Author: Timothy J. Frohlick
Date: 23:11:42 05/24/02
Go up one level in this thread
Good Game by Crafty 18.15 but it is a draw. Unless black can promote that
distant queen-side pawn it is a draw by perpetual check.
Tim
On May 25, 2002 at 00:18:53, Mike Byrne wrote:
>The first game of the Frank J. Byrne Memorial Computer Chess Challenge pitting
>the world's best freely available commercial computer chess program -- Chess
>Tiger v14 by Christophe Theron against the world's best freely available
>non-commercial computer chess program - Crafty v18.15 by Robert Hyatt, is now
>underway. Like the days of yore, it is the first program to win 10 games and
>the program must
>have a margin of victory of 2 games. A winning score could be 10-8 or 21-19 it
>all depends on how the games go. Draws do not count - it just wins that count.
>
>For futher backgorund information on this match, please see this link.
>
>http://www.talkchess.com/forums/1/message.html?231517
>
>After a slow start by the underdog Crafty v18.15, it has come on strong in the
>second half the first time control and now holds the advantage as the game
>enters into the second time control. Chess Tiger is now fighting for a draw to
>avoid the loss.
>
>The moves thus far:
>
>[Event "Frank J. Byrne Memorial Computer Chess Challenge"]
>[Site "Philadelphia, PA"]
>[Date "2002.05.24"]
>[Round "1"]
>[White "Chess Tiger v14"]
>[Black "Crafty v18.15"]
>[Result "*"]
>
>1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. O-O exd4 8.
>Nxd4 Re8 9. f3 c6 10. Kh1 Nbd7 11. Nc2 Nb6 12. Bg5 h6 13. Bh4 Be6 14. Ne3
>g5 15. Bf2
>{
>last move in book
>}
>15... d5
>{
>Crafty didn't switch to this move until nearly the end of search - after
>200,000,000 nodes -
>
>it was looking at the weaker Nh5 up until that point
>}
>16. cxd5 cxd5 17. Nf5 Bxf5
>{
>For these first several moves out of book, Crafty was going about 12 ply, Tiger
>about 15 ply.
>}
>18. exf5 Nc4 19. Bxc4 dxc4 20. Qa4 Nd5 21. Ne4 Qc7 22. Rac1 Rec8 23. b3 c3
>{
>At this point, both programs favor white at a plus .3-.4. Crafty is hitting 13
>ply, Tiger 15
>
>ply.
>}
>24. f6 Bf8 25. Rfd1 Rd8 26. Rd4 Qf4
>{
>Although Tiger predicted this move, it was still showing as +.32. Meanwhile,
>Crafty showed
>
>a +1.32 gain on this move. This kind of a disconnect in the scores usually mean
>one side is
>
>right and one side is wrong - but who? Tiger went into a long think after this
>move - 17 ply
>
>and returned a score that showed it too believe black is now winning -.74
>}
>27. Rc2 Ne3 28. Rxc3 Nd1 29. Rcd3 b5 30. Rxd1
>{
>Now we know - the queen is history - 19 ply by Tiger on this move. b5 was
>played after 13
>
>ply by Crafty. Carft was showing this move in its analysis on move 28. Tiger
>did not
>
>predict this move.
>}
>30... bxa4 31. Rxd8 Rxd8 32. Rxd8 g4 33. Bc5 Qc1+ 34. Bg1 gxf3 35. gxf3
>axb3 36. axb3 Qf1 37. Nd2 Qd1 38. b4 a6 39. h3 Qa1 40. Ra8 Qc3
>{
>First time control met - Tiger with a few extra minutes, Crafty with 25 minutes.
> Tiger is
>
>now going to about 19 ply - Fitter is hitting 17 ply. Fitter shows +2.67, Tiger
>-1.10
>}
>41. Bc5 Qc1+ 42. Kh2 Qxd2+
>{
>Fiiter +2.73 l Tiger -1.20 - things are not looking well for Tiger.
>}
>*
>
>The position after 42. ...Qxd2+
>
>
>[D] R4bk1/5p2/p4P1p/2B5/1P6/5P1P/3q3K/8 w
>
>
>Yours truly in chess,
>
>Mike Byrne
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