Author: leonid
Date: 13:50:53 01/30/01
Go up one level in this thread
On January 30, 2001 at 09:35:30, Paul wrote: >On January 30, 2001 at 08:47:44, leonid wrote: > >>Hi! >> >>If you like to solve forced mate, here is one position. >> >>[D]3r2k1/4Qpb1/p1p3pp/8/2P1b3/1P2P1P1/P4P1n/2R1K3 b - - >> >>Game played in Athens in 1968 between Kokkoris and Kovalek. >> >>Please, indicate your result. >> >>If you have some similar (mate found by human from international game) position, >>please indicate it here. >> >>Thanks, >>Leonid. > >Hi Leonid! > >Mine finds a Mate in 7 in 0 seconds at ply 6: > >00:00 BM7 06 1... Bc3+ 2. Rxc3 Nf3+ 3. Ke2 Rd2+ 4. Kf1 Rd1+ 5. Kg2 Rg1+ 6. Kh3 >Bf5+ 7. g4 Bxg4x > >I guess these are too easy for 'usual' chessprograms nowadays ... although they >are always beautiful for the human eye. > >I just remembered the following position from the Hoogovens Tournament in my >country in 1995. It was a game between Cifuentes and Zviaginsev, and black >surprised everyone with a beautiful (series of) sacrifice(s). For me this is one >of the nicest games I've ever seen. Here it is: > >[D]3rr1k1/1b1q1p1p/p2b1npB/2pP4/1p2n3/4N1P1/PPQ1NPBP/R2R2K1 b - - > >The game proceeded like this: > >1... Nxf2 2. Kxf2 Rxe3 3. Bxe3 Ng4+ 4. Kf3 Nxh2+ 5. Kf2 Ng4+ 6. Kf3 Qe6 7. Bf4 >Re8 8. Qc4 Qe3+ 9. Bxe3 Rxe3+ 10. Kxg4 Bc8+ 11. Kg5 h6+ 12. Kxh6 Re5 0-1 > >Now, I don't think Nxf2 results in a mate in X with X<20 :) But you could try >various positions working from the end of the line backwards. So for example: > >[D]4r1k1/1b3p1p/p2bq1p1/2pP4/1pQ2Bn1/5KP1/PP2N1B1/R2R4 b - - > >is a mate in 6. Take one more move back and you get this: > >[D]3r2k1/1b3p1p/p2bq1p1/2pP4/1p3Bn1/5KP1/PPQ1N1B1/R2R4 b - - > >is a mate in <=9, I think. I was just now trying this position: > >[D]3r2k1/1b1q1p1p/p2b2p1/2pP4/1p4n1/4BKP1/PPQ1N1B1/R2R4 b - - > >This is after taking another move back, but I haven't found a mate yet. >Well, I did my best ... hope you like this, my friend! Yes! Thanks! First I just skipped over since it is too deep even to see. Second with 6 moves I tried and found that my selective is useless. Only brute force found solution in 11 seconds. The last one, indicated as probably 9 moves deep, I left for good 3 hours and later disconnected. Probably it demand too long time. I hope that Heiner will find exact number of moves. Greetings from Montreal, Leonid. >Greetings from Amsterdam, >Paul
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.