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Subject: Re: SMIRF facing Zugzwang

Author: Reinhard Scharnagl

Date: 10:15:00 06/05/05

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On June 05, 2005 at 12:53:45, Eduard Nemeth wrote:

>[D]6n1/3p4/8/1P1Pk1n1/4P3/B5K1/8/8 w - -
>
>b6! wins easy, but S9 cannot find it!!!

after having a big redesign of Smirf's cache structure, implementing a first
version of a "two leading moves iterative deepening" and now displaying a second
best move in Smirf's PV line where available Smirf today has calculated here:

06:01.0 End of thinking (time/stop)
04:42.8 (18.01=) +4.534 1.b6 (=0=) Nxe4+ 2.Kh4 Nd6 3.Bxd6+ Kxd6 4.Kg5 Ne7 5.b7
Kxd5 6.b8=Q Nc6 7.Qb5+ Kd6 8.Kf4 Kc7
02:34.5 (17.01=) +4.515 1.b6 (=0=) Nxe4+ 2.Kh4 Nd6 3.Bxd6+ Kxd6 4.Kg5 Ne7 5.b7
Kxd5 6.b8=Q Nc6 7.Qb5+ Kd6 8.Qd3+ Kc7
01:13.9 (16.01=) +4.480 1.b6 (=0=) Nxe4+ 2.Kh4 Nd6 3.Bxd6+ Kxd6 4.Kg5 Ne7 5.b7
Kxd5 6.b8=Q Ke6 7.Qf4 d6 8.Qe4+ Kd7
01:13.8 (16.01+) +4.480 1.b6 (=0=) Nxe4+ 2.Kh4 Nd6 3.Bxd6+ Kxd6 4.Kg5 Ne7 5.b7
Kxd5 6.b8=Q Ke6 7.Qf4 d6 8.Qe4+ Kd7
00:36.8 (15.01=) +4.407 1.b6 (=0=) Nxe4+ 2.Kh4 Nd6 3.Bxd6+ Kxd6 4.Kg5 Ne7 5.b7
Kxd5 6.b8=Q Ke6 7.Qb6+ d6 8.Qe3+ Kd7
00:27.5 (14.01=) +4.444 1.b6 (Bb2+) Nxe4+ 2.Kh4 Nd6 3.Bxd6+ Kxd6 4.Kg5 Ne7 5.b7
Nxd5 6.b8=Q+ Ke6 7.Qf8 Ke5 8.Qf5+ Kd6
00:18.8 (13.02=) +4.391 1.b6 (Bb2+) Nxe4+ 2.Kh4 Nd6 3.Bxd6+ Kxd6 4.Kg5 Ne7 5.b7
Nxd5 6.b8=Q+ Ke6 7.Qf8 Ke5 8.Qf5+ Kd6
00:12.9 (13.02+) +3.048 1.b6 (Bb2+) Nxe4+ 2.Kh4 Nd6 3.Bxd6+ Kxd6 4.Kg5 Ne7 5.b7
Kc7 6.d6+ Kxb7 7.dxe7 Kc6 8.e8=Q Kd5
00:10.4 (13.02+) +1.868 1.b6 (Bb2+) Nxe4+ 2.Kh4 Nd6 3.Bxd6+ Kxd6 4.Kg5 Ne7 5.b7
Kc7 6.d6+ Kxb7 7.dxe7 Kc6 8.e8=Q Kd5
00:08.5 (13.02+) +1.278 1.b6 (Bb2+) Nxe4+ 2.Kh4 Nd6 3.Bxd6+ Kxd6 4.Kg5 Ne7 5.b7
Kc7 6.d6+ Kxb7 7.dxe7 Kc6 8.e8=Q Kd5
00:07.1 (13.02+) +0.983 1.b6 (Bb2+) Nxe4+ 2.Kh4 Nd6 3.Bxd6+ Kxd6 4.Kg5 Ne7 5.b7
Kc7 6.d6+ Kxb7 7.dxe7 Kc6 8.e8=Q Kd5
00:06.4 (13.01=) +0.982 1.Bb2+ (b6) Kd6 2.Kf4 Nxe4 3.Kxe4 Kc5 4.Ke5 Kxb5 5.Kd6
Kc4 6.Bg7 Nh6 7.Bxh6 Kd4 8.Be3+ Kxe3
00:06.1 (13.01+) +0.982 1.Bb2+ (b6) Kd6 2.Kf4 Nxe4 3.Kxe4 Kc5 4.Ke5 Kxb5 5.Kd6
Kc4 6.Bg7 Nh6 7.Bxh6 Kd4 8.Be3+ Kxe3
00:05.1 (12.02=) +0.909 1.Bb2+ (b6) Kd6 2.Kf4 Nxe4 3.Kxe4 Kc5 4.Bd4+ Kxb5 5.Kd3
Ka4 6.Bb6 d6 7.Ba5 Kxa5 8.Kc4
00:04.4 (12.02+) +0.909 1.Bb2+ (b6) Kd6 2.Kf4 Nh3+ 3.Kg4 Nf2+ 4.Kf3 Nd3 5.Bd4
Kc7 6.Ke3 Ne1 7.b6+ Kd6
00:04.2 (12.01=) +0.908 1.b6 (=0=) Nxe4+ 2.Kh4 Nd6 3.Bxd6+ Kxd6 4.Kg5 Ne7 5.b7
Kc7 6.d6+ Kxb7 7.dxe7 Kc6
00:03.2 (11.02=) +0.835 1.b6 (Bb2+) Nxe4+ 2.Kf3 Nd6 3.Bxd6+ Kxd6 4.Ke2 Nh6 5.b7
Kc7 6.d6+ Kxb7 7.Kd3
00:03.0 (11.01-) +1.129 1.Bb2+ (=0=) Kd6 2.Kf4 Nh3+ 3.Kg4 Nf2+ 4.Kf3 Nd3 5.Ba3+
Kc7 6.Bd6+ Kxd6 7.Ke3

Regards, Reinhard.
00:02.6 (11.00-) +0.982 1.Bb2+ (=0=) Kd6 2.Kf4 Nh3+ 3.Kg4 Nf2+ 4.Kf3 Nd3 5.Ba3+
Kc7 6.Bd6+ Kxd6 7.Ke3
00:02.1 (11.01-) +1.129 1.Bb2+ (=0=) Kd6 2.Kf4 Nh3+ 3.Kg4 Nf2+ 4.Kf3 Nd3 5.Ba3+
Kc7 6.Bd6+ Kxd6 7.Ke3
00:01.5 (10.02=) +1.129 1.Bb2+ (b6) Kd6 2.Kf4 Nxe4 3.Kxe4 Kc5 4.Bd4+ Kxb5 5.Kd3
Ka4 6.Bb6 d6 7.Ba5
00:01.4 (10.01-) +1.423 1.b6 (=0=) Nxe4+ 2.Kf3 Nd6 3.Bxd6+ Kxd6 4.Ke2 Nh6 5.b7
Kc7 6.d6+ Kxb7 7.Kd3
00:01.3 (10.00-) +1.276 1.b6 (=0=) Nxe4+ 2.Kf3 Nd6 3.Bxd6+ Kxd6 4.Ke2 Nh6 5.b7
Kc7 6.d6+ Kxb7 7.Kd3
00:01.1 (10.01-) +1.423 1.b6 (=0=) Nxe4+ 2.Kf3 Nd6 3.Bxd6+ Kxd6 4.Ke2 Nh6 5.b7
Kc7 6.d6+ Kxb7 7.Kd3
00:01.0 (09.01+) +1.423 1.b6 (Bb2+) Nxe4+ 2.Kf3 Nd6 3.Bxd6+ Kxd6 4.Ke2 Kxd5 5.b7
Nf6 6.b8=Q Ne4
00:00.9 (09.01+) +0.538 1.b6 (Bb2+) Nxe4+ 2.Kf3 Nd6 3.Bxd6+ Kxd6 4.Ke2 Kxd5 5.b7
Nf6 6.b8=Q Ne4
00:00.8 (08.02=) +0.317 1.b6 (Bb2+) Nxe4+ 2.Kf3 Nd6 3.Bxd6+ Kxd6 4.Ke2 Kxd5 5.b7
Nf6 6.b8=Q Ne4
00:00.2 (08.01-) +1.569 1.b6 (Bb2+) Nxe4+ 2.Kg2 Nd6 3.Bxd6+ Kxd6 4.b7 Kc7 5.d6+
Kxb7 6.Kf3
00:00.1 (08.01-) +1.569 1.b6 (Bb2+) Nxe4+ 2.Kg2 Nd6 3.Bxd6+ Kxd6 4.b7 Kc7 5.d6+
Kxb7 6.Kf3
00:00.0 (06.01=) +1.496 1.b6 (Bb2+) Nxe4+ 2.Kh2 Nd6 3.Bxd6+ Kxd6 4.b7 Kc7 5.d6+
Kxb7 6.Kg3



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