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Subject: Re: How long does it take your program to find Nf6! in this position?

Author: Mogens Larsen

Date: 10:47:35 10/23/01

Go up one level in this thread


On October 23, 2001 at 13:12:38, Andrew Williams wrote:

>Hi,
>
>My program lost this game against a crafty clone on ICC recently:
>
>[Event "ICS rated blitz match"]
>[Site "204.178.125.65"]
>[Date "2001.10.21"]
>[Round "-"]
>[White "MoonShot"]
>[Black "PostModernist"]
>[Result "1-0"]
>[WhiteElo "2859"]
>[BlackElo "2772"]
>[TimeControl "600+2"]
>
>1. d4 Nf6 2. c4 c6 3. Nc3 e6 4. e4 Bb4 5. Bd3 d5 6. e5 dxc4 7. Bxc4 Nd5 8.
>Ne2 b6 9. O-O O-O 10. Qd3 Be7 11. Bd2 Bb7 12. Qg3 Kh8 13. Ne4 Ba6 14. Rac1
>Bxc4 15. Rxc4 Qd7 16. Bg5 Na6 17. Bxe7 Nxe7 18. Nd6 Nc7 19. Rfc1 Rad8 20.
>Qf3 Ne8 21. Ne4 Kg8 22. Qh3 a5 23. a4 Nc7 24. Qg4 Kh8 25. Qh5 Kg8 26. R1c3
>Qd5 27. Nf6+ gxf6 28. Rg3+ Kh8 29. Qh6 Ng6 30. Rh3
>{PostModernist resigns} 1-0
>
>
>The move 27.Nf6+ wins everything immediately. MoonShot (crafty 18.12
>on  a K7 1.33GHz) found that in 14 seconds (albeit with hash-tables
>already full). With some fiddling about with null move rules, PM can
>find it in 37 seconds from a "standing start" (K7 1.2GHz). I'd be
>interested to know how other programs do on this.
>
>[D]3r1rk1/2n1nppp/1pp1p3/p2qP2Q/P1RPN3/2R5/1P2NPPP/6K1 w - - bm Nf6

Gandalf 5.0 needs 16 seconds on a P3-866MHz.

00:00:00.8	0,52	5	24405	Ng5 h6 Nf4 Qd7 Rh3
00:00:00.8	0,54	5	98839	N2g3
00:00:00.3	0,60	5	129102	N2g3 c5 dxc5 Qd1+ Qxd1 Rxd1+ Nf1 Ncd5 Rf3
00:00:01.8	0,62	6	261000	N2g3 h6 Rc1 b5 axb5 Qxb5 R1c2
00:00:03.1	0,48	7	934360	N2g3 Ne8 Rc1 f5 Ng5 h6 Nf3
00:00:06.8	0,49	7	1793990	f3
00:00:07.5	0,51	7	2063565	f3 Qd7 Rc1 h6 Nd6 Ne8 Ne4
00:00:09.8	0,36	8	2637324	f3 Qd7 Rc1 h6 Nd6 Ne8 Ne4 f5
00:00:16.3	0,38	8	4735463	Nf6+
00:00:16.0	0,89	8	4750623	Nf6+
00:00:16.8	1,26	8	4769658	Nf6+
00:00:16.1	2,00	8	4787920	Nf6+
00:00:16.6	3,47	8	4823125	Nf6+
00:00:17.6	6,41	8	4856096	Nf6+
00:00:18.3	12,22	8	5173126	Nf6+ gxf6 Rg3+ Kh8 Qh6 Ng6 Rh3 Qxg2+ Kxg2 Nh4+ Rxh4
Rg8+ Kh1 Rg7 Qxf6

Regards,
Mogens



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