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Subject: Re: Testposition endgame (from Ivanchuk - Ponomariov)

Author: Ernst Walet

Date: 02:14:14 01/20/02

Go up one level in this thread


On January 19, 2002 at 12:41:23, Eduard Nemeth wrote:

>In my analyses the game Ivanchuk - Ponomariov (4) today (end draw),
>I find a interesting endgame position:
>
>[D]8/p7/4p3/1k1pP2K/1bnP1P2/2B5/4N3/8 w - - 0 1
>
>white win with kg5! or Kg6! (Bxb4 is a blunder with draw).
>
>What plays your program now?
>
>4.Kg6!! +- [4.Bxb4 Kxb4 5.Kg6 a5 6.Kf6 a4 7.Kxe6 a3 8.Nc1 Kc3 9.Kxd5 Nb6+ =]
>
>Eduard

This is the analysis of Shredder6, thinking it is a win fir white.

Ernst.

New game
8/p7/4p3/1k1pP2K/1bnP1P2/2B5/4N3/8 w - - 0 1

Analysis by Shredder 6:

1.Bxb4 Kxb4
  µ  (-1.02)   Depth: 1/2   00:00:00
1.Kg5
  µ  (-0.91)   Depth: 1/2   00:00:00
1.Kg5
  µ  (-0.91)   Depth: 1/2   00:00:00
1.Kg5 a5
  µ  (-1.29)   Depth: 2/4   00:00:00
1.Kg5 a5
  µ  (-1.29)   Depth: 2/4   00:00:00
1.Bxb4 Kxb4 2.Kg5
  µ  (-1.17)   Depth: 2/4   00:00:00
1.Bxb4 Kxb4 2.Kg5
  µ  (-0.86)   Depth: 2/4   00:00:00
1.Bxb4 Kxb4 2.f5 exf5
  µ  (-1.32)   Depth: 3/6   00:00:00
1.Bxb4 Kxb4 2.f5 Nxe5 3.dxe5 exf5
  µ  (-1.22)   Depth: 3/6   00:00:00
1.Kg6 Ba3 2.f5 exf5
  µ  (-1.17)   Depth: 3/6   00:00:00
1.Kg6 Bxc3 2.Nxc3+ Kb4
  µ  (-0.83)   Depth: 3/6   00:00:00
1.Kg6 Bxc3 2.Nxc3+ Kb4 3.Nd1
  µ  (-0.94)   Depth: 4/8   00:00:00
1.Bxb4 Kxb4 2.f5 exf5 3.Kg6
  µ  (-0.93)   Depth: 4/8   00:00:00
1.Bxb4 Kxb4 2.f5 Nd6 3.exd6 exf5
  ³  (-0.44)   Depth: 4/8   00:00:00
1.Bxb4 Kxb4 2.f5 exf5 3.Kg5
  ³  (-0.39)   Depth: 4/8   00:00:00
1.f5 exf5 2.Kg5 f4 3.Kxf4
  ³  (-0.37)   Depth: 4/8   00:00:00
1.f5 exf5 2.Kg5 a5 3.Kxf5
  =  (-0.08)   Depth: 4/8   00:00:00
1.f5 Bxc3 2.Kg4 exf5+ 3.Kg5 Kb4 4.Nxc3
  ³  (-0.37)   Depth: 5/10   00:00:00
1.f5 Bxc3 2.Nxc3+ Kb4 3.Ne2 exf5 4.Kg5
  ³  (-0.39)   Depth: 5/10   00:00:00
1.Bxb4 Ka4
  ³  (-0.38)   Depth: 5/10   00:00:00
1.Bxb4 Kxb4 2.f5 exf5 3.Kg5 Ne3
  =  (-0.02)   Depth: 5/10   00:00:00
1.Bxb4 Kxb4 2.f5 exf5 3.Kg5 Ne3
  =  (-0.02)   Depth: 5/10   00:00:00
1.Bxb4 Kxb4 2.f5 exf5 3.Kg5 a5 4.Kxf5
  =  (0.03)   Depth: 6/12   00:00:00
1.Bxb4 Nb2 2.f5 Ka6
  ²  (0.28)   Depth: 7/14   00:00:00  11kN
1.Bxb4 Kxb4 2.Kg5 Nxe5 3.dxe5 Kc4
  ±  (0.78)   Depth: 7/14   00:00:00  13kN
1.Bxb4 Kxb4 2.Kg5 a5 3.Kf6 Ne3 4.Kxe6 a4
  +-  (1.56)   Depth: 7/14   00:00:00  16kN
1.Bxb4 Kxb4 2.Kg5 Ne3 3.Kf6 Kc4 4.Kxe6 Kd3 5.Ng3 Kxd4
  ±  (1.40)   Depth: 8/16   00:00:00  23kN
1.Bxb4 Kxb4 2.Kg5 Ne3 3.Kf6 Kc4 4.Kxe6 Kd3 5.Ng3 Kxd4
  ±  (1.40)   Depth: 9/18   00:00:00  34kN
1.Bxb4 Kxb4 2.Kg5 Ne3 3.Kf6 Kb5
  +-  (1.65)   Depth: 10/20   00:00:00  49kN
1.Bxb4 Kxb4 2.Kg5 Ne3 3.Kf6 Kc4 4.Kxe6 Kd3 5.Ng3 Kxd4 6.f5
  +-  (1.71)   Depth: 10/20   00:00:00  57kN
1.Bxb4 Kxb4 2.Kg5 Ne3 3.Kf6 Kc4 4.Kxe6 Kd3 5.Ng3 Kxd4 6.f5 Kc5
  +-  (1.76)   Depth: 11/22   00:00:00  144kN
1.Bxb4 Kxb4 2.Kg5 Ne3 3.Kf6 Kc4 4.Kxe6 Kd3 5.Nc1+ Kxd4 6.f5 Ke4 7.f6
  +-  (1.68)   Depth: 12/24   00:00:00  189kN, tb=1
1.Bxb4 Kxb4 2.Kg5 Ne3 3.Kf6 Kc4 4.Kxe6 Kd3 5.Nc1+ Ke4 6.Nb3 Kxf4 7.Kd6 Kf5
  +-  (1.86)   Depth: 13/25   00:00:01  299kN, tb=3
1.Bxb4 Kxb4 2.Kg5 Ne3 3.Kf6 Kc4 4.Kxe6 Kd3 5.f5 Kxe2 6.f6 Ng4 7.Kxd5 a6 8.f7
Nf6+ 9.exf6
  +-  (2.11)   Depth: 14/26   00:00:01  491kN, tb=15
1.Bxb4 Kxb4 2.Kg5 Ne3 3.Kf6 Kc4 4.Kxe6 Kd3 5.f5 a6 6.Ng3 a5 7.f6 Nf5 8.Kxf5
  +-  (2.61)   Depth: 14/26   00:00:02  641kN, tb=18
1.Bxb4 Kxb4 2.Kg5 a5 3.Kf6 Nd2 4.Kxe6 Kc4 5.f5 a4 6.f6 a3 7.f7 a2 8.f8Q a1Q
9.Kd6
  +-  (2.85)   Depth: 14/26   00:00:02  825kN, tb=20
1.Bxb4 Kxb4 2.Kg5 a5 3.Kf6 Nd2 4.Kxe6 Kc4 5.f5 a4 6.f6 a3 7.f7 a2 8.f8Q a1Q
9.Qc5+ Kd3
  +-  (2.64)   Depth: 15/27   00:00:03  1256kN, tb=50
1.Bxb4 Kxb4 2.Kg5 a5 3.Kf6 Nd2 4.Kxe6 Kc4 5.f5 a4 6.f6 a3 7.f7 Nf3
  +-  (2.89)   Depth: 16/28   00:00:06  2345kN, tb=459
1.Bxb4 Kxb4 2.Kg5 a5 3.Kf6 Nd2 4.Kxe6 Kc4 5.f5 a4 6.f6 a3 7.f7 a2 8.f8Q a1Q
9.Qc5+ Kd3 10.Nc1+ Ke4 11.Qxd5+
  +-  (3.39)   Depth: 16/28   00:00:08  2988kN, tb=511
1.Bxb4 Kxb4 2.Kg6 a5 3.Kf7 a4 4.Kxe6 a3 5.Nc1 Nd2 6.f5 Kc4 7.f6 Ne4 8.f7 Ng5+
9.Ke7 Nxf7 10.Kxf7
  +-  (4.59)   Depth: 16/28   00:00:16  6086kN, tb=5851
1.Bxb4 Kxb4 2.Kg6 a5 3.Kf7 Nd2 4.Kxe6 Kc4 5.f5 a4 6.f6 Ne4 7.f7 Ng5+ 8.Kf6 Nh7+
9.Kg7 Ng5 10.Nf4 Nxf7 11.Kxf7
  +-  (4.38)   Depth: 17/29   00:00:21  7863kN, tb=6310
1.Bxb4 Kxb4 2.Kg6 a5 3.Kf7 a4 4.Kxe6 a3 5.Nc1 Kc3 6.Kxd5 Nb6+ 7.Kd6 Kxd4 8.f5
Nd7 9.e6 Nf6 10.Nb3+ Kd3
  +-  (4.13)   Depth: 18/30   00:00:24  8984kN, tb=6859
1.Bxb4 Kxb4 2.Kg6 a5 3.Kf7 a4 4.Kxe6 a3 5.Nc1 Kc3 6.Kxd5 Nb6+ 7.Kd6 Kxd4 8.f5 a2
9.Nxa2 Nc4+ 10.Kc6
  +-  (3.63)   Depth: 18/30   00:00:24  9074kN, tb=6870
1.Bxb4 Kxb4 2.Kg6 a5 3.Kf7 a4 4.Kxe6 a3 5.Nc1 Kc3 6.Kxd5 Nb6+ 7.Ke4 Kc2 8.Na2
Kb3 9.e6 Nc8 10.Nc1+ Kb2
  +-  (3.52)   Depth: 18/30   00:00:27  10320kN, tb=7156
1.Bxb4 Kxb4 2.Kg6 a5 3.Kf7 a4 4.Kxe6 a3 5.Nc1 Kc3 6.Kxd5 Nb6+ 7.Ke4 Kc2 8.Na2
Kb2 9.Nb4 a2 10.Kd3
  +-  (3.27)   Depth: 19/31   00:00:40  14760kN, tb=10860
1.Bxb4 Kxb4 2.Kg6 a5 3.Kf7 a4 4.Kxe6 a3 5.Nc1 Kc3 6.Kxd5 Nb6+ 7.Ke4 Kb2 8.Na2
  +-  (2.77)   Depth: 19/31   00:00:41  15296kN, tb=13810
1.Bxb4 Kxb4 2.Kg6 a5 3.Kf7 a4 4.Kxe6 a3 5.Nc1 Kc3 6.Kxd5 Nb6+ 7.Kc6 Kb2 8.e6 Nc8
  +-  (1.46)   Depth: 19/31   00:00:49  18192kN, tb=16381
1.Kg5 Bxc3 2.Nxc3+ Kb4 3.f5 exf5 4.Nxd5+ Kb5 5.e6 a5 6.e7 Nd6 7.Kf4 Kc4 8.Nc7 a4
9.Ke5 a3 10.Kxd6 a2
  +-  (1.47)   Depth: 19/31   00:01:11  25668kN, tb=19414
1.Kg5 Bxc3 2.Nxc3+ Kb4 3.f5 exf5 4.Nxd5+ Kb5 5.e6 a5 6.e7 Nd6 7.Kf4 Kc4 8.Nc7
Kxd4 9.Nb5+ Kd3 10.Nxd6 Kc2 11.e8Q
  +-  (1.82)   Depth: 19/31   00:01:25  31029kN, tb=21400
1.Kg5 Ba3 2.Kf6 Ne3 3.Kxe6 Kc4 4.Ba5 Kd3 5.Nc3 Kc4 6.f5 Nc2 7.Ne2 Kd3 8.Ng3 Bb4
9.Bxb4 Na3
  +-  (2.23)   Depth: 19/31   00:02:19  49838kN, tb=34515
1.Kg5 Ba3 2.Kf6 Ne3 3.Kxe6 Kc4 4.Bd2 Nc2 5.f5 Kd3 6.Bc1 Bb4 7.Kxd5 Kxe2 8.f6 Bf8
9.e6 Nb4+ 10.Ke4 Nc6
  +-  (2.06)   Depth: 20/32   00:03:02  65505kN, tb=40088
1.Kg5 Be7+ 2.Kg6 Ba3 3.Kf7 Nd2
  +-  (2.06)   Depth: 21/33   00:04:24  95027kN, tb=49559
1.Kg6 Ba3 2.Kf7 Nd2
  +-  (2.07)   Depth: 21/33   00:04:43  102063kN, tb=54446
1.Kg6 a5 2.Kf6 Nd2 3.Bxd2 Bxd2 4.Kxe6 Kc4 5.Kf7 a4 6.e6 a3 7.e7 a2 8.f5 a1Q
9.e8Q Qb1 10.Qe5 Qb7+ 11.Kg6 Qc8
  +-  (2.33)   Depth: 21/33   00:05:41  123224kN, tb=70953
1.Kg6 a5 2.Kf6 Nd2 3.Kxe6 Kc4 4.f5 Bxc3 5.Nxc3 Kxd4 6.f6 Nf3 7.Ne2+ Ke4 8.Ng3+
Kd4 9.Kf5 Nh4+ 10.Kg5 Ng2 11.e6 a4
  +-  (2.58)   Depth: 22/34   00:07:51  171235kN, tb=118872
1.Kg6 Ba3 2.Kf7 Ne3 3.Kxe6 Kc4 4.Bd2 Nc2 5.f5 Kd3 6.Bc1 Bf8 7.Ng3 Kxd4 8.Kf7
Kxe5 9.Kxf8 a5 10.Bf4+ Kxf4 11.f6
  +-  (2.58)   Depth: 22/34   00:10:09  219162kN, tb=138639
1.Kg6 Ba3 2.Kf7 Ne3 3.Kxe6 Kc4 4.Bd2 Nc2 5.f5 Kd3 6.Bc1 Bb4 7.Kxd5 Kxe2 8.Ke4 a5
9.f6 a4 10.e6 Nxd4 11.Kxd4 Bc3+
  +-  (2.82)   Depth: 23/35   00:13:52  300491kN, tb=195738
1.Kg6 Ba3 2.Kf7 Ne3 3.Kxe6 Kc4 4.Bd2 Nc2 5.f5 Kd3 6.Bc1 Bb4 7.Kxd5 Kxe2 8.f6 Kd3
9.e6 Nxd4 10.e7
  +-  (3.07)   Depth: 24/36   00:22:59  491693kN, tb=536891
1.Kg6 Ba3 2.Kf7 Ne3 3.Kxe6 Kc4 4.Bd2 Nc2 5.f5 Kd3 6.Bc1 Bb4 7.Kxd5 Kxe2 8.f6 Kd3
9.e6 Nxd4 10.e7
  +-  (3.57)   Depth: 24/36   00:38:25  809622kN, tb=867800
1.Kg6 Ba3 2.Kf7 Ne3 3.Kxe6 Kc4 4.Bd2 Ng4 5.f5 Kd3 6.Bc1 Bxc1 7.Nxc1+ Kxd4 8.Nb3+
Ke4 9.Nc5+ Kd4 10.Nd7 Nf2 11.f6 Ne4 12.f7 Ng5+ 13.Ke7
  +-  (3.60)   Depth: 24/36   00:43:25  913382kN, tb=954069
1.Kg6 Ba3 2.Kf7 Ne3 3.Kxe6 Kc4 4.Bd2 Ng4 5.f5 Kd3 6.Bc1 Bf8 7.Nf4+ Kxd4 8.Nxd5
Ke4 9.Nc3+ Kd3 10.Nb5 a5 11.Ba3
  +-  (3.63)   Depth: 25/37   01:03:37  1318766kN, tb=1433072

(Celeron 1.2GHz, 832MB hash, 3 & 4 piece EGTB's 20.01.2002)



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