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Subject: Re: A tough position

Author: Mogens Larsen

Date: 11:48:14 12/17/00

Go up one level in this thread


On December 17, 2000 at 14:29:20, Enrique Irazoqui wrote:

>Century 3 sees it immediately and for the good reasons. Gambit Tiger picks Qh2
>too, but doesn't see the perpetual. It misses the 0.00 evaluation. :)
>
>On a P750, 92MB hash:
>
>00:00:00.7	-1,34	8	101683	Qh2 Bxa6 Qh1+ Ke2 Re8+ Be3 Rxe3+ Kd2 Qxg2 Be2 Qxf2
>Rxa5
>00:00:00.4	-1,18	8	115517	Qh2 Bxa6 Qh1+ Ke2 Re8+ Be3 Rxe3+ Kd2 Qxg2 Be2 Qxf2
>Rxa5
>00:00:01.4	-1,22	9	295405	Qh2 Bxa6 Qh1+ Ke2 Re8+ Be3 Rxe3+ Kd2 Qxg2 Be2 Re4 Rxa5
>00:00:10.5	-1,00	10	2339267	Qh2 Bxa6 Qh1+ Ke2 Re8+ Be3 Rxe3+ Kd2 Qxg2 Be2 Re4
>Rxa5 Rd4+ Bd3 Qxf2+ Kc1
>00:00:23.6	-1,26	11	5408825	Qh2 Bxa6 Qh1+ Ke2 Re8+ Be3 Rxe3+ Kd2 Qxg2 Qf1 Rg3
>Qxg2 Rxg2 Bxb7 Nb6 Rxa5 Rxf2+
>00:00:54.0	-1,04	12	12557903	Qh2 Bxa6 Qh1+ Ke2 Re8+ Be3 Rxe3+ Kd2 Qxg2 Qf1 Qh2
>Kxe3 bxa6 Kd2 Qf4+ Kc2
>00:05:20.7	-1,58	13	77254078	Qh2 Bxa6 Qh1+ Ke2 Qxg2 b4 Re8+ Re3 Rxe3+ Bxe3 bxa6
>Rxa5 d4 Bh6 Qg4+ Kd2 Qxd1+

Gandalf picks and stays with Qh2 after 2 seconds. The evaluation is similar.

r5k1/1pqn3p/r4b2/p2p4/8/RP6/RP1BBPP1/3Q1K2 b - - 0 1

Analysis by Gandalf 4.32g:

1...Be7
  ±  (1.29)   Depth: 2   00:00:00
1...Re6 2.Rxa5 Rae8
  ±  (1.26)   Depth: 2   00:00:00
1...Re6 2.Rxa5 Rae8
  ±  (1.26)   Depth: 2   00:00:00
1...Re6 2.Rxa5 Rae8
  ±  (1.26)   Depth: 2   00:00:00
1...Re6 2.Rxa5 Rae8
  ±  (1.26)   Depth: 2   00:00:00
1...Re6 2.Rxa5 Rae8
  ±  (1.26)   Depth: 2   00:00:00
1...Re6 2.Rxa5 Rae8
  ±  (1.26)   Depth: 2   00:00:00
1...Re6 2.Rxa5 Rae8
  ±  (1.26)   Depth: 2   00:00:00
1...Re6 2.Rxa5 Rae8
  ±  (1.26)   Depth: 2   00:00:00
1...Re6 2.Rxa5 Rae8
  ±  (1.26)   Depth: 3   00:00:00
1...Re6 2.Rxa5 Rae8
  ±  (1.26)   Depth: 3   00:00:00
1...Re6 2.Rxa5 Rae8
  ±  (1.26)   Depth: 3   00:00:00
1...Re6 2.Rxa5 Rae8
  ±  (1.26)   Depth: 3   00:00:00
1...Re6 2.Rxa5 Rae8
  ±  (1.26)   Depth: 3   00:00:00
1...Re6 2.Bg4 Rea6 3.Be2
  ±  (1.24)   Depth: 4   00:00:00
1...Qh2
  ±  (1.23)   Depth: 4   00:00:00
1...Qh2 2.Bxa6 Qh1+ 3.Ke2 Re8+ 4.Be3 Rxe3+ 5.Kd2
  ±  (0.72)   Depth: 4   00:00:01
1...Qh2 2.Bxa6 Qh1+ 3.Ke2 Re8+ 4.Be3 Rxe3+ 5.Kd2 Rd3+ 6.Bxd3
  +-  (2.03)   Depth: 5   00:00:01  77kN
1...Re6
  +-  (2.01)   Depth: 5   00:00:01  77kN
1...Re6 2.Bh5 Rea6 3.Qg4+ Kh8 4.Rxa5 Rxa5 5.Rxa5 Rxa5 6.Bxa5
  ±  (1.16)   Depth: 5   00:00:01  77kN
1...Re6 2.Bg4 Rea6 3.Qf3 Qc6 4.Rxa5 Rxa5 5.Bxa5
  ±  (1.13)   Depth: 6   00:00:02  265kN
1...Qh2
  ±  (1.11)   Depth: 6   00:00:02  265kN
1...Qh2 2.Bxa6 Qh1+ 3.Ke2 Re8+ 4.Be3 Rxe3+ 5.Kd2 Qxg2 6.Kxe3
  ±  (1.02)   Depth: 6   00:00:03  265kN
1...Qh2 2.Bxa6 Qh1+ 3.Ke2 Re8+ 4.Be3 Rxe3+ 5.Kd2 Qxg2 6.Qf1
  ±  (0.89)   Depth: 7   00:00:04  575kN
1...Qh2 2.Bxa6 Qh1+ 3.Ke2 Re8+ 4.Be3 Rxe3+ 5.Kd2 Qxg2 6.Qf1
  ±  (0.92)   Depth: 8   00:00:15  2208kN
1...Qh2 2.Bxa6 Qh1+ 3.Ke2 Re8+ 4.Be3 Rxe3+ 5.Kd2 Qxg2 6.Qf1
  ±  (0.88)   Depth: 9   00:00:47  7466kN
1...Qh2 2.Bxa6 Qh1+ 3.Ke2 Re8+ 4.Be3 Rxe3+ 5.Kd2 Qxg2 6.Qf1
  ±  (0.91)   Depth: 10   00:02:10  21873kN
1...Qh2 2.Bxa6 Qh1+ 3.Ke2 Re8+ 4.Be3 Rxe3+ 5.Kd2 Qxg2 6.Qf1
  +-  (1.80)   Depth: 11   00:20:58  207495kN

Mogens.



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