, four knights system”,“eco_code”:“A35”,“moves”:}, {“name”:“English, symmetrical variation”,“eco_code”:“A36”,“moves”:}, {“name”:“English, ultra-symmetrical variation”,“eco_code”:“A36”,“moves”:}, {“name”:“English, symmetrical, Botvinnik system reversed”,“eco_code”:“A36”,“moves”:}, {“name”:“English, symmetrical, Botvinnik system”,“eco_code”:“A36”,“moves”:}, {“name”:“English, symmetrical variation”,“eco_code”:“A37”,“moves”:}, {“name”:“English, symmetrical, Botvinnik system reversed”,“eco_code”:“A37”,“moves”:}, {“name”:“English, symmetrical variation”,“eco_code”:“A38”,“moves”:}, {“name”:“English, symmetrical, main line with d3”,“eco_code”:“A38”,“moves”:}, {“name”:“English, symmetrical, main line with b3”,“eco_code”:“A38”,“moves”:}, {“name”:“English, symmetrical, main line with d4”,“eco_code”:“A39”,“moves”:}, {“name”:“Benoni, fianchetto variation”,“eco_code”:“A62”,“moves”:}, {“name”:“Benoni, fianchetto, 9…Nbd7”,“eco_code”:“A63”,“moves”:}, {“name”:“Benoni, fianchetto, 11…Re8”,“eco_code”:“A64”,“moves”:}, {“name”:“Benoni, four pawns attack”,“eco_code”:“A68”,“moves”:}, {“name”:“Benoni, four pawns attack, main line”,“eco_code”:“A69”,“moves”:}, {“name”:“Benoni, classical with e4 and Nf3”,“eco_code”:“A70”,“moves”:}, {“name”:“Benoni, classical without 9.O-O”,“eco_code”:“A70”,“moves”:}, {“name”:“Benoni, classical, 8.Bg5”,“eco_code”:“A71”,“moves”:}, {“name”:“Benoni, classical without 9.O-O”,“eco_code”:“A72”,“moves”:}, {“name”:“Benoni, classical, 9.O-O”,“eco_code”:“A73”,“moves”:}, {“name”:“Benoni, classical, 9…a6, 10.a4”,“eco_code”:“A74”,“moves”:}, {“name”:“Benoni, classical with …a6 and 10…Bg4”,“eco_code”:“A75”,“moves”:}, {“name”:“Benoni, classical, 9…Re8”,“eco_code”:“A76”,“moves”:}, {“name”:“Benoni, classical, 9…Re8, 10.Nd2”,“eco_code”:“A77”,“moves”:}, {“name”:“Benoni, classical with …Re8 and …Na6”,“eco_code”:“A78”,“moves”:}, {“name”:“Benoni, classical, 11.f3”,“eco_code”:“A79”,“moves”:}, {“name”:“Dutch, Staunton gambit”,“eco_code”:“A82”,“moves”:}, {“name”:“Dutch, Balogh defence”,“eco_code”:“A82”,“moves”:}, {“name”:“Dutch, Staunton gambit”,“eco_code”:“A82”,“moves”:}, {“name”:“Dutch, Staunton gambit, Tartakower variation”,“eco_code”:“A82”,“moves”:}, {“name”:“Dutch, Staunton gambit, Staunton's line”,“eco_code”:“A83”,“moves”:}, {“name”:“Dutch, Staunton gambit, Alekhine variation”,“eco_code”:“A83”,“moves”:}, {“name”:“Dutch, Staunton gambit, Lasker variation”,“eco_code”:“A83”,“moves”:}, {“name”:“Dutch, Staunton gambit, Chigorin variation”,“eco_code”:“A83”,“moves”:}, {“name”:“Dutch, Staunton gambit, Nimzovich variation”,“eco_code”:“A83”,“moves”:}, {“name”:“Dutch, Leningrad, main variation”,“eco_code”:“A87”,“moves”:}, {“name”:“Dutch, Leningrad, main variation with c6”,“eco_code”:“A88”,“moves”:}, {“name”:“Dutch, Leningrad, main variation with Nc6”,“eco_code”:“A89”,“moves”:}, {“name”:“Dutch, Ilyin-Genevsky variation”,“eco_code”:“A97”,“moves”:}, {“name”:“Dutch, Ilyin-Genevsky, Winter variation”,“eco_code”:“A97”,“moves”:}, {“name”:“Dutch, Ilyin-Genevsky variation with Qc2”,“eco_code”:“A98”,“moves”:}, {“name”:“Dutch, Ilyin-Genevsky variation with b3”,“eco_code”:“A99”,“moves”:}, {“name”:“Sicilian, closed”,“eco_code”:“B23”,“moves”:}, {“name”:“Sicilian, closed, Korchnoi variation”,“eco_code”:“B23”,“moves”:}, {“name”:“Sicilian, closed, 2…Nc6”,“eco_code”:“B23”,“moves”:}, {“name”:“Sicilian, chameleon variation”,“eco_code”:“B23”,“moves”:}, {“name”:“Sicilian, Grand Prix attack”,“eco_code”:“B23”,“moves”:}, {“name”:“Sicilian, Grand Prix attack, Schofman variation”,“eco_code”:“B23”,“moves”:}, {“name”:“Sicilian, closed”,“eco_code”:“B24”,“moves”:}, {“name”:“Sicilian, closed, Smyslov variation”,“eco_code”:“B24”,“moves”:}, {“name”:“Sicilian, closed”,“eco_code”:“B25”,“moves”:}, {“name”:“Sicilian, closed, 6.Ne2 e5 (Botvinnik)”,“eco_code”:“B25”,“moves”:}, {“name”:“Sicilian, closed, 6.f4”,“eco_code”:“B25”,“moves”:}, {“name”:“Sicilian, closed, 6.f4 e5 (Botvinnik)”,“eco_code”:“B25”,“moves”:}, {“name”:“Sicilian, closed, 6.Be3”,“eco_code”:“B26”,“moves”:}, {“name”:“Sicilian, accelerated fianchetto, exchange variation”,“eco_code”:“B34”,“moves”:}, {“name”:“Sicilian, accelerated fianchetto, modern variation”,“eco_code”:“B34”,“moves”:}, {“name”:“Sicilian, accelerated fianchetto, modern variation with Bc4”,“eco_code”:“B35”,“moves”:}, {“name”:“Sicilian, accelerated fianchetto, Maroczy bind”,“eco_code”:“B36”,“moves”:}, {“name”:“Sicilian, accelerated fianchetto, Gurgenidze variation”,“eco_code”:“B36”,“moves”:}, {“name”:“Sicilian, accelerated fianchetto, Maroczy bind, 5…Bg7”,“eco_code”:“B37”,“moves”:}, {“name”:“Sicilian, accelerated fianchetto, Simagin variation”,“eco_code”:“B37”,“moves”:}, {“name”:“Sicilian, accelerated fianchetto, Maroczy bind, 6.Be3”,“eco_code”:“B38”,“moves”:}, {“name”:“Sicilian, accelerated fianchetto, Breyer variation”,“eco_code”:“B39”,“moves”:}, {“name”:“Sicilian, Kan variation”,“eco_code”:“B41”,“moves”:}, {“name”:“Sicilian, Kan, Maroczy bind (Reti variation)”,“eco_code”:“B41”,“moves”:}, {“name”:“Sicilian, Kan, Maroczy bind - Bronstein variation”,“eco_code”:“B41”,“moves”:}, {“name”:“Sicilian, Kan, 5.Bd3”,“eco_code”:“B42”,“moves”:}, {“name”:“Sicilian, Kan, Gipslis variation”,“eco_code”:“B42”,“moves”:}, {“name”:“Sicilian, Kan, Polugaievsky variation”,“eco_code”:“B42”,“moves”:}, {“name”:“Sicilian, Kan, Swiss cheese variation”,“eco_code”:“B42”,“moves”:}, {“name”:“Sicilian, Kan, 5.Nc3”,“eco_code”:“B43”,“moves”:}, {“name”:“Sicilian, Taimanov variation”,“eco_code”:“B45”,“moves”:}, {“name”:“Sicilian, Taimanov, American attack”,“eco_code”:“B45”,“moves”:}, {“name”:“Sicilian, Taimanov variation”,“eco_code”:“B46”,“moves”:}, {“name”:“Sicilian, Taimanov (Bastrikov) variation”,“eco_code”:“B47”,“moves”:}, {“name”:“Sicilian, Taimanov variation”,“eco_code”:“B48”,“moves”:}, {“name”:“Sicilian, Taimanov variation”,“eco_code”:“B49”,“moves”:}, {“name”:“Sicilian, Canal-Sokolsky (Nimzovich-Rossolimo, Moscow) attack”,“eco_code”:“B51”,“moves”:}, {“name”:“Sicilian, Canal-Sokolsky attack, 3…Bd7”,“eco_code”:“B52”,“moves”:}, {“name”:“Sicilian, Canal-Sokolsky attack, Bronstein gambit”,“eco_code”:“B52”,“moves”:}, {“name”:“Sicilian, Canal-Sokolsky attack, Sokolsky variation”,“eco_code”:“B52”,“moves”:}, {“name”:“Sicilian, Richter-Rauzer”,“eco_code”:“B60”,“moves”:}, {“name”:“Sicilian, Richter-Rauzer, Bondarevsky variation”,“eco_code”:“B60”,“moves”:}, {“name”:“Sicilian, Richter-Rauzer, Larsen variation”,“eco_code”:“B60”,“moves”:}, {“name”:“Sicilian, Richter-Rauzer, Larsen variation, 7.Qd2”,“eco_code”:“B61”,“moves”:}, {“name”:“Sicilian, Richter-Rauzer, 6…e6”,“eco_code”:“B62”,“moves”:}, {“name”:“Sicilian, Richter-Rauzer, Podvebrady variation”,“eco_code”:“B62”,“moves”:}, {“name”:“Sicilian, Richter-Rauzer, Margate (Alekhine) variation”,“eco_code”:“B62”,“moves”:}, {“name”:“Sicilian, Richter-Rauzer, Richter attack”,“eco_code”:“B62”,“moves”:}, {“name”:“Sicilian, Richter-Rauzer, Keres variation”,“eco_code”:“B62”,“moves”:}, {“name”:“Sicilian, Richter-Rauzer, Rauzer attack”,“eco_code”:“B63”,“moves”:}, {“name”:“Sicilian, Richter-Rauzer, Rauzer attack, 7…Be7”,“eco_code”:“B63”,“moves”:}, {“name”:“Sicilian, Richter-Rauzer, Rauzer attack, 7…Be7 defence, 9.f4”,“eco_code”:“B64”,“moves”:}, {“name”:“Sicilian, Richter-Rauzer, Rauzer attack, Geller variation”,“eco_code”:“B64”,“moves”:}, {“name”:“Sicilian, Richter-Rauzer, Rauzer attack, 7…Be7 defence, 9…Nxd4”,“eco_code”:“B65”,“moves”:}, {“name”:“Sicilian, Richter-Rauzer, Rauzer attack, 7…Be7 defence, 9…Nxd4”,“eco_code”:“B65”,“moves”:}, {“name”:“Sicilian, Richter-Rauzer, Rauzer attack, 7…a6”,“eco_code”:“B66”,“moves”:}, {“name”:“Sicilian, Richter-Rauzer, Rauzer attack, 7…a6 defence, 8…Bd7”,“eco_code”:“B67”,“moves”:}, {“name”:“Sicilian, Richter-Rauzer, Rauzer attack, 7…a6 defence, 9…Be7”,“eco_code”:“B68”,“moves”:}, {“name”:“Sicilian, Richter-Rauzer, Rauzer attack, 7…a6 defence, 11.Bxf6”,“eco_code”:“B69”,“moves”:}, {“name”:“Sicilian, dragon variation”,“eco_code”:“B70”,“moves”:}, {“name”:“Sicilian, dragon, Levenfish variation”,“eco_code”:“B71”,“moves”:}, {“name”:“Sicilian, dragon, Levenfish; Flohr variation”,“eco_code”:“B71”,“moves”:}, {“name”:“Sicilian, dragon, 6.Be3”,“eco_code”:“B72”,“moves”:}, {“name”:“Sicilian, dragon, classical attack”,“eco_code”:“B72”,“moves”:}, {“name”:“Sicilian, dragon, classical, Amsterdam variation”,“eco_code”:“B72”,“moves”:}, {“name”:“Sicilian, dragon, classical, Grigoriev variation”,“eco_code”:“B72”,“moves”:}, {“name”:“Sicilian, dragon, classical, Nottingham variation”,“eco_code”:“B72”,“moves”:}, {“name”:“Sicilian, dragon, classical, 8.O-O”,“eco_code”:“B73”,“moves”:}, {“name”:“Sicilian, dragon, classical, Zollner gambit”,“eco_code”:“B73”,“moves”:}, {“name”:“Sicilian, dragon, classical, Richter variation”,“eco_code”:“B73”,“moves”:}, {“name”:“Sicilian, dragon, classical, 9.Nb3”,“eco_code”:“B74”,“moves”:}, {“name”:“Sicilian, dragon, classical, Stockholm attack”,“eco_code”:“B74”,“moves”:}, {“name”:“Sicilian, dragon, classical, Spielmann variation”,“eco_code”:“B74”,“moves”:}, {“name”:“Sicilian, dragon, classical, Bernard defence”,“eco_code”:“B74”,“moves”:}, {“name”:“Sicilian, dragon, classical, Reti-Tartakower variation”,“eco_code”:“B74”,“moves”:}, {“name”:“Sicilian, dragon, classical, Alekhine variation”,“eco_code”:“B74”,“moves”:}, {“name”:“Sicilian, dragon, Yugoslav attack”,“eco_code”:“B75”,“moves”:}, {“name”:“Sicilian, dragon, Yugoslav attack, 7…O-O”,“eco_code”:“B76”,“moves”:}, {“name”:“Sicilian, dragon, Yugoslav attack, Rauser variation”,“eco_code”:“B76”,“moves”:}, {“name”:“Sicilian, dragon, Yugoslav attack, 9.Bc4”,“eco_code”:“B77”,“moves”:}, {“name”:“Sicilian, dragon, Yugoslav attack, Byrne variation”,“eco_code”:“B77”,“moves”:}, {“name”:“Sicilian, dragon, Yugoslav attack, 9…Bd7”,“eco_code”:“B77”,“moves”:}, {“name”:“Sicilian, dragon, Yugoslav attack, 10.O-O-O”,“eco_code”:“B78”,“moves”:}, {“name”:“Sicilian, dragon, Yugoslav attack, 12.h4”,“eco_code”:“B79”,“moves”:}, {“name”:“Sicilian, Scheveningen variation”,“eco_code”:“B80”,“moves”:}, {“name”:“Sicilian, Scheveningen, English variation”,“eco_code”:“B80”,“moves”:}, {“name”:“Sicilian, Scheveningen, Vitolins variation”,“eco_code”:“B80”,“moves”:}, {“name”:“Sicilian, Scheveningen, fianchetto variation”,“eco_code”:“B80”,“moves”:}, {“name”:“Sicilian, Scheveningen, Keres attack”,“eco_code”:“B81”,“moves”:}, {“name”:“Sicilian, Scheveningen, 6.f4”,“eco_code”:“B82”,“moves”:}, {“name”:“Sicilian, Scheveningen, Tal variation”,“eco_code”:“B82”,“moves”:}, {“name”:“Sicilian, Scheveningen, 6.Be2”,“eco_code”:“B83”,“moves”:}, {“name”:“Sicilian, modern Scheveningen”,“eco_code”:“B83”,“moves”:}, {“name”:“Sicilian, modern Scheveningen, main line”,“eco_code”:“B83”,“moves”:}, {“name”:“Sicilian, modern Scheveningen, main line with Nb3”,“eco_code”:“B83”,“moves”:}, {“name”:“Sicilian, Scheveningen (Paulsen), classical variation”,“eco_code”:“B84”,“moves”:}, {“name”:“Sicilian, Scheveningen, classical, Nd7 system”,“eco_code”:“B84”,“moves”:}, {“name”:“Sicilian, Scheveningen (Paulsen), classical variation”,“eco_code”:“B84”,“moves”:}, {“name”:“Sicilian, Scheveningen, classical variation with …Qc7 and …Nc6”,“eco_code”:“B85”,“moves”:}, {“name”:“Sicilian, Scheveningen, classical, Maroczy system”,“eco_code”:“B85”,“moves”:}, {“name”:“Sicilian, Scheveningen, classical”,“eco_code”:“B85”,“moves”:}, {“name”:“Sicilian, Scheveningen, classical main line”,“eco_code”:“B85”,“moves”:}, {“name”:“Sicilian, Sozin attack”,“eco_code”:“B86”,“moves”:}, {“name”:“Sicilian, Sozin with …a6 and …b5”,“eco_code”:“B87”,“moves”:}, {“name”:“Sicilian, Sozin, Leonhardt variation”,“eco_code”:“B88”,“moves”:}, {“name”:“Sicilian, Sozin, Fischer variation”,“eco_code”:“B88”,“moves”:}, {“name”:“Sicilian, Sozin, 7.Be3”,“eco_code”:“B89”,“moves”:}, {“name”:“Sicilian, Velimirovic attack”,“eco_code”:“B89”,“moves”:}, {“name”:“Sicilian, Najdorf”,“eco_code”:“B90”,“moves”:}, {“name”:“Sicilian, Najdorf, Adams attack”,“eco_code”:“B90”,“moves”:}, {“name”:“Sicilian, Najdorf, Lipnitzky attack”,“eco_code”:“B90”,“moves”:}, {“name”:“Sicilian, Najdorf, Byrne (English) attack”,“eco_code”:“B90”,“moves”:}, {“name”:“Sicilian, Najdorf, Zagreb (fianchetto) variation”,“eco_code”:“B91”,“moves”:}, {“name”:“Sicilian, Najdorf, Opovcensky variation”,“eco_code”:“B92”,“moves”:}, {“name”:“Sicilian, Najdorf, 6.f4”,“eco_code”:“B93”,“moves”:}, {“name”:“Sicilian, Najdorf, 6.Bg5”,“eco_code”:“B94”,“moves”:}, {“name”:“Sicilian, Najdorf, Ivkov variation”,“eco_code”:“B94”,“moves”:}, {“name”:“Sicilian, Najdorf, 6…e6”,“eco_code”:“B95”,“moves”:}, {“name”:“Sicilian, Najdorf, 7.f4”,“eco_code”:“B96”,“moves”:}, {“name”:“Sicilian, Najdorf, Polugayevsky variation”,“eco_code”:“B96”,“moves”:}, {“name”:“Sicilian, Najdorf, Polugayevsky, Simagin variation”,“eco_code”:“B96”,“moves”:}, {“name”:“Sicilian, Najdorf, 7…Qb6”,“eco_code”:“B97”,“moves”:}, {“name”:“Sicilian, Najdorf, Poisoned pawn variation”,“eco_code”:“B97”,“moves”:}, {“name”:“Sicilian, Najdorf, 7…Be7”,“eco_code”:“B98”,“moves”:}, {“name”:“Sicilian, Najdorf, Browne variation”,“eco_code”:“B98”,“moves”:}, {“name”:“Sicilian, Najdorf, Goteborg (Argentine) variation”,“eco_code”:“B98”,“moves”:}, {“name”:“Sicilian, Najdorf variation”,“eco_code”:“B98”,“moves”:}, {“name”:“Sicilian, Najdorf, 7…Be7 main line”,“eco_code”:“B99”,“moves”:}, {“name”:“French, Tarrasch”,“eco_code”:“C03”,“moves”:}, {“name”:“French, Tarrasch, Haberditz variation”,“eco_code”:“C03”,“moves”:}, {“name”:“French, Tarrasch, Guimard variation”,“eco_code”:“C03”,“moves”:}, {“name”:“French, Tarrasch, Guimard main line”,“eco_code”:“C04”,“moves”:}, {“name”:“French, Tarrasch, closed variation”,“eco_code”:“C05”,“moves”:}, {“name”:“French, Tarrasch, Botvinnik variation”,“eco_code”:“C05”,“moves”:}, {“name”:“French, Tarrasch, closed variation”,“eco_code”:“C05”,“moves”:}, {“name”:“French, Tarrasch, closed variation, main line”,“eco_code”:“C06”,“moves”:}, {“name”:“French, Tarrasch, Leningrad variation”,“eco_code”:“C06”,“moves”:}, {“name”:“French, Tarrasch, open variation”,“eco_code”:“C07”,“moves”:}, {“name”:“French, Tarrasch, Eliskases variation”,“eco_code”:“C07”,“moves”:}, {“name”:“French, Tarrasch, open, 4.ed ed”,“eco_code”:“C08”,“moves”:}, {“name”:“French, Tarrasch, open variation, main line”,“eco_code”:“C09”,“moves”:}, {“name”:“French, classical”,“eco_code”:“C13”,“moves”:}, {“name”:“French, classical, Anderssen variation”,“eco_code”:“C13”,“moves”:}, {“name”:“French, classical, Anderssen-Richter variation”,“eco_code”:“C13”,“moves”:}, {“name”:“French, classical, Vistaneckis (Nimzovich) variation”,“eco_code”:“C13”,“moves”:}, {“name”:“French, classical, Frankfurt variation”,“eco_code”:“C13”,“moves”:}, {“name”:“French, classical, Tartakower variation”,“eco_code”:“C13”,“moves”:}, {“name”:“French, Albin-Alekhine-Chatard attack”,“eco_code”:“C13”,“moves”:}, {“name”:“French, Albin-Alekhine-Chatard attack, Maroczy variation”,“eco_code”:“C13”,“moves”:}, {“name”:“French, Albin-Alekhine-Chatard attack, Breyer variation”,“eco_code”:“C13”,“moves”:}, {“name”:“French, Albin-Alekhine-Chatard attack, Teichmann variation”,“eco_code”:“C13”,“moves”:}, {“name”:“French, Albin-Alekhine-Chatard attack, Spielmann variation”,“eco_code”:“C13”,“moves”:}, {“name”:“French, classical variation”,“eco_code”:“C14”,“moves”:}, {“name”:“French, classical, Tarrasch variation”,“eco_code”:“C14”,“moves”:}, {“name”:“French, classical, Rubinstein variation”,“eco_code”:“C14”,“moves”:}, {“name”:“French, classical, Alapin variation”,“eco_code”:“C14”,“moves”:}, {“name”:“French, classical, Pollock variation”,“eco_code”:“C14”,“moves”:}, {“name”:“French, classical, Steinitz variation”,“eco_code”:“C14”,“moves”:}, {“name”:“French, classical, Stahlberg variation”,“eco_code”:“C14”,“moves”:}, {“name”:“French, Winawer (Nimzovich) variation”,“eco_code”:“C15”,“moves”:}, {“name”:“French, Winawer, Kondratiyev variation”,“eco_code”:“C15”,“moves”:}, {“name”:“French, Winawer, fingerslip variation”,“eco_code”:“C15”,“moves”:}, {“name”:“French, Winawer, Alekhine (Maroczy) gambit”,“eco_code”:“C15”,“moves”:}, {“name”:“French, Winawer, Alekhine gambit, Alatortsev variation”,“eco_code”:“C15”,“moves”:}, {“name”:“French, Winawer, Alekhine gambit”,“eco_code”:“C15”,“moves”:}, {“name”:“French, Winawer, Alekhine gambit, Kan variation”,“eco_code”:“C15”,“moves”:}, {“name”:“French, Winawer, advance variation”,“eco_code”:“C16”,“moves”:}, {“name”:“French, Winawer, Petrosian variation”,“eco_code”:“C16”,“moves”:}, {“name”:“French, Winawer, advance variation”,“eco_code”:“C17”,“moves”:}, {“name”:“French, Winawer, advance, Bogolyubov variation”,“eco_code”:“C17”,“moves”:}, {“name”:“French, Winawer, advance, Russian variation”,“eco_code”:“C17”,“moves”:}, {“name”:“French, Winawer, advance, 5.a3”,“eco_code”:“C17”,“moves”:}, {“name”:“French, Winawer, advance, Rauzer variation”,“eco_code”:“C17”,“moves”:}, {“name”:“French, Winawer, advance variation”,“eco_code”:“C18”,“moves”:}, {“name”:“French, Winawer, classical variation”,“eco_code”:“C18”,“moves”:}, {“name”:“French, Winawer, advance, 6…Ne7”,“eco_code”:“C19”,“moves”:}, {“name”:“French, Winawer, advance, Smyslov variation”,“eco_code”:“C19”,“moves”:}, {“name”:“French, Winawer, advance, positional main line”,“eco_code”:“C19”,“moves”:}, {“name”:“French, Winawer, advance, poisoned pawn variation”,“eco_code”:“C19”,“moves”:}, {“name”:“French, Winawer, advance, poisoned pawn, Euwe-Gligoric variation”,“eco_code”:“C19”,“moves”:}, {“name”:“French, Winawer, advance, poisoned pawn, Konstantinopolsky variation”,“eco_code”:“C19”,“moves”:}, {“name”:“Ruy Lopez, Berlin defence”,“eco_code”:“C65”,“moves”:}, {“name”:“Ruy Lopez, Berlin defence, Nyholm attack”,“eco_code”:“C65”,“moves”:}, {“name”:“Ruy Lopez, Berlin defence, Mortimer variation”,“eco_code”:“C65”,“moves”:}, {“name”:“Ruy Lopez, Berlin defence, Mortimer trap”,“eco_code”:“C65”,“moves”:}, {“name”:“Ruy Lopez, Berlin defence, Anderssen variation”,“eco_code”:“C65”,“moves”:}, {“name”:“Ruy Lopez, Berlin defence, Duras variation”,“eco_code”:“C65”,“moves”:}, {“name”:“Ruy Lopez, Berlin defence, Kaufmann variation”,“eco_code”:“C65”,“moves”:}, {“name”:“Ruy Lopez, Berlin defence, 4.O-O”,“eco_code”:“C65”,“moves”:}, {“name”:“Ruy Lopez, Berlin defence, Beverwijk variation”,“eco_code”:“C65”,“moves”:}, {“name”:“Ruy Lopez, Berlin defence, 4.O-O, d6”,“eco_code”:“C66”,“moves”:}, {“name”:“Ruy Lopez, Berlin defence, hedgehog variation”,“eco_code”:“C66”,“moves”:}, {“name”:“Ruy Lopez, Berlin defence, Tarrasch trap”,“eco_code”:“C66”,“moves”:}, {“name”:“Ruy Lopez, closed Berlin defence, Bernstein variation”,“eco_code”:“C66”,“moves”:}, {“name”:“Ruy Lopez, closed Berlin defence, Showalter variation”,“eco_code”:“C66”,“moves”:}, {“name”:“Ruy Lopez, closed Berlin defence, Wolf variation”,“eco_code”:“C66”,“moves”:}, {“name”:“Ruy Lopez, closed Berlin defence, Chigorin variation”,“eco_code”:“C66”,“moves”:}, {“name”:“Ruy Lopez, Berlin defence, open variation”,“eco_code”:“C67”,“moves”:}, {“name”:“Ruy Lopez, open Berlin defence, l'Hermet variation”,“eco_code”:“C67”,“moves”:}, {“name”:“Ruy Lopez, open Berlin defence, Showalter variation”,“eco_code”:“C67”,“moves”:}, {“name”:“Ruy Lopez, open Berlin defence, 5…Be7”,“eco_code”:“C67”,“moves”:}, {“name”:“Ruy Lopez, Berlin defence, Rio de Janeiro variation”,“eco_code”:“C67”,“moves”:}, {“name”:“Ruy Lopez, Berlin defence, Zukertort variation”,“eco_code”:“C67”,“moves”:}, {“name”:“Ruy Lopez, Berlin defence, Pillsbury variation”,“eco_code”:“C67”,“moves”:}, {“name”:“Ruy Lopez, Berlin defence, Winawer attack”,“eco_code”:“C67”,“moves”:}, {“name”:“Ruy Lopez, Berlin defence, Cordel variation”,“eco_code”:“C67”,“moves”:}, {“name”:“Ruy Lopez, Berlin defence, Trifunovic variation”,“eco_code”:“C67”,“moves”:}, {“name”:“Ruy Lopez, Berlin defence, Minckwitz variation”,“eco_code”:“C67”,“moves”:}, {“name”:“Ruy Lopez, Berlin defence, Rosenthal variation”,“eco_code”:“C67”,“moves”:}, {“name”:“Ruy Lopez, exchange variation”,“eco_code”:“C68”,“moves”:}, {“name”:“Ruy Lopez, exchange, Alekhine variation”,“eco_code”:“C68”,“moves”:}, {“name”:“Ruy Lopez, exchange, Keres variation”,“eco_code”:“C68”,“moves”:}, {“name”:“Ruy Lopez, exchange, Romanovsky variation”,“eco_code”:“C68”,“moves”:}, {“name”:“Ruy Lopez, exchange variation, 5.O-O”,“eco_code”:“C69”,“moves”:}, {“name”:“Ruy Lopez, exchange variation, Alapin gambit”,“eco_code”:“C69”,“moves”:}, {“name”:“Ruy Lopez, exchange, Gligoric variation”,“eco_code”:“C69”,“moves”:}, {“name”:“Ruy Lopez, exchange, Bronstein variation”,“eco_code”:“C69”,“moves”:}, {“name”:“Ruy Lopez, modern Steinitz defence”,“eco_code”:“C71”,“moves”:}, {“name”:“Ruy Lopez, Noah's ark trap”,“eco_code”:“C71”,“moves”:}, {“name”:“Ruy Lopez, modern Steinitz defence, Three knights variation”,“eco_code”:“C71”,“moves”:}, {“name”:“Ruy Lopez, modern Steinitz defence, Duras (Keres) variation”,“eco_code”:“C71”,“moves”:}, {“name”:“Ruy Lopez, modern Steinitz defence, 5.O-O”,“eco_code”:“C72”,“moves”:}, {“name”:“Ruy Lopez, modern Steinitz defence, Richter variation”,“eco_code”:“C73”,“moves”:}, {“name”:“Ruy Lopez, modern Steinitz defence, Alapin variation”,“eco_code”:“C73”,“moves”:}, {“name”:“Ruy Lopez, modern Steinitz defence”,“eco_code”:“C74”,“moves”:}, {“name”:“Ruy Lopez, modern Steinitz defence, siesta variation”,“eco_code”:“C74”,“moves”:}, {“name”:“Ruy Lopez, Siesta, Kopayev variation”,“eco_code”:“C74”,“moves”:}, {“name”:“Ruy Lopez, modern Steinitz defence”,“eco_code”:“C75”,“moves”:}, {“name”:“Ruy Lopez, modern Steinitz defence, Rubinstein variation”,“eco_code”:“C75”,“moves”:}, {“name”:“Ruy Lopez, modern Steinitz defence, fianchetto (Bronstein) variation”,“eco_code”:“C76”,“moves”:}, {“name”:“Ruy Lopez, open (Tarrasch) defence”,“eco_code”:“C80”,“moves”:}, {“name”:“Ruy Lopez, open, Tartakower variation”,“eco_code”:“C80”,“moves”:}, {“name”:“Ruy Lopez, open, Knorre variation”,“eco_code”:“C80”,“moves”:}, {“name”:“Ruy Lopez, open, 6.d4”,“eco_code”:“C80”,“moves”:}, {“name”:“Ruy Lopez, open, Riga variation”,“eco_code”:“C80”,“moves”:}, {“name”:“Ruy Lopez, open, 6.d4 b5”,“eco_code”:“C80”,“moves”:}, {“name”:“Ruy Lopez, open, Friess attack”,“eco_code”:“C80”,“moves”:}, {“name”:“Ruy Lopez, open, Richter variation”,“eco_code”:“C80”,“moves”:}, {“name”:“Ruy Lopez, open, 7.Bb3”,“eco_code”:“C80”,“moves”:}, {“name”:“Ruy Lopez, open, Schlechter defence”,“eco_code”:“C80”,“moves”:}, {“name”:“Ruy Lopez, open, Berger variation”,“eco_code”:“C80”,“moves”:}, {“name”:“Ruy Lopez, open, Harksen gambit”,“eco_code”:“C80”,“moves”:}, {“name”:“Ruy Lopez, open, 8.de”,“eco_code”:“C80”,“moves”:}, {“name”:“Ruy Lopez, open, Zukertort variation”,“eco_code”:“C80”,“moves”:}, {“name”:“Ruy Lopez, open, 8…Be6”,“eco_code”:“C80”,“moves”:}, {“name”:“Ruy Lopez, open, Bernstein variation”,“eco_code”:“C80”,“moves”:}, {“name”:“Ruy Lopez, open, Bernstein variation, Karpov gambit”,“eco_code”:“C80”,“moves”:}, {“name”:“Ruy Lopez, open, Howell attack”,“eco_code”:“C81”,“moves”:}, {“name”:“Ruy Lopez, open, Howell attack, Ekstroem variation”,“eco_code”:“C81”,“moves”:}, {“name”:“Ruy Lopez, open, Howell attack, Adam variation”,“eco_code”:“C81”,“moves”:}, {“name”:“Ruy Lopez, open, 9.c3”,“eco_code”:“C82”,“moves”:}, {“name”:“Ruy Lopez, open, Berlin variation”,“eco_code”:“C82”,“moves”:}, {“name”:“Ruy Lopez, open, Italian variation”,“eco_code”:“C82”,“moves”:}, {“name”:“Ruy Lopez, open, St. Petersburg variation”,“eco_code”:“C82”,“moves”:}, {“name”:“Ruy Lopez, open, Dilworth variation”,“eco_code”:“C82”,“moves”:}, {“name”:“Ruy Lopez, open, Motzko attack”,“eco_code”:“C82”,“moves”:}, {“name”:“Ruy Lopez, open, Motzko attack, Nenarokov variation”,“eco_code”:“C82”,“moves”:}, {“name”:“Ruy Lopez, open, classical defence”,“eco_code”:“C83”,“moves”:}, {“name”:“Ruy Lopez, open, Malkin variation”,“eco_code”:“C83”,“moves”:}, {“name”:“Ruy Lopez, open, 9…Be7, 10.Re1”,“eco_code”:“C83”,“moves”:}, {“name”:“Ruy Lopez, open, Tarrasch trap”,“eco_code”:“C83”,“moves”:}, {“name”:“Ruy Lopez, open, Breslau variation”,“eco_code”:“C83”,“moves”:}, {“name”:“Ruy Lopez, closed (with …d6)”,“eco_code”:“C90”,“moves”:}, {“name”:“Ruy Lopez, closed, Pilnik variation”,“eco_code”:“C90”,“moves”:}, {“name”:“Ruy Lopez, closed, Lutikov variation”,“eco_code”:“C90”,“moves”:}, {“name”:“Ruy Lopez, closed, Suetin variation”,“eco_code”:“C90”,“moves”:}, {“name”:“Ruy Lopez, closed, 9.d4”,“eco_code”:“C91”,“moves”:}, {“name”:“Ruy Lopez, closed, Bogolyubov variation”,“eco_code”:“C91”,“moves”:}, {“name”:“Ruy Lopez, closed, 9.h3”,“eco_code”:“C92”,“moves”:}, {“name”:“Ruy Lopez, closed, Keres (9…a5) variation”,“eco_code”:“C92”,“moves”:}, {“name”:“Ruy Lopez, closed, Kholmov variation”,“eco_code”:“C92”,“moves”:}, {“name”:“Ruy Lopez, closed, Ragozin-Petrosian (`Keres') variation”,“eco_code”:“C92”,“moves”:}, {“name”:“Ruy Lopez, closed, Flohr-Zaitsev system (Lenzerheide variation)”,“eco_code”:“C92”,“moves”:}, {“name”:“Ruy Lopez, closed, Smyslov defence”,“eco_code”:“C93”,“moves”:}, {“name”:“Ruy Lopez, closed, Breyer defence”,“eco_code”:“C94”,“moves”:}, {“name”:“Ruy Lopez, closed, Breyer, 10.d4”,“eco_code”:“C95”,“moves”:}, {“name”:“Ruy Lopez, closed, Breyer, Borisenko variation”,“eco_code”:“C95”,“moves”:}, {“name”:“Ruy Lopez, closed, Breyer, Gligoric variation”,“eco_code”:“C95”,“moves”:}, {“name”:“Ruy Lopez, closed, Breyer, Simagin variation”,“eco_code”:“C95”,“moves”:}, {“name”:“Ruy Lopez, closed (8…Na5)”,“eco_code”:“C96”,“moves”:}, {“name”:“Ruy Lopez, closed, Rossolimo defence”,“eco_code”:“C96”,“moves”:}, {“name”:“Ruy Lopez, closed (10…c5)”,“eco_code”:“C96”,“moves”:}, {“name”:“Ruy Lopez, closed, Borisenko defence”,“eco_code”:“C96”,“moves”:}, {“name”:“Ruy Lopez, closed, Keres (…Nd7) defence”,“eco_code”:“C96”,“moves”:}, {“name”:“Ruy Lopez, closed, Chigorin defence”,“eco_code”:“C97”,“moves”:}, {“name”:“Ruy Lopez, closed, Chigorin, Yugoslav system”,“eco_code”:“C97”,“moves”:}, {“name”:“Ruy Lopez, closed, Chigorin, 12…Nc6”,“eco_code”:“C98”,“moves”:}, {“name”:“Ruy Lopez, closed, Chigorin, Rauzer attack”,“eco_code”:“C98”,“moves”:}, {“name”:“Ruy Lopez, closed, Chigorin, 12…c5d4”,“eco_code”:“C99”,“moves”:}, {“name”:“Queen's Gambit Declined, Tarrasch defence”,“eco_code”:“D32”,“moves”:}, {“name”:“Queen's Gambit Declined, Tarrasch, von Hennig-Schara gambit”,“eco_code”:“D32”,“moves”:}, {“name”:“Queen's Gambit Declined, Tarrasch defence, 4.cd ed”,“eco_code”:“D32”,“moves”:}, {“name”:“Queen's Gambit Declined, Tarrasch defence, Tarrasch gambit”,“eco_code”:“D32”,“moves”:}, {“name”:“Queen's Gambit Declined, Tarrasch defence, Marshall gambit”,“eco_code”:“D32”,“moves”:}, {“name”:“Queen's Gambit Declined, Tarrasch defence”,“eco_code”:“D32”,“moves”:}, {“name”:“Queen's Gambit Declined, Tarrasch, Schlechter-Rubinstein system”,“eco_code”:“D33”,“moves”:}, {“name”:“Queen's Gambit Declined, Tarrasch, Folkestone (Swedish) variation”,“eco_code”:“D33”,“moves”:}, {“name”:“Queen's Gambit Declined, Tarrasch, Schlechter-Rubinstein system, Rey Ardid variation”,“eco_code”:“D33”,“moves”:}, {“name”:“Queen's Gambit Declined, Tarrasch, Prague variation”,“eco_code”:“D33”,“moves”:}, {“name”:“Queen's Gambit Declined, Tarrasch, Wagner variation”,“eco_code”:“D33”,“moves”:}, {“name”:“Queen's Gambit Declined, Tarrasch, Prague variation, 7…Be7”,“eco_code”:“D34”,“moves”:}, {“name”:“Queen's Gambit Declined, Tarrasch, Prague variation, Normal position”,“eco_code”:“D34”,“moves”:}, {“name”:“Queen's Gambit Declined, Tarrasch, Reti variation”,“eco_code”:“D34”,“moves”:}, {“name”:“Queen's Gambit Declined, Tarrasch, Prague variation, 9.Bg5”,“eco_code”:“D34”,“moves”:}, {“name”:“Queen's Gambit Declined, Tarrasch, Bogolyubov variation”,“eco_code”:“D34”,“moves”:}, {“name”:“Queen's Gambit Declined, Tarrasch, Stoltz variation”,“eco_code”:“D34”,“moves”:}, {“name”:“Queen's Gambit Declined, Ragozin variation”,“eco_code”:“D38”,“moves”:}, {“name”:“Queen's Gambit Declined, Ragozin, Vienna variation”,“eco_code”:“D39”,“moves”:}, {“name”:“Queen's Gambit Declined, Semi-Tarrasch defence”,“eco_code”:“D40”,“moves”:}, {“name”:“Queen's Gambit Declined, Semi-Tarrasch, symmetrical variation”,“eco_code”:“D40”,“moves”:}, {“name”:“Queen's Gambit Declined, Semi-Tarrasch, Levenfish variation”,“eco_code”:“D40”,“moves”:}, {“name”:“Queen's Gambit Declined, Semi-Tarrasch defence, Pillsbury variation”,“eco_code”:“D40”,“moves”:}, {“name”:“Queen's Gambit Declined, Semi-Tarrasch, 5.cd”,“eco_code”:“D41”,“moves”:}, {“name”:“Queen's Gambit Declined, Semi-Tarrasch, Kmoch variation”,“eco_code”:“D41”,“moves”:}, {“name”:“Queen's Gambit Declined, Semi-Tarrasch, San Sebastian variation”,“eco_code”:“D41”,“moves”:}, {“name”:“Queen's Gambit Declined, Semi-Tarrasch with e3”,“eco_code”:“D41”,“moves”:}, {“name”:“Queen's Gambit Declined, Semi-Tarrasch, 7.Bd3”,“eco_code”:“D42”,“moves”:}, {“name”:“Queen's Gambit Declined, Lasker defence”,“eco_code”:“D56”,“moves”:}, {“name”:“Queen's Gambit Declined, Lasker defence, Teichmann variation”,“eco_code”:“D56”,“moves”:}, {“name”:“Queen's Gambit Declined, Lasker defence, Russian variation”,“eco_code”:“D56”,“moves”:}, {“name”:“Queen's Gambit Declined, Lasker defence, main line”,“eco_code”:“D57”,“moves”:}, {“name”:“Queen's Gambit Declined, Lasker defence, Bernstein variation”,“eco_code”:“D57”,“moves”:}, {“name”:“Queen's Gambit Declined, Tartakower (Makagonov-Bondarevsky) system”,“eco_code”:“D58”,“moves”:}, {“name”:“Queen's Gambit Declined, Tartakower (Makagonov-Bondarevsky) system, 8.cd Nxd5”,“eco_code”:“D59”,“moves”:}, {“name”:“Queen's Gambit Declined, Tartakower variation”,“eco_code”:“D59”,“moves”:}, {“name”:“Queen's Gambit Declined, Orthodox defence”,“eco_code”:“D60”,“moves”:}, {“name”:“Queen's Gambit Declined, Orthodox defence, Botvinnik variation”,“eco_code”:“D60”,“moves”:}, {“name”:“Queen's Gambit Declined, Orthodox defence, Rauzer variation”,“eco_code”:“D60”,“moves”:}, {“name”:“Queen's Gambit Declined, Orthodox defence, Rubinstein variation”,“eco_code”:“D61”,“moves”:}, {“name”:“Queen's Gambit Declined, Orthodox defence, 7.Qc2 c5, 8.cd (Rubinstein)”,“eco_code”:“D62”,“moves”:}, {“name”:“Queen's Gambit Declined, Orthodox defence, 7.Rc1”,“eco_code”:“D63”,“moves”:}, {“name”:“Queen's Gambit Declined, Orthodox defence, Pillsbury attack”,“eco_code”:“D63”,“moves”:}, {“name”:“Queen's Gambit Declined, Orthodox defence, Capablanca variation”,“eco_code”:“D63”,“moves”:}, {“name”:“Queen's Gambit Declined, Orthodox defence, Swiss (Henneberger) variation”,“eco_code”:“D63”,“moves”:}, {“name”:“Queen's Gambit Declined, Orthodox defence, Swiss, Karlsbad variation”,“eco_code”:“D63”,“moves”:}, {“name”:“Queen's Gambit Declined, Orthodox defence”,“eco_code”:“D63”,“moves”:}, {“name”:“Queen's Gambit Declined, Orthodox defence, Rubinstein attack (with Rc1)”,“eco_code”:“D64”,“moves”:}, {“name”:“Queen's Gambit Declined, Orthodox defence, Rubinstein attack, Wolf variation”,“eco_code”:“D64”,“moves”:}, {“name”:“Queen's Gambit Declined, Orthodox defence, Rubinstein attack, Karlsbad variation”,“eco_code”:“D64”,“moves”:}, {“name”:“Queen's Gambit Declined, Orthodox defence, Rubinstein attack, Gruenfeld variation”,“eco_code”:“D64”,“moves”:}, {“name”:“Queen's Gambit Declined, Orthodox defence, Rubinstein attack, main line”,“eco_code”:“D65”,“moves”:}, {“name”:“Queen's Gambit Declined, Orthodox defence, Bd3 line”,“eco_code”:“D66”,“moves”:}, {“name”:“Queen's Gambit Declined, Orthodox defence, Bd3 line, fianchetto variation”,“eco_code”:“D66”,“moves”:}, {“name”:“Queen's Gambit Declined, Orthodox defence, Bd3 line, Capablanca freeing manoevre”,“eco_code”:“D67”,“moves”:}, {“name”:“Queen's Gambit Declined, Orthodox defence, Bd3 line, Janowski variation”,“eco_code”:“D67”,“moves”:}, {“name”:“Queen's Gambit Declined, Orthodox defence, Bd3 line”,“eco_code”:“D67”,“moves”:}, {“name”:“Queen's Gambit Declined, Orthodox defence, Bd3 line, Alekhine variation”,“eco_code”:“D67”,“moves”:}, {“name”:“Queen's Gambit Declined, Orthodox defence, Bd3 line, 11.O-O”,“eco_code”:“D67”,“moves”:}, {“name”:“Queen's Gambit Declined, Orthodox defence, classical variation”,“eco_code”:“D68”,“moves”:}, {“name”:“Queen's Gambit Declined, Orthodox defence, classical, 13.d1b1 (Maroczy)”,“eco_code”:“D68”,“moves”:}, {“name”:“Queen's Gambit Declined, Orthodox defence, classical, 13.d1c2 (Vidmar)”,“eco_code”:“D68”,“moves”:}, {“name”:“Queen's Gambit Declined, Orthodox defence, classical, 13.de”,“eco_code”:“D69”,“moves”:}, {“name”:“Neo-Gruenfeld, 5.cd”,“eco_code”:“D71”,“moves”:}, {“name”:“Neo-Gruenfeld, 5.cd, main line”,“eco_code”:“D72”,“moves”:}, {“name”:“Neo-Gruenfeld, 6.cd Nxd5, 7.O-O”,“eco_code”:“D74”,“moves”:}, {“name”:“Neo-Gruenfeld, 6.cd Nxd5, 7.O-O c5, 8.Nc3”,“eco_code”:“D75”,“moves”:}, {“name”:“Neo-Gruenfeld, 6.cd Nxd5, 7.O-O c5, 8.dc”,“eco_code”:“D75”,“moves”:}, {“name”:“Neo-Gruenfeld, 6.cd Nxd5, 7.O-O Nb6”,“eco_code”:“D76”,“moves”:}, {“name”:“Neo-Gruenfeld, 6.O-O”,“eco_code”:“D77”,“moves”:}, {“name”:“Neo-Gruenfeld, 6.O-O c6”,“eco_code”:“D78”,“moves”:}, {“name”:“Neo-Gruenfeld, 6.O-O, main line”,“eco_code”:“D79”,“moves”:}, {“name”:“Gruenfeld, Gruenfeld gambit”,“eco_code”:“D83”,“moves”:}, {“name”:“Gruenfeld, Gruenfeld gambit, Capablanca variation”,“eco_code”:“D83”,“moves”:}, {“name”:“Gruenfeld, Gruenfeld gambit, Botvinnik variation”,“eco_code”:“D83”,“moves”:}, {“name”:“Gruenfeld, Gruenfeld gambit accepted”,“eco_code”:“D84”,“moves”:}, {“name”:“Gruenfeld, exchange variation”,“eco_code”:“D85”,“moves”:}, {“name”:“Gruenfeld, modern exchange variation”,“eco_code”:“D85”,“moves”:}, {“name”:“Gruenfeld, exchange, classical variation”,“eco_code”:“D86”,“moves”:}, {“name”:“Gruenfeld, exchange, Larsen variation”,“eco_code”:“D86”,“moves”:}, {“name”:“Gruenfeld, exchange, Simagin's lesser variation”,“eco_code”:“D86”,“moves”:}, {“name”:“Gruenfeld, exchange, Simagin's improved variation”,“eco_code”:“D86”,“moves”:}, {“name”:“Gruenfeld, exchange, Spassky variation”,“eco_code”:“D87”,“moves”:}, {“name”:“Gruenfeld, exchange, Seville variation”,“eco_code”:“D87”,“moves”:}, {“name”:“Gruenfeld, Spassky variation, main line, 10…cd, 11.cd”,“eco_code”:“D88”,“moves”:}, {“name”:“Gruenfeld, Spassky variation, main line, 13.Bd3”,“eco_code”:“D89”,“moves”:}, {“name”:“Gruenfeld, exchange, Sokolsky variation”,“eco_code”:“D89”,“moves”:}, {“name”:“Gruenfeld, Russian variation”,“eco_code”:“D96”,“moves”:}, {“name”:“Gruenfeld, Russian variation with e4”,“eco_code”:“D97”,“moves”:}, {“name”:“Gruenfeld, Russian, Alekhine (Hungarian) variation”,“eco_code”:“D97”,“moves”:}, {“name”:“Gruenfeld, Russian, Szabo (Boleslavsky) variation”,“eco_code”:“D97”,“moves”:}, {“name”:“Gruenfeld, Russian, Levenfish variation”,“eco_code”:“D97”,“moves”:}, {“name”:“Gruenfeld, Russian, Byrne (Simagin) variation”,“eco_code”:“D97”,“moves”:}, {“name”:“Gruenfeld, Russian, Prins variation”,“eco_code”:“D97”,“moves”:}, {“name”:“Gruenfeld, Russian, Smyslov variation”,“eco_code”:“D98”,“moves”:}, {“name”:“Gruenfeld, Russian, Keres variation”,“eco_code”:“D98”,“moves”:}, {“name”:“Catalan, closed, 5.Nf3”,“eco_code”:“E06”,“moves”:}, {“name”:“Catalan, closed, 6…Nbd7”,“eco_code”:“E07”,“moves”:}, {“name”:“Catalan, closed, Botvinnik variation”,“eco_code”:“E07”,“moves”:}, {“name”:“Catalan, closed, 7.Qc2”,“eco_code”:“E08”,“moves”:}, {“name”:“Catalan, closed, Zagoryansky variation”,“eco_code”:“E08”,“moves”:}, {“name”:“Catalan, closed, Qc2 & b3”,“eco_code”:“E08”,“moves”:}, {“name”:“Catalan, closed, Spassky gambit”,“eco_code”:“E08”,“moves”:}, {“name”:“Catalan, closed, main line”,“eco_code”:“E09”,“moves”:}, {“name”:“Catalan, closed, Sokolsky variation”,“eco_code”:“E09”,“moves”:}, {“name”:“Nimzo-Indian, Spielmann variation”,“eco_code”:“E22”,“moves”:}, {“name”:“Nimzo-Indian, Spielmann, 4…c5, 5.dc Nc6”,“eco_code”:“E23”,“moves”:}, {“name”:“Nimzo-Indian, Spielmann, Karlsbad variation”,“eco_code”:“E23”,“moves”:}, {“name”:“Nimzo-Indian, Spielmann, San Remo variation”,“eco_code”:“E23”,“moves”:}, {“name”:“Nimzo-Indian, Spielmann, Staahlberg variation”,“eco_code”:“E23”,“moves”:}, {“name”:“Nimzo-Indian, Saemisch variation”,“eco_code”:“E24”,“moves”:}, {“name”:“Nimzo-Indian, Saemisch, Botvinnik variation”,“eco_code”:“E24”,“moves”:}, {“name”:“Nimzo-Indian, Saemisch variation”,“eco_code”:“E25”,“moves”:}, {“name”:“Nimzo-Indian, Saemisch, Keres variation”,“eco_code”:“E25”,“moves”:}, {“name”:“Nimzo-Indian, Saemisch, Romanovsky variation”,“eco_code”:“E25”,“moves”:}, {“name”:“Nimzo-Indian, Saemisch variation”,“eco_code”:“E26”,“moves”:}, {“name”:“Nimzo-Indian, Saemisch, O'Kelly variation”,“eco_code”:“E26”,“moves”:}, {“name”:“Nimzo-Indian, Saemisch variation”,“eco_code”:“E27”,“moves”:}, {“name”:“Nimzo-Indian, Saemisch variation”,“eco_code”:“E28”,“moves”:}, {“name”:“Nimzo-Indian, Saemisch, main line”,“eco_code”:“E29”,“moves”:}, {“name”:“Nimzo-Indian, Saemisch, Capablanca variation”,“eco_code”:“E29”,“moves”:}, {“name”:“Nimzo-Indian, Leningrad variation”,“eco_code”:“E30”,“moves”:}, {“name”:“Nimzo-Indian, Leningrad, …b5 gambit”,“eco_code”:“E30”,“moves”:}, {“name”:“Nimzo-Indian, Leningrad, main line”,“eco_code”:“E31”,“moves”:}, {“name”:“Nimzo-Indian, classical variation”,“eco_code”:“E32”,“moves”:}, {“name”:“Nimzo-Indian, classical, Adorjan gambit”,“eco_code”:“E32”,“moves”:}, {“name”:“Nimzo-Indian, classical, 4…Nc6”,“eco_code”:“E33”,“moves”:}, {“name”:“Nimzo-Indian, classical, Milner-Barry (Zurich) variation”,“eco_code”:“E33”,“moves”:}, {“name”:“Nimzo-Indian, classical, Noa variation”,“eco_code”:“E34”,“moves”:}, {“name”:“Nimzo-Indian, classical, Noa variation, 5.cd ed”,“eco_code”:“E35”,“moves”:}, {“name”:“Nimzo-Indian, classical, Noa variation, 5.a3”,“eco_code”:“E36”,“moves”:}, {“name”:“Nimzo-Indian, classical, Botvinnik variation”,“eco_code”:“E36”,“moves”:}, {“name”:“Nimzo-Indian, classical, Noa variation, main line”,“eco_code”:“E36”,“moves”:}, {“name”:“Nimzo-Indian, classical, Noa variation, main line, 7.Qc2”,“eco_code”:“E37”,“moves”:}, {“name”:“Nimzo-Indian, classical, San Remo variation”,“eco_code”:“E37”,“moves”:}, {“name”:“Nimzo-Indian, classical, 4…c5”,“eco_code”:“E38”,“moves”:}, {“name”:“Nimzo-Indian, classical, Pirc variation”,“eco_code”:“E39”,“moves”:}, {“name”:“Nimzo-Indian, 4.e3 c5”,“eco_code”:“E41”,“moves”:}, {“name”:“Nimzo-Indian, e3, Huebner variation”,“eco_code”:“E41”,“moves”:}, {“name”:“Nimzo-Indian, 4.e3 c5, 5.Ne2 (Rubinstein)”,“eco_code”:“E42”,“moves”:}, {“name”:“Nimzo-Indian, Fischer variation”,“eco_code”:“E43”,“moves”:}, {“name”:“Nimzo-Indian, Fischer variation, 5.Ne2”,“eco_code”:“E44”,“moves”:}, {“name”:“Nimzo-Indian, 4.e3 O-O”,“eco_code”:“E46”,“moves”:}, {“name”:“Nimzo-Indian, Reshevsky variation”,“eco_code”:“E46”,“moves”:}, {“name”:“Nimzo-Indian, Simagin variation”,“eco_code”:“E46”,“moves”:}, {“name”:“Nimzo-Indian, 4.e3 O-O, 5.Bd3”,“eco_code”:“E47”,“moves”:}, {“name”:“Nimzo-Indian, 4.e3 O-O, 5.Bd3 d5”,“eco_code”:“E48”,“moves”:}, {“name”:“Nimzo-Indian, 4.e3 e8g8, 5.Nf3, without …d5”,“eco_code”:“E50”,“moves”:}, {“name”:“Nimzo-Indian, 4.e3 e8g8, 5.Nf3 d7d5”,“eco_code”:“E51”,“moves”:}, {“name”:“Nimzo-Indian, 4.e3, Ragozin variation”,“eco_code”:“E51”,“moves”:}, {“name”:“Nimzo-Indian, 4.e3, main line with …b6”,“eco_code”:“E52”,“moves”:}, {“name”:“Nimzo-Indian, 4.e3, main line with …c5”,“eco_code”:“E53”,“moves”:}, {“name”:“Nimzo-Indian, 4.e3, Keres variation”,“eco_code”:“E53”,“moves”:}, {“name”:“Nimzo-Indian, 4.e3, Gligoric system with 7…Nbd7”,“eco_code”:“E53”,“moves”:}, {“name”:“Nimzo-Indian, 4.e3, Gligoric system with 7…dc”,“eco_code”:“E54”,“moves”:}, {“name”:“Nimzo-Indian, 4.e3, Gligoric system, Smyslov variation”,“eco_code”:“E54”,“moves”:}, {“name”:“Nimzo-Indian, 4.e3, Gligoric system, Bronstein variation”,“eco_code”:“E55”,“moves”:}, {“name”:“Nimzo-Indian, 4.e3, main line with 7…Nc6”,“eco_code”:“E56”,“moves”:}, {“name”:“Nimzo-Indian, 4.e3, main line with 8…dc and 9…cd”,“eco_code”:“E57”,“moves”:}, {“name”:“Nimzo-Indian, 4.e3, main line with 8…Bxc3”,“eco_code”:“E58”,“moves”:}, {“name”:“Nimzo-Indian, 4.e3, main line”,“eco_code”:“E59”,“moves”:}, {“name”:“King's Indian, fianchetto variation”,“eco_code”:“E62”,“moves”:}, {“name”:“King's Indian, fianchetto, Larsen system”,“eco_code”:“E62”,“moves”:}, {“name”:“King's Indian, fianchetto, Kavalek (Bronstein) variation”,“eco_code”:“E62”,“moves”:}, {“name”:“King's Indian, fianchetto with …Nc6”,“eco_code”:“E62”,“moves”:}, {“name”:“King's Indian, fianchetto, Uhlmann (Szabo) variation”,“eco_code”:“E62”,“moves”:}, {“name”:“King's Indian, fianchetto, lesser Simagin (Spassky) variation”,“eco_code”:“E62”,“moves”:}, {“name”:“King's Indian, fianchetto, Simagin variation”,“eco_code”:“E62”,“moves”:}, {“name”:“King's Indian, fianchetto, Panno variation”,“eco_code”:“E63”,“moves”:}, {“name”:“King's Indian, fianchetto, Yugoslav system”,“eco_code”:“E64”,“moves”:}, {“name”:“King's Indian, fianchetto, Yugoslav, 7.O-O”,“eco_code”:“E65”,“moves”:}, {“name”:“King's Indian, fianchetto, Yugoslav Panno”,“eco_code”:“E66”,“moves”:}, {“name”:“King's Indian, fianchetto with …Nd7”,“eco_code”:“E67”,“moves”:}, {“name”:“King's Indian, fianchetto, classical variation”,“eco_code”:“E67”,“moves”:}, {“name”:“King's Indian, fianchetto, classical variation, 8.e4”,“eco_code”:“E68”,“moves”:}, {“name”:“King's Indian, fianchetto, classical main line”,“eco_code”:“E69”,“moves”:}, {“name”:“King's Indian, Averbakh, 6…c5”,“eco_code”:“E74”,“moves”:}, {“name”:“King's Indian, Averbakh, main line”,“eco_code”:“E75”,“moves”:}, {“name”:“King's Indian, Four pawns attack”,“eco_code”:“E76”,“moves”:}, {“name”:“King's Indian, Four pawns attack, dynamic line”,“eco_code”:“E76”,“moves”:}, {“name”:“King's Indian, Four pawns attack, 6.Be2”,“eco_code”:“E77”,“moves”:}, {“name”:“King's Indian, Six pawns attack”,“eco_code”:“E77”,“moves”:}, {“name”:“King's Indian, Four pawns attack”,“eco_code”:“E77”,“moves”:}, {“name”:“King's Indian, Four pawns attack, Florentine gambit”,“eco_code”:“E77”,“moves”:}, {“name”:“King's Indian, Four pawns attack, with Be2 and Nf3”,“eco_code”:“E78”,“moves”:}, {“name”:“King's Indian, Four pawns attack, main line”,“eco_code”:“E79”,“moves”:}, {“name”:“King's Indian, Saemisch variation”,“eco_code”:“E80”,“moves”:}, {“name”:“King's Indian, Saemisch, 5…O-O”,“eco_code”:“E81”,“moves”:}, {“name”:“King's Indian, Saemisch, Byrne variation”,“eco_code”:“E81”,“moves”:}, {“name”:“King's Indian, Saemisch, double fianchetto variation”,“eco_code”:“E82”,“moves”:}, {“name”:“King's Indian, Saemisch, 6…Nc6”,“eco_code”:“E83”,“moves”:}, {“name”:“King's Indian, Saemisch, Ruban variation”,“eco_code”:“E83”,“moves”:}, {“name”:“King's Indian, Saemisch, Panno formation”,“eco_code”:“E83”,“moves”:}, {“name”:“King's Indian, Saemisch, Panno main line”,“eco_code”:“E84”,“moves”:}, {“name”:“King's Indian, Saemisch, orthodox variation”,“eco_code”:“E85”,“moves”:}, {“name”:“King's Indian, Saemisch, orthodox, 7.Nge2 c6”,“eco_code”:“E86”,“moves”:}, {“name”:“King's Indian, Saemisch, orthodox, 7.d5”,“eco_code”:“E87”,“moves”:}, {“name”:“King's Indian, Saemisch, orthodox, Bronstein variation”,“eco_code”:“E87”,“moves”:}, {“name”:“King's Indian, Saemisch, orthodox, 7.d5 c6”,“eco_code”:“E88”,“moves”:}, {“name”:“King's Indian, Saemisch, orthodox main line”,“eco_code”:“E89”,“moves”:}, {“name”:“King's Indian, orthodox variation”,“eco_code”:“E94”,“moves”:}, {“name”:“King's Indian, orthodox, Donner variation”,“eco_code”:“E94”,“moves”:}, {“name”:“King's Indian, orthodox, 7…Nbd7”,“eco_code”:“E94”,“moves”:}, {“name”:“King's Indian, orthodox, 7…Nbd7, 8.Re1”,“eco_code”:“E95”,“moves”:}, {“name”:“King's Indian, orthodox, 7…Nbd7, main line”,“eco_code”:“E96”,“moves”:}, {“name”:“King's Indian, orthodox, Aronin-Taimanov variation (Yugoslav attack / Mar del Plata variation)”,“eco_code”:“E97”,“moves”:}, {“name”:“King's Indian, orthodox, Aronin-Taimanov, bayonet attack”,“eco_code”:“E97”,“moves”:}, {“name”:“King's Indian, orthodox, Aronin-Taimanov, 9.Ne1”,“eco_code”:“E98”,“moves”:}, {“name”:“King's Indian, orthodox, Aronin-Taimanov, main line”,“eco_code”:“E99”,“moves”:}, {“name”:“King's Indian, orthodox, Aronin-Taimanov, Benko attack”,“eco_code”:“E99”,“moves”:} ]}