Computer Chess Club Archives


Search

Terms

Messages

Subject: Hashtable collisions perhaps? Take a look...

Author: Aaron Gordon

Date: 16:37:12 12/29/01


Here is the PGN of a game I played on FICS just a moment ago... well, I don't
think I've ever seen this happen before. :) Is this massive blunder due to
hashtable collisions perhaps? Any opinions are welcome.. I'm definately no
expert.

Time control was 1+1. The opponent was Gandalf 5. I have no idea what speed of
CPU it was running on. I was using Chesstiger 14, 192mb hash, 1.8GHz AthlonXP.
Here's the PGN..

[Event "FICS unrated lightning game"]
[Site "fics, Fremont, California USA"]
[Date "2001.12.29"]
[Time "16:05:05"]
[Round "-"]
[White "cptesterx"]
[Black "LittleGoliath"]
[WhiteElo "0"]
[BlackElo "2827"]
[TimeControl "60+1"]
[Mode "ICS"]
[Result "1-0"]

1. c4 Nf6 2. Nc3 e6 3. Nf3 Bb4 4. Qc2 O-O 5. g3 b6 6. Bg2 Bb7 7. O-O d5
8. cxd5 Nxd5 9. Nxd5 exd5 10. d4 Bd6 11. Ng5 g6 12. Qb3 c6 13. Re1 a5 14. Bd2
a4 15. Qf3 h6 16. Nh3 g5 17. Qh5 Kg7 18. e4 a3 19. Bxg5 hxg5 20. Nxg5 Rh8
21. Qxf7+ Kh6 22. Qxb7 Qxg5 23. exd5 Qf5 24. Re6+ Qxe6 25. dxe6 axb2 26. Rb1
Ra4 27. Bf3 Rxd4 28. Qf7 Rf8 29. Qh5+ Kg7 30. Qg5+ Kh7 31. e7 Bxe7 32. Qxe7+
Kg8 33. Qe6+ Rf7 34. Bh5 Rd7 35. Rxb2 Re7 36. Bxf7+ Kf8 37. Qh6+ Kxf7 38. Rxb6
Nd7 39. Rxc6 Nf8
Black resigns} 1-0

After this it's all down hill...

[D]rn1q1rk1/1b3p2/1ppb3p/3p2pQ/p2P4/6PN/PP1BPPBP/R3R1K1 b - - 0 17

Move played was 17...Kg7
Here's the PV of CT14 starting analysis from this position

00:00:00.1	-0.24	8	143543	Qf6 e4 dxe4 Bxe4 Re8 Bc3 a3 d5 Be5 dxc6 axb2 cxb7
bxa1Q bxa8Q Qxc3
00:00:00.2	-0.08	9	290519	Qf6 e4 dxe4 Bxe4 Re8 Bc3 a3 d5 Be5 dxc6 axb2 cxb7
bxa1Q bxa8Q Qxc3
00:00:01.3	-0.34	10	570630	Qf6 e4 dxe4 Bxe4 Qg7 Bc3 f6 a3 Ba6 Bc2 Bc4
00:00:03.6	-0.28	11	1189851	Qf6 e4 dxe4 Bxe4 Qg7 Bc3 f6 a3 Ba6 d5 c5 Bg6
00:00:08.2	-0.30	12	2731903	Qf6 e4 dxe4 Bxe4 Qg7 Bc3 f6 a3 g4 Nf4 Qg5 Qg6+ Qxg6
Bxg6 Nd7
00:00:16.4	-0.30	13	5713466	Qf6 e4 dxe4 Bxe4 Qg7 Bc3 f6 Bg6 Bc8 f4 a3 b3 Bxh3
Qxh3 Bxf4
00:00:30.4	-0.40	14	11221234	Qf6 e4 dxe4 Bxe4 Qg7 Bc3 f6 Bf5 a3 b3 Bc8 Bxc8 Rxc8
Re6 Rd8 Rae1
00:01:07.8	-0.40	15	25691190	Qf6 e4 dxe4 Bxe4 Qg7

Any idea's on what might have caused this?



This page took 0 seconds to execute

Last modified: Thu, 15 Apr 21 08:11:13 -0700

Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.