Lutter contre c4 tenu par b3 – Leçons vidéos et Cours d'échecs

Gain Noir

   [Event "Moscow-ch 17th"]  [Site "Moscow "]  [Date "1937.11.??"]  [Round "?"]  [White "Naglis, Boris"]  [Black "Kotov, Alexander"]  [Result "0-1"]  [ECO "B72"]  [Annotator "RR"]  [SetUp "1"]  [FEN "2rqk2r/pp1bppbp/3p2p1/3Nn3/2PNP3/1P2B3/P2Q1PPP/2R1K2R b Kk - 0 13"]  [PlyCount "37"]  [EventDate "1937.11.??"]  [EventType "tourn"]  [EventRounds "17"]  [EventCountry "URS"]  [Source "ChessBase"]  [SourceDate "2011.11.24"]   13... b5 $1 14. f4 $1 (14. Nxb5 $6 Bxb5 15. f4 (15. cxb5 $4 Rxc1+ 16. Qxc1 Nd3+  ) 15... Nxc4 16. bxc4 Bxc4 $17) 14... Ng4 15. Bg1 (15. Nxb5 $142 $5 {Il n'y a  plus de menace Nd3 et c'était probablement meilleur de prendre maintenant en b5  }) 15... bxc4 16. bxc4 e6 $1 17. Nb4 O-O $17 18. Ne2 $6 {Les blancs ont déjà  un sérieux retard de développement et il vallait mieux éviter ce genre de  manoeuvre.} Qa5 $40 19. Nd3 Qa3 {Les noirs préfèrent garder les Q pour  profiter de la position exposée du K blanc mais ils gardaient aussi un net  avantage après l'échange des Q.} (19... Qxd2+ $142 20. Kxd2 Bc6 21. Nc3 f5 {la  paire de B est trés forte}) 20. Bd4 Bxd4 $6 {Les noirs se relachent et ils  laissent les blancs revenir dans la partie.} (20... e5) 21. Nxd4 Nf6 22. Nf2 d5  (22... e5 23. Nf3 Bc6) 23. e5 Nh5 24. Rc3 Qb4 25. Nd3 Qa4 26. g4 (26. O-O Rxc4  27. Rxc4 Qxc4 28. Nc1) (26. Nb2 $142 Qxa2 27. O-O) 26... Ng7 27. Nb3 $6 (27.  Nb2 Qxa2 28. O-O $15) 27... dxc4 28. Nbc5 $2 Qc6 $19 29. Nf2 Qxc5 30. Qxd7 Rfd8  31. Qa4 Rd4 0-1

Gain Noir

   [Event "AUS-ch"]  [Site "Sydney"]  [Date "1939.01.01"]  [Round "13.2"]  [White "Goldstein, Maurice Edwards"]  [Black "Watson, Charles Gilbert"]  [Result "0-1"]  [ECO "B73"]  [SetUp "1"]  [FEN "2r1r1k1/1p1b1p1p/p1q2bpB/8/2Pp1P2/1P6/P2Q1NPP/4RRK1 b - - 0 24"]  [PlyCount "33"]  [EventDate "1938.12.26"]  [EventType "tourn"]  [EventRounds "13"]  [EventCountry "AUS"]  [Source "ChessBase"]  [SourceDate "2005.11.24"]   24... b5 25. cxb5 axb5 26. Rc1 Qd5 27. Rxc8 Rxc8 28. Nd3 Bf5 29. Re1 Be4 30.  Qe2 Re8 31. Nf2 d3 32. Qxd3 Qxd3 33. Nxd3 Bd4+ 34. Nf2 f6 35. Rd1 Bc2 36. Rf1  Re2 37. f5 g5 38. h4 gxh4 39. Bf4 Bd3 40. Rd1 Bxf2+ 0-1

Gain Noir

   [Event "Buenos Aires ol (Men) prel-C"]  [Site "Buenos Aires"]  [Date "1939.08.28"]  [Round "5"]  [White "O'Hanlon, John"]  [Black "Cortlever, Nicolaas"]  [Result "0-1"]  [ECO "B74"]  [SetUp "1"]  [FEN "2r2rk1/1p3pbp/2q1b1p1/8/p1P2B2/1P1B3P/P1Q3P1/1R3RK1 b - - 0 23"]  [PlyCount "5"]  [EventDate "1939.08.24"]  [EventType "team"]  [EventRounds "7"]  [EventCountry "ARG"]  [Source "ChessBase"]  [SourceDate "1999.07.01"]  [WhiteTeam "Ireland"]  [BlackTeam "Netherlands"]  [WhiteTeamCountry "IRL"]  [BlackTeamCountry "NED"]   23... b5 24. Rbc1 a3 25. cxb5 Qb6+ 0-1

Gain Noir

   [Event "GER-ch 13th"]  [Site "Bad Pyrmont"]  [Date "1949.05.04"]  [Round "3"]  [White "Nonnenmacher, Albert"]  [Black "Herrmann, Hans"]  [Result "0-1"]  [ECO "B76"]  [SetUp "1"]  [FEN "2r2rk1/1p1qppbp/p2p1np1/3Pn3/2PN4/4BP2/PP1QB1PP/2R1K2R b K - 0 15"]  [PlyCount "18"]  [EventDate "1949.05.02"]  [EventType "swiss"]  [EventRounds "12"]  [EventCountry "GER"]  [Source "ChessBase"]  [SourceDate "2001.11.25"]   15... b5 16. b3 bxc4 17. bxc4 Qa4 18. Bd1 Qa3 19. Rc3 Qa5 20. Nb3 Qb4 21. a3  Qxa3 22. O-O Nxc4 23. Rxc4 Rxc4 24. Bd4 0-1

Gain Noir

   [Event "Helsinki ol (Men) prel-A"]  [Site "Helsinki"]  [Date "1952.??.??"]  [Round "1"]  [White "Barden, Leonhard William"]  [Black "Pilnik, Herman"]  [Result "0-1"]  [ECO "B73"]  [SetUp "1"]  [FEN "2q3k1/1p1b1nbp/p2pp1p1/8/2PNP3/1P2B2P/P2QN1P1/6K1 b - - 0 25"]  [PlyCount "77"]  [EventDate "1952.08.21"]  [EventType "team"]  [EventRounds "9"]  [EventCountry "FIN"]  [Source "ChessBase"]  [SourceDate "1999.07.01"]  [WhiteTeam "England"]  [BlackTeam "Argentina"]  [WhiteTeamCountry "ENG"]  [BlackTeamCountry "ARG"]   25... b5 26. cxb5 axb5 27. Qc2 Qb7 28. Kf2 Bf6 29. a4 bxa4 30. bxa4 Qb4 31. Nb5  Bxb5 32. axb5 Qxb5 33. Qc8+ Nd8 34. Qc7 Qc6 35. Qxc6 Nxc6 36. Bf4 Be7 37. Nc3  Nd8 38. Nb5 Nb7 39. g4 Kf7 40. Ke2 Ke8 41. Kf3 Kd7 42. Bg3 Nd8 43. Ke3 Nf7 44.  Nd4 Bf6 45. Nf3 Kc6 46. Kd3 d5 47. h4 e5 48. Nd2 Nd6 49. Bf2 d4 50. Bg3 Nb7 51.  Bf2 Kb5 52. Be1 Nc5+ 53. Kc2 d3+ 54. Kc3 Bd8 55. Nb3 Nxb3 56. Kxb3 Ba5 57. Bg3  d2 58. Kc2 Bc3 59. Bf2 Kc4 60. Be3 Ba5 61. Ba7 d1=Q+ 62. Kxd1 Kd3 63. Bb8 Bc3  0-1

Gain Noir

   [Event "URU-ch"]  [Site "Montevideo"]  [Date "1960.10.21"]  [Round "15"]  [White "Martin, Luis Jacinto"]  [Black "Elemberg, Norberto"]  [Result "0-1"]  [ECO "B70"]  [SetUp "1"]  [FEN "2r3k1/p3ppb1/5qpp/5b2/2Pr1B2/1PRp2P1/PK1Q1P1P/5B1R b - - 0 22"]  [PlyCount "5"]  [EventDate "1960.10.??"]  [EventType "tourn"]  [EventRounds "17"]  [EventCountry "URU"]  [Source "ChessBase"]  [SourceDate "2008.11.26"]   22... Rdxc4 23. bxc4 Rxc4 24. g4 Rxc3 0-1

Gain Noir

   [Event "OWL-ch"]  [Site "Buende"]  [Date "1963.??.??"]  [Round "3"]  [White "Detert, Heinz"]  [Black "Hantke, Rolf"]  [Result "0-1"]  [ECO "B72"]  [SetUp "1"]  [FEN "r1r3k1/1p2pp1p/3p2p1/3Pb3/pqP5/5B2/PPQ2PPP/1RR3K1 b - - 0 20"]  [PlyCount "81"]  [EventDate "1963.04.??"]  [EventType "tourn"]  [EventRounds "11"]  [EventCountry "GER"]  [Source "ChessBase"]  [SourceDate "2000.11.22"]   20... b5 21. b3 a3 22. Qd3 Bb2 23. Rc2 bxc4 24. bxc4 Rab8 25. Be2 Qc5 26. Bd1  Rb4 27. Kf1 Rxc4 28. Rxc4 Qxc4 29. Qxc4 Rxc4 30. Ke2 Kg7 31. Bb3 Rb4 32. Bc2  Kf6 33. Rd1 Bd4 34. Rb1 Bb2 35. Rd1 Ke5 36. Rd3 Re4+ 37. Re3 Rxe3+ 38. fxe3 f5  39. Bb3 Ke4 40. Kd2 Bf6 41. Ke2 Bg5 42. h3 Bxe3 43. Bc2+ Kd4 44. Kf3 Bd2 45.  Bb3 Ke5 46. Ke2 Bb4 47. Kd3 Bc5 48. Bc4 h5 49. Bb3 g5 50. Bc4 h4 51. Bb3 Kf4  52. Bc2 g4 53. Kc4 Ke5 54. Bd1 gxh3 55. gxh3 Be3 56. Bh5 Ke4 57. Bg6 Bd4 58.  Bf7 Ke5 59. Bg8 f4 60. Kd3 f3 0-1

Gain Noir