Author: Stan Arts
Date: 12:14:02 08/27/05
Go up one level in this thread
On August 27, 2005 at 14:55:29, Normand M. Blais wrote:
>Hi,
>
>Two versions of my program playing against each other produce the game below.
>The final position made me wonder. Why is Black resigning? The obvious answer is
>because I instructed the program to resign when the score is lower than a 1000
>points (value of the Queen). In fact, it is mate in 9 moves.
>
>N.B.
>
>My computer: Penthium 4 (3.0 GHz)
>O.S.: Windows 2000 Pro
>Ram: 512 Meg
>
>[Event "Computer chess game"]
>[Site "NORMAND"]
>[Date "2005.08.27"]
>[Round "5"]
>[White "Alex 1.67.01g"]
>[Black "Alex 1.67.00"]
>[Result "1-0"]
>[TimeControl "40/300"]
>
>1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e6 7. O-O Be7 8.
>f4 Qc7 9. Kh1 O-O 10. a4 Nc6 11. Be3 Re8 12. Bf3 Rb8 13. Qd2 Bd7 14. Nb3 b6
>15. Rad1 Red8 16. Qe2 Bc8 17. Nd2 d5 18. exd5 Nxd5 19. Bxd5 exd5 20. f5 Qa7
>21. Nb3 Bf6 22. Rxd5 Rf8 23. a5 Qe7 24. axb6 Bxc3 25. bxc3 Re8 26. Rf3 Rxb6
>27. f6 Qe4 28. Qd2 Bg4 29. Bxb6 Bxf3 30. Rg5 g6 31. gxf3 Qxf3+ 32. Rg2 Qxf6
>33. Rf2 Qe5 34. Nc5 Nb8 35. c4 f5 36. Qd5+ Kg7 37. Nd3 Qe7 38. Bd4+ Kh6 39.
>Ne5 Rf8 40. Bc5 Qe8 41. Qb7 Rf6 42. Be3+ f4 43. Ng4+ Kg5 44. Qd5+ Kh4 45.
>Rf3
>{Black resigns} 1-0
>
>[D]1n2q3/7p/p4rp1/3Q4/2P2pNk/4BR2/2P4P/7K b - - 5 45
Hi Normand
A nice kinghunt game.
Neurosis believes it to be a mate in 8 at most.
But we'll probably have to wait for Franz Huber or John Merlino to be
certain. :)
P4 2.4GHz, 64MB hash.
Legal moves: 30 Static score: -224
Ply Score Time Nodes Best move and expected line
------------------------------------------------------------
2 -28 1 711 Rf5 Nf6
3 -22 2 1018 Rf5 Ne5 Qxe5
4 -112 5 5312 Rf5 Rh3+ Kg5 Bxf4+ Kxf4 Qd4+ Qe4+ Qxe4+ Kxe4
5 -132 6 5897 Rf5 < - > Rh3+ Kg5 Bxf4+ Kxf4
5 -655 6 5924 Rf5 < - > Rh3+ Kg5 Bxf4+ Kxf4
5 -725 7 7449 Rf5 Rh3+ Kxh3 Qf3+ Kh4 Bf2+ Kg5 h4+ Kh5 Nf6+ Kh6
Nxe8
6 -725 15 18853 Rf5 Rh3+ Kxh3 Qf3+ Kh4 Bf2+ Kg5 h4+ Kh5 Nf6+ Kh6
Nxe8
7 -725 27 38940 Rf5 Rh3+ Kxh3 Qf3+ Kh4 Bf2+ Kg5 h4+ Kh5 Nf6+ Kh6
Nxe8
8 -794 40 59599 Rf5 < - > Rh3+ Kxh3 Qg2+ Kh4 Nf6 Rg5 Bf2+
8 -941 40 59648 Rf5 < - > Rh3+ Kxh3 Qg2+ Kh4 Nf6 Rg5 Bf2+
8 -1181 40 59956 Rf5 < - > Rh3+ Kg5 Bxf4+ Kxf4 Qd2+ Qe3 Nxe3
8 -1253 87 143613 Rf5 Rh3+ Kxh3 Qg2+ Kh4 Nf6 Rg5 Bf2+ Rg3 hxg3+ Kg5
Nxe8
9 -1346 161 265799 Rf5 < - > Rh3+ Kxh3 Qg2+ Kh4 Nf6 Rg5 Bf2+ Rg3
9 -31984 162 266674 Rf5 < - > Rh3+ Kxh3 Qg2+ Kh4 Nf6 Rg5 Qf2+ Kh3
9 -31984 251 437463 Rf5 <M8> Rh3+ Kxh3 Qg2+ Kh4 Nf6 Rg5 Qf2+ Kh3 Qf3+
Rg3 Qf1+ Rg2 Qxg2+ Kh4 Qg4+
10 -31984 1051 1764706 Rf5 <M8> Rh3+ Kxh3 Qg2+ Kh4 Nf6 Rg5 Qf2+ Kh3 Qf3+
Rg3 Qf1+ Rg2 Qxg2+ Kh4 Qg4+
11 -31984 1821 3334698 Rf5 <M8> Rh3+ Kxh3 Qg2+ Kh4 Nf6 Rg5 Qf2+ Kh3 Qf3+
Rg3 Qf1+ Rg2 Qxg2+ Kh4 Qg4+
12 -31984 3768 7276365 Rf5 <M8> Rh3+ Kxh3 Qg2+ Kh4 Nf6 Rg5 Qf2+ Kh3 Qf3+
Rg3 Qf1+ Rg2 Qxg2+ Kh4 Qg4+
13 -31984 9853 20300816 Rf5 <M8> Rh3+ Kxh3 Qg2+ Kh4 Nf6 Rg5 Qf2+ Kh3 Qf3+
Rg3 Qf1+ Rg2 Qxg2+ Kh4 Qg4+
14 -31984 26280 53786111 Rf5 <M8> Rh3+ Kxh3 Qg2+ Kh4 Nf6 Rg5 Qf2+ Kh3 Qf3+
Rg3 Qf1+ Rg2 Qxg2+ Kh4 Qg4+
Total nodes:103345074 n/sec:217600 (q-nodes:1% max depth:29)
Regards and goodluck with Alex
Stan
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