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Subject: Re: Another test position

Author: bobby palacios

Date: 14:50:45 02/26/03

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On February 26, 2003 at 17:44:11, bobby palacios wrote:

>On February 26, 2003 at 14:38:41, Steffen Jakob wrote:
>
>>Here is another one from Hossa - Fritz 8:
>>
>>[D]3r2k1/6pp/4bp2/8/1ppBP1P1/1q3P2/1P1R2KP/4Q3 b - - 0 39
>>
>>Fritz played 39... Rxd4 and was able to win the game with the b and c pawn.
>>Nevertheless 39... Rxd4 is only a draw (please correct me if I am wrong) and
>>therefore it should be avoided or at least evaluated as a draw.
>>

Ruffian 1.01 avoids Rxd4 almost instantly, but evaluates the position as a draw
anyways:

New game
3r2k1/6pp/4bp2/8/1ppBP1P1/1q3P2/1P1R2KP/4Q3 b - - 0 1

Analysis by Ruffian 1.0.1:

1...h6
  =  (-0.14)   Depth: 1/1   00:00:00
1...c3
  ³  (-0.31)   Depth: 1/4   00:00:00
1...Rxd4 2.Rxd4 Qxb2+
  ³  (-0.40)   Depth: 1/6   00:00:00
1...Rxd4 2.Rxd4 Qxb2+ 3.Rd2
  ³  (-0.37)   Depth: 2/6   00:00:00
1...c3 2.Bxc3 Rxd2+ 3.Bxd2 Qxb2
  ³  (-0.46)   Depth: 2/7   00:00:00
1...c3 2.bxc3 Qc4
  ±  (0.85)   Depth: 3/9   00:00:00
1...Rxd4 2.Rxd4 Qxb2+ 3.Rd2 Qe5
  ³  (-0.67)   Depth: 3/9   00:00:00
1...Rxd4 2.Rxd4 Qxb2+ 3.Rd2 Qb3 4.Kg3
  ³  (-0.28)   Depth: 4/9   00:00:00
1...Rxd4 2.Rxd4 Qxb2+ 3.Rd2 Qb3 4.Rd8+ Kf7 5.Qh4
  =  (-0.16)   Depth: 5/12   00:00:00
1...Rxd4 2.Rxd4 Qxb2+ 3.Rd2 Qb3 4.Rd8+ Kf7 5.Qh4 Qc2+ 6.Kg1
  =  (-0.17)   Depth: 6/14   00:00:00  60kN
1...Rxd4 2.Rxd4 Qxb2+ 3.Rd2 Qb3 4.Rd8+ Kf7 5.Qh4 Qc2+ 6.Kg3 Kg6
  =  (-0.10)   Depth: 7/16   00:00:00  215kN
1...Re8 2.Qc1 Ra8 3.Qd1 Qxd1 4.Rxd1 Ra2 5.Kg3
  =  (-0.14)   Depth: 7/19   00:00:00  433kN
1...Ra8 2.e5 c3 3.bxc3 bxc3 4.Bxc3 Bxg4 5.fxg4 Qxc3 6.exf6 Qxf6
  =  (-0.16)   Depth: 7/19   00:00:00  501kN
1...Ra8 2.e5 c3 3.bxc3 bxc3 4.Bxc3 Bxg4 5.Qe3 Rc8 6.fxg4 Rxc3
  =  (-0.12)   Depth: 8/22   00:00:00  702kN
1...Re8 2.Qc1 Ra8 3.h4 Ra2 4.g5 f5 5.e5
  ³  (-0.27)   Depth: 8/22   00:00:01  1275kN
1...Re8 2.Qc1 Ra8 3.Kg3 Qa4 4.e5 fxe5 5.Bxe5 Qc6 6.f4
  =  (-0.14)   Depth: 9/22   00:00:03  1909kN
1...Rxd4 2.Rxd4 Qxb2+ 3.Rd2 Qb3 4.Rd8+ Kf7 5.Qh4 Qa2+ 6.Kf1 Qa5 7.Rd6 Qe5
  =  (-0.16)   Depth: 9/22   00:00:03  2268kN
1...Rxd4 2.Rxd4 Qxb2+ 3.Rd2 Qb3 4.Rd8+ Kf7 5.Qh4 Qa2+ 6.Kh3 Qa5 7.Rh8 h6 8.Rh7
  =  (-0.01)   Depth: 10/26   00:00:05  4162kN
1...Re8 2.Rf2 h6 3.Kg3 Bf7 4.Qe3 Qd3 5.Kh3 Qxe3 6.Bxe3 Ra8
  =  (-0.22)   Depth: 10/26   00:00:07  7888kN
1...h6 2.Qa1 Rc8 3.Qc1 Ra8 4.Qe1 c3 5.bxc3 bxc3 6.Bxc3 Bxg4 7.fxg4 Qxc3
  =  (-0.23)   Depth: 10/26   00:00:10  10869kN
1...Rc8 2.Qc1 Ra8 3.Qe1 Ra2 4.Qe2 Qa4 5.e5 fxe5 6.Qxe5 Qd7
  ³  (-0.29)   Depth: 10/26   00:00:12  12592kN
1...Rc8 2.Qc1 Ra8 3.Qe1 Re8 4.Rf2 h6 5.Kg3 Bf7 6.Qe3 Qd3 7.Kh3 Qxe3 8.Bxe3 Ra8
  =  (-0.22)   Depth: 11/27   00:00:14  14683kN
1...Rc8 2.Qc1 Ra8 3.Qe1 Re8 4.Qc1 h6 5.Qc2 Qxc2 6.Rxc2 c3 7.Bc5 cxb2 8.Rxb2 b3
  =  (-0.14)   Depth: 12/29   00:00:26  26574kN
1...h6 2.Qc1 Ra8 3.Kg3 Ra2 4.Be3 Bf7 5.Rd8+ Kh7 6.Bd4 Be6 7.e5 fxe5 8.Bxe5
  ³  (-0.30)   Depth: 12/31   00:00:46  47138kN
1...h6 2.Qc1 Ra8 3.Kg3 Ra2 4.h4 Bf7 5.g5 hxg5 6.hxg5 Bh5 7.Qd1 Qxd1 8.Rxd1 Kf7
9.gxf6 gxf6
  =  (-0.18)   Depth: 13/31   00:00:57  58244kN
1...h6 2.Qc1 Ra8 3.Kg3 Bf7 4.Qe1 h5 5.h3 Ra2 6.e5 Bd5 7.Qe3 Qxe3 8.Bxe3 h4+
9.Kxh4 Bxf3 10.exf6 gxf6
  =  (-0.17)   Depth: 14/35   00:02:11  134074kN
1...Rc8 2.Qc1 Qa4 3.Qe1 Qb5 4.Qe3 h5 5.h3 Ra8 6.Bc5 Ra5 7.Rd8+ Kh7 8.Bd6 Ra2
  =  (-0.18)   Depth: 14/35   00:02:51  174002kN








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