Author: Gerd Isenberg
Date: 13:12:37 03/31/04
Go up one level in this thread
On March 31, 2004 at 14:49:37, Slater Wold wrote: >On March 31, 2004 at 12:49:04, Gerd Isenberg wrote: > >>On March 31, 2004 at 06:31:28, Tord Romstad wrote: >> >>>I just completed a 100-game blitz match between Gothmog 0.4.7 and Crafty 19.9 >>>(yes, I know it is not the most recent version). In one of the games, the >>>following position arised: >>> >>>[D]r2qr3/4bpkp/p2p2pN/1p1P4/2pNP3/1b5P/1P1Q1PP1/R3R1K1 w - - >>> >>>Here, Gothmog surprised me (and Crafty) by playing the knight sac Nxf7!?. It >>>plays this after only 7 plies and 1 second, almost certainly as a speculative >>>sac, but still keeps it with a +1 score after 20 minutes and 16 plies. In >>>the game, Gothmog quickly got a winning attack after 24. Nxf7 Kxf7 25. Ne6 Qc8 >>>26. Qh6 Bf8 27. Qxh7+ Kf6 28. Re3. >>> >>>Which other engines like Nxf7? Is the sac correct? >> >>IsiChess MMX (Athlon XP2.7+ 256 MB Hash) likes Nxf7 too, after 7 seconds with >>slight minus then draw score. 40 seconds to get the first plus (+0.17). >>After two minutes +0.54: >> >>1.Nxf7 Kxf7 2.Ne6 Qb6 3.Qh6 Rc8 4.Qxh7+ Ke8 5.Qxg6+ Kd7 6.Qf5 Rg8 7.e5 Ke8 > >So...when can I expect a nice, Gerd optimized, 64-bit IsiChess? :) It's not only about porting mmx- inline assembly to wrapped intrinsics or gcc-assembler. It's a complete new bitboard infrastructure and movegeneration. And a complete new eval, porting most king safety (mate detection) ideas, but implemeting things completely different and more efficient with respect to new data structures. With the good news from Eugene about future ms compiler i'm a bit more optimistic now. But my time is soo limited :-( So i really don't know - one, two or more years... Cheers, Gerd
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.