Author: Andreas Stabel
Date: 02:55:57 05/13/03
Go up one level in this thread
On May 13, 2003 at 03:58:11, Andreas Stabel wrote:
>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
>
Got the eval for ply 17:
17/52 1401:35 -0.72 1. ... Qxh1+ 2. Kd2 Qg2 3. a4 a5 4. Nd5+ Ka7
5. Qe3+ c5 6. fxg7 Qxg7 7. Be5 Qg6 8. Bxh8 Nc6
9. f4 Qg2+ 10. Qe2 Qxe2+ 11. Kxe2 Bg4+ 12. Kd2 Re8
13. Re1 Rd8
17--> 1514:42 -0.72 1. ... Qxh1+ 2. Kd2 Qg2 3. a4 a5 4. Nd5+ Ka7
5. Qe3+ c5 6. fxg7 Qxg7 7. Be5 Qg6 8. Bxh8 Nc6
9. f4 Qg2+ 10. Qe2 Qxe2+ 11. Kxe2 Bg4+ 12. Kd2 Re8
13. Re1 Rd8
>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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