Author: Andreas Stabel
Date: 00:58:11 05/13/03
Go up one level in this thread
On May 09, 2003 at 17:28:27, martin fierz wrote:
>On May 09, 2003 at 17:24:34, Jorge Pichard wrote:
>
>>On May 09, 2003 at 16:45:10, martin fierz wrote:
>>
>>>i was playing in a tournament when the following crazy position turned up on the
>>>board next to me:
>>>
>>>[D]rnb2b1r/pp4pp/1kp2P2/8/5B2/1B6/PPP1QPqP/RN2K2R w KQ - 0 12
>>>
>>>we humans of course want to play Nc3 here and sac the two rooks (Nc3 Qxh1+ Kd2
>>>Qxa1), because that's what you do in this kind of position :-)
>>>in fact, it is correct to do this - Nc3! wins.
>>>is there a program which finds Nc3 AND gives it a positive score?
>>>
>>>cheers
>>> martin
>>
>>Can you show me how you can win after Nc3
>>
>>Jorge
>
>it's a very long line :-)
>
>12.Nc3 Qxh1+ 13.Kd2 Qg2 [13...Qxa1 14.Qc4!! Na6 only move 15.fxg7 Bxg7 only move
>16.Be3+ c5 17.Qb5+ mate in 13 according to fritz! 17...Kc7 18.Bf4+ Kd8 19.Bg5+
>Kc7 20.Nd5+ Kd6 21.Be7+ Ke6 22.Qe2+ Kf5 23.Qh5+ Ke6 24.Nf6+ c4 25.Bxc4+ Kxe7
>26.Qe5+ Kd8 27.Qd6+ Bd7 28.Qxd7#] 14.Bd5!! Qg4 [14...Qg6 15.Qc4+- Na6 (15...a6
>16.Bf7+-) 16.Qd4++-] 15.Qc4 g5 16.Qb3+ Ka5 only move 17.Bc7++- Ka6 18.Bc4+ b5
>19.Nxb5 Qxc4 20.Qxc4 cxb5 21.Qd3+-
>
>cheers
> martin
I started Ruffian on this after 1. Nc3:
14--> 13:55 0.00 1. ... Qxh1+ 2. Kd2 Qxa1 3. fxg7 Bxg7 4. Na4+ Ka5
5. Qh5+ Ka6 6. Nc5+ Kb6 7. Na4+ Ka6
15/46 29:23 -- ... Qxh1+
15/48 194:10 -0.68 1. ... Qxh1+ 2. Kd2 Qg2 3. a4 a5 4. Nd5+ Ka7
5. Qe3+ c5 6. fxg7 Qxg7 7. Be5 Qg6 8. Bxh8 Bf5
9. f4 Qg2+ 10. Qe2 Qg6 11. Kc3 Nc6
15--> 206:06 -0.68 1. ... Qxh1+ 2. Kd2 Qg2 3. a4 a5 4. Nd5+ Ka7
5. Qe3+ c5 6. fxg7 Qxg7 7. Be5 Qg6 8. Bxh8 Bf5
9. f4 Qg2+ 10. Qe2 Qg6 11. Kc3 Nc6
16/49 501:30 -0.50 1. ... Qxh1+ 2. Kd2 Qg2 3. a4 a5 4. Nd5+ Ka7
5. Qe3+ c5 6. fxg7 Qxg7 7. Be5 Qg6 8. Bxh8 Nc6
9. Bf6 Bf5 10. Qg3 Qh5 11. Kc1
16--> 516:35 -0.50 1. ... Qxh1+ 2. Kd2 Qg2 3. a4 a5 4. Nd5+ Ka7
5. Qe3+ c5 6. fxg7 Qxg7 7. Be5 Qg6 8. Bxh8 Nc6
9. Bf6 Bf5 10. Qg3 Qh5 11. Kc1
So Ruffian can see that Nc3 is not so bad, but no winning eval yet.
It has now been calculating nearly 24 hrs. with no new evaluation.
Regards
Andreas Stabel
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