Author: Paul Jacobean Sacral
Date: 02:57:37 12/01/05
Go up one level in this thread
On December 01, 2005 at 05:29:19, Paul Jacobean Sacral wrote: >On December 01, 2005 at 04:00:30, Mig Greengard wrote: > >>(The original composition was given as mate in 21, but the >>comps find a faster way.) > >That seems to be acknowledged here in recent postings, BUT: If standard engines >designed for games (only) are used, it is not 100% sure that they perfectly >check for all defensive ideas. In other words, there is small risk that the best >defense is missed due to pruning. This general remark :) doesn't apply to this position which is much easier than I thought. Not only that all white moves are checks, black has either only one legal reply, or the alternatives can be quickly refuted because they would lead to shorter mates. [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "New game"] [Black "?"] [Result "1-0"] [SetUp "1"] [FEN "3n3k/bp3pp1/8/8/R1Q2R2/6p1/B2p1PP1/q1rn2K1 w - - 0 1"] [PlyCount "37"] 1. Rh4+ Kg8 2. Rh8+ Kxh8 3. Qh4+ Kg8 4. Qxd8+ Kh7 5. Rh4+ Kg6 6. Qd3+ f5 7. Qxg3+ Kf6 8. Qd6+ Kg5 9. Rh5+ Kxh5 10. Bf7+ Kg5 11. Qg3+ Kf6 12. Qg6+ Ke5 13. Qe6+ Kf4 14. g3+ Kg4 15. Qg6+ Kf3 16. Qxf5+ Ke2 17. Qb5+ Kf3 18. Qh5+ Ke4 19. Qd5# 1-0 Yours truly Paul J. Sacral
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.