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Eco Code A00-A99

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ECO Opening Name MOVES (Algebraic System)
   
A00-A09 1. Others 1. Others
  Others (A00) 1.Others
  Nimzovich-Larsen attack (A01) 1.b3
  Bird's opening (A02-A03) 1.f4
  Reti opening(A04-A09) 1.Nf3
   
A10-A19 English Opening 1.c4
  Others (A10) 1...Others
  Caro-Kann def. system (A11-A12) 1...c6
  1...e6 variation (A13-A14) 1...e6
  Anglo-Indian defense (A15-A19) 1...Nf6
   
A20-A29 English Opening 1.c4-e5
  Others (A20) 2.Others
  2. Nc3 variation (A21-A29) 2.Nc3
   
A30-A39 English opening: 1.c4-c5
  symmetrical variation  
  Others (A30) 2.Others
  2.Nf3 variation (A31-A33) 2.Nf3
  2.Nc3 variation (A34-A39) 2.Nc3
   
A40-A49 Queen's pawn 1.d4
  Others (A40) 1...Others
  1...d6 variation (A41-A42) 1...d6
  Old Benoni defense (A43-A44) 1...c5; 2.d5
  1...Nf6 variation (A45-A49) 1...Nf6
   
A50-A59 Queen's pawn 1.d4-Nf6; 2.c4
  Others (A50) 2...Others
  Budapest defense (A51-A52) 2...e5
  Old Indian defense (A53-A55) 2...d6
  2...c5 variation (A56-A59) 2...c5
   
A60-A69 Benoni defense 1.d4-Nf6; 2.c4-c5; 3.d5-e6
  Others (A60) 4...Others
  4.Nc3 variation (A61-A69) 4.Nc3
   
A70-A79 Benoni defense: classical 1.d4-Nf6; 2.c4-c5; 3.d5-e6;
  (with e4 and Nf3) 4.Nc3-exd5; 5.cxd5-d6;
    6.e4-g6; 7.Nf3
  Others (A70) 7...Others
  Others (A71-A79) 7...Bg7
   
A80-A89 Dutch defense 1.d4-f5
  Others (A80) 2.Others
  3...g3 variation (A81) 2.g3
  Staunton gambit (A82-A83) 2.e4
  2...c4 variation (A84-A89) 2.c4
     
A90-A99 Dutch defense 1.d4-f5; 2.c4-Nf6; 3.g3-e6;
    4.Bg2
  Others (A90) 4...Others
  4...Be7 variation (A91-A99) 4...Be7

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Super-Positional
 D35-A29-D41-E14
 C07-B06-B17-E18
Positional
 E15-D85-A30-D45
 B17-C42-E15-E12
Usual
 C42-B33-D30-B90
 E15-D27-C42-D20
Attack
 C42-E12-C92-E15
 B90-B85-E92-E97
Super-Attack
 C92-C95-B88-B10
 B92-D41-A30-E61
 
Most Popular Openings
 BENONI (1-2)
 BUDAPEST
 CARO-KANN
 CHIGORIN
 DRAGON
 DUTCH (1-2)
 ENGLISH (1-2-3)
 GRUENFELD (1-2-3)
 KING'S GAMBIT
 KING'S INDIAN (1-2)
 KING'S INDIAN(3-4)
 KING'S INDIAN(5)
 NAJDORF
 NIMZOINDIAN (2-3)
 NIMZOINDIAN (4-5)
 OPEN SPANISH
 POLISH (Sokolsky)
 QUEEN'S INDIAN(1)
 QUEEN'S INDIAN(2)
 RETI
 RICHTER-RAUZER
 SLAV
 STEINITZ (1-2)
 
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