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A41 Modern Defense8a7b6c5d4e3f2g1h
1.d4 g6 2.c4 ♗g7 3.♘c3 d6

A41 is the opening Modern Defense of the volume A · Flank openings: 6 half-moves to the position in the diagram, 11 variations in the ECO table.

What the games say

5,765 games in the collections, from 1853 to 2022. Mean rating of the games with ratings: 2430.

White wins 35 %, draws 33 %, Black wins 31 %

Most games: Mestrovic, Zvonimir (74), Hodgson, Julian M (61), Jansa, Vlastimil (60), McNab, Colin Anderson (60), Azmaiparashvili, Zurab (56)

All 11 variations

  1. Modern Defense 1.d4 g6 2.c4 ♗g7 3.♘c3 d6
  2. Modern Defense: Neo-Modern Defense 1.d4 g6 2.c4 ♗g7 3.e4 e5
  3. Old Indian Defense 1.d4 d6 2.c4
  4. Queen's Pawn Game 1.d4 d6
  5. Queen's Pawn Game: Rossolimo Variation 1.d4 d6 2.♘f3 g6
  6. Rat Defense: English Rat 1.d4 d6 2.c4 e5
  7. Rat Defense: English Rat, Lisbon Gambit 1.d4 d6 2.c4 e5 3.dxe5 ♘c6
  8. Rat Defense: English Rat, Pounds Gambit 1.d4 d6 2.c4 e5 3.dxe5 ♗e6
  9. Robatsch Defense: Rossolimo Variation 1.d4 d6 2.♘f3 g6 3.c4 ♗g7 4.e4 ♗g4
  10. Wade Defense 1.d4 d6 2.♘f3 ♗g4
  11. Zukertort Opening: Wade Defense, Chigorin Plan 1.d4 d6 2.♘f3 ♗g4 3.c4 ♘d7 4.♕b3 ♖b8