Author: Ed Schröder
Date: 06:26:25 02/06/01
Go up one level in this thread
On February 06, 2001 at 05:12:37, Arturo Ochoa wrote: >On February 05, 2001 at 22:40:58, Howard Exner wrote: > >>On February 05, 2001 at 19:02:26, Arturo Ochoa wrote: >> >>>[D]r1b5/p2k1r1p/3P2pP/1ppR4/2P2p2/2P5/P1B4P/4R1K1 w - - >>> >>> >>>Main Line: 1. Bxg6!! hxg6 2. Re7+ Rxe7 3. dxe7+ Kxe7 4. Rd8! Kxd8 5. h7 1-0 >>> >>>Neither the Programs that I have tested (Fritz, Rebel, Hiarcs, Junior, Gromit, >>>LambChop, Diep2) can solve the position. They can only "see" the weak move 1. >>>cxb5? >>> >>>Tell me if I am wrong. >>> >>>Regards, Arturo. >> >>A while back, maybe a year ago, Dann Corbit and I discussed this position. >>He did give a line where cxb5 also wins. I liked the Bxg6 solution more, but a >>wins a win I guess. >> > >Thanks. The problem with this position is The shorter winning is Bg6! > > >>Rebel used to get Bxg6 for this one, but have not checked Century 3 on it. >>How long did you give the programs to test this? > >About 5 minutes. Don't know which Rebel version you used and which settings but Century 3 takes 1:27 and Century 2 running under Rebel-Tiger 25 seconds. PC PIII-800. Ed ---------- Loading... Engine version : Rebel Century 2.01 Hash table size : 40 Mb r1b5/p2k1r1p/3P2pP/1ppR4/2P2p2/2P5/P1B4P/4R1K1 w - - 00:00 02.00 -0.02 1.cxb5 Bb7 00:01 04.00 0.24 1.Kf2 Rb8 2.Rxc5 Kxd6 3.Rxb5 00:01 05.00 0.32 1.Kf2 a6 2.Bd1 Rb8 3.Bg4+ Kd8 00:02 06.00 0.14 1.Kf2 Bb7 2.Rxc5 Kxd6 3.Rxb5 Rc8 00:02 07.00 0.14 1.Kf2 Bb7 2.Rxc5 Kxd6 3.Rxb5 Rc8 4.Rd1 Ke6 00:03 07.03 0.15 1.cxb5 Bb7 2.Rdd1 a6 3.b6 00:03 07.09 0.17 1.Red1 00:04 08.00 0.32 1.Red1 Kd8 2.cxb5 Bg4 3.R1d2 Be6 4.Rxc5 Bxa2 00:05 08.03 0.32 1.cxb5 00:05 08.03 0.63 1.cxb5 Bb7 2.Rdd1 c4 3.Kf2 Raf8 4.Be4 Bxe4 5.Rxe4 00:08 09.00 0.54 1.cxb5 Bb7 2.Rd2 c4 3.Kf2 Raf8 00:15 09.20 0.56 1.Bxg6 hxg6 2.Re7+ Rxe7 3.dxe7+ Kxe7 4.Rd8 Kxd8 5.h7+ Kd7 6.h8=Q 00:20 10.00 1.20 1.Bxg6 hxg6 2.Re7+ Rxe7 3.dxe7+ Kxe7 4.Rd8 Kxd8 5.h7 Ke7 6.h8=Q 00:41 11.00 1.33 1.Bxg6 hxg6 2.Re7+ Rxe7 3.dxe7+ Kxe7 4.Rd8 Kxd8 5.h7 Ke7 6.h8=Q 01:48 12.00 1.38 1.Bxg6 hxg6 2.Re7+ Rxe7 3.dxe7+ Kxe7 4.Rd8 Kxd8 5.h7 Ke7 6.h8=Q
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