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

Author: Ernst Walet

Date: 01:22:05 12/30/00

Go up one level in this thread


I did some testing with this position with Crafty 17.14, Fritz6b, Hiarcs 7.32,
Junior6, Nimzo8 and Nimzo8 with tablebase depth at 12.  It seems to me that
Nimzo8 by default doesn't use the tablebases strongly enough.  All 3-4-5 men
tablebases where used.

Ernst.


New game - Fritz 6
8/8/5kp1/7p/7K/4BP2/8/8 w - - 0 1

Analysis by Crafty 17.14:

73.f4
  +-  (2.61)   Depth: 1/2   00:00:01
73.f4 Kf5
  +-  (2.56)   Depth: 2/3   00:00:01
73.f4 Kf5 74.Kg3
  +-  (2.52)   Depth: 3/6   00:00:01
73.f4 Kf5 74.Kg3 Kf6
  +-  (2.57)   Depth: 4/7   00:00:01
73.Bc5 Kf5 74.Bd6 Kf6
  +-  (2.61)   Depth: 4/7   00:00:01
73.Bc5 Kf5 74.Bd6 Kf6 75.f4
  +-  (2.70)   Depth: 5/9   00:00:01
73.Bc5 Kf5 74.Bd6 Ke6 75.Bf4 Kf5
  +-  (2.49)   Depth: 6/9   00:00:01  3kN, tb=18
73.Bg5+ Ke5 74.f4+ Kf5 75.Kg3 Ke6 76.Bh4 Kf5
  +-  (2.66)   Depth: 6/9   00:00:01  6kN, tb=19
73.Bg5+ Ke5 74.f4+ Kf5 75.Kh3 Ke6 76.Kg3 Kf5
  +-  (2.71)   Depth: 7/12   00:00:01  9kN, tb=32
73.Bg5+ Ke5 74.f4+ Kf5 75.Kh3 Ke6 76.Kg3 Kf5 77.Bh4 Ke4
  +-  (2.71)   Depth: 8/12   00:00:01  18kN, tb=119
73.Bg5+ Ke5 74.f4+ Kf5 75.Kh3 Ke6 76.Kg3 Kf5 77.Kf3 Ke6 78.Bh4
  +-  (2.83)   Depth: 9/14   00:00:02  33kN, tb=200
73.f4 Kf5 74.Bd2 Kf6 75.Bc3+ Kf5 76.Be5 g5+ 77.fxg5 Kxe5 78.Kxh5
  +-  (2.84)   Depth: 9/14   00:00:02  53kN, tb=612
73.f4 Kf5 74.Bd2 Kf6 75.Bc3+ Kf5 76.Be5 Ke6 77.Kg5 Kf7 78.Bf6
  +-  (3.07)   Depth: 10/16   00:00:02  57kN, tb=660
73.f4 Kf5 74.Bd2 Kf6 75.Bc3+ Kf5 76.Be5 Ke6 77.Kg5 Kf7 78.Bf6
  +-  (3.47)   Depth: 11/16   00:00:03  93kN, tb=827
73.f4 Kf5 74.Bd2 Kf6 75.Bc3+ Kf5 76.Be5 Ke6 77.Kg5 h4 78.Kxh4 Kf5
  +-  (4.21)   Depth: 11/16   00:00:03  98kN, tb=922
73.f4 Kf5 74.Bd2 Ke4 75.Kg5 Kf3 76.Be1 Ke4 77.Bg3 Kf3 78.Bh2 h4 79.Kxh4
  +-  (4.02)   Depth: 12/18   00:00:04  161kN, tb=1918
73.Bf4
  +-  (4.42)   Depth: 12/18   00:00:05  250kN, tb=2239
73.Bf4 Kf5 74.Bb8 Kf6 75.f4 Kf5 76.Be5
  +-  (4.56)   Depth: 12/18   00:00:05  253kN, tb=2257
73.Bf4 Kf5 74.Bb8 Kf6 75.f4 Kf5 76.Be5 Ke6 77.Kg5 Kf7 78.Bd4 h4 79.Kxh4
  +-  (4.56)   Depth: 13/19   00:00:05  267kN, tb=2563
73.Bf4 Kf5 74.Bb8 Kf6 75.f4 Kf5 76.Be5 Ke6 77.Kg5 Kf7 78.Bd4 h4 79.Kxh4
  +-  (4.96)   Depth: 14/20   00:00:06  369kN, tb=3807
73.Bf4 Kf5 74.Bb8 Kf6 75.f4 Kf5 76.Be5 Ke4 77.Kg5 h4 78.Kxh4
  +-  (#23)   Depth: 14/20   00:00:07  401kN, tb=4055
73.Bf4 Kf5 74.Bb8 Kf6 75.f4 Kf5 76.Be5 Ke4 77.Kg5 h4 78.Kxh4
  +-  (#23)   Depth: 15/21   00:00:08  608kN, tb=4947
73.Bf4 Kf5 74.Bb8 Kf6 75.f4 Kf5 76.Be5 Ke4 77.Kg5 h4 78.Kxh4
  +-  (#23)   Depth: 16/23   00:00:11  888kN, tb=7655
73.Bf4 Kf5 74.Bb8 Kf6 75.f4 Kf5 76.Be5 Ke4 77.Kg5 h4 78.Kxh4
  +-  (#23)   Depth: 17/24   00:00:15  1448kN, tb=10461
73.Bf4 Kf5 74.Bb8 Kf6 75.f4 Kf5 76.Be5 Ke4 77.Kg5 h4 78.Kxh4
  +-  (#23)   Depth: 18/25   00:00:22  2165kN, tb=16427
73.Bf4 Kf5 74.Bb8 Kf6 75.f4 Kf5 76.Be5 Ke4 77.Kg5 h4 78.Kxh4
  +-  (#23)   Depth: 19/28   00:00:30  3570kN, tb=20744

(Ernst, ChessTown 30.12.2000)

New game - Fritz 6
8/8/5kp1/7p/7K/4BP2/8/8 w - - 0 1

Analysis by Fritz 6:

73.f4
  +-  (2.19)   Depth: 1/2   00:00:00
73.f4 Kf5
  +-  (2.00)   Depth: 2/5   00:00:00
73.Bg5+!
  +-  (2.03)   Depth: 2/5   00:00:00
73.Bg5+! Kf5 74.f4
  +-  (2.06)   Depth: 2/5   00:00:00
73.Bg5+ Kf5 74.f4 Ke4
  +-  (2.06)   Depth: 3/6   00:00:00
73.Bg5+ Kf5 74.f4 Ke4
  +-  (2.06)   Depth: 4/8   00:00:00
73.Bg5+ Kf5 74.f4 Ke4
  +-  (2.06)   Depth: 5/7   00:00:00
73.Bg5+ Kf5 74.f4 Ke4
  +-  (2.06)   Depth: 6/7   00:00:00
73.Bg5+ Kf5 74.f4 Ke4 75.Kh3 Kf5 76.Kg3 Ke4
  +-  (1.94)   Depth: 7/13   00:00:00  2kN
73.Bg5+ Kf5 74.f4 Ke4 75.Kh3 Kf5 76.Kg3 Ke4 77.Bh4
  +-  (2.00)   Depth: 8/10   00:00:00  4kN, tb=2
73.Bg5+ Kf5 74.f4 Ke4 75.Kg3 Kd5 76.Kf3 Kd4 77.Bh4 Kd5
  +-  (2.19)   Depth: 9/13   00:00:00  6kN, tb=8
73.Bg5+ Kf5 74.f4 Ke4
  +-  (2.19)   Depth: 10/13   00:00:00  11kN, tb=27
73.Bg5+ Kf5 74.f4 Ke4
  +-  (2.19)   Depth: 11/14   00:00:00  18kN, tb=54
73.Bg5+ Kf5 74.f4 Ke4 75.Kg3 Kd5 76.Kf3 Kd4 77.Bh4 Kd3
  +-  (2.13)   Depth: 12/17   00:00:00  31kN, tb=105
73.Bg5+ Kf5 74.f4 Ke4 75.Kg3 Kd5 76.Kf3 Kd4 77.Bh4 Kd3
  +-  (2.13)   Depth: 13/16   00:00:00  48kN, tb=199
73.Bg5+ Kf5 74.f4 Ke4 75.Kg3 Kd5 76.Kf3 Kd4 77.Bh4 Kd3
  +-  (2.13)   Depth: 14/19   00:00:00  76kN, tb=410
73.Bg5+ Kf5 74.f4 Ke4 75.Kg3 Kd5 76.Kf3 Kd4 77.Bh4 Kd3
  +-  (2.13)   Depth: 15/19   00:00:00  129kN, tb=814
73.f4!
  +-  (2.16)   Depth: 15/19   00:00:00  139kN, tb=1001
73.Bb6!
  +-  (2.19)   Depth: 15/19   00:00:00  175kN, tb=1390
73.Bb6!
  +-  (2.50)   Depth: 16/19   00:00:00  200kN, tb=1606
73.Bb6!
  +-  (2.81)   Depth: 17/20   00:00:00  268kN, tb=2314
73.Bb6!
  +-  (3.13)   Depth: 18/22   00:00:01  372kN, tb=3406
73.Bb6!
  +-  (3.44)   Depth: 19/19   00:00:01  499kN, tb=4978
73.Bb6! Ke7 74.Kg5
  +-  (#35)   Depth: 19/24   00:00:09  1359kN, tb=13303

(Ernst, ChessTown 30.12.2000)

New game - Fritz 6
8/8/5kp1/7p/7K/4BP2/8/8 w - - 0 1

Analysis by Hiarcs 7.32:

73.f4
  +-  (2.63)   Depth: 1   00:00:00
73.f4 Kf5
  +-  (2.51)   Depth: 2/4   00:00:00
73.f4 Kf5 74.Bd2
  +-  (2.31)   Depth: 3/6   00:00:00
73.Bc5 Kf5 74.Bd6
  +-  (2.40)   Depth: 3/6   00:00:00
73.Bc5 Kf5 74.Bd6 Ke6
  +-  (2.54)   Depth: 4/7   00:00:00
73.Bf4 Kf5 74.Bc7 Kf6
  +-  (2.55)   Depth: 4/9   00:00:00
73.Bf4 Kf5 74.Bc7 Kf6 75.f4
  +-  (2.57)   Depth: 5/9   00:00:00  1kN, tb=1
73.f4 Kf5 74.Bd2 Kf6 75.Bb4
  +-  (2.64)   Depth: 5/12   00:00:00  1kN, tb=2
73.f4 Kf5 74.Kg3 Ke4 75.Bc5 Kf5
  +-  (2.55)   Depth: 6/12   00:00:00  3kN, tb=8
73.f4 Kf5 74.Kg3 Ke4 75.Bd2 Kf5 76.Kh4 Kf6
  +-  (2.47)   Depth: 7/12   00:00:00  5kN, tb=36
73.Bf4 Kf5 74.Bh6 Kf6 75.Be3 Kf5 76.Bd2 Kf6
  +-  (2.54)   Depth: 7/13   00:00:00  6kN, tb=52
73.Bf4 Kf5 74.Bc7 Kf6 75.f4 Kf5 76.Be5 Ke4
  +-  (2.63)   Depth: 8/16   00:00:01  13kN, tb=80
73.f4 Kf5
  +-  (2.85)   Depth: 8/16   00:00:01  14kN, tb=87
73.f4 Kf5 74.Bd2 Kf6 75.Bc3+ Kf5 76.Be5 Ke6 77.Kg5 Kf7
  +-  (3.00)   Depth: 8/16   00:00:01  14kN, tb=103
73.f4 Kf5 74.Bd2 Kf6 75.Bc3+ Kf5 76.Be5 Ke6 77.Kg5 Kf7
  +-  (3.00)   Depth: 9/16   00:00:01  22kN, tb=240
73.f4 Kf5
  +-  (3.25)   Depth: 10/17   00:00:01  36kN, tb=364
73.f4 Kf5 74.Bc1 Ke4 75.Kg5 Kf3 76.Bd2 Ke4 77.Kxg6 h4
  +-  (3.43)   Depth: 10/17   00:00:02  40kN, tb=434
73.Bf4 Kf5 74.Bc7 Kf6 75.f4 Kf5 76.Be5 Ke4
  +-  (3.87)   Depth: 10/17   00:00:02  48kN, tb=465
73.Bf4 Kf5 74.Bc7 Kf6 75.f4 Kf5 76.Be5 Ke4 77.Kg5 Kf3 78.Kxg6
  +-  (3.87)   Depth: 11/18   00:00:02  83kN, tb=785
73.Bf4 Kf5 74.Bc7 Kf6 75.f4 Kf5 76.Be5 Ke4 77.Kg5 Kd5 78.Bc7 Ke4 79.Kxg6
  +-  (3.80)   Depth: 12/22   00:00:04  183kN, tb=1499
73.f4 Kf5 74.Bd2 Ke4 75.Kg5 Kf3 76.Be1 Ke4 77.Bg3 Kf3 78.Bh2 h4 79.Kxh4
  +-  (3.80)   Depth: 12/23   00:00:04  195kN, tb=1803
73.f4 Kf5 74.Bd2 Ke4 75.Kg5 Kf3 76.Be1 Ke4 77.Bg3 Kf3 78.Bh2 h4 79.Kxh4
  +-  (3.80)   Depth: 13/23   00:00:06  278kN, tb=3200
73.Bf4 Kf5
  +-  (4.19)   Depth: 13/23   00:00:06  279kN, tb=3205
73.Bf4 Kf5 74.Bc7 Kf6 75.f4 Kf7 76.Kg5 Kg7 77.Bd8 Kf7 78.Bb6 Ke7 79.Be3
  +-  (#25)   Depth: 13/23   00:00:06  279kN, tb=3205
73.Bf4 Kf5 74.Bc7 Kf6 75.f4 Kf5 76.Be5 Ke4 77.Kg5 h4 78.Kxh4
  +-  (#23)   Depth: 13/23   00:00:06  315kN, tb=3450

(Ernst, ChessTown 30.12.2000)

New game - Fritz 6
8/8/5kp1/7p/7K/4BP2/8/8 w - - 0 1

Analysis by Junior 6.0:

73.f4 Kf5
  +-  (2.25)   Depth: 3   00:00:00
73.f4 Kf5 74.Kg3
  +-  (2.18)   Depth: 6   00:00:00
73.Bg1 Kf5 74.Bd4
  +-  (2.20)   Depth: 6   00:00:00
73.Bc1 Kf5 74.Bg5
  +-  (2.22)   Depth: 6   00:00:00
73.Bg5+ Kf5 74.Bc1 Kf6 75.Bf4
  +-  (2.25)   Depth: 6   00:00:00  1kN
73.Bf4 Kf5 74.Bg5 Ke5
  +-  (2.36)   Depth: 6   00:00:00  1kN
73.Bf4 Kf5 74.Bg5 Ke5 75.Kg3 Kf5
  +-  (2.29)   Depth: 9   00:00:00  2kN, tb=15
73.Bf4 Kf5 74.Bg5 Ke5 75.Kg3 Kf5 76.Be3 g5
  +-  (2.23)   Depth: 12   00:00:00  9kN, tb=57
73.Bg5+ Ke5 74.f4+ Kf5 75.Kg3 Ke4 76.Bd8 Kf5 77.Bh4
  +-  (2.33)   Depth: 12   00:00:00  19kN, tb=137
73.Bg5+ Ke5 74.f4+ Kf5 75.Kg3 Ke4 76.Bd8 Kf5 77.Be7 Ke4 78.Bh4
  +-  (2.33)   Depth: 15   00:00:01  49kN, tb=316
73.Bg5+ Ke5 74.f4+ Kf5 75.Kg3 Ke4 76.Bd8 Kf5 77.Be7 Ke4 78.Bh4 Kd5
  +-  (2.33)   Depth: 18   00:00:02  108kN, tb=977
73.Bg5+ Ke5 74.f4+ Ke4 75.Kg3 Kd3 76.Kf3 Kc3
  +-  (2.39)   Depth: 21   00:00:08  504kN, tb=4599
73.Bg5+ Ke5 74.f4+ Ke4 75.Kg3 Kd3 76.Kf2 Ke4 77.Kg2 Kd4 78.Kg3
  +-  (2.39)   Depth: 23   00:00:11  848kN, tb=7782
73.Bg5+ Ke5 74.f4+ Ke4 75.Kg3 Kd3 76.Kf2 Ke4 77.Kg2 Kd4 78.Kg3
  +-  (2.39)   Depth: 25   00:00:16  1335kN, tb=12992
73.Bf4!
  +-  (2.69)   Depth: 25   00:00:17  1438kN, tb=13911
73.Bf4!
  +-  (2.99)   Depth: 27   00:00:19  1590kN, tb=16119
73.Bf4!
  +-  (3.29)   Depth: 29   00:00:24  2171kN, tb=24096
73.Bf4! Kf5 74.Bb8 Kf6 75.f4 Kf5 76.Be5 Ke4 77.Kg5 h4 78.Kxh4
  +-  (#18)   Depth: 29   00:00:27  2330kN, tb=26543
73.Bf4! Kf5 74.Bb8 Kf6 75.f4 Kf5 76.Be5 Ke4 77.Kg5 h4 78.Kxh4
  +-  (#18)   Depth: 29   00:00:34  3046kN, tb=36704

(Ernst, ChessTown 30.12.2000)

New game - Fritz 6
8/8/5kp1/7p/7K/4BP2/8/8 w - - 0 1

Analysis by Nimzo 8:

73.f4
  +-  (3.42)   Depth: 1/11   00:00:00
73.f4 Kf5 74.Bd2
  +-  (3.38)   Depth: 3/14   00:00:00
73.Bh6
  +-  (3.45)   Depth: 3/14   00:00:00
73.Bh6 Kf5 74.f4
  +-  (3.45)   Depth: 3/14   00:00:00
73.Bh6 Kf5 74.Bg5 Ke5 75.f4+ Kf5
  +-  (3.54)   Depth: 5/17   00:00:00
73.Bh6 Kf5 74.Bd2 Kf6 75.f4 Kf5
  +-  (3.40)   Depth: 6/19   00:00:00
73.Bc1
  +-  (3.45)   Depth: 6/19   00:00:01
73.Bc1 Kf5 74.Bb2
  +-  (3.44)   Depth: 6/19   00:00:01
73.Bc1 Kf5 74.Bg5 Ke6 75.Bh6 Kf6 76.f4
  +-  (3.45)   Depth: 7/20   00:00:01
73.Bc1 Kf5 74.Bg5 Ke6 75.Bh6 Kf6 76.f4 Kf5
  +-  (3.45)   Depth: 8/22   00:00:01
73.Bc1 Kf5 74.f4 Kf6 75.Ba3 Kf5 76.Bd6 Kf6 77.Be5+ Kf5
  +-  (3.51)   Depth: 9/23   00:00:01
73.Bc1 Kf5 74.f4 Kf6 75.Ba3 Kf5 76.Bd6 Kf6 77.Be5+ Kf5 78.Bc7
  +-  (3.42)   Depth: 10/25   00:00:01  35kN, tb=744
73.f4
  +-  (3.43)   Depth: 10/25   00:00:01  35kN, tb=744
73.f4 Kf5 74.Bd2 Kf6 75.Ba5 Kf5 76.Bc7 Ke6 77.Be5 Kf5
  +-  (3.49)   Depth: 10/25   00:00:01  35kN, tb=744
73.f4 Kf5 74.Bd2 Kf6 75.Ba5 Kf5 76.Bc7 Kf6 77.Bd8+ Kf5
  +-  (3.49)   Depth: 11/26   00:00:02  35kN, tb=744
73.f4 Kf5 74.Bd2 Kf6 75.Ba5 Kf5 76.Bc7 Kf6 77.Bb8 Kf5 78.Bd6
  +-  (3.45)   Depth: 12/28   00:00:02  265kN, tb=2419
73.Bc1
  +-  (3.46)   Depth: 12/28   00:00:02  265kN, tb=2419
73.Bc1 Kf5 74.Bh6 Kf6 75.Be3 Kf5 76.Bg5 Ke6 77.Be7
  +-  (3.46)   Depth: 12/28   00:00:02  265kN, tb=2419
73.Bc1 Kf5 74.Bd2 Kf6 75.f4 Kf5 76.Bc3
  +-  (3.45)   Depth: 13/29   00:00:03  734kN, tb=3530
73.Bc1 Kf5 74.Bd2 Kf6 75.Bb4 Kf5 76.Bd6 Kf6
  +-  (3.45)   Depth: 14/31   00:00:04  1234kN, tb=4618
73.Bc1 Kf5 74.Bd2 Kf6 75.f4 Kf5 76.Be3 Kf6 77.Bc5 Kf5 78.Bd6
  +-  (3.45)   Depth: 15/32   00:00:06  2256kN, tb=5084
73.Bc1 Kf5 74.f4 Kf6 75.Bb2+ Kf5 76.Be5 g5+ 77.fxg5 Kxe5 78.Kxh5
  +-  (3.55)   Depth: 16/34   00:00:09  3808kN, tb=5697
73.Bc1 Kf5 74.f4 Kf6 75.Bb2+ Kf5 76.Be5 g5+ 77.fxg5 Kxe5 78.Kxh5
  +-  (3.60)   Depth: 17/35   00:00:14  6340kN, tb=6273
73.Bc1 Kf5 74.f4 Ke4 75.Kg5 Kf3 76.Bd2 Ke4 77.Be1 Kf3 78.Bh4
  +-  (3.84)   Depth: 18/37   00:00:28  13792kN, tb=6912
73.f4
  +-  (3.85)   Depth: 18/37   00:00:37  18590kN, tb=7204
73.f4 Kf5 74.Bd2 Ke4 75.Kg5 Kf3 76.Be1 Ke4 77.Bg3 Kf3 78.Bh2
  +-  (4.44)   Depth: 18/37   00:00:39  19622kN, tb=7274
73.Bb6
  +-  (4.45)   Depth: 18/37   00:00:42  20668kN, tb=7343
73.Bb6 Kf5 74.Bc7 Kf6 75.f4 Kf5 76.Be5 Ke6 77.Kg5 Kf7 78.Bb2
  +-  (4.73)   Depth: 18/37   00:00:46  22760kN, tb=7414
73.Bb6 Kf5 74.Bc7 Kf6 75.f4 Kf5 76.Be5 Ke6 77.Kg5 Kf7 78.Bc3
  +-  (4.74)   Depth: 19/38   00:01:02  31303kN, tb=7768
73.f4
  +-  (4.75)   Depth: 19/38   00:01:17  39353kN, tb=8000
73.f4 Kf5 74.Bd2 Ke4 75.Kg5 Kf3 76.Be1 Ke3 77.Bg3 Ke4 78.Kxg6
  +-  (5.34)   Depth: 19/38   00:01:22  42087kN, tb=8092
73.f4 Kf5 74.Bd2 Kf6 75.Bc3+ Kf5 76.Be5 Ke6 77.Kg5 Kf7 78.Bd4
  +-  (5.58)   Depth: 20/40   00:02:03  64937kN, tb=8586
73.Bb6
  +-  (5.59)   Depth: 20/40   00:02:13  69778kN, tb=8677
73.Bb6 Kf5 74.Bc7 Kf6 75.f4 Kf5 76.Be5 Ke6 77.Kg5 h4 78.Kxh4
  +-  (5.59)   Depth: 20/40   00:02:18  73064kN, tb=8697
73.Ba7
  +-  (5.60)   Depth: 20/40   00:02:51  91162kN, tb=9067
73.Ba7 Kf5 74.Bb8 Kf6 75.f4 Ke7 76.Be5 Kf7 77.Kg5 Ke6 78.Kxg6
  +-  (6.05)   Depth: 20/40   00:03:05  98836kN, tb=9125
73.Ba7 Kf5 74.Bb8 Kf6 75.f4 Ke7 76.Be5 Kf7 77.Kg5 Ke6 78.Kxg6
  +-  (6.29)   Depth: 21/41   00:04:02  130373kN, tb=9403
73.Bb6
  +-  (6.30)   Depth: 21/41   00:04:30  146157kN, tb=9477
73.Bb6 Kf5 74.Bc7 Kf6 75.f4 Kf5 76.Be5 Ke6 77.Kg5 h4 78.Kxh4
  +-  (6.30)   Depth: 21/41   00:04:37  150057kN, tb=9492

(Ernst, ChessTown 30.12.2000)

New game - Fritz 6
8/8/5kp1/7p/7K/4BP2/8/8 w - - 0 1

Analysis by Nimzo 8:

73.f4
  +-  (3.42)   Depth: 1/11   00:00:00  2kN
73.f4 Kf5 74.Bd2
  +-  (3.38)   Depth: 3/14   00:00:00  2kN
73.Bh6
  +-  (3.45)   Depth: 3/14   00:00:00  2kN
73.Bh6 Kf5 74.f4
  +-  (3.45)   Depth: 3/14   00:00:00  2kN
73.Bh6 Kf5 74.Bg5 Ke5 75.f4+ Kf5
  +-  (3.54)   Depth: 5/17   00:00:00  2kN
73.Bh6 Kf5 74.Bd2 Kf6 75.f4 Kf5
  +-  (3.40)   Depth: 6/19   00:00:00  2kN
73.Bc1
  +-  (3.45)   Depth: 6/19   00:00:00  2kN
73.Bc1 Kf5 74.Bb2
  +-  (3.44)   Depth: 6/19   00:00:00  2kN
73.Bc1 Kf5 74.Bg5 Ke6 75.Bh6 Kf5 76.f4
  +-  (3.45)   Depth: 7/20   00:00:00  2kN
73.f4
  +-  (3.46)   Depth: 7/20   00:00:00  2kN
73.f4 Kf5 74.Bd2 Ke4 75.Kg5 Kf3 76.Kh4
  +-  (3.46)   Depth: 7/20   00:00:00  2kN
73.f4 Kf5 74.Bd2 Kf6 75.Bc3+ Kf5 76.Be5 Ke4 77.Bd6
  +-  (3.49)   Depth: 8/22   00:00:00  2kN
73.f4 Kf5 74.Bd2 Ke4 75.Kg5 Kf3 76.Bc1 Ke4 77.Kh4
  +-  (3.42)   Depth: 9/23   00:00:00  2kN
73.Bh6
  +-  (3.43)   Depth: 9/23   00:00:00  2kN
73.Bh6 Kf5 74.Bd2 Kf6 75.Bc1 Kf5 76.Bh6 Kf6 77.f4
  +-  (3.45)   Depth: 9/23   00:00:00  2kN
73.Bb6
  +-  (3.46)   Depth: 9/23   00:00:00  2kN
73.Bb6 Kf5 74.Bc7 Kf6 75.f4 Kf5 76.Bd6 Kf6 77.Be5+ Kf5
  +-  (3.51)   Depth: 9/23   00:00:00  2kN
73.Bb6 Kf5 74.Bc7 Kf6 75.f4 Kf5 76.Bd6 Kf6 77.Bb4
  +-  (3.51)   Depth: 10/25   00:00:00  2kN
73.Bf4
  +-  (3.52)   Depth: 10/25   00:00:01  83kN, tb=4840
73.Bf4 Kf5 74.Bb8 Kf6 75.f4 Kf5 76.Be5 Ke6 77.Bd4 Kd6
  +-  (3.55)   Depth: 10/25   00:00:01  83kN, tb=4840
73.Bf4 Kf5 74.Bb8 Kf6 75.f4 Kf5 76.Be5 Ke6 77.Kg5 Kf7 78.Kh4
  +-  (3.66)   Depth: 11/26   00:00:01  83kN, tb=4840
73.Bf4
  +-  (3.91)   Depth: 12/28   00:00:01  83kN, tb=4840
73.Bf4
  +-  (4.51)   Depth: 12/28   00:00:01  83kN, tb=4840
73.Bf4
  +-  (6.91)   Depth: 12/28   00:00:01  83kN, tb=4840
73.Bf4 Kf5 74.Bb8 Kf6 75.f4 Kf5 76.Be5 Ke6 77.Kg5 Kf7 78.Bc7
  +-  (#22)   Depth: 12/28   00:00:01  83kN, tb=4840
73.Bf4 Kf5 74.Bb8 Kf6 75.Bh2 Kf5 76.Bc7 Ke6 77.Kg5 Kf7
  +-  (#25)   Depth: 13/29   00:00:05  842kN, tb=21231
73.Bf4 Ke7 74.Kg5 Kf7
  +-  (#28)   Depth: 14/31   00:00:14  4918kN, tb=35418
73.Bf4 Kf7 74.Bb8 Kg7
  +-  (#26)   Depth: 15/32   00:00:28  11589kN, tb=50701
73.Ba7
  +-  (#13)   Depth: 15/32   00:00:39  17130kN, tb=56883
73.Ba7 Kf5 74.Bb8 Kf6
  +-  (#25)   Depth: 15/32   00:00:39  17130kN, tb=56883
73.Ba7 Kf5 74.Bb8 Kf6 75.f4 Kf7 76.Kg5 Kg7
  +-  (#23)   Depth: 16/34   00:00:42  18599kN, tb=59484
73.Ba7
  +-  (#14)   Depth: 17/35   00:02:51  96484kN, tb=68396
73.Ba7 Kf5 74.Bb8 Kf6
  +-  (#28)   Depth: 17/35   00:02:52  97130kN, tb=68486

(Ernst, ChessTown 30.12.2000)


On December 29, 2000 at 18:19:58, Alexander Kure wrote:

>Hi everybody,
>
>In the currently running Wels (Austria) tournament held by Mr. Wiesenecker in
>the game Nimzo 8 vs. SOS an interesting position showed up.
>
>[D]8/8/5kp1/7p/7K/4BP2/8/8 w - - 0 72
>
>In this position Nimzo 8 played 73.f4?? and despite a +10.00 evaluation at moves
>75 and 76 the score immediately dropped to 0 in the following moves!
>
>The following idea would have won easily:
>73.Bb6 Kf5 74.Bc7 Kf6 75.f4 {only now!} Kf5
>76.Be5 {controlling f6} Ke6
>{76...Ke4 77.Kg5 Kf3 78.Kxg6 h4 79.f5 game over}
>77.Kg5 Kf7 78.Bd4 {winning}
>
>Qustion: which engines avoid 73.f4?? and see the winning idea?
>
>Greetings
>Alex
>
>[Event "60"av/PIII-1GHz"]
>[Site "Wels"]
>[Date "2000.12.28"]
>[Round "1"]
>[White "Nimzo 8"]
>[Black "SOS"]
>[Result "1/2-1/2"]
>[ECO "C92"]
>[Annotator "0.74"]
>[PlyCount "176"]
>[EventDate "2000.12.28"]
>
>{128MB, Nimzo8.ctg. PIII-1GHz } 1. e4 {1} 1... e5 {2} 2. Nf3 {1} 2...
>Nc6 {1} 3. Bb5 {0} 3... a6 {1} 4. Ba4 {0} 4... Nf6 {2} 5. O-O {0} 5...
>Be7 {2} 6. Re1 { 0} 6... b5 {2} 7. Bb3 {0} 7... d6 {2} 8. c3 {0} 8...
>O-O {2} 9. h3 {0} 9... Na5 {2} 10. Bc2 {0} 10... Bb7 {2} 11. d4 {0}
>11... Nc4 {2} 12. b3 {0} 12... Nb6 {1} 13. Nbd2 {0} 13... Nfd7 {2} 14.
>Nf1 {0} 14... c5 {1} 15. Ne3 {0} 15... g6 {2} 16. a4 {0} 16... bxa4 {2}
>17. bxa4 {0} 17... a5 {2} 18. Rb1 {0} 18... Qc7 {2} 19. dxe5 {0} 19...
>Nxe5 {letzter Buchzug 420} 20. Nxe5 {0.74/11 69} 20... dxe5 {83} 21. c4
>{0.56/11 0} 21... Ba6 {97} 22. Bb3 {0.68/12 1} 22... Rfb8 {54} 23. Bb2
>{0.95/11 66} 23... f6 {45} 24. Bc3 {1.38/11 33} 24... Bb7 {57} 25. Nd5 {
>1.41/10 15} 25... Nxd5 {68} 26. exd5 {1.39/12 0} 26... Bd6 {122} 27. Qd2
>{ 1.30/13 0} 27... Bc8 {60} 28. Bc2 {1.34/12 0} 28... Rxb1 {73} 29. Rxb1
>{ 1.87/11 23} 29... Bd7 {131} 30. Qh6 {1.35/13 1} 30... Bf8 {40} 31. Qh4
>{ 1.45/10 22} 31... Bg7 {53} 32. Qe4 {1.50/11 44} 32... Qc8 {62} 33. Qe1
>{ 1.47/11 7} 33... Qa6 {85} 34. Bd3 {1.26/12 20} 34... Qc8 {136} 35. Ra1
>{ 1.38/10 21} 35... Qc7 {46} 36. Ra2 {1.25/12 122} 36... f5 {155} 37. f3
>{ 1.19/13 1} 37... Qd6 {94} 38. Kh1 {1.09/11 45} 38... Ra7 {29} 39. Bxa5
>{ 1.30/12 134} 39... e4 {16} 40. fxe4 {1.34/13 99} 40... fxe4 {16} 41.
>Bxe4 { 1.34/11 11} 41... Qa6 {64} 42. Bd2 {1.41/13 1} 42... Qxc4 {163}
>43. Rc2 { 1.49/13 0} 43... Qxa4 {55} 44. Rxc5 {1.46/11 1} 44... Qd4 {53}
>45. Rc1 { 1.37/11 1} 45... Ra4 {141} 46. Bf3 {1.33/12 1} 46... Ra3 {71}
>47. Rd1 { 1.39/10 5} 47... Rxf3 {50} 48. gxf3 {0.93/11 1} 48... Qxd5
>{158} 49. Qe3 { 0.79/12 0} 49... Qf5 {50} 50. Kg1 {0.69/12 145} 50...
>Qxh3 {77} 51. Be1 { 0.61/11 1} 51... h5 {78} 52. Qa7 {0.69/10 33} 52...
>Be6 {43} 53. Rd8+ { 0.78/11 0} 53... Kh7 {158} 54. Rd3 {0.75/13 1} 54...
>Bf5 {343} 55. Rc3 { 1.63/12 28} 55... Kh8 {32} 56. Qa8+ {2.85/12 87}
>56... Kh7 {1} 57. Rc7 { 2.80/12 107} 57... Bd3 {1} 58. Rxg7+ {2.95/11
>32} 58... Kxg7 {51} 59. Bc3+ { 2.80/12 1} 59... Kf7 {63} 60. Qd5+
>{2.83/11 0} 60... Ke7 {32} 61. Qxd3 { 2.94/11 74} 61... Qg3+ {46} 62.
>Kf1 {2.89/12 0} 62... Qh3+ {44} 63. Ke2 { 2.89/11 0} 63... Qg2+ {117}
>64. Ke3 {3.00/10 19} 64... Qg5+ {330} 65. Kf2 { 3.24/13 1} 65... Qh4+
>{79} 66. Kg2 {3.32/13 0} 66... Qg5+ {52} 67. Kh3 { 3.31/12 1} 67... Qf4
>{45} 68. Bd2 {3.35/11 0} 68... Qf6 {20} 69. Qd5 { 3.39/12 63} 69... Qe6+
>{19} 70. Qxe6+ {3.43/16 36} 70... Kxe6 {38} 71. Kh4 { 4.79/19 23} 71...
>Kf5 {94} 72. Be3 {4.73/18 15} 72... Kf6 {7} 73. f4 { 5.62/19 39} 73...
>Kf5 {21} 74. Bd2 {6.34/19 0} 74... Ke4 {29} 75. Kg5 { 10.33/19 21} 75...
>Kf3 {19} 76. Be1 {10.32/18 80} 76... Ke4 {15} 77. Bc3 { 0.50/18 99}
>77... h4 {20} 78. Be1 {0.00/19 35} 78... h3 {15} 79. Bg3 { 0.00/21 30}
>79... Kf3 {20} 80. Kh4 {0.00/22 43} 80... Kg2 {7} 81. Kg4 { 0.00/21 11}
>81... h2 {32} 82. Bxh2 {0.00/22 55} 82... Kxh2 {1} 83. Kf3 { 0.00/1 0}
>83... Kg1 {2} 84. Ke2 {0.00/1 0} 84... Kh2 {2} 85. Kd3 {0.00/1 0} 85...
>Kg1 {2} 86. Ke2 {0.00/1 0} 86... Kh2 {2} 87. Kd3 {0.00/1 0} 87... Kg1
>{2} 88. Ke2 {0.00/1 0} 88... Kh2 {4} 1/2-1/2



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