Author: Manfred Rosenboom
Date: 23:20:42 01/29/98
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>I know that some positions require underpromoting a pawn to a knight, >but are there any that win with an underpromote to a bishop or rook? > >I'd like to limit the move generator to just queen and knight >promotions. You will find underpromotion mostly in endgame studies. Nevertheless this also occures (very rarely) in real OTB game. Here are two example games: [Event "Vinkovci"] [Site "Vinkovci"] [Date "1989.??.??"] [Round "?"] [White "Apicella, Manuel"] [Black "Bellia, Fabrizio"] [Result "0-1"] [ECO "C92"] 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3 O-O 9. h3 Nd7 10. d4 Bf6 11. a3 Bb7 12. Qd3 exd4 13. cxd4 Nxd4 14. Nxd4 Nc5 15. Qg3 Bxd4 16. Bc2 Re8 17. Nd2 Qf6 18. Rb1 Be5 19. Qf3 d5 20. b4 Nxe4 21. Nxe4 dxe4 22. Qg4 Qg6 23. Qh4 f5 24. Be3 Bd5 25. Rbd1 c6 26. g3 h6 27. Bd4 Bxd4 28. Rxd4 a5 29. a4 axb4 30. axb5 b3 31. Bb1 Bf7 32. bxc6 Qxc6 33. Qf4 Qf6 34. Rd7 Red8 35. Rb7 Ra6 36. g4 Rad6 37. Kh2 fxg4 38. Qxf6 Rxf6 39. Bxe4 Rxf2+ 40. Kg3 Rfd2 41. hxg4 R2d7 42. Rb6 Re8 43. Bf5 Rxe1 44. Bxd7 g6 45. Kf4 Kg7 46. Bc8 Rc1 47. Ba6 Rc7 48. Bd3 Rc3 49. Be4 Rc7 50. Bf3 Re7 51. Bd1 Re1 52. Bf3 Re6 53. Rb7 Rf6+ 54. Ke4 g5 55. Bd1 Kg6 56. Ke3 Ra6 57. Be2 Rd6 58. Bd3+ Kf6 59. Bf5 h5 60. Rb5 h4 61. Be4 Be6 62. Bf5 Bd5 63. Be4 Bxe4 64. Kxe4 Ra6 65. Rxb3 Ra4+ 66. Kf3 Rf4+ 67. Kg2 Rxg4+ 68. Kh3 Ra4 69. Rb8 Ra3+ 70. Kh2 Kf5 71. Rb4 h3 72. Rc4 g4 73. Rc2 Kf4 74. Rf2+ Kg5 75. Rb2 Kh4 76. Rb4 Ra2+ 77. Kg1 Rg2+ 78. Kh1 Re2 79. Kg1 Kg3 80. Rb3+ Kf4 81. Rb8 Kf3 82. Rf8+ Kg3 83. Rf1 Ra2 84. Kh1 Ra4 85. Rb1 Kh4 86. Rc1 g3 87. Rb1 Rf4 88. Ra1 g2+ 89. Kh2 Rf1 90. Rxf1 gxf1=B 0-1 [Event "World op"] [Site "Philadelphia"] [Date "1992.??.??"] [Round "7"] [White "Kreiman, Boris"] [Black "Salman, Joel"] [Result "1-0"] [ECO "B33"] 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Bxf6 gxf6 10. Nd5 Bg7 11. c3 f5 12. exf5 Bxf5 13. Nc2 Be6 14. Nce3 O-O 15. Bd3 f5 16. Qh5 e4 17. Bc2 Ne7 18. Bb3 Ra7 19. Nxe7+ Qxe7 20. Nxf5 Qf6 21. Bxe6+ Qxe6 22. Nxg7 Rxg7 23. O-O Rf5 24. Qh3 Qe5 25. g3 Rgf7 26. Rae1 b4 27. Qg4+ Rg5 28. Qxe4 Qxe4 29. Rxe4 bxc3 30. bxc3 Rc5 31. Rd4 Rxc3 32. Rxd6 a5 33. Rfd1 Rc2 34. R1d2 Rfc7 35. Kg2 a4 36. h4 h5 37. R6d5 R7c5 38. Rxh5 Rxd2 39. Rxc5 Rxa2 40. Rc7 Rb2 41. Ra7 Rb4 42. f3 Rb2+ 43. Kh3 Rb3 44. Rxa4 Rxf3 45. Ra7 Rb3 46. h5 Kh8 47. Kh4 Rc3 48. g4 Rb3 49. Re7 Rb5 50. h6 Rb6 51. Kh5 Ra6 52. g5 Rb6 53. Rf7 Kg8 54. Rg7+ Kh8 55. Rc7 Rb8 56. Re7 Ra8 57. g6 Rb8 58. Kg5 Ra8 59. Rf7 Ra5+ 60. Rf5 Ra8 61. g7+ Kh7 62. Rf8 Rxf8 63. gxf8=B 1-0
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