Author: John Merlino
Date: 14:26:07 07/28/04
Go up one level in this thread
On July 28, 2004 at 16:50:33, Kurt Utzinger wrote: >On July 28, 2004 at 15:54:57, John Merlino wrote: > >>On July 28, 2004 at 15:31:23, John Merlino wrote: >> >>>On July 28, 2004 at 14:46:05, Kurt Utzinger wrote: >>> >>>>Wcrafty 19.15 (console mode P4 1.8) finds the solution >>>>almost instantly. >>>>Kurt >>>> >>>>[D]1knB4/8/7p/5R2/7K/8/3r4/7B w - - 0 1 >>> >>>Is the solution to find 1.Rb5+ or to find the proper continuation (3.Kg4, for >>>example)? >> >>FYI, CM9_SKR on an AMD 2500 finds Rb5+ in less than one second: >> >>Time Depth Score Positions Moves >>0:00 1/3 0.58 1199 1.Rb5+ Nb6 2.Rxb6+ Kc8 3.Be4 Rxd8 >> 4.Rxh6 >>0:00 1/3 2.15 1376 1.Bd5 Nd6 2.Re5 Rf2 >>0:00 1/4 2.21 2747 1.Bd5 Nd6 2.Re5 Nc4 >>0:00 1/5 0.60 7343 1.Bd5 Nd6 2.Rh5 Rh2+ 3.Kg4 Rxh5 >> 4.Kxh5 >>0:00 1/6 0.60 20372 1.Bd5 Nd6 2.Rh5 Rh2+ 3.Kg4 Rxh5 >> 4.Kxh5 Nf5 5.Kg4 >>0:00 1/7 0.57 56760 1.Bd5 Nd6 2.Rh5 Ne4 3.Bxe4 Rxd8 >> 4.Rxh6 Kc7 >>0:00 1/8 0.40 131757 1.Bd5 Nd6 2.Re5 Nc4 3.Bxc4 Rxd8 >> 4.Kh5 Rd4 >>0:00 1/8 0.57 218570 1.Rb5+ Nb6 2.Rxb6+ Kc8 3.Bg5 Rh2+ >> 4.Kg3 Rxh1 5.Bxh6 Kc7 6.Be3 Re1 >>0:01 1/9 0.57 467441 1.Rb5+ Nb6 2.Rxb6+ Kc8 3.Bg5 hxg5+ >> 4.Kxg5 Kc7 5.Rc6+ Kd7 6.Be4 Rd4 >> 7.Bf3 >>0:02 2/10 0.58 922112 1.Rb5+ Nb6 2.Rxb6+ Kc8 3.Kg3 Kxd8 >> 4.Rxh6 Rd4 5.Bf3 Ke7 6.Rc6 Kd8 >>0:05 3/11 0.58 1942346 1.Rb5+ Nb6 2.Rxb6+ Kc8 3.Kg3 Kxd8 >> 4.Rxh6 Rd4 5.Kf2 Ke7 6.Ke3 Rd1 >> 7.Rh7+ Kd6 8.Be4 >>0:12 4/12 0.59 4557802 1.Rb5+ Nb6 2.Kg3 Rxd8 3.Rxb6+ Kc7 >> 4.Rc6+ Kd7 5.Rxh6 Kc7 6.Rc6+ Kd7 >> 7.Bd5 Re8 8.Kf4 Re2 >>0:29 5/13 0.59 11225567 1.Rb5+ Nb6 2.Rxb6+ Kc8 3.Kg3 Kxd8 >> 4.Rxh6 Rd4 5.Kf2 Ke7 6.Ke3 Rd6 >> 7.Rh7+ Ke6 8.Be4 Rd1 >>1:09 6/14 0.59 28697028 1.Rb5+ Nb6 2.Rxb6+ Kc8 3.Kg3 Kxd8 >> 4.Rxh6 Rd4 5.Kf2 Ke7 6.Ke3 Rd6 >> 7.Rh7+ Ke6 8.Bf3 Ke5 9.Rh5+ Kf6 >> >>jm > > > Hi Johne > Can we be sure that 1.Rb5 Nb6 2.Rxb6 Kc8 is > the only winning line? > Kurt Well, now that I look at it more, I don't see how White wins at all? After forcing the above four moves, CM_SKR gives a score of 0.58 for White. White is going to lose one of its Bishops, and KRB vs KRP is a draw. Or, perhaps I'm just a patzer and both The King and I are missing something. jm
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