Author: Roy Eassa
Date: 16:03:21 01/27/02
Go up one level in this thread
On January 27, 2002 at 19:00:47, Roy Eassa wrote: >On January 27, 2002 at 18:49:28, Roy Eassa wrote: > >>On January 27, 2002 at 18:22:33, Andrew Smith wrote: >> >>>I don't know about how well programs are to find draws by stalemate. It looks >>>like some have big problems. The lines begins with Rc4. I guess if your program >>>finds the first move the rest should follow. >>> >>>[D]8/p7/P2p1p2/3n4/R2P3K/1p2P1N1/P1p2P1k/Rn6 w KQkq - 0 1 >> >> >>With help from Fritz 7, I think White can draw, however I don't see where the >>stalemate comes into the picture: >> >>1.Rc4! b2 2.Rxc2 bxa1Q 3.f4+ Kg1 4.Kh3 Nxe3 5.Rh2 d5 6.f5 Qc3 7.Ne2+ Kf1 8.Nxc3 >>Nxc3 9.Rb2 Ne2 10.Rb6 Ng1+ 11.Kg3 Nxf5+ 12.Kf4 Nxd4 13.Rxf6 Ke2 14.Ke5 Kd3 >>15.Rf7 Nge2 16.Kxd5 Nc3+ 17.Kd6 Nxa2= > > >Forget what I posted. Black's 5...d5? is a bad move; Black can still win with >5...f5! > > >But I think I see the real draw (and the stalemate mentioned): > >1.Rc4! b2 2.Rxc2 bxa1Q 3.f3+! > [3.f4+ Kg1 4.Kh3 Nxe3 5.Rh2 d5? > (5...f5! 6.Ne2+ Kf1 7.Ng3+ Ke1 8.Re2+ Kd1 wins) > 6.f5 Qc3 7.Ne2+ Kf1 8.Nxc3 Nxc3 9.Rb2 Ne2 10.Rb6 Ng1+ > 11.Kg3 Nxf5+ 12.Kf4 Nxd4 13.Rxf6 Ke2 14.Ke5 Kd3 > 15.Rf7 Nge2 16.Kxd5 Nc3+ 17.Kd6 Nxa2 =] > >3...Kg1 4.Kh3! Nxe3 5.Rh2 f5 6.f4 d5 7.a3! Qc3 > [7...Qxa3 8.Rg2+ Nxg2 stalemate] > >8.Ne2+ Kf1 9.Nxc3 Nxc3 10.Rb2 Ne2 11.Rb7 Nxf4+ 12.Kh4= Black should take the draw with 7...Qxa3 because the correct evaluation of the line starting with 7...Qc3 may actually be a win for White!
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