Author: Terry Ripple
Date: 03:06:10 05/25/02
Go up one level in this thread
On May 25, 2002 at 02:11:42, Timothy J. Frohlick wrote:
>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
>----------
I think when the White King moves to g3, then black should check on g6 and
capture white's pawn on f6. It won't matter if black loses his Bishop as he will
capture white's Bishop when he tries to stop the a-pawn from Queening! Then the
Queen should do a series of moves to then advance his Queen rook pawn at the
proper moment so that white can't take the pawn or he will lose his Bishop. And
then black will continue to advance his a-pawn for a Queen and the only way
White will stop it will to give up his bishop. Now black will have a won
endgame!
regards,
Terry
>
>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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