Author: Mogens Larsen
Date: 12:00:30 03/05/01
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On March 05, 2001 at 14:11:51, Sune Larsson wrote: > > [D]3k4/1p4pP/4Rp2/3p3q/3N4/8/K2PP1PP/8 w - - 0 1 > > Kubbel, Shajmati 1925 > > In this position black can relax a bit. His main worry is the dangerous > pawn on h7, but now he's ready to send it to the blissful hunting-grounds. > Then he should be able to play for a win since white's pawns are somewhat > loose?! No, not this time monsigneur! Look above - the name Kubbel spells > brilliant co-operation of the white pieces. True - it's actually white > to move and win. This one is about covering and taking squares. And shows > what a rook and knight can do to a queen... > > > Test: White to move and win. The time for your program to find the correct > line, gives a clue about the performance in blitz, rapid game and > tournament level. Solution further down. This is what Gandalf thinks using an Athlon 800 and 104Mb hash. The variation looks okay but the score is a little modest for a winning line. Engine: Gandalf 4.32h by Steen Suurballe 6.01 0:00 -0.83 1.Rd6+ Ke8 2.Nf5 Qxh7 3.Rxd5 Qxh2 4.Nxg7+ Ke7 5.Nf5+ Ke6 (112.606) 160.8 7.01 0:01 -0.83 1.Rd6+ Ke8 2.Nf5 Qxh7 3.Rxd5 Qxh2 4.Nxg7+ Ke7 5.Nf5+ Ke6 (245.992) 189.2 8.01 0:02 -0.83 1.Rd6+ Ke8 2.Nf5 Qxh7 3.Rxd5 Qxh2 4.Nxg7+ Ke7 5.Nf5+ Ke6 6.Ne3 (552.846) 212.6 9.01 0:05 -0.92 1.Rd6+ Ke8 2.Nf5 Qxh7 3.Rxd5 Qxh2 4.Nxg7+ Ke7 5.Nf5+ Ke6 6.Ne3 b6 (1.271.239) 227.0 10.01 0:12 -0.86 1.Rd6+ Ke8 2.Nf5 Qxh7 3.Rxd5 g6 4.Nd6+ Ke7 5.h3 Qg8 6.e4 Qxd5+ 7.exd5 Kxd6 (2.772.908) 225.4 11.01 0:33 -1.15 1.Rd6+ Ke8 2.Nf5 Qxh7 3.Rxd5 Qxh2 4.Nxg7+ Kf8 5.Nf5 Qxg2 6.e4 Ke8 7.Kb3 (7.383.979) 217.1 12.01 1:17 -1.15 1.Rd6+ Ke8 2.Nf5 Qxh7 3.Rxd5 g6 4.Nd6+ Ke7 5.h3 Qg8 6.e4 Qxd5+ 7.exd5 Kxd6 (17.231.624) 221.2 12.07 2:01 -1.13++ 1.Re3 (26.010.474) 213.9 12.07 2:15 -0.64++ 1.Re3 (29.090.824) 215.1 12.01 2:32 -0.14++ 1.Re3 (32.719.207) 214.8 12.01 4:10 +0.84++ 1.Re3 (49.845.236) 199.2 12.01 5:47 +1.13 1.Re3 Qxh7 2.Ne6+ Kc8 3.Rc3+ Kb8 4.Nf8 Qf5 5.e4 dxe4 6.Rc5 Qf1 7.Nd7+ Ka7 8.Ra5+ Qa6 9.Rxa6+ Kxa6 (64.484.212) 185.2 13.01 7:58 +1.15 1.Re3 Qxh7 2.Ne6+ Kc8 3.Rc3+ Kb8 4.Nf8 Qf5 5.e4 dxe4 6.Rc5 Qg4 7.h3 Qe2 8.Nd7+ Ka7 9.Ra5+ Qa6 10.Rxa6+ Kxa6 (87.521.206) 182.9 14.01 10:36 +1.15 1.Re3 Qxh7 2.Ne6+ Kc8 3.Rc3+ Kb8 4.Nf8 Qf5 5.e4 dxe4 6.Rc5 Qg4 7.h3 Qe2 8.Nd7+ Ka7 9.Ra5+ Qa6 10.Rxa6+ Kxa6 (115.543.304) 181.4 Regards, Mogens
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