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Subject: Re: Another difficult position [Hiarcs 9 = 38s]

Author: Aaron Gordon

Date: 20:39:41 12/19/03

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On December 19, 2003 at 18:18:07, Kurt Utzinger wrote:

>On December 19, 2003 at 17:36:15, Steffen Basting wrote:
>
>>Hi!
>>
>>How long does your engine need to find Rxh6!
>>
>>[D] r3rbk1/1bq2pp1/p1np1n1p/1p3P2/4P3/P1N1BBN1/1PPQ4/2KR3R w - - 0 1
>>
>>Fritz 8 needs some minutes on a PIV 3.06 and then fails high for a really long
>>time - perhaps other programs do better?
>>
>>Regards, Steffen
>
>New game
>r3rbk1/1bq2pp1/p1np1n1p/1p3P2/4P3/P1N1BBN1/1PPQ4/2KR3R w - - 0 1
>
>Analysis by Hiarcs 9: (P4 1.8/32 MB hash)
>
>1.e5 Nxe5 2.Bxb7
>  -+  (-1.58)   Depth: 1/5   00:00:00
>1.Nd5 Nxd5 2.Qxd5
>  ±  (1.09)   Depth: 1/5   00:00:00
>  ²  (0.55)   Depth: 2/10   00:00:00
>1.Nh5 Nxh5 2.Bxh5 Ne5 3.Qg2 b4 4.axb4 a5 5.b5
>  ²  (0.60)   Depth: 2/10   00:00:00
>  ²  (0.70)   Depth: 10/27   00:00:20  2617kN
>1.Rxh6 gxh6 2.Bxh6 Ne5 3.Qg5+ Ng6 4.Bxf8 Rxf8 5.Rh1 d5 6.fxg6 fxg6 7.Qxg6+ Qg7
>  ²  (0.70)   Depth: 10/31   00:00:38  4960kN
>  +-  (1.56)   Depth: 12/36   00:06:41  49562kN
>
>(Utzinger, MyTown 20.12.2003)

Just to note the speed difference, here is Hiarcs on a slightly more potent
system (Athlon XP 2.5GHz, 64mb hash, 17 seconds).

Analysis by Hiarcs 9:

1.e5 Nxe5 2.Bxb7
  -+  (-1.58)   Depth: 1/5   00:00:00
1.Nd5
  ±  (1.09)   Depth: 1/5   00:00:00
1.Nd5 Nxd5
  ±  (1.09)   Depth: 1/5   00:00:00
1.Nd5 Nxd5
  ²  (0.55)   Depth: 2/10   00:00:00
1.Nh5 Nxh5 2.Bxh5 Ne5 3.Rhg1
  ²  (0.55)   Depth: 4/11   00:00:00
1.Nh5 Nxh5 2.Bxh5 Ne5 3.Rhg1
  ²  (0.55)   Depth: 4/11   00:00:00
1.Nh5 Nxh5 2.Bxh5 Ne5 3.Rhg1
  ²  (0.55)   Depth: 4/11   00:00:00
1.Nh5 Nxh5 2.Bxh5 Ne5 3.Rhg1
  ²  (0.55)   Depth: 4/11   00:00:00
1.Nh5 Nxh5 2.Bxh5 Ne5 3.Rhg1
  ²  (0.55)   Depth: 4/11   00:00:00
1.Nh5 Nxh5 2.Bxh5 Ne5 3.Rhg1
  ²  (0.30)   Depth: 5/13   00:00:00  4kN
1.Nh5 Nxh5 2.Nd5 Qa5 3.Qxa5 Nxa5
  =  (0.14)   Depth: 5/13   00:00:00  6kN
1.Nh5 Nxh5 2.Nd5 Qa5 3.Qxa5 Nxa5
  ²  (0.39)   Depth: 6/16   00:00:00  30kN
1.Nh5 Nxh5 2.Bxh5 Na5 3.Qd4
  ²  (0.50)   Depth: 6/17   00:00:00  38kN
1.Nh5 Nxh5 2.Nd5 Qa5 3.Qg2 b4 4.Bxh5 bxa3
  ²  (0.58)   Depth: 7/18   00:00:00  91kN
1.Nh5 Nxh5 2.Bxh5 Ne5 3.Qg2 Qd7 4.Rhg1
  ±  (0.72)   Depth: 8/22   00:00:01  298kN
1.Nh5 Nxh5 2.Bxh5 Ne5 3.Bxh6 b4 4.axb4 a5 5.Qg2 axb4 6.Nd5
  ±  (0.75)   Depth: 9/27   00:00:03  898kN
1.Nh5 Nxh5 2.Bxh5 Ne5 3.Qg2 b4 4.axb4 a5 5.b5
  ²  (0.70)   Depth: 10/27   00:00:09  2617kN
1.Rxh6 gxh6
  ²  (0.70)   Depth: 10/31   00:00:17  4960kN
1.Rxh6 gxh6 2.Bxh6 Nh7 3.Nh5 Kh8 4.Bxf8 Rxf8 5.Nxb5 Qe7 6.Nxd6
  ±  (0.77)   Depth: 10/31   00:00:18  5364kN



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