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Subject: Can white win?

Author: Uri Blass

Date: 13:50:13 01/17/04

Here is a position that happened in the Israeli league.
The question is if white can win.

Some analysis by yace shows an impressive depth and increase in score.
Maybe somebody with better hardware and more tablebases can analyze it and
decide if white wins.


New game
8/8/5pk1/5b2/7K/3R3p/7P/8 w - - 0 1

Analysis by Yace Paderborn:

1.Rg3+ Kf7 2.Re3 Kg6 3.Re7
  ²  (0.43)   Depth: 1   00:00:00
1.Rg3+ Kf7 2.Re3 Kg6 3.Re7
  ²  (0.43)   Depth: 1   00:00:00
1.Rg3+ Kf7 2.Re3 Kg6 3.Re7
  ²  (0.43)   Depth: 1   00:00:00
1.Rg3+ Kf7 2.Re3 Kg6 3.Re7
  ²  (0.43)   Depth: 1   00:00:00
1.Rg3+ Kf7 2.Re3 Kg6 3.Re7
  ²  (0.43)   Depth: 4   00:00:00
1.Rg3+ Kf7 2.Re3 Kg6 3.Re7
  ²  (0.43)   Depth: 4   00:00:00
1.Rg3+ Kf7 2.Re3 Kg6 3.Re7
  ²  (0.43)   Depth: 4   00:00:00
1.Rg3+ Kf7 2.Re3 Kg6 3.Re7
  ²  (0.43)   Depth: 4   00:00:00
1.Rg3+ Kf7 2.Re3 Kg6 3.Re7
  ²  (0.43)   Depth: 4   00:00:00
1.Rg3+ Kf7 2.Re3 Kg6 3.Re7
  ²  (0.43)   Depth: 4   00:00:00
1.Rg3+ Kf7 2.Re3 Kg6 3.Re7
  ²  (0.43)   Depth: 4   00:00:00
1.Rg3+ Kf7 2.Re3 Kg6 3.Re7
  ²  (0.43)   Depth: 4   00:00:00
1.Rg3+ Kf7 2.Re3 Kg6 3.Re7
  ²  (0.43)   Depth: 4   00:00:00
1.Rd6 Bc2
  ²  (0.45)   Depth: 4   00:00:00
1.Rd6 Kf7 2.Kg3 Kg6
  ²  (0.46)   Depth: 4   00:00:00
1.Rd6 Kf7 2.Kg3 Kg6
  ²  (0.46)   Depth: 4   00:00:00
1.Rd6 Kf7 2.Kg3 Ke7 3.Rd5
  ²  (0.46)   Depth: 5   00:00:00
1.Rd1 Bc2 2.Rg1+ Kf7
  ²  (0.48)   Depth: 5   00:00:00
1.Rd1 Kf7 2.Re1 Kg6 3.Rg1+ Kf7
  ²  (0.46)   Depth: 5   00:00:00
1.Rd6 Kf7 2.Kg3 Ke7 3.Rd5
  ²  (0.46)   Depth: 5   00:00:00
1.Rd6 Kf7 2.Kg3 Ke7 3.Rd5
  ²  (0.46)   Depth: 5   00:00:00
1.Rd6 Kf7 2.Kg3 Ke7 3.Rd5 Ke6
  ²  (0.46)   Depth: 6/9   00:00:00  3kN
1.Rd1 Kf7 2.Re1 Kg6 3.Rf1 Be6 4.Kg3
  ²  (0.47)   Depth: 6/9   00:00:00  4kN
1.Rd1 Kf7 2.Kg3 Kg7 3.Kf4 Kg6
  ²  (0.56)   Depth: 6/9   00:00:00  6kN
1.Rd1 Kf7 2.Kg3 Kg7 3.Kf4 Kg6
  ²  (0.56)   Depth: 6/9   00:00:00  7kN
1.Rd1 Be6 2.Kg3 Kg5 3.Rg1 Bd7 4.Kf3+ Kf5
  ²  (0.55)   Depth: 7/9   00:00:00  14kN
1.Rd8 Be6 2.Kg3 Kf7 3.Kf4 Kg6
  ²  (0.56)   Depth: 7/9   00:00:00  18kN
1.Rd8 Kf7 2.Kg3 Ke7 3.Rd1 Ke6 4.Kf4 Bc2 5.Rd2
  ²  (0.56)   Depth: 7/9   00:00:00  20kN
1.Rd8 Kf7 2.Kg3 Ke7 3.Rd1 Ke6 4.Kf4 Bc2 5.Rd2
  ²  (0.56)   Depth: 7/13   00:00:00  20kN
1.Rd8 Kf7 2.Kg3 Ke7 3.Rd1 Ke6 4.Kf4 Bc2 5.Rd2
  ²  (0.56)   Depth: 8/13   00:00:00  25kN
1.Rd8 Kf7 2.Kg3 Ke7 3.Rd1 Ke6 4.Kf4 Bc2 5.Rd2
  ²  (0.56)   Depth: 8/13   00:00:00  29kN
1.Rd8 Kf7 2.Kg3 Ke7 3.Rd2 Ke6 4.Kf4 Bg6 5.Rd8
  ²  (0.59)   Depth: 9/13   00:00:00  38kN
1.Rd8 Kf7 2.Kg3 Ke7 3.Rd2 Ke6 4.Kf4 Bg6 5.Rd8
  ²  (0.59)   Depth: 9/13   00:00:00  44kN
1.Rd8 Kf7 2.Kg3 Ke7 3.Rd2 Ke6 4.Kf4 Bg6 5.Rd8 Bc2
  ²  (0.59)   Depth: 10/13   00:00:00  58kN
1.Rd1 Kf7 2.Kg3 Ke6 3.Kf4 Bc2 4.Re1+ Kd6 5.Kg4 Bb1
  ²  (0.60)   Depth: 10/13   00:00:00  72kN
1.Rd1 Be6 2.Kg3 Kg5 3.Rd8 Bf5 4.Rg8+ Kh6 5.Kf4 Bd3 6.Rf8
  ²  (0.65)   Depth: 10/13   00:00:00  125kN
1.Rd1 Be6 2.Kg3 Kg5 3.Rd8 Bf5 4.Rg8+ Kh6 5.Kf4 Bd3 6.Rf8
  ²  (0.65)   Depth: 10/16   00:00:01  152kN
1.Rd1 Be6 2.Kg3 Kf7 3.Kf4 Ke7 4.Ke4 Bc4 5.Rc1 Be2 6.Re1
  ²  (0.70)   Depth: 11/16   00:00:01  228kN
1.Rd1 Be6 2.Kg3 Kf7 3.Kf4 Ke7 4.Ke4 Bc4 5.Rc1 Be2 6.Re1
  ²  (0.70)   Depth: 11/17   00:00:01  254kN
1.Rd1 Kf7 2.Kg3 Ke7 3.Kf4 Bc8 4.Re1+ Be6
  ²  (0.69)   Depth: 12/17   00:00:02  370kN
1.Rg3+ Kf7 2.Re3 Be6 3.Kg3 Ke7 4.Kf4 Kd6
  ²  (0.70)   Depth: 12/18   00:00:02  470kN
1.Rg3+ Kf7 2.Re3
  ²  (0.70)   Depth: 12/18   00:00:02  484kN
1.Rg3+ Kf7 2.Re3
  ²  (0.70)   Depth: 12/21   00:00:03  667kN
1.Rg3+ Kf7 2.Re3 Be6 3.Kg3 Ke7 4.Kf4 Kd6 5.Rd3+ Ke7 6.Rd2 Bc4
  ²  (0.70)   Depth: 13/21   00:00:04  764kN
1.Rg3+ Kf7 2.Re3 Be6 3.Kg3 Ke7 4.Kf4 Kd6 5.Rd3+ Ke7 6.Rd2 Bc4
  ²  (0.70)   Depth: 13/21   00:00:05  1014kN
1.Rg3+ Kf7 2.Re3 Be6 3.Kg3 Ke7 4.Kf4 Kd6 5.Rd3+ Ke7 6.Rd2 Bc4
  ²  (0.70)   Depth: 14/22   00:00:05  1118kN
1.Rc3 Kf7 2.Rc7+ Ke8 3.Kh5 Be6 4.Kg6 Kd8 5.Rg7 Bd7
  ±  (0.71)   Depth: 14/23   00:00:07  1409kN
1.Rc3 Kf7 2.Rc7+ Kg6 3.Kg3
  ±  (0.71)   Depth: 14/23   00:00:07  1435kN
1.Rc3 Kf7 2.Rc7+ Kg6 3.Kg3
  ±  (0.71)   Depth: 14/23   00:00:07  1437kN
1.Rc3 Kf7 2.Rc7+ Kg6 3.Kg3 Be6 4.Kf4 Bf5 5.Rc3 Be6 6.Rg3+ Kf7
  ²  (0.70)   Depth: 15/23   00:00:08  1690kN
1.Rc3 Kf7 2.Rc7+ Kg6 3.Kg3 Be6 4.Kf4 Bf5 5.Rc3 Be6 6.Rg3+ Kf7
  ²  (0.70)   Depth: 15/23   00:00:08  1855kN
1.Rc3 Be6 2.Kg3 Kf7 3.Rc7+ Kg6 4.Kf4 Bf5 5.Re7 Bc8 6.Re8 Bb7 7.Rf8
  ±  (0.71)   Depth: 16/25   00:00:13  3270kN
1.Rc3 Be6 2.Kg3 Kf7 3.Rc7+ Kg6 4.Kf4 Bf5 5.Re7 Bc8 6.Re8 Bb7 7.Rf8
  ±  (0.71)   Depth: 16/30   00:00:18  4896kN
1.Rc3 Be6 2.Rc7 Bf5 3.Re7
  ±  (0.71)   Depth: 17/30   00:00:19  5449kN
1.Rc3 Be6 2.Rc7 Bf5 3.Re7
  ±  (0.71)   Depth: 17/30   00:00:20  5803kN
1.Rc3 Be6 2.Rc7 Bf5 3.Re7 Kh6 4.Re1 Bd7 5.Rd1 Bc8 6.Rc1 Bd7 7.Rc7 Bf5
  ±  (0.71)   Depth: 18/30   00:00:21  6330kN
1.Rc3 Be6 2.Rc7 Bf5 3.Re7 Kh6 4.Re1 Bd7 5.Rd1 Bc8 6.Rc1 Bd7 7.Rc7 Bf5
  ±  (0.71)   Depth: 18/30   00:00:23  6900kN
1.Rc3 Be6 2.Rc7 Bf5 3.Re7 Kh6 4.Re8 Kg6 5.Rg8+ Kh6 6.Re8 Kg6
  ±  (0.71)   Depth: 19/30   00:00:24  7625kN
1.Rc3 Be6 2.Rc7 Bf5 3.Re7 Kh6 4.Re8 Kg6 5.Rg8+ Kh6 6.Re8 Kg6
  ±  (0.71)   Depth: 19/30   00:00:28  9055kN
1.Rc3 Be6 2.Rc7 Bf5 3.Re7 Kh6 4.Re8 Kg6 5.Re1 Bd7 6.Rg1+ Kh6 7.Kg3
  ±  (0.71)   Depth: 20/30   00:00:30  10245kN
1.Rg3+ Kh6 2.Re3 Bd7
  ±  (0.72)   Depth: 20/30   00:00:31  10515kN
1.Rg3+ Kh6 2.Re3 Kg6 3.Re1 Kh6 4.Rf1 Kg6 5.Rg1+ Kf7 6.Kh5 Ke6 7.Re1+ Kd5 8.Kh6
Bg4 9.Kg6 f5 10.Kg5 Kc4 11.Kf4 Kc3 12.Rc1+ Kd4 13.Rc7
  ±  (0.72)   Depth: 20/30   00:00:34  12303kN
1.Rg3+ Kh6 2.Re3 Kg6 3.Re1 Kh6 4.Rf1 Kg6 5.Rg1+ Kf7 6.Kh5 Ke6 7.Re1+ Kd5 8.Kh6
Bg4 9.Kg6 f5 10.Kg5 Kc4 11.Kf4 Kc3 12.Rc1+ Kd4 13.Rc7
  ±  (0.72)   Depth: 20/31   00:00:37  13728kN
1.Rg3+ Kh6 2.Re3 Kg6 3.Re1 Bd7 4.Rf1 Be6 5.Rg1+ Kh6 6.Kg3 Kg6 7.Kh4+ Kh6 8.Kg3
Kg5 9.Re1 Bd7 10.Re7 Bf5 11.Re8 Kh6 12.Kf4 Kg6 13.Rc8
  ±  (0.71)   Depth: 21/31   00:00:44  17120kN
1.Rg3+ Kh6 2.Re3 Kg6 3.Re1 Bd7 4.Rf1 Be6 5.Rg1+ Kh6 6.Kg3 Kg6 7.Kh4+ Kh6 8.Kg3
Kg5 9.Re1 Bd7 10.Re7 Bf5 11.Re8 Kh6 12.Kf4 Kg6 13.Rc8
  ±  (0.71)   Depth: 21/33   00:00:50  19323kN
1.Rg3+ Kh6 2.Re3 Kg6 3.Re1 Bd7 4.Rf1 Be6 5.Rg1+ Kh6 6.Rc1 Kg6 7.Kg3
  ±  (0.71)   Depth: 22/34   00:01:00  24294kN
1.Rc3 Be6 2.Rc7 Kh6 3.Rc6 Kg6
  ±  (0.72)   Depth: 22/34   00:01:02  24970kN
1.Rc3 Be6 2.Rc7 Bf5
  ±  (0.72)   Depth: 22/34   00:01:04  26326kN
1.Rc3 Be6 2.Rc7 Bf5
  ±  (0.72)   Depth: 22/34   00:01:07  27684kN
1.Rc3 Be6 2.Rc7 Bf5 3.Kg3 Kh6 4.Rc6 Kg5 5.Rc3 Kg6 6.Rb3 Bd7 7.Kh4
  ±  (0.72)   Depth: 23/34   00:01:15  32599kN
1.Rg3+ Kh6 2.Rg1 Be6 3.Rc1 Bd7 4.Rd1 Bc8 5.Rf1 Kg6 6.Rg1+ Kh6 7.Kg3 Kg5 8.Kf3+
Kf5 9.Rg7 Be6 10.Kg3 Ke5
  ±  (0.73)   Depth: 23/37   00:01:31  40386kN
1.Rg3+ Kh6 2.Rg1
  ±  (0.73)   Depth: 23/37   00:01:36  42949kN
1.Rg3+ Kh6 2.Rg1
  ±  (0.73)   Depth: 23/37   00:01:38  43751kN
1.Rg3+ Kh6 2.Rg1 Be6 3.Rf1 Kg6 4.Rd1
  ±  (0.74)   Depth: 24/37   00:02:22  65654kN
1.Rg3+ Kh6 2.Rg1 Be6 3.Rf1 Kg6 4.Rd1
  ±  (0.74)   Depth: 24/37   00:02:32  69315kN
1.Rg3+ Kh6 2.Rg1 Be6 3.Rf1 Kg6 4.Rd1 Bc8 5.Rg1+ Kh6 6.Ra1 Kg6 7.Re1 Bd7
  ±  (0.74)   Depth: 25/37   00:03:38  91273kN
1.Rg3+ Kh6 2.Rg1 Be6 3.Rf1 Kg6 4.Rd1 Bc8 5.Rg1+ Kh6 6.Ra1 Kg6 7.Re1 Bd7
  ±  (0.74)   Depth: 25/37   00:03:47  93955kN
1.Rg3+ Kh6 2.Rg1 Be6 3.Rf1 Kg6 4.Rd1 Bc8 5.Rg1+ Kh6 6.Ra1 Kg6 7.Re1 Bd7 8.Rg1+
Kh6 9.Kg3 Kg6 10.Rd1 Bf5 11.Rd8
  ±  (0.74)   Depth: 26/38   00:04:20  103011kN
1.Rg3+ Kh6 2.Rg1 Be6 3.Rf1 Kg6 4.Rd1 Bc8 5.Rg1+ Kh6 6.Ra1 Kg6 7.Re1 Bd7 8.Rg1+
Kh6 9.Kg3 Kg6 10.Rd1 Bf5 11.Rd8
  ±  (0.74)   Depth: 26/38   00:04:42  109417kN
1.Rg3+ Kh6 2.Rg1 Be6 3.Rf1 Kg6 4.Rd1 Bc8 5.Rg1+ Kh6
  ±  (0.74)   Depth: 27/38   00:05:15  120141kN
1.Rg3+ Kh6 2.Rg1 Be6 3.Rf1 Kg6 4.Rd1 Bc8 5.Rg1+ Kh6
  ±  (0.74)   Depth: 27/38   00:05:38  127774kN
1.Rg3+ Kh6 2.Rg1 Be6 3.Rf1 Kg6 4.Rd1 Bc8 5.Rg1+ Kh6 6.Kg3 Kg6 7.Rf1 Bd7 8.Re1
Bf5 9.Kh4 Bd7 10.Rf1 Be6 11.Rd1 Bc8 12.Rd8 Be6
  ±  (0.74)   Depth: 28/42   00:06:43  151845kN
1.Rg3+ Kh6 2.Rg1 Be6 3.Rf1 Kg6 4.Rd1 Bc8 5.Rg1+ Kh6 6.Kg3 Kg6 7.Rf1 Bd7 8.Re1
Bf5 9.Kh4 Bd7 10.Rf1 Be6 11.Rd1 Bc8 12.Rd8 Be6
  ±  (0.74)   Depth: 28/42   00:07:08  161048kN
1.Rg3+ Kh6 2.Ra3 Bd7 3.Kg3
  ±  (0.75)   Depth: 29/47   00:15:17  389302kN
1.Rc3 Kh6
  ±  (0.76)   Depth: 29/47   00:15:40  400997kN
1.Rc3 Kh6 2.Rc1 Bd7 3.Rd1 Bc8 4.Rf1 Kg6 5.Rg1+ Kh6 6.Kg3 Kg5 7.Kf3+ Kf5 8.Rg7
Be6 9.Kg3 Ke5 10.Ra7 Ke4
  ±  (1.13)   Depth: 29/47   00:18:08  477399kN
1.Rc3 Kh6 2.Rc1 Bd7 3.Rd1 Bc8 4.Rf1 Kg6 5.Rg1+ Kh6 6.Kg3 Kg5 7.Kf3+ Kf5 8.Rg7
Be6 9.Kg3 Ke5 10.Ra7 Ke4
  ±  (1.13)   Depth: 29/47   00:19:28  521805kN
1.Rc3 Kh6 2.Rc1 Bd7 3.Rd1 Bc8 4.Rf1 Kg6 5.Rg1+ Kh6 6.Kg3 Kg5 7.Kf3+ Kf5 8.Rg4
Be6 9.Kg3 Bd7 10.Rg7 Bb5
  ±  (1.14)   Depth: 30/47   00:27:02  761285kN
1.Rc3 Kh6 2.Rc1 Bd7 3.Rd1 Bc8 4.Rf1 Kg6 5.Rg1+ Kh6 6.Kg3 Kg5 7.Kf3+ Kf5 8.Rg4
Be6 9.Kg3 Bd7 10.Rg7 Bb5
  ±  (1.14)   Depth: 30/47   00:29:26  835316kN
1.Rc3 Kh6 2.Rc1 Bd7 3.Rd1 Bc8 4.Rf1 Kg6 5.Rg1+ Kh6 6.Rf1 Kg6
  ±  (1.15)   Depth: 31/50   00:37:16  1052982kN
1.Rg3+ Kh6 2.Rg1 Bd7 3.Kg3 Kg6 4.Kf3+ Kf7 5.Rd1 Be6 6.Kg3 Kg6 7.Kh4 Bd7 8.Rxd7
Kh6
  ±  (1.16)   Depth: 31/50   00:41:50  1185325kN
1.Rg3+ Kh6 2.Rg1 Bd7 3.Re1
  ±  (1.16)   Depth: 31/50   00:45:45  1308837kN
1.Rg3+ Kh6 2.Rg1 Bd7 3.Re1
  ±  (1.16)   Depth: 31/50   00:48:33  1395208kN

(Blass, Tel-Aviv 18.01.2004)

Re: Can white win? Ricardo Gibert 12:21:29 01/18/04
- Re: Can white win? Ricardo Gibert 14:54:04 01/18/04
  - Re: Can white win? Peter Berger 10:17:43 01/19/04
- Re: Can white win? martin fierz 13:36:21 01/18/04
  - Re: Can white win? Ricardo Gibert 13:51:41 01/18/04
Re: Can white win? (Diagram) Kurt Utzinger 22:25:52 01/17/04
- Re: Can white win? (no) Kurt Utzinger 23:27:35 01/17/04
  - Re: Can white win? (no) Dieter Buerssner 12:35:22 01/18/04
    - Re: Can white win? (no) Dieter Buerssner 12:49:21 01/18/04
      - Re: Can white win? (no) martin fierz 13:39:28 01/18/04
  - Re: Can white win? (no) martin fierz 01:44:59 01/18/04
    - Re: Can white win? (no) Kurt Utzinger 02:29:59 01/18/04
      - Re: Can white win? (no) Uri Blass 03:42:50 01/18/04
        
        Re: Can white win? (no) martin fierz 04:31:08 01/18/04
        
        Re: Can white win? (no) Uri Blass 04:45:27 01/18/04
    - Re: Can white win? (no) Uri Blass 01:54:20 01/18/04
  - Re: Can white win? (no) Uri Blass 00:25:03 01/18/04
Re: Can white win? Dieter Buerssner 13:55:35 01/17/04
- Re: Can white win? Uri Blass 14:02:19 01/17/04
  - Re: Can white win? Dieter Buerssner 12:29:19 01/18/04
  - Re: Can white win? Dann Corbit 14:25:01 01/17/04
    - Re: Can white win? Uri Blass 14:52:56 01/17/04
      - Re: Can white win? Peter Berger 03:26:03 01/18/04
        
        Re: Can white win? Uri Blass 06:26:07 01/18/04
        
        Re: Can white win? martin fierz 04:33:17 01/18/04
        
        Re: Can white win? Peter Berger 08:21:00 01/18/04
        
        Re: Can white win? Uri Blass 03:56:13 01/18/04

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