Author: Uri Blass
Date: 01:12:23 08/18/03
Go up one level in this thread
On August 18, 2003 at 03:55:15, Andreas Stabel wrote: >On August 15, 2003 at 15:56:50, Alastair Scott wrote: > >>On August 14, 2003 at 23:18:39, Omid David Tabibi wrote: >> >>>How about 128? :) Is there any position from an actual game in which there were >>>more than 128 moves?! (I remember a game in which Alekhine had three queens and >>>his opponent two queens, so the legal moves might have been above 128) >> >>It's a fake (Alekhine-Grigoriev): >> >>http://www.xs4all.nl/~timkr/chess/al5qtxt.htm >> >>Another Tim Krabbe investigation has shown that the maximum number of legal >>moves for one side in a position occuring in actual play - at least a position >>found so far - is 75. That intuitively seems rather low, but it would be >>interesting to try to come up with an upper bound for a 'sensible' position >>(with no gross material imbalance, for example; opposite pieces in the way would >>limit the number of legal moves). >> >>http://www.xs4all.nl/~timkr/chess2/diary.htm (item 212). >> >>Alastair > >I've made a program that scans PGN files and gives a lot of statistics. >This is one of them. I scanned what was called the Granit collection, and >there the following game has 92 possible moves for black at move 53. > >[Event "?"] >[Site "VOGChess"] >[Date "????.??.??"] >[Round "?"] >[White "Jeane"] >[Black "Glass-Man"] >[Result "1/2-1/2"] >[ECO "B00"] >[Opening "King's pawn opening"] >[Termination "normal"] >[Mode "VOG"] >[PlyCount "123"] > >1. e4 d6 2. Bd3 Nc6 3. Nf3 Be6 4. O-O Nf6 5. c4 Bg4 6. Qe2 Bh5 7. b3 e5 8. >a4 Be7 9. Nc3 Nb4 10. Bb1 c5 11. Nb5 Nd7 12. Qd3 Nxd3 13. Bxd3 Qa5 14. Bc2 >O-O 15. d3 Nb6 16. Be3 a6 17. Nc7 Rac8 18. h3 Rxc7 19. Ng5 Be2 20. Rae1 f6 >21. Ne6 Bxf1 22. Rxf1 Rfc8 23. h4 Qc3 24. Rc1 Rd7 25. Bd1 Qxd3 26. a5 Qxe4 >27. h5 d5 28. cxd5 Nxd5 29. Rc4 Qd3 30. Bxc5 Qxd1+ 31. Kh2 Qxb3 32. Rg4 Qb5 >33. Rxg7+ Kh8 34. Bxe7 Qxa5 35. Bxf6 Qb6 36. h6 Qxe6 37. Rf7+ Nxf6 38. Rxf6 >Qxf6 39. f3 b5 40. Kh3 b4 41. Kg4 b3 42. Kh5 b2 43. Kg4 b1=Q 44. f4 e4 45. >Kg3 e3 46. Kg4 e2 47. Kf3 e1=Q 48. Kg4 a5 49. Kf3 a4 50. Kg4 a3 51. Kf3 a2 >52. Kg4 a1=Q 53. Kf3 Qh1 54. Kf2 Qb8 55. Ke2 Qba8 56. Ke3 Qf8 57. Ke2 Kg8 >58. Kf2 Qff6 59. f5 Qh8 60. Ke3 Rc4 61. Kf2 Rd8 62. Ke3 1/2-1/2 > >Fen position: >[D]2r4k/3r3p/5q1P/8/5P2/5K2/6P1/qq2q3 b - - 0 53 > >Best regards >Andreas Stabel It is not a 'sensible' position(with no gross material imbalance) Maybe you should try to add the condition that the advantage of the stronger side is not more than 2 pawns. Uri
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