Author: Ernst Walet
Date: 06:47:30 04/29/01
Go up one level in this thread
On April 29, 2001 at 06:23:43, Ernst Walet wrote: > >It seems to me that at least Fritz6 has a basic rule implemented not to move the >king to the corner in the endgame, or at least give it a big penalty; it will >not play 2.Kg1. After making this move the score is increasing rapidly. > >Ernst. On second thought, after doing some deeper testing, this seems not the case. Fritz6 needs 13 ply to find 2.Kg1 and 12 ply to see the same high score after 2.Kg1, so no special rule it seems. Ernst. New position 5q2/n2P4/2b1k3/6Q1/8/3N4/4BK2/8 w - - 0 1 Analysis by Fritz 6: 2.Ke3-- ± (0.91) Depth: 1/2 00:00:00 2.Ke3-- Kxd7 ² (0.31) Depth: 1/3 00:00:00 2.Ke3 Kxd7 3.Ne5+ Ke6 ² (0.38) Depth: 2/7 00:00:00 2.Ke3 Kxd7 3.Ne5+ Ke6 4.Bg4+ Kd6 ² (0.41) Depth: 3/9 00:00:00 2.Ke3 Kxd7 3.Qg4+ Ke8 4.Qe6+ Qe7 ² (0.44) Depth: 4/13 00:00:00 2kN 2.Ke3 Kxd7 3.Bg4+ Ke8 4.Qe5+ Qe7 5.Be6 ² (0.41) Depth: 5/15 00:00:00 11kN 2.Ke3 Kxd7 3.Bg4+ Ke8 4.Qh5+ Qf7 5.Qh8+ Ke7 6.Qe5+ Kf8 ² (0.47) Depth: 6/19 00:00:00 37kN 2.Kg3! ² (0.50) Depth: 6/19 00:00:00 55kN 2.Kg3! Kxd7 3.Bg4+ Kc7 4.Qa5+ Kb8 ² (0.53) Depth: 6/19 00:00:00 72kN 2.Kg3 Kxd7 3.Bg4+ Kc7 4.Qa5+ Kb8 5.Qe5+ Kb7 ² (0.47) Depth: 7/20 00:00:00 156kN 2.Ke3! ² (0.50) Depth: 7/20 00:00:00 163kN 2.Ke3! Kxd7 3.Bg4+ Ke8 4.Qh5+ Qf7 ² (0.53) Depth: 7/21 00:00:00 194kN 2.Ke1! ² (0.56) Depth: 7/21 00:00:00 220kN 2.Ke1! Kxd7 3.Nc5+ Kc8 4.Bg4+ Kb8 ² (0.59) Depth: 7/21 00:00:00 251kN 2.Ke1! ± (0.91) Depth: 8/19 00:00:00 342kN 2.Ke1! Kxd7 3.Nc5+ Kd6 4.Qg3+ Kd5 5.Qd3+ Ke5 6.Qe3+ Kd6 +- (2.97) Depth: 8/23 00:00:01 504kN 2.Ke1 Kxd7 3.Nc5+ Kd6 4.Qg3+ Kd5 5.Qd3+ Ke5 6.Qe3+ Kd6 +- (3.00) Depth: 9/24 00:00:03 1302kN, tb=4 2.Ke1 Kxd7 3.Nc5+ Kd6 4.Qg3+ Kd5 5.Qd3+ Ke5 6.Qe3+ Kd6 +- (3.16) Depth: 10/27 00:00:08 3616kN, tb=47 2.Ke1 Kxd7 3.Nc5+ Kd6 4.Qg3+ Kd5 5.Qd3+ Ke5 6.Qe3+ Kd6 +- (3.38) Depth: 11/28 00:00:21 9555kN, tb=271 2.Ke1 Kxd7 3.Nc5+ Kd6 4.Qg3+ Kd5 5.Qd3+ Ke5 6.Qe3+ Kd6 +- (3.38) Depth: 12/31 00:01:05 29468kN, tb=1133 2.Ke1 Kxd7 3.Nc5+ Kc8 4.Qe5 Bd7 5.Na6 Kd8 6.Qc7+ Ke7 +- (3.38) Depth: 13/33 00:03:19 89829kN, tb=4916 2.Kg1! +- (3.41) Depth: 13/35 00:07:50 207296kN, tb=14850 2.Kg1! Kxd7 3.Nc5+ Kc8 4.Ba6+ Kb8 5.Qg3+ Ka8 6.Bb7+ Bxb7 +- (6.09) Depth: 13/35 00:08:26 224470kN, tb=15809 2.Kg1 Kxd7 3.Nc5+ Kc8 4.Ba6+ Kb8 5.Qg3+ Ka8 6.Bb7+ Bxb7 +- (6.16) Depth: 14/35 00:11:40 314234kN, tb=24364 2.Kg1 Kxd7 3.Nc5+ Kc8 4.Ba6+ Kb8 5.Qg3+ Ka8 6.Bb7+ Bxb7 +- (6.19) Depth: 15/37 00:29:17 791508kN, tb=70383 (PIII-500E, 160MB hash, all 3 4 5 piece EGTB's, 29.04.2001) New position 5q2/n2P4/2b1k3/6Q1/8/3N4/4B3/6K1 b - - 0 1 Analysis by Fritz 6: 2...Kxd7! ± (1.03) Depth: 1/6 00:00:00 2...Kxd7! 3.Ne5+ Kd6 = (0.12) Depth: 1/6 00:00:00 2...Kxd7 3.Qd2 = (0.25) Depth: 2/8 00:00:00 2...Kxd7 3.Bg4+ Ke8 4.Nc5 = (0.22) Depth: 3/12 00:00:00 2kN 2...Kxd7 3.Bg4+ Ke8 4.Qe5+ Qe7 5.Kf2 = (0.22) Depth: 4/14 00:00:00 10kN 2...Kxd7 3.Bg4+ Kc7 4.Qa5+ Kb8 5.Qb6+ Ka8 6.Nc5 ² (0.41) Depth: 5/17 00:00:00 26kN 2...Kxd7 3.Nc5+ Kc8 4.Bg4+ Kb8 5.Qe5+ Ka8 6.Be6 Nb5 ² (0.47) Depth: 6/18 00:00:00 79kN 2...Kxd7 3.Nc5+ Kc8 4.Ba6+ Kb8 5.Qe5+ Ka8 6.Ne6 Qg8+ 7.Kf2 ² (0.59) Depth: 7/22 00:00:00 206kN 2...Kxd7-- ± (0.91) Depth: 8/20 00:00:00 234kN 2...Kxd7-- 3.Nc5+ Kd6 4.Qg3+ Kd5 5.Bc4+ Kxc4 6.Qb3+ Kxc5 7.Qa3+ +- (2.56) Depth: 8/24 00:00:02 894kN, tb=4 2...Kxd7 3.Nc5+ Kd6 4.Qg3+ Kd5 5.Bc4+ Kxc4 6.Qb3+ Kxc5 7.Qa3+ +- (2.53) Depth: 9/25 00:00:06 2898kN, tb=37 2...Kxd7 3.Nc5+ Kd6 4.Qg3+ Kd5 5.Qd3+ Ke5 6.Qc3+ Kf5 7.Qh3+ +- (2.69) Depth: 10/28 00:00:16 7669kN, tb=192 2...Kxd7-- +- (3.00) Depth: 11/28 00:00:18 8724kN, tb=207 2...Kxd7-- 3.Nc5+ Kd6 4.Qg3+ Kd5 5.Qd3+ Ke5 6.Qe3+ Kd6 7.Qd4+ +- (3.25) Depth: 11/30 00:00:32 15144kN, tb=616 2...Kxd7-- +- (3.56) Depth: 12/31 00:00:40 18939kN, tb=744 2...Kxd7-- 3.Nc5+ Kc8 4.Ba6+ Kb8 5.Qg3+ Ka8 6.Bb7+ Bxb7 7.Nd7 +- (6.09) Depth: 12/32 00:01:17 36068kN, tb=2074 2...Kxd7 3.Nc5+ Kc8 4.Ba6+ Kb8 5.Qg3+ Ka8 6.Bb7+ Bxb7 7.Nd7 +- (6.22) Depth: 13/33 00:06:01 165860kN, tb=15293 (PIII-500E, 160MB hash, all 3 4 5 piece EGTB's, 29.04.2001)
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