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Eco Code D00-D99

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ECOOpening NameMOVES (Algebraic System)
   
D00-D09 Queen's pawn game 1.d4-d5
  Others (D00) 2.Others
  Richter-Veresov attack (D01) 2.Nc3-Nf6; 3.Bg5
  2.Nf3 variation (D02-D05) 2.Nf3
  Queen's gambit (D06-D09) 2.c4
   
D10-D19 Queen's gambit declined: 1.d4-d5; 2.c4-c6
  Slav defense  
  Others (D10) 3.Others
  3.Nf3 variation (D11-D19) 3.Nf3
   
D20-D29 Queen's gambit accepted 1.d4-d5; 2.c4-dxc4
  Others (D20) 3.Others
  3.Nf3 (D21-D29) 3.Nf3
   
D30-D39 Queen's gambit declined 1.d4-d5; 2.c4-e6
  Others (D30) 3.Others
  3.Nc3(D31-D39) 3.Nc3
   
D40-D49 Queen's gambit declined: 1.d4-d5; 2.c4-e6; 3.Nc3-Nf6;
  semi-Tarrasch and semi- 4.Nf3
  Slav  
  Semi-Tarrasch defense (D40-D42) 4...c5
  Semi-Slav (D43-D49) 4...c6
   
D50-D59 Queen's gambit declined 1.d4-d5; 2.c4-e6; 3.Nc3-Nf6;
  (4.Bg5) 4.Bg5
  Others (D50) 4...Others
  4...Nbd7 variation (D51-D53) 4...Nbd7
  4..Be7 variation (D54-D59) 4...Be7
     
D60-D69 Queen's gambit declined: 1.d4-d5; 2.c4-e6; 3.Nc3-Nf6;
  Orthodox defense 4.Bg5-Be7; 5.e3-O-O; 6.Nf3-Nbd7
  Others (D60) 7.Others
  Rubinstein variation (D61-D62) 7.Qc2
  7.Rc1 variation (D63-D69) 7.Rc1
   
D70-D79 Neo-Gruenfeld defense 1.d4-Nf6; 2.c4-g6; 3.g3-d5;
    4.Bg2-Bg7
  Others (D70) 5.f3-d5 / 5.g3-d5 others
  5.cxd5 variation (D71-D72) 5.cxd5-Nxd5
  5.Nf3 variation (D73-D79) 5.Nf3
   
D80-D89 Gruenfeld defense 1.d4-Nf6; 2.c4-g6; 3.Nc3-d5
  Others (D80) 4.g4 / 4.Bg5
  Russian variation (D81) 4.Qb3
  4.Bf4 variation (D82-D84) 4.Bf4
  Exchange variation (D85-D89) 4.cxd5-Nxd5
   
D90-D99 Gruenfeld defense: three 1.d4-Nf6; 2.c4-g6; 3.Nc3-d5;
  knights variation 4.Nf3
  Others (D90) 4...c6 / 4...Bg7-others
  5.Bg5 variation (D91) 4...Bg7; 5.Bg5
  5.Bf4 (D92-D93) 4...Bg7; 5.Bf4
  5.e3 (D94-D95) 4...Bg7; 5.e5
  Russian variation (D96-D99) 4...Bg7; 5.Qb3

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