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Subject: Re: A position.

Author: Andrew Williams

Date: 07:13:46 08/30/01

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On August 30, 2001 at 09:44:48, Andrew Williams wrote:

>On August 30, 2001 at 08:10:54, Mogens Larsen wrote:
>
>>In a blitz correspondence game between Gandalf and Comet, the following board
>>position was reached.
>>
>>[D]r2r4/pp1q2bk/n1npb1pp/1N1Npp2/1PP2P2/PQ2P1PP/1B4B1/1R1R2K1 w - -
>>
>>Here Gandalf played 22. Nxd6. What do other engines think?
>
>I tried an old version of PostModernist on this on a PIII-450. After 2089
>seconds it switches to Nxd6:
>
>10>  52   291   8844911   1. Qc2 Qf7 2. Nxd6 Rxd6 3. b5 Bxd5 4. Bxd5 Rxd5
>10=  57   459  14038797   1. Qc2 Qf7 2. Nxd6 Rxd6 3. b5 Bxd5 4. Bxd5 Rxd5
>11>  57   790  23890665   1. Qc2 Qf7 2. Nxd6 Rxd6 3. b5 exf4 4. bxa6 fxg3
>11b  62  1603  47873134   1. fxe5 Nxe5 2. Bd4 Qc8 3. Bxa7 Qxc4 4. Qxc4 Nxc4
>11=  84  1783  54474724   1. fxe5 Nxe5 2. Bd4 Bxd5 3. Bxd5 Nc6 4. Bxg7 Qxg7
>12>  84  2089  65637999   1. Nxd6 Qxd6 2. Nf6 Bxf6 3. Rxd6 Rxd6 4. b5 Na5
>12= 114  2748  89261884   1. Nxd6 Qxd6 2. Nf6 Bxf6 3. Rxd6 Rxd6 4. b5 Na5
>13> 114  2982  97632122   1. Nxd6 Qxd6 2. Nf6 Bxf6 3. Rxd6 Rxd6 4. b5 Nc5
>
>NODES per second 33000
>
>Cheers
>
>Andrew
>

Hello again.

My latest version gets it after 1504 seconds on the PIII-450:

12>  92   782  27106678   1. fxe5 Nxe5 2. Bd4 Bxd5 3. Bxd5 Nc6 4. Bxg7 Qxg7
12b 106  1504  50421693   1. Nxd6 Qxd6 2. Nf6 Bxf6 3. Rxd6 Rxd6 4. b5 Nc5
12= 129  1798  60695729   1. Nxd6 Qxd6 2. Nf6 Bxf6 3. Rxd6 Rxd6 4. b5 Nc5

Andrew

>>
>>The game so far.
>>
>>[Event "Correspondence (15'/move)"]
>>[Site "TAFDtA"]
>>[Date "22/8/2001"]
>>[Round "1"]
>>[White "Gandalf 5.0"]
>>[Black "Comet B.37"]
>>[Result "*"]
>>
>>1. d4 f5 2. g3 Nf6 3. Bg2 g6 4. c4 d6 5. Nc3 Bg7 6. Nf3 O-O
>>7. O-O Qe8 8. d5 Na6 9. Rb1 h6 10. Nd4 Bd7 11. b4 Ng4
>>12. h3 Ne5 13. Qb3 c5 14. dxc6 Nxc6 15. Ndb5 Be6 16. Nd5
>>Qd7 17. Rd1 Kh7 18. a3 Rfd8 19. f4 Bf7 20. Bb2 e5 21. e3
>>Be6 22. Nxd6 *
>>
>>Regards,
>>Mogens



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