Author: Bruce Moreland
Date: 16:22:03 10/05/01
Go up one level in this thread
On October 04, 2001 at 23:33:42, Dann Corbit wrote: >I have the CCC archives, but there is a big hole in them, since the ftp site has >not been working for some time. Anyway, it sure looks to me like Ke3 is also a >solution. Can someone refute this move sequence, or show me a perpetual check >or some other escape? It looks to me like black is simply toast, and rather >quickly at that! >Position after Kb3: >[D] 8/k1b5/P4p2/1Pp2p1p/2P2P1P/1K6/3B4/8 b - - I ran this for several hours today: 1) Shuffling pieces is around is about +3.5 with my program. This lasts through ply 17, approximately, with the score going up as high as +4. Selected move varied between Be3 and Kb3. 2) In ply 18 (90 sec on a dual 1.2 ghz AMD) it found b6+, with a score of +4.5. This may have been a solution, or at least a good sniff. This lasted until ply 20. 3) In ply 20 (477 sec), it failed high on Be3 and went up to +6. This has held through ply 24, with a score of about +7. I never saw a high score with Kb3 after the program found b6+. I think that Be3 was missed by the original the players and by Reinfeld because you'd think that Bb6 would hold, but it doesn't. I thought that there might be some funky way to draw two pawns down, but white can win easily by triangulation. If Bd6 is tried rather than Bb6, you get something similar to what happens after b6+, after Ka5 Bc7+ b6+ Bxb6+ Kc5. Kb3 is at very least not as forcing as the other two. The problem is kind of wrecked if white can do nothing and still win. I don't think that the +3 or whatever that programs will show after Kb3 means anything. It's likely that they aren't seeing a win. bruce
This page took 0.01 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.