Author: Ed Schröder
Date: 02:01:39 03/05/02
Go up one level in this thread
On March 04, 2002 at 21:17:41, Albert Silver wrote: >On March 04, 2002 at 18:16:12, Ed Schröder wrote: > >>On March 04, 2002 at 17:43:29, Albert Silver wrote: >> >>>The following position occurred in Spassky-Beliavsky, Reykjavik, 1988 >>> >>>[D]2b1qrk1/5p1p/pBn3p1/1p2p3/4P2N/bBP1Q3/P4PPP/3R2K1 w - - >>> >>>Spassky found a tremendous move 25.Nxg6!! and won the game. I don't think any >>>engines will have much luck with it but feel free to try it. I've analyzed it in >>>detail and can verify that it is the strongest move and correct, so as a further >>>challenge, see if you can find the *strongest* continuation after the possible >>>defense: 25...hxg6 26.Qh6 Be6!? >>> >>> Albert >> >> >>It's dangerous to make such strong statements :-) >> >>Rebel Century 4 [WB] -> 18 seconds. >> >>Ed > >Fantastic result, Ed! As Slater pointed out (saving me face just a tad :-) ) I expected a more humble statement :-)) >other engines aren't quite as successful. The defensive move Bc1 is interesting >too, and the only move I had analyzed was f5. In a sense Bc1 is possibly the >most efficient defense as it doesn't allow the mega (losing) complications that >ensue after f5. The Bc1! defense is so typical for computers, if there is one little small hole in the giant chess tree of the millions of positions, computers will find it as in this case. It's what it makes it so hard for a human to beat the beast. As in the 2 games van Wely won, he was not able to decide the game in the king attack and was forced to go to the ending. >It's a position that's great fun to analyze oneself (if you have >the courage) which is why I threw down the gauntlet that way. BTW, >Rh3 isn't the >strongest follow-up to f5. ;-) Always something to complain huh? :) Ed > Albert > >> >>==================================================== >> >>00:00:05.6 0,91 10 2582458 Qh6 Be6 Rd3 Qe7 Nf5 Qf6 Rf3 Re8 >>00:00:14.1 1,05 11 9000514 Qh6 Qe7 Nf3 Qf6 Bd5 Ne7 Bc7 Qg7 >>00:00:18.8 1,05 11 12160729 Nxg6 >>00:00:19.1 1,54 11 12844551 Nxg6 hxg6 Qh6 Be6 Rd3 Bc1 Qxc1 Bc4 >>00:00:21.5 1,44 12 14090708 Nxg6 hxg6 Qh6 Be6 Rd3 f5 Rh3 >>00:00:31.6 1,44 13 22011373 Nxg6 hxg6 Qh6 Be6 Rd3 f5 Rh3 >>00:01:08.6 1,44 14 50691399 Nxg6 hxg6 Qh6 Be6 Rd3 f5 Rh3 >>00:02:36.0 1,56 15 118533534 Nxg6 hxg6 Qh6 Be6 Rd3 Bc1 Qxc1 Bxb3 >>00:06:24.5 1,58 16 297632898 Nxg6 hxg6 Qh6 Be6 Rd3 Bc1 Qxc1 Bxb3 >> >>Athlon 1400, 60 Mb for hash tables.
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