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Subject: Re: Wels tournament: Nimzo 8 - SOS -> interesting endgame

Author: Uri Blass

Date: 16:54:13 12/29/00

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On December 29, 2000 at 19:15:49, Enrique Irazoqui wrote:

>Rebel Century 3 saw the winning line immediately, while Gandalf 4.32g needed 40
>seconds and Shredder 5 almost 3 minutes. All on a P750.
>
>Enrique
>
>New position
>8/8/5kp1/7p/7K/4BP2/8/8 w - - 0 1
>
>Analysis by Gandalf 4.32g:
>
>1.Bg5+ Ke5 2.f4+ Kd5 3.Kg3 Ke4 4.Kg2 Kf5 5.Kf3 Ke6
>  +-  (2.38)   Depth: 2   00:00:00
>  +-  (2.43)   Depth: 9   00:00:00  26kN
>1.f4 Kf5 2.Bd2 Ke4 3.Kg5 Kf3 4.Be1 Ke4 5.Bg3 Kf3
>  +-  (2.44)   Depth: 9   00:00:00  26kN
>  +-  (3.02)   Depth: 12   00:00:01  128kN
>1.Bf4 Kf5 2.Bb8 Kf6 3.f4 Kf5 4.Be5 Ke6 5.Kg5 Kd5
>  +-  (3.04)   Depth: 12   00:00:01  128kN
>  +-  (3.29)   Depth: 13   00:00:01  241kN
>1.f4
>  +-  (3.31)   Depth: 13   00:00:01  241kN
>1.Bf4 Kf5 2.Bb8 Kf6 3.f4 Kf5 4.Be5 Ke6 5.Kg5 Kd5
>  +-  (3.26)   Depth: 14   00:00:03  650kN
>1.f4 Kf5 2.Bc1 Ke4 3.Kg5 Kf3 4.Kxg6 h4 5.f5 h3
>  +-  (3.28)   Depth: 14   00:00:03  650kN
>  +-  (4.00)   Depth: 16   00:00:14  3500kN
>1.Bf4 Kf5 2.Bb8 Kf6 3.f4 Kf5 4.Be5 Ke6 5.Kg5 h4
>  +-  (3.71)   Depth: 17   00:00:39  13550kN
>  +-  (4.48)   Depth: 19   00:00:49  14783kN
>
>(Irazoqui, CadaquƩs 30.12.2000)
>
>
>
>
>Engine: Shredder 5
>by Stefan Meyer-Kahlen
>
>  1.00	 0:00 	+2.64 	1.Bf4 (1) 0.1
>  2.00	 0:00 	+2.35-- 	1.Bf4 Kf5 (30) 1.8
>  2.00	 0:00 	+2.55 	1.Bf4 Kf5 (37) 1.7
>  3.00	 0:00 	+2.48 	1.Bf4 Kf5 2.Be3 (150) 5.5
>  4.00	 0:00 	+2.76++ 	1.Bf4 Kf5 2.Bc7 Kf6 (460) 11.5
>  4.00	 0:00 	+2.76 	1.Bf4 Kf5 2.Bc7 Kf6 (478) 10.1
>  5.00	 0:00 	+2.52 	1.Bf4 Kf5 2.Bc7 Kf6 3.Bb6 (673) 12.4
>  5.00	 0:00 	+2.53++ 	1.Bg5+ Ke5 2.Bd2 Kd4 3.Kg5 h4 (996) 14.8
>  5.00	 0:00 	+2.62 	1.Bg5+ Ke5 2.Bd2 Kf6 3.Bh6 Kf5 4.Bf4 (1.295) 16.8
>  5.00	 0:00 	+2.64++ 	1.Bc1 Kf5 2.Bh6 Kf6 3.Be3 Kf5 4.Bh6 Kf6 (1.701) 19.5
>  5.00	 0:00 	+2.62 	1.Bc1 Kf5 2.Bh6 Kf6 3.Be3 Kf5 4.Bh6 Kf6 (1.725) 18.5
>  6.00	 0:00 	+2.64 	1.Bc1 Kf5 2.Bh6 Kf6 3.Be3 Kf5 4.Bh6 Kf6 (2.023) 19.8
>  7.01	 0:00 	+2.56 	1.Bc1 Kf5 2.Bh6 Kf6 3.Be3 Kf5 4.Bh6 Kf6 (3.365) 28.7
>  7.04	 0:00 	+2.58++ 	1.Bf4 Kf5 2.Bc7 g5+ 3.Kxh5 Kf6 (4.327) 30.4
>  7.04	 0:00 	+2.58 	1.Bf4 Kf5 2.Bc7 Kf6 3.Bb6 Kf5 4.Bd4 (4.518) 30.3
>  8.01	 0:00 	+2.58 	1.Bf4 Kf5 2.Bc7 Kf6 3.Bd8+ Kf5 4.Bc7 Kf6 (6.144) 36.7
>  9.01	 0:00 	+2.58 	1.Bf4 Kf5 2.Bc7 Kf6 3.Bd8+ Kf5 4.Bc7 Kf6 (8.996) 48.1
> 10.01	 0:00 	+2.58 	1.Bf4 Kf5 2.Bc7 Kf6 3.Bd8+ Kf5 4.f4 (12.695) 55.9
> 11.01	 0:00 	+2.83++ 	1.Bf4 Ke6 2.Kg5 h4 (18.225) 69.0
> 11.01	 0:00 	+3.00 	1.Bf4 Kf5 2.Bc7 Kf6 3.f4 Kf5 4.Be5 Ke6 5.Kg5 Kf7 6.Bf6
>(23.846) 78.9
> 12.01	 0:00 	+3.16 	1.Bf4 Kf5 2.Bc7 Kf6 3.f4 Ke6 4.Kg5 Kf7 5.Be5 Kg8 6.Bf6 Kf7
>(30.231) 87.1
> 12.06	 0:00 	+3.17++ 	1.Bc1 Kf5 2.f4 Ke6 3.Kg5 h4 4.Kxh4 Kf5 5.Kg3 Ke6 (40.050)
>100.8
> 12.06	 0:00 	+3.30 	1.Bc1 Kf5 2.f4 Kf6 3.Bb2+ Ke6 4.Kg5 Kd5 5.Be5 Ke4 6.Bc7 Kd4
>7.Kxg6 h4 (47.438) 104.9
> 12.10	 0:00 	+3.31++ 	1.Bd2 Ke5 2.Kg5 Kd4 3.Kxg6 h4 4.Kg5 h3 5.Bf4 Kd5 6.Kg4
>Kc5 (54.615) 98.9
> 12.10	 0:00 	+3.40 	1.Bd2 Kf5 2.f4 Kf6 3.Bc3+ Ke6 4.Kg5 Kf7 5.Bb2 Ke6 6.Bg7 Ke7
>7.Kxg6 h4 (63.522) 106.4
> 13.01	 0:00 	+3.40 	1.Bd2 Kf5 2.f4 Kf6 3.Bc3+ Ke6 4.Kg5 Kf7 5.Bb2 Ke6 6.Bg7 Ke7
>7.Kxg6 h4 (74.227) 92.5
> 14.01	 0:01 	+3.40 	1.Bd2 Kf5 2.f4 Kf6 3.Bc3+ Ke6 4.Kg5 Kf7 5.Bb2 Ke6 6.Bg7 Ke7
>7.Kxg6 h4 (103.434) 95.5
> 15.01	 0:01 	+3.15-- 	1.Bd2 Kf5 2.f4 Ke4 3.Kg5 Kf3 4.Bc3 h4 5.Bf6 (169.924)
>124.3
> 15.01	 0:01 	+2.65-- 	1.Bd2 Kf5 2.Bc1 Kf6 3.Bf4 Kf5 4.Bc7 Kf6 5.f4 (191.339)
>133.6
> 15.01	 0:01 	+2.65 	1.Bd2 Kf7 2.Kg5 Kg8 3.Kxg6 h4 (194.757) 134.1
> 15.02	 0:01 	+2.68++ 	1.Bc1 Kf5 2.Bd2 Ke6 3.Kg5 Ke5 4.Kxg6 h4 (210.537) 126.6
> 15.02	 0:01 	+3.04++ 	1.Bc1 Kf5 2.Bd2 Ke6 3.Kg5 Ke5 4.Kxg6 h4 (212.294) 127.3
> 15.02	 0:01 	+3.16 	1.Bc1 Kf5 2.Bd2 Kf6 3.Bf4 Kf5 4.Bc7 Kf6 5.f4 (272.694)
>140.7
> 16.01	 0:02 	+3.16 	1.Bc1 Kf5 2.Bd2 Kf6 3.Bf4 Kf5 4.Bc7 Kf6 5.f4 (334.015)
>146.3
> 17.01	 0:02 	+3.16 	1.Bc1 Kf5 2.Bd2 Kf6 3.Bf4 Kf5 4.Bc7 Kf6 5.f4 (372.270)
>153.0
> 18.01	 0:02 	+3.16 	1.Bc1 Kf5 2.Bd2 Kf6 3.Bf4 Kf5 4.Bc7 Kf6 5.f4 (437.855)
>153.7
> 18.05	 0:03 	+3.17++ 	1.Bf4 Kf5 2.Bc7 Kf6 3.f4 Ke6 4.Kg5 Ke7 (561.546) 150.0
> 18.05	 0:03 	+3.52++ 	1.Bf4 Kf5 2.Bb8 Kf6 3.f4 Kf5 4.Be5 Ke6 5.Kg5 Kf7 6.Bc3 h4
>7.Kxh4 Ke6 (602.382) 153.1
> 18.05	 0:04 	+4.02 	1.Bf4 Kf5 2.Bb8 Kf6 3.f4 Kf5 4.Be5 Ke6 5.Kg5 Kf7 6.Bc3 Ke6
>7.Kxg6 h4 8.f5+ Kd5 9.Ba5 Kd6 10.f6 h3 (634.591) 151.7
> 19.01	 0:04 	+4.27++ 	1.Bf4 Kf5 2.Bb8 Kf6 3.f4 Kf5 4.Be5 Ke6 5.Kg5 Kd5 6.Kxg6
>h4 7.Bc7 h3 8.f5 Kd4 9.Kg5 Ke4 (695.704) 147.1
> 19.01	 0:04 	+4.29 	1.Bf4 Kf5 2.Bb8 Kf6 3.f4 Kf5 4.Be5 Ke6 5.Kg5 Kf7 6.Bc3 Ke8
>7.Kxg6 h4 8.f5 h3 9.Be5 Kd7 (721.430) 149.9
> 20.01	 0:05 	+4.55++ 	1.Bf4 Kf5 2.Bb8 Kf6 3.f4 Kf5 4.Be5 Ke6 5.Kg5 Kd5 6.Kxg6
>Ke4 (865.521) 149.6
> 20.01	 0:05 	+4.59 	1.Bf4 Kf5 2.Bb8 Kf6 3.f4 Kf5 4.Be5 Ke6 5.Kg5 Kf7 6.Bc3 Ke8
>7.Kxg6 h4 8.f5 Kd7 9.Be5 h3 (898.920) 151.7
> 21.01	 0:07 	+4.84++ 	1.Bf4 Kf5 2.Bb8 Kf6 3.f4 Kf5 4.Be5 Ke6 5.Kg5 Kf7 6.Bc3
>Ke8 7.Kxg6 h4 8.f5 Kd8 9.Be5 Kc8 (1.073.073) 150.8
> 21.01	 0:07 	+5.34++ 	1.Bf4 Kf5 2.Bb8 Ke6 3.Kg5 Kd5 4.Kxg6 h4 (1.110.600) 153.4
> 21.01	 0:10 	+7.81 	1.Bf4 Kf5 2.Bb8 Kf6 3.f4 Kf5 4.Be5 Ke6 5.Kg5 h4 6.Kxg6 h3
>7.Bb8 (2.200.382) 210.5
> 22.01	 0:14 	+8.06++ 	1.Bf4 Kf5 2.Bb8 Kf6 3.f4 Kf5 4.Be5 Ke6 5.Kg5 Kd5 6.Kxg6
>h4 7.Bb8 Ke6 8.Be5 Kd5 9.Bb8 (2.521.521) 170.6
> 22.01	 0:15 	+8.56++ 	1.Bf4 Ke6 2.Kg5 Kd5 3.Kxg6 h4 4.Bc7 Kd4 5.f4 Kc3
>(2.599.985) 173.1
> 22.01	 0:32 	+8.60 	1.Bf4 Ke6 2.Kg5 Kf7 3.Bc7 Kg7 4.f4 Kf7 5.Bb8 Ke8
>(8.466.820) 263.3
> 23.01	 0:39 	+8.35-- 	1.Bf4 Kf5 2.Bd2 Kf6 3.Bg5+ Ke5 4.Bd8 Kf5 5.Kg3 Ke5 6.f4+
>Kf5 7.Bb6 Ke4 8.Kh4 (10.386.684) 260.9
> 23.01	 0:40 	+7.85-- 	1.Bf4 Kf5 2.Bd2 Kf6 3.Bg5+ Ke5 4.Bd8 Kf5 5.Kg3 Ke5 6.f4+
>Kf5 7.Bb6 Ke4 8.Kh4 (10.681.076) 264.5
> 23.01	 1:03 	+2.95 	1.Bf4 Kf5 2.Bd2 Kf6 3.Be1 Kf5 4.Bg3 Kf6 5.Kh3 Kf5 6.Bf2 Kf4
>7.Kg2 h4 8.Bd4 (17.610.249) 277.6
> 24.01	 2:02 	+3.20++ 	1.Bf4 Kf5 2.Bb8 Ke6 3.Kg5 h4 4.Kxg6 h3 (38.581.429) 315.9
> 24.01	 2:02 	+3.70++ 	1.Bf4 Kf5 2.Bb8 Ke6 3.Kg5 h4 4.Kxg6 h3 5.Kh5 Kd7
>(38.755.820) 315.6
> 24.01	 2:25 	+8.60 	1.Bf4 Kf5 2.Bb8 Ke6 3.Kg5 Kf7 4.f4 Kg7 5.Be5+ Kf7 6.Bb2
>(47.071.330) 323.4
> 25.01	 2:55 	+8.85++ 	1.Bf4 Kf5 2.Bc7 Kf6 3.f4 Kf5 4.Be5 Ke6 5.Kg5 Kf7 6.Bb2
>Ke8 7.Kxg6 h4 8.Bd4 Kd7 9.f5 Kd6 10.f6 Ke6 (51.146.072) 291.3
> 25.01	 2:57 	+9.35++ 	1.Bf4 Kf5 2.Bc7 Kf6 3.f4 Kf5 4.Be5 Ke6 5.Kg5 Kf7 6.Bb2
>Ke8 7.Kxg6 h4 8.Bd4 Ke7 9.Bg1 Kd6 10.Kh5 Kc6 11.Bh2 Kb5 12.f5 Kb4 13.Bd6+ Kb5
>14.f6 (51.950.596) 292.6

I think that the KBP vs KP tablebases are missing(otherwise your programs could
probably see a forced mate).

Uri



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