Eco opening database; D00-D99
To view the ECO code, open D00-D99.txt or D00-D99.pgn
The Queen's Pawn Game (D00-09)
The Slav Defense (D10-19)
The Queen's Gambit Accepted & Declined (D20-29, D30-69)
The Grunfeld Defense and Neo-Grunfeld (D70-79)
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D00= Queen's pawn game
D01= Richter-Veresov attack
D02= Queen's pawn game, 2. Nf3
D03= Torre attack, Tartakower variation
D04= Queen's pawn game
D05= Queen's pawn game, Zukertort variation
D06= Queen's Gambit
D07= QGD; Chigorin defense
D08= QGD; Albin counter-gambit
D09= QGD; Albin counter-gambit, 5.g3
D10= QGD; Slav defense
D11= QGD; Slav defense, 3.Nf3
D12= QGD; Slav defense, 4.e3 Bf5
D13= QGD; Slav defense, Exchange variation
D14= QGD; Slav defense, Exchange variation
D15= QGD; Slav accepted, Exchange variation, 6.Bf4 Bf5
D16= QGD; Slav accepted, Alapin variation
D17= QGD; Slav defense, Czech defence
D18= QGD; Dutch variation
D19= QGD; Dutch variation
D20= Queen's Gambit accepted
D21= QGA, 3.Nf3
D22= QGA; Alekhine defense
D23= Queen's gambit accepted
D24= QGA, 4.Nc3
D25= QGA, 4.e3
D26= QGA; classical variation
D27= QGA; classical variation
D28= QGA; Classical variation 7.Qe2
D29= QGA; Classical variation 8...Bb7
D30= QGD
D31= QGD, 3.Nc3
D32= QGD; Tarrasch defense
D33= QGD; Tarrasch, Schlechter-Rubinstein system
D34= QGD; Tarrasch, 7...Be7
D35= QGD; 3...Nf6
D36= QGD; Exchange, positional line, 6.Qc2
D37= QGD; 4.Nf3
D38= QGD; Ragozin variation
D39= QGD; Ragozin, Vienna variation
D40= QGD; Semi-Tarrasch defense
D41= QGD; Semi-Tarrasch, 5.cd
D42= QGD; Semi-Tarrasch, 7.Bd3
D43= QGD; Semi-Slav
D44= QGD; Semi-Slav 5.Bg5 dc
D45= QGD; Semi-Slav 5.e3
D46= QGD; Semi-Slav 6.Bd3
D47= QGD; Semi-Slav 7.Bc4
D48= QGD; Meran, 8...a6
D49= QGD; Meran, 11. Nxb5
D50= QGD; 4.Bg5
D51= QGD; 4.Bg5 Nbd7
D52= QGD
D53= QGD; 4.Bg5 Be7
D54= QGD; Anti-neo-Orthodox variation
D55= QGD; 6.Nf3
D56= QGD; Lasker defense
D57= QGD; Lasker defense, Main line
D58= QGD; Tartakower (Makagonov-Bondarevsky) system
D59= QGD; Tartakower (Makagonov-Bondarevsky) system, 8.cd Nxd5
D60= QGD; Orthodox defense
D61= QGD; Orthodox defense, Rubinstein variation
D62= QGD; Orthodox defense, 7.Qc2 c5, 8.cd (Rubinstein)
D63= QGD; Orthodox defense, 7.Rc1
D64= QGD; Orthodox defense, Rubinstein attack (with Rc1)
D65= QGD; Orthodox defense, Rubinstein attack, Main line
D66= QGD; Orthodox defense, Bd3 line
D67= QGD; Orthodox defense, Bd3 line, Capablanca freeing manoever
D68= QGD; Orthodox defense, Classical variation
D69= QGD; Orthodox defense, Classical, 13.dxe5
D70= Neo-Gruenfeld defense
D71= Neo-Gruenfeld, 5.cd
D72= Neo-Gruenfeld, 5.cd, Main line
D73= Neo-Gruenfeld, 5.Nf3
D74= Neo-Gruenfeld, 6.cd Nxd5, 7.O-O
D75= Neo-Gruenfeld, 6.cd Nxd5, 7.O-O c5, 8.Nc3
D76= Neo-Gruenfeld, 6.cd Nxd5, 7.O-O Nb6
D77= Neo-Gruenfeld, 6.O-O
D78= Neo-Gruenfeld, 6.O-O c6
D79= Neo-Gruenfeld, 6.O-O, Main line
D80= Gruenfeld defense
D81= Gruenfeld; Russian variation
D82= Gruenfeld 4.Bf4
D83= Gruenfeld gambit
D84= Gruenfeld gambit accepted
D85= Gruenfeld, exchange variation
D86= Gruenfeld, Exchange, Classical variation
D87= Gruenfeld, Exchange, Spassky variation
D88= Gruenfeld, Spassky variation, Main line, 10...cd, 11.cd
D89= Gruenfeld, Spassky variation, Main line, 13.Bd3
D90= Gruenfeld, Three knights variation
D91= Gruenfeld, Three knights variation
D92= Gruenfeld, 5.Bf4
D93= Gruenfeld with 5. Bf4 O-O 6. e3
D94= Gruenfeld, 5.e3
D95= Gruenfeld with 5. e3 O-O 6. Qb3
D96= Gruenfeld, Russian variation
D97= Gruenfeld, Russian variation with 7. e4
D98= Gruenfeld, Russian, Smyslov variation
D99= Gruenfeld defense, Smyslov, Main line