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Subject: Re: Interesting queen endgame

Author: Tony Werten

Date: 05:14:13 03/16/02

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On March 15, 2002 at 05:51:47, K. Burcham wrote:

>
>
>
>
> [D] 2q5/2P5/5p2/4p1k1/8/8/2Q5/6K1 w - -
>
>73.Kh2! Kh6! (the only move to hold the position) 74. Qd2+ Kg7! 75. Qd8 Qf5! 76.
>c8=Q Qf2+ with draw
>I wonder how many programs will find 73.. Kh6! and in how much time...

XiniX needs 82 sec to realize it's a draw.

ply:12/25 score:0,386 time: 43s  59 Kn/s
1.Kh2 Kh5 2.Qc1 e4 3.Qd1+ Kh4 4.Qe1+ Kh5 5.Qe2+ Kg6 6.Qxe4+ Kf7

ply:13/25 score:0,086 Kh2 Fail Low
ply:13/25 score:0,000 time: 82s  57 Kn/s
1.Kh2 Kh5 2.Kg3 Qg4+ 3.Kh2 Qf4+ 4.Kg2 Qg4+

ply:14/33 score:0,000 time:168s  57 Kn/s
1.Kh2 Kh6 2.Qc4 Kg7 3.Kg2 f5 4.Kf2 Kf8 5.Qc6 e4 6.Qc5+ Ke8 7.Qe5+ Kf7

ply:15/33 score:0,000 time:273s  55 Kn/s
1.Kh2 Kh6 2.Qc4 Kg7 3.Kg2 f5 4.Kf2 Kf8 5.Qc6 e4 6.Kg3 Kf7

ply:16/37 score:0,000 time:423s  56 Kn/s
1.Kh2 Kh6 2.Qc4 Kg7 3.Kg2 f5 4.Kf2 Kf8 5.Qc6 e4 6.Kg2 Kf7 7.Qd5+ Ke7

Tony

>
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> [D] 3Q4/2P5/5pk1/4p3/5q2/8/4K3/8 b - - 0 5
>
> 76..Qe4+! 77. Kd2 Qg2+(Qb4+ also possible) 78. Kd3 Qf3+ 79. Kc4 Qc6+=
>or 78. Ke3 Qh3(g3)+ 79. Ke4 Qg2+=



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