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Subject: Re: Hydra - GM Adams Test position.

Author: Robert Hyatt

Date: 16:37:17 06/22/05

Go up one level in this thread


On June 22, 2005 at 04:16:37, Mark Young wrote:

>On June 21, 2005 at 15:36:10, Robert Hyatt wrote:
>
>>On June 21, 2005 at 13:16:55, Mark Young wrote:
>>
>>>[d]r2q1rk1/1pp3pp/p2b4/nP1p1p1b/3Pn3/2PB1N1P/P1QN1PP1/1RB1R1K1 w - -
>>>
>>>
>>>Best Move c4!
>>
>>
>>best, but maybe not a "!" move..
>
>I have not seen any GM analysis yet on the game. Looking at the game I feel c4
>was the best and hardest move to see in the game. a very strong positional shot.
>And much better then the other moves. IMO. We will see.
>
>Is Crafty the only program other then hydra to find this move?

I doubt it.  In fact I think someone else posted another program liked c4 even
quicker than Crafty did...


>
>I let fritz run on this position for 15 min. Fritz did not find the move.
>
>>
>>Here's crafty on my dual xeon 2.8:
>>
>>               12     1:16   0.31   1. bxa6 bxa6 2. c4 c6 3. Ne5 Kh8 4.
>>                                    Ndf3 Bxf3 5. gxf3 Ng5 6. Kg2 dxc4 7.
>>                                    Nxc4 Nxc4 8. Bxc4
>>               12     2:11   0.39   1. c4 c6 2. c5 Bc7 3. b6 Bf4 4. Nb3
>>                                    Nxb3 5. Bxf4 Bxf3 6. Rxb3 Bh5
>>               12->   2:19   0.39   1. c4 c6 2. c5 Bc7 3. b6 Bf4 4. Nb3
>>                                    Nxb3 5. Bxf4 Bxf3 6. Rxb3 Bh5 (s=2)
>>               13     3:56   0.44   1. c4 Bxf3 2. Nxf3 Nxc4 3. Bxc4 dxc4
>>                                    4. Qxc4+ Kh8 5. bxa6 bxa6 6. Ne5 Qe7
>>                                    7. Rb7 Bxe5 8. dxe5 Rab8 9. Rxb8 Rxb8
>>               13->   4:24   0.44   1. c4 Bxf3 2. Nxf3 Nxc4 3. Bxc4 dxc4
>>                                    4. Qxc4+ Kh8 5. bxa6 bxa6 6. Ne5 Qe7
>>                                    7. Rb7 Bxe5 8. dxe5 Rab8 9. Rxb8 Rxb8
>>?              14     4:24   1/37*  1. c4
>>White(1): ?
>>              time=4:26  cpu=197%  mat=0  n=447906504  fh=93%  nps=1.68M
>>              ext-> chk=6168674 cap=1072928 pp=266956 1rep=463552 mate=16278
>>              predicted=0  nodes=447906504  evals=182036392  50move=0
>>              endgame tablebase-> probes=0  hits=0
>>              SMP->  split=578  stop=67  data=5/64  cpu=8:45  elap=4:26
>>
>>White(1): c4



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