A00 Irregular Openings (1.b4 e5 2.b5 d5 3.Bb2)

[Event "Rated game, 15m + 0s"] [Site "Main Playing Hall"] [Date "2008.03.12"] [Round "?"] [White "Condansator4"] [Black "Vierjoki, Timo"] [Result "1/2-1/2"] [ECO "A00"] [WhiteElo "1755"] [BlackElo "1824"] [Annotator "Tactical Analysis 2.10 (30s)"] [PlyCount "139"] [EventDate "2008.03.04"] [SourceTitle "playchess.com"] 1. b4 e5 2. b5 d5 3. Bb2 {A00 Irregular Openings} Bd6 4. Nf3 Qe7 5. a4 Nf6 6. e3 O-O {-0.19/26} (6... e4 $15 {-0.64/22} 7. Nd4 c5) 7. Be2 {-0.90/23} (7. d3 $11 {-0.19/26}) 7... c6 {0.00/25} ({Black should play} 7... e4 $17 {-0.90/23} 8. Nd4 c5) 8. c4 {-0.87/28} (8. d4 $11 {0.00/25}) 8... Be6 $146 {0.91/24} (8... dxc4 $17 {-0.87/28} 9. Na3 e4) (8... Re8 9. Nc3 e4 10. Nd4 c5 11. Nb3 Be6 12. cxd5 Bxd5 13. Nxd5 Nxd5 14. Qc1 Nd7 15. Na5 Rab8 16. g3 Be5 17. Nc4 Nb4 18. Nxe5 Nxe5 19. O-O Rbd8 20. Ba3 Nbd3 21. Qc3 Qe6 22. Kg2 Rd5 23. Rad1 {Leon Manas,J (1712)-Sanchez Montesdeoca,I (1710) Galdar 2010 0-1}) (8... Bg4 9. O-O Nbd7 10. Na3 e4 11. Nd4 Qe5 {0-1 (11) Emunds,H-Stoeckmann,H (2220) Münster 1989 }) 9. cxd5 {0.08/27} (9. Nxe5 $16 {0.91/24} Bxe5 10. Bxe5) 9... Bxd5 $11 10. O-O {0.00/30} (10. Nc3 $14 {0.42/22}) 10... e4 11. Bxf6 {-0.71/26} (11. Ne1 $11 {0.00/30}) 11... Qxf6 $17 12. Nd4 Be5 $36 {White is under pressure.} 13. Nc3 Bxd4 14. exd4 Qxd4 15. Rc1 {-1.04/24} (15. Nxd5 $15 {-0.56/29 feels stronger.} cxd5 16. d3) 15... Be6 {0.00/28} (15... Nd7 $17 {-1.04/24} 16. Qc2 Rfe8) 16. Re1 {-1.00/27} (16. Qc2 $1 $11 {0.00/28}) 16... f5 {0.23/30} ({Black should try } 16... Nd7 $17 {-1.00/27} 17. Qc2 Nc5 18. bxc6 bxc6) 17. Qc2 {-0.28/23} (17. d3 $142 {0.23/30}) 17... Rd8 18. Red1 {-1.12/22} (18. Bf1 $11 {-0.05/33}) 18... Qf6 {-0.16/29} (18... Nd7 $17 {-1.12/22 And now ...Nc5 would win.} 19. bxc6 bxc6) 19. d3 $11 exd3 20. Bxd3 cxb5 (20... Nd7 {feels hotter.} 21. bxc6 bxc6 22. Ne2 Ne5 23. Nf4 Bf7) 21. Nxb5 Na6 22. Bc4 (22. Bf1 {is more complex.} Nb4 23. Qc7 a6 24. Nd6 Na2 25. Rc5) 22... Rxd1+ 23. Rxd1 Bxc4 24. Qxc4+ Qf7 $1 25. Qxf7+ Kxf7 {Endgame KRN-KRN} 26. Nd6+ Kf6 27. Nxb7 {Threatens to win with Rd6+. } Nb4 28. Rd4 Nc2 (28... Rc8 {keeps more tension.} 29. g3 Rc1+ 30. Kg2 Nc2 31. Rd6+ Ke7) 29. Rc4 Rb8 (29... Re8 {looks sharper.} 30. h4 Na3 31. Rc6+ Re6 32. Rc3 Nb1) 30. Rc7 Nb4 31. g3 Nd5 32. Rc6+ Ke7 33. Nc5 {-0.68/28} (33. Rc5 $11 { 0.08/38}) 33... Rb6 $15 34. Rc8 Kd6 {0.00/39} (34... Rb1+ $1 $17 {-0.77/26} 35. Kg2 Rc1) 35. Nd3 $11 {Black must now prevent Rd8+.} Ra6 $2 {2.23/28} (35... Rb7 $11 {0.00/39 and Black has nothing to worry.}) 36. Nb2 $2 {0.00/30} ({White has to play} 36. Rd8+ $18 {2.23/28} Kc6 37. Rxd5 $1 Kxd5 38. Nb4+ Kc4 39. Nxa6) 36... Nb6 37. Nc4+ Nxc4 38. Rxc4 {KR-KR} Kd5 39. Rb4 Rb6 40. Rf4 g6 41. Kg2 { -1.05/30 [#]} (41. g4 $11 {-0.08/36 remains equal.}) 41... a5 $1 $17 42. h4 $2 {-5.23/30} (42. h3 $17 {-1.00/34 is more resistant.}) 42... Rb4 $19 43. Rf3 Rxa4 44. Rb3 Rb4 45. Ra3 {-7.42/26} (45. Rc3 $142 {-4.25/32}) 45... a4 46. Rd3+ Ke6 47. Ra3 {-7.34/35} (47. Rd8 $142 {-4.20/37} Ke5 48. Kf3) 47... Kd6 48. Rd3+ Kc6 49. Rc3+ Kb6 50. Re3 Ka6 51. Re7 Rb7 52. Re3 Ka5 53. Kf3 Kb4 {-13.62/29} ( 53... Rb3 $142 {-132.58/25} 54. g4 Rxe3+ 55. fxe3 a3 56. gxf5 gxf5) 54. Kf4 a3 55. Re1 a2 56. f3 Ra7 {Black mates.} 57. g4 a1=Q 58. Rxa1 Rxa1 59. gxf5 gxf5 60. Kxf5 {KR-KPP} Rf1 61. f4 Kc5 62. Kg5 Kd5 63. h5 Ke4 64. Kh6 Rxf4 65. Kxh7 { KR-KP} Kf5 66. h6 Kg5 67. Kg7 Ra4 68. h7 Ra7+ 69. Kg8 Ra8+ 70. Kg7 {Accuracy: White = 17%, Black = 33%. . An unexpected result.} 1/2-1/2