Author: Eelco de Groot
Date: 13:51:50 10/04/04
[Event "Wch-Comp-11 Maastricht"] [Site "Maastricht"] [Date "19/8/2001"] [Round "2"] [White "Ferret 2xAMD 1.2"] [Black "Gandalf 5.0"] [Result "1-0"] 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 Bb7 10. d4 Re8 11. Nbd2 Bf8 12. a4 h6 13. Bc2 exd4 14. cxd4 Nb4 15. Bb1 g6 16. Ra3 Bg7 17. Nh2 c5 18. d5 Nd7 19. Ndf3 h5 20. Nf1 bxa4 21. Qxa4 a5 22. Ne3 Ba6 23. Qd1 c4 24. Nd2 Ne5 25. Rf1 Qb6 26. Kh2 c3 27. bxc3 Bxf1 28. Qxf1 Na6 29. Rb3 Qc7 30. c4 Nb4 31. Qd1 Nd7 32. Nef1 Nc5 33. Rf3 a4 34. Kg1 Reb8 35. Rg3 Qe7 36. Ba3 Be5 37. Re3 Bf4 38. Rf3 Qe5 39. h4 Bh6 40. Ne3 Nb3 41. Ndf1 Bxe3 42. Nxe3 Qa1 [D]rr4k1/5p2/3p2p1/3P3p/pnP1P2P/Bn2NR2/5PP1/qB1Q2K1 w - - 1 1 43. e5 Qxa3 [D]rr4k1/5p2/3p2p1/3PP2p/pnP4P/qn2NR2/5PP1/1B1Q2K1 w - - 0 1 44. Rxf7 Kxf7 45. Qf3+ Kg8 46. Qf6 Qa1 47. Qe6+ Kf8 48. Qxd6+ Ke8 49. Qxg6+ Kd8 50. d6 Kc8 51. Qf7 Qxb1+ 52. Kh2 Na6 53. e6 Nbc5 54. e7 Qe4 55. d7+ Nxd7 56. e8Q+ Qxe8 57. Qxe8+ Kc7 58. Nd5+ Kc6 59. Qe6+ Kc5 60. Qxd7 a3 61. Qf5 Kxc4 62. Ne3+ Kc3 63. Qc2+ Kb4 64. Qc4+ Ka5 65. Qc3+ Kb5 66. Qb3+ Kc6 67. Qa4+ Kb6 68. Qxa3 Rh8 69. Qd6+ Kb5 70. Qe5+ Nc5 71. Qb2+ Kc6 72. Qf6+ Kb5 73. Nd5 Rhc8 74. Qb2+ Kc6 75. Ne7+ 1-0 Hello, I am curious if there are programs that can find Ferret's 43.e5! in the first diagram, in reasonable time? You probably have to have some sort of singular extensions to play 43.e5! even if then you then don't see 44.Rxf7 yet. Rebel 12 could find e5 with its singular extensions enabled, but the searchtree in Rebel 12 would often grow out of control at ply>12 . Programs with singular extensions, like Bruce Moreland's Ferret have the advantage here, but is it findable with other extensions? My own current settings for Pro Deo do play 44.Rxf7! but only after 16 minutes, lots of nondefault extensions [Pruning = MISC_30]* extend singular checks , [Extensions (remaining)= 15] -not sure this last one is right as I remember these remaining Rebel extensions were bitsettings, not normal settings?- and big minusscore on my Celeron 500MHz, 43.e4-e5 I can't get yet. (43.Ba3xb4 and 43.Ne3-f5 are other choices but I'm afraid these only lead to a lost game). Pro Deo 1.0 at move 44, custom settings: 00:16:44.8 -3,52 12 162748792 Rxf7 Kxf7 Qf3+ Kg8 Qe4 Qc1+ Kh2 Qxb1 Qxb1 00:16:44 12.15 -3.52 44.Rxf7 Kxf7 45.Qf3 Kg8 46.Qe4 Qc1 47.Kh2 Qxb1 48.Qxb1 Is Ferret the only one to find the winning continuation quickly ? Regards, Eelco
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