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Subject: Re: perpetual check

Author: Uri Blass

Date: 05:24:24 10/16/01

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On October 16, 2001 at 08:08:39, Jouni Uski wrote:

>On October 16, 2001 at 07:58:15, Steffen Jakob wrote:
>
>>Hi,
>>
>>this is a position from a blitz game Hossa - Sjeng:
>>
>>[D]7k/4QP2/7p/6rP/8/1K6/6r1/8 b
>>
>>For a human it's obvious that this is a draw. Hossa was rather clueless and
>>thought that white was winning. Are there any engines which show a draw value at
>>once (without significant search depth)?
>>
>>Greetings,
>>Steffen.
>
>Crafty shows 0.00 after some seconds, but with depth = 16.
>
>Jouni

Yace needs only depth=15 but crafty is faster(I give also analysis of other
programs)

New position
7k/4QP2/7p/6rP/8/1K6/6r1/8 b - - 0 1

Analysis by Yace 0.99.56:

1...Rxh5 2.f8Q+ Rg8
  +-  (8.74)   Depth: 1   00:00:00
1...Rb5+ 2.Qb4
  ±  (1.31)   Depth: 1   00:00:00
1...Rb5+ 2.Kc4
  ±  (0.88)   Depth: 1   00:00:00
1...R2g3+ 2.Kc4
  ±  (0.84)   Depth: 1   00:00:00
1...R2g3+ 2.Kb2 Rg2+ 3.Kc1 Rg1+ 4.Kd2
  ±  (1.04)   Depth: 2   00:00:00
1...R2g3+ 2.Kb2 Rg2+ 3.Kc3 R2g3+ 4.Kd4 R3g4+ 5.Ke3
  ±  (1.04)   Depth: 3   00:00:00
1...R5g3+ 2.Kc4 Rg4+ 3.Kd5 Rg5+ 4.Kc6 Rc2+ 5.Kd7
  ±  (1.02)   Depth: 3   00:00:00
1...R5g3+ 2.Kc4 Rg4+ 3.Kd5 R2g3 4.f8Q+ Rg8
  +-  (1.42)   Depth: 4   00:00:00
1...R5g3+ 2.Kc4 Rg4+ 3.Kd5 Rg5+ 4.Kc6 Rc2+ 5.Kd7 Rd5+ 6.Ke6 Rc8 7.f8Q+ Rxf8
8.Qxf8+
  +-  (2.43)   Depth: 4   00:00:00
1...R2g3+ 2.Kb2 Rg2+ 3.Kc3 R2g3+ 4.Kd4 R3g4+ 5.Ke3 Rg3+ 6.Ke4
  +-  (2.42)   Depth: 4   00:00:00
1...R2g3+ 2.Kb2 Rg2+ 3.Kc3 R2g3+ 4.Kd4 R3g4+ 5.Ke3 Rg3+ 6.Ke2 Rg2+ 7.Ke3 R2g3+
8.Ke2 Rg2+ 9.Ke3 R2g3+
  ±  (1.03)   Depth: 4   00:00:00
1...R2g3+ 2.Kb2 Rg2+ 3.Kc3 R2g3+ 4.Kd4 R3g4+ 5.Ke3 Rg3+ 6.Kf2 Rg2+ 7.Ke1 Rg1+
8.Ke2 R1g2+ 9.Ke3 R2g3+ 10.Kf2 Rg2+ 11.Ke3 R2g3+
  ±  (1.06)   Depth: 5   00:00:00  29kN
1...R2g3+ 2.Kb2 Rg2+ 3.Kc3 R2g3+ 4.Kd4 R3g4+ 5.Ke3 Rg3+ 6.Kf2 Rg2+ 7.Ke1 Rg1+
8.Ke2 R1g2+ 9.Ke1 Rg1+ 10.Ke2 R1g2+ 11.Ke1
  ±  (1.03)   Depth: 6   00:00:00  43kN
1...R2g3+ 2.Kb2 Rg2+ 3.Kc3 R2g3+ 4.Kd4 R3g4+ 5.Ke3 Rg3+ 6.Kf2 Rg2+ 7.Kf1 Rg1+
8.Ke2 R1g2+ 9.Kf3 R2g3+ 10.Kf2 Rg2+ 11.Kf1 Rg1+ 12.Kf2 R1g2+
  ±  (1.04)   Depth: 7   00:00:00  61kN
1...R2g3+ 2.Kb2 Rg2+ 3.Kc3 R2g3+ 4.Kd4 R3g4+ 5.Ke3 Rg3+ 6.Kf2 Rg2+ 7.Kf1 Rg1+
8.Kf2 R1g2+ 9.Ke3 R2g3+ 10.Kf2 Rg2+
  ±  (1.04)   Depth: 8   00:00:00  196kN
1...R2g3+ 2.Kb2 Rg2+ 3.Kc3 R2g3+ 4.Kd4 R3g4+ 5.Ke3 Rg3+ 6.Kf2 Rg2+ 7.Kf1 Rg1+
8.Ke2 R1g2+ 9.Kf3 R2g3+ 10.Ke4 R3g4+ 11.Kf3 Rg3+ 12.Ke2 Rg2+ 13.Kf1 Rg1+ 14.Kf2
R1g2+ 15.Kf1
  ±  (1.04)   Depth: 9   00:00:01  371kN
1...R2g3+ 2.Kb2 Rg2+ 3.Kc3 R2g3+ 4.Kd4 R3g4+ 5.Ke3 Rg3+ 6.Kf2 Rg2+ 7.Kf1 Rg1+
8.Ke2 R1g2+ 9.Kf3 R2g3+ 10.Kf2 Rg2+ 11.Kf1 Rg1+ 12.Kf2 R1g2+
  ±  (1.04)   Depth: 10   00:00:01  684kN
1...R2g3+ 2.Kb2 Rg2+ 3.Kc3 R2g3+ 4.Kd4 R3g4+ 5.Ke3 Rg3+ 6.Kf2 Rg2+ 7.Kf1 Rg1+
8.Kf2 R1g2+ 9.Ke3 R2g3+ 10.Kf2 Rg2+
  ±  (1.04)   Depth: 11   00:00:03  1204kN
1...R2g3+ 2.Kb2 Rg2+ 3.Kc3 R2g3+ 4.Kd4 R3g4+ 5.Ke3 Rg3+ 6.Kf2 Rg2+ 7.Kf1 Rg1+
8.Kf2 R1g2+ 9.Kf1 Rg1+ 10.Kf2 R1g2+
  ±  (1.04)   Depth: 12   00:00:05  2024kN
1...R2g3+ 2.Kb2 Rg2+ 3.Kc3 R2g3+ 4.Kd4 R3g4+ 5.Ke3 Rg3+ 6.Kf2 Rg2+ 7.Kf1 Rg1+
8.Kf2 R1g2+ 9.Ke3 R2g3+ 10.Kf2 Rg2+
  ±  (1.04)   Depth: 13   00:00:09  3556kN
1...R2g3+ 2.Kb2 Rg2+ 3.Kc3 R2g3+ 4.Kd4 R3g4+ 5.Ke3 Rg3+ 6.Kf2 Rg2+ 7.Kf1 Rg1+
8.Ke2 R1g2+ 9.Kf3 R2g3+ 10.Ke4 R3g4+ 11.Kd3 Rg3+ 12.Ke2 Rg2+ 13.Kf3 R2g3+ 14.Kf2
Rg2+ 15.Ke1 Rg1+ 16.Kf2 R1g2+
  ±  (1.04)   Depth: 14   00:00:17  6180kN
1...R2g3+ 2.Kb2 Rg2+ 3.Kc3 R2g3+ 4.Kd4 R3g4+ 5.Ke3 Rg3+ 6.Kf2 Rg2+ 7.Kf1 Rg1+
8.Ke2 R1g2+ 9.Kf3 R2g3+ 10.Ke4 R3g4+ 11.Kd3 Rg3+ 12.Ke2 Rg2+ 13.Kf3 R2g3+ 14.Kf2
Rg2+ 15.Ke1 Rg1+ 16.Kf2
  ±  (1.04)   Depth: 14   00:00:22  7656kN
1...R2g3+ 2.Kb2 Rg2+ 3.Kc3 R2g3+ 4.Kd4 R3g4+ 5.Ke3 Rg3+ 6.Kf2 Rg2+ 7.Kf1 Rg1+
8.Ke2 R1g2+ 9.Kd3 R2g3+ 10.Kc2 Rg2+ 11.Kd1 Rg1+ 12.Qe1 Rxe1+ 13.Kd2 Rg8 14.f8R
  ²  (0.64)   Depth: 15   00:00:26  9703kN
1...R2g3+ 2.Kb2 Rg2+ 3.Kc3 R2g3+ 4.Kd4 R3g4+ 5.Ke3 Rg3+ 6.Kf2 Rg2+ 7.Kf1 Rg1+
8.Ke2 R1g2+ 9.Kf3 R2g3+ 10.Ke4 R3g4+ 11.Kd3 Rg3+ 12.Ke2 Rg2+
  =  (0.00)   Depth: 15   00:00:46  18527kN

(Blass, Tel-aviv 16.10.2001)
New position
7k/4QP2/7p/6rP/8/1K6/6r1/8 b - - 0 1

Analysis by Crafty 18.10:

1...Rb5+ 2.Kc4
  +-  (2.39)   Depth: 1/6   00:00:01
1...Rb5+ 2.Kc4 Rf5 3.f8Q+ Rxf8 4.Qxf8+
  +-  (5.55)   Depth: 2/6   00:00:01
1...Rf2
  +-  (5.15)   Depth: 2/6   00:00:01
1...R2g3+ 2.Kc4 R3g4+ 3.Kd3
  +-  (2.59)   Depth: 2/6   00:00:01
1...R5g3+ 2.Kc4 Rc2+ 3.Kd5
  +-  (2.50)   Depth: 2/6   00:00:01
1...R5g3+ 2.Kc4 Rg4+ 3.Kd5 Rd2+ 4.Ke6
  +-  (2.78)   Depth: 3/8   00:00:01
1...R5g3+ 2.Kb4 Rg4+ 3.Kc5
  +-  (2.78)   Depth: 4/10   00:00:01
1...R2g3+ 2.Kc4 R3g4+ 3.Kd3 Rg3+ 4.Ke4 R3g4+ 5.Kf3
  +-  (2.74)   Depth: 4/10   00:00:01
1...R2g3+ 2.Kc4 R3g4+ 3.Kd3 Rg3+ 4.Ke4 R3g4+ 5.Kf3 Rg3+ 6.Kf4
  +-  (2.84)   Depth: 5/12   00:00:01
1...R2g3+ 2.Kc4 R3g4+ 3.Kd3 Rg3+ 4.Ke4 R3g4+ 5.Kf3 Rg3+ 6.Kf4 R3g4+ 7.Kf3
  +-  (2.74)   Depth: 6/14   00:00:01  23kN
1...R2g3+ 2.Kc4 R3g4+ 3.Kd3 Rg3+ 4.Ke4 R3g4+ 5.Kf3 Rg3+ 6.Kf4 R3g4+ 7.Ke3 Rg3+
8.Kf4
  +-  (2.84)   Depth: 7/18   00:00:01  45kN
1...R2g3+ 2.Kc4 R3g4+ 3.Kd3 Rg3+ 4.Ke4 R3g4+ 5.Kf3 Rg3+ 6.Kf4 R3g4+ 7.Ke3 Rg3+
8.Kd4 R3g4+ 9.Ke3
  +-  (2.74)   Depth: 8/18   00:00:01  83kN
1...R2g3+ 2.Kc4 R3g4+ 3.Kd3 Rg3+ 4.Ke4 R3g4+ 5.Kf3 Rg3+ 6.Kf4 R3g4+ 7.Ke3 Rg3+
8.Kd4 R3g4+ 9.Kc3 Rg3+ 10.Kd4
  +-  (2.59)   Depth: 9/20   00:00:01  150kN
1...R2g3+ 2.Kc4 R3g4+ 3.Kd3 Rg3+ 4.Ke4 R3g4+ 5.Kf3 Rg3+ 6.Kf4 R3g4+ 7.Ke3 Rg3+
8.Kd4 R3g4+ 9.Kc3 Rg3+ 10.Kc2 Rg2+ 11.Kd3
  +-  (2.59)   Depth: 10/23   00:00:02  256kN, tb=3
1...R2g3+ 2.Kc4 R3g4+ 3.Kd3 Rg3+ 4.Ke4 R3g4+ 5.Kf3 Rg3+ 6.Kf4 R3g4+ 7.Ke3 Rg3+
8.Kd4 R3g4+ 9.Kc3 Rg3+ 10.Kd2 Rg2+ 11.Ke1 Rg1+ 12.Ke2
  +-  (2.54)   Depth: 11/24   00:00:02  430kN, tb=3
1...R2g3+ 2.Kc4 R3g4+ 3.Kd3 Rg3+ 4.Ke4 R3g4+ 5.Kf3 Rg3+ 6.Kf4 R3g4+ 7.Ke3 Rg3+
8.Kd4 R3g4+ 9.Kc3 Rg3+ 10.Kd2 Rg2+ 11.Ke1 Rg1+ 12.Kf2 R1g2+ 13.Kf3
  +-  (2.74)   Depth: 12/26   00:00:03  826kN, tb=4
1...R2g3+ 2.Kc4 R3g4+ 3.Kd3 Rg3+ 4.Ke4 R3g4+ 5.Kf3 Rg3+ 6.Kf4 R3g4+ 7.Ke3 Rg3+
8.Kd4 R3g4+ 9.Kc3 Rg3+ 10.Kd2 Rg2+ 11.Ke1 Rg1+ 12.Kf2 R1g2+ 13.Kf3
  +-  (2.34)   Depth: 13/29   00:00:04  1224kN, tb=12
1...R2g3+ 2.Kc4 R3g4+ 3.Kd3 Rg3+ 4.Ke4 R3g4+ 5.Kf3 Rg3+ 6.Kf4 R3g4+ 7.Ke3 Rg3+
8.Kd4 R3g4+ 9.Kc3 Rg3+ 10.Kd2 Rg2+ 11.Kc1 Rg1+ 12.Kb2 R1g2+ 13.Ka3 R2g3+ 14.Kb4
R3g4+ 15.Kc3
  +-  (2.49)   Depth: 14/30   00:00:07  2586kN, tb=33
1...R2g3+ 2.Kc4 R3g4+ 3.Kd3 Rg3+ 4.Ke4 R3g4+ 5.Kf3 Rg3+ 6.Kf4 R3g4+ 7.Ke3 Rg3+
8.Kd4 R3g4+ 9.Kc3 Rg3+ 10.Kd2 Rg2+ 11.Kc1 Rg1+ 12.Kb2 R1g2+ 13.Ka3 R2g3+ 14.Kb4
R3g4+ 15.Kc3
  +-  (2.09)   Depth: 15/32   00:00:09  3577kN, tb=50
1...R2g3+ 2.Kc4 R3g4+ 3.Kd3 Rg3+ 4.Ke4 R3g4+ 5.Kf3 Rg3+ 6.Kf4 R3g4+ 7.Ke3 Rg3+
8.Kd4 R3g4+ 9.Kc3 Rg3+ 10.Kd2 Rg2+ 11.Kc1 Rg1+ 12.Kb2 R1g2+ 13.Ka3 R2g3+ 14.Kb4
R3g4+ 15.Kc3
  +-  (1.70)   Depth: 16/34   00:00:13  5647kN, tb=88
1...R2g3+ 2.Kc4 R3g4+ 3.Kd3 Rg3+ 4.Ke4 R3g4+ 5.Kf3 Rg3+ 6.Kf4 R3g4+ 7.Kf3
  =  (0.00)   Depth: 16/34   00:00:15  7137kN, tb=118
1...R2g3+ 2.Kc4 R3g4+ 3.Kd3 Rg3+ 4.Ke4 R3g4+ 5.Kf3 Rg3+ 6.Kf4 R3g4+ 7.Kf3
  =  (0.00)   Depth: 17/37   00:00:22  10485kN, tb=196

(Blass, Tel-aviv 16.10.2001)
New position
7k/4QP2/7p/6rP/8/1K6/6r1/8 b - - 0 1

Analysis by Deep Fritz:

1...Rxh5--
  +-  (5.81)   Depth: 1/3   00:00:00
1...Rxh5-- 2.f8Q+ Rg8
  +-  (7.91)   Depth: 1/5   00:00:00
1...R5g3+!
  +-  (3.94)   Depth: 1/5   00:00:00
1...R5g3+! 2.Kc4
  +-  (1.47)   Depth: 1/7   00:00:00
1...R5g3+ 2.Kc4 Rg4+ 3.Kd5
  +-  (1.69)   Depth: 2/9   00:00:00
1...R2g3+!
  +-  (1.66)   Depth: 2/9   00:00:00
1...R2g3+! 2.Kc4 R3g4+ 3.Kd3
  +-  (1.50)   Depth: 2/11   00:00:00
1...R2g3+ 2.Kc4 R3g4+ 3.Kd3 Rg3+ 4.Ke4 R3g4+ 5.Ke3
  +-  (1.50)   Depth: 3/14   00:00:00  1kN
1...R2g3+ 2.Kc4 R3g4+ 3.Kd3 Rg3+ 4.Ke4 R3g4+ 5.Ke3
  +-  (1.50)   Depth: 4/15   00:00:00  3kN
1...R2g3+ 2.Kc4 R3g4+ 3.Kd3 Rg3+ 4.Ke4 R3g4+ 5.Ke3 Rg3+ 6.Kf4 R3g4+ 7.Ke3
  +-  (1.50)   Depth: 5/17   00:00:00  6kN
1...R2g3+ 2.Kc4 R3g4+ 3.Kd3 Rg3+ 4.Ke4 R3g4+ 5.Ke3 Rg3+ 6.Kf4 R3g4+ 7.Kf3
  +-  (1.44)   Depth: 6/20   00:00:00  14kN
1...R2g3+ 2.Kc4 R3g4+ 3.Kd3 Rg3+ 4.Ke4 R3g4+ 5.Ke3 Rg3+ 6.Kd4
  +-  (1.44)   Depth: 7/20   00:00:00  29kN
1...R2g3+ 2.Kc4 R3g4+ 3.Kd3 Rg3+ 4.Ke4 R3g4+ 5.Ke3 Rg3+ 6.Kd4
  ±  (1.31)   Depth: 8/22   00:00:00  59kN
1...R2g3+ 2.Kc4 R3g4+ 3.Kd3 Rg3+ 4.Ke4 R3g4+ 5.Ke3 Rg3+ 6.Kd4
  ±  (1.31)   Depth: 9/23   00:00:00  118kN
1...R2g3+ 2.Kc4 R3g4+ 3.Kd3 Rg3+ 4.Ke4 R3g4+ 5.Ke3 Rg3+ 6.Kd4
  ±  (1.31)   Depth: 10/24   00:00:00  235kN, tb=1
1...R2g3+ 2.Kc4 R3g4+ 3.Kd3 Rg3+ 4.Ke4 R3g4+ 5.Ke3 Rg3+ 6.Kd4
  ±  (1.31)   Depth: 11/26   00:00:00  437kN, tb=2
1...R2g3+ 2.Kc4 R3g4+ 3.Kd3 Rg3+ 4.Ke4 R3g4+ 5.Ke3 Rg3+ 6.Kf2 Rg2+ 7.Ke1
  +-  (1.44)   Depth: 12/29   00:00:01  871kN, tb=6
1...R2g3+ 2.Kc4 R3g4+ 3.Kd3 Rg3+ 4.Ke4 R3g4+ 5.Ke3 Rg3+ 6.Kf2 Rg2+ 7.Ke1
  +-  (1.44)   Depth: 13/30   00:00:02  1578kN, tb=19
1...R2g3+ 2.Kc4 R3g4+ 3.Kd3 Rg3+ 4.Ke4 R3g4+ 5.Ke3 Rg3+ 6.Kf2 Rg2+ 7.Ke1
  +-  (1.44)   Depth: 14/29   00:00:04  2707kN, tb=41
1...R2g3+ 2.Kc4 R3g4+ 3.Kd3 Rg3+ 4.Ke4 R3g4+ 5.Ke3 Rg3+ 6.Kf2 Rg2+ 7.Ke1
  +-  (1.44)   Depth: 15/33   00:00:07  4572kN, tb=75
1...R2g3+ 2.Kc4 R3g4+ 3.Kd3 Rg3+ 4.Ke4 R3g4+ 5.Ke3 Rg3+ 6.Kf2 Rg2+ 7.Ke1
  +-  (1.44)   Depth: 16/34   00:00:11  7821kN, tb=130
1...R2g3+ 2.Kc4 R3g4+ 3.Kd3 Rg3+ 4.Ke4 R3g4+ 5.Ke3 Rg3+ 6.Kf2 Rg2+ 7.Ke1
  +-  (1.44)   Depth: 17/34   00:00:20  13618kN, tb=209
1...R2g3+ 2.Kc4 R3g4+ 3.Kd3 Rg3+ 4.Ke4 R3g4+ 5.Ke3 Rg3+ 6.Kf2 Rg2+ 7.Ke1
  +-  (1.44)   Depth: 18/39   00:00:34  24337kN, tb=320
1...R2g3+ 2.Kc4 R3g4+ 3.Kd3 Rg3+ 4.Ke4 R3g4+ 5.Ke3 Rg3+ 6.Kf2 Rg2+ 7.Ke1
  +-  (1.44)   Depth: 19/39   00:01:03  45130kN, tb=508

(Blass, Tel-aviv 16.10.2001)
New position
7k/4QP2/7p/6rP/8/1K6/6r1/8 b - - 0 1

Analysis by Junior 7:

1...Rg1 2.f8Q+ Rg8 3.Qxh6#
  +-  (#3)   Depth: 3   00:00:00
1...R5g3+ 2.Kb4 Rb2+ 3.Ka5 Ra2+ 4.Kb6 Rb3+ 5.Kc5 Rc3+ 6.Kd6 Ra6+ 7.Kd7
  ±  (1.03)   Depth: 6   00:00:00  12kN
1...R5g3+ 2.Kb4 Rb2+ 3.Ka5 Ra2+ 4.Kb6 Rb3+ 5.Kc5 Rc3+ 6.Kd6 Ra6+ 7.Kd7
  ±  (1.03)   Depth: 6   00:00:00  12kN
1...R5g3+ 2.Kb4 Rb2+ 3.Ka5 Ra2+ 4.Kb6 Rb3+ 5.Kc5 Rc3+ 6.Kd6 Ra6+ 7.Kd7
  ±  (1.03)   Depth: 6   00:00:00  12kN
1...R5g3+ 2.Kc4 Rg4+ 3.Kd5 Rd2+ 4.Ke6 Re2+ 5.Kf5 Rg5+ 6.Kf4 Rf2+ 7.Ke3 Rf1
8.f8Q+ Rxf8 9.Qxf8+
  +-  (2.61)   Depth: 9   00:00:00  155kN, tb=1
1...R2g3+ 2.Kc2 Rg2+ 3.Kd1 Rg1+ 4.Ke2 R1g2+ 5.Kf1 Rg1+ 6.Kf2 R1g2+ 7.Kf3 R2g3+
8.Kf4 R3g4+ 9.Ke3 Rg3+ 10.Kd4
  ±  (1.31)   Depth: 9   00:00:00  186kN, tb=1
1...R2g3+ 2.Kc2 Rg2+ 3.Kd1 Rg1+ 4.Ke2 R1g2+ 5.Kf1 Rg1+ 6.Kf2 R1g2+ 7.Kf3 R2g3+
8.Kf4 R3g4+ 9.Ke3 Rg3+
  ±  (1.31)   Depth: 12   00:00:00  358kN, tb=23
1...R2g3+ 2.Kc2 Rg2+ 3.Kd1 Rg1+ 4.Ke2 R1g2+ 5.Kf1 Rg1+ 6.Kf2 R1g2+ 7.Kf3 R2g3+
8.Kf4 R3g4+ 9.Ke3 Rg3+ 10.Ke4 R3g4+
  ±  (1.23)   Depth: 15   00:00:02  1095kN, tb=217
1...R2g3+ 2.Kc2 Rg2+ 3.Kd1 Rg1+ 4.Ke2 R1g2+ 5.Kf1 Rg1+ 6.Kf2 R1g2+ 7.Ke3 R2g3+
8.Ke4 R3g4+ 9.Kd3 Rg3+ 10.Kd4 R3g4+
  ±  (1.07)   Depth: 18   00:00:09  4434kN, tb=651
1...R2g3+!
  ±  (0.77)   Depth: 20   00:00:19  10619kN, tb=1116
1...R2g3+! 2.Kc2 Rg2+ 3.Kd1
  =  (0.00)   Depth: 20   00:00:28  17455kN, tb=1251

(Blass, Tel-aviv 16.10.2001)
New position
7k/4QP2/7p/6rP/8/1K6/6r1/8 b - - 0 1

Analysis by Gambit Tiger 2.0:

1...R2g3+ 2.Kc4 R3g4+ 3.Kd3 Rg3+ 4.Kc2 Rg2+ 5.Kb1 Rg1+ 6.Kb2 R1g2+ 7.Ka3 R5g3+
8.Kb4 Rb2+ 9.Kc4 Rc2+
  ±  (1.36)   Depth: 11   00:00:00  119kN, tb=9
1...R2g3+ 2.Ka2 Rg2+ 3.Ka1 Rg1+ 4.Kb2 R1g2+ 5.Kb1 Rg1+ 6.Kc2 R1g2+ 7.Kc1 Rg1+
8.Kd2 R1g2+ 9.Kc3
  ±  (1.36)   Depth: 11   00:00:01  305kN, tb=12
1...R2g3+ 2.Ka2 Rg2+ 3.Ka1 Rg1+ 4.Kb2 R1g2+ 5.Kb1 Rg1+ 6.Kc2 R1g2+ 7.Kc1 Rg1+
8.Kd2 R1g2+ 9.Kc3
  ±  (1.38)   Depth: 12   00:00:01  500kN, tb=21
1...R2g3+ 2.Ka2 Rg2+ 3.Kb1 Rg1+ 4.Kc2 R1g2+ 5.Kd1 Rg1+ 6.Kd2 R1g2+ 7.Kc1 Rg1+
8.Kb2 R1g2+ 9.Ka3
  ±  (1.40)   Depth: 13   00:00:04  1158kN, tb=50
1...R2g3+ 2.Ka2 Rg2+ 3.Kb1 Rg1+ 4.Kc2 R1g2+ 5.Kc1 Rg1+ 6.Kd2 R1g2+ 7.Kd1 Rg1+
8.Ke2 R1g2+ 9.Ke1 Rg1+
  ±  (1.38)   Depth: 14   00:00:08  2150kN, tb=76
1...R2g3+ 2.Ka2 Rg2+ 3.Kb1 Rg1+ 4.Kc2 R1g2+ 5.Kd1 Rg1+ 6.Ke2 R1g2+ 7.Ke1 Rg1+
8.Kd2 R1g2+ 9.Kc1 Rg1+
  ±  (1.40)   Depth: 15   00:00:12  3396kN, tb=121
1...R2g3+ 2.Ka2 Rg2+ 3.Kb1 Rg1+ 4.Kc2 R1g2+ 5.Kc3 R2g3+ 6.Kb4 R3g4+ 7.Ka3 Rg3+
8.Kb2 Rg2+ 9.Kc1 Rg1+
  ±  (1.38)   Depth: 16   00:00:26  8218kN, tb=233
1...R2g3+ 2.Ka2 Rg2+ 3.Kb1 Rg1+ 4.Kc2 R1g2+ 5.Kd1 Rg1+ 6.Ke2 R1g2+ 7.Kf1 Rg1+
8.Kf2 R1g2+ 9.Ke1 Rg1+
  ±  (1.40)   Depth: 17   00:00:40  12383kN, tb=372

(Blass, Tel-aviv 16.10.2001)

Uri



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