Influence sur la diagonale b8 h2

   [Event ""]  [Site "Paris"]  [Date "1842"]  [Round ""]  [White "Rousseau, Eugene"]  [Black "De Saint Amant, Pierre Charles Four"]  [Result "0-1"]  [ECO "B21"]  [SetUp "1"]  [FEN "r1b2rk1/1pq4p/p1n1p1p1/2pp4/2P2P2/1P1P1N2/PQ4PP/3BRRK1 b - - 0 18"]  [PlyCount "35"]  [EventDate "1842"]  [EventType "game"]  [EventRounds "1"]  [EventCountry "FRA"]  [Source "ChessBase"]  [SourceDate "1998.11.10"]   18... Qxf4 19. g3 Qd6 20. cxd5 exd5 21. Ng5 Bf5 22. Rf4 Nd4 23. b4 Qf6 24. Qg2  Rad8 25. h4 h6 26. Nf3 Ne6 27. Ne5 Nxf4 28. gxf4 Qxh4 29. Rf1 Kh7 30. Bb3 Qh3  31. Qf2 c4 32. Bd1 Bxd3 33. Re1 Be4 34. Nf3 Rxf4 35. Re3 Rg4+ 0-1