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Subject: Re: Example of using chess engine in finding crushing opening novelty...

Author: Kurt Utzinger

Date: 11:00:34 01/19/06

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On January 18, 2006 at 22:25:16, Rick Hagen wrote:

>After the moves:
>
>[Event "10"/1"]
>[Site "Netherlands"]
>[Date "????.??.??"]
>[Round "?"]
>[White "New game"]
>[Black ""]
>[Result "*"]
>[PlyCount "35"]
>
>{512MB, Power2004.ctg, P4 3Ghz XP-Home GUI9} 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4.
>Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Bxf6 gxf6 10. Nd5 f5 11.
>exf5 Bxf5 12. Qf3 Nd4 13. Nc7+ Qxc7 14. Qxa8+ Ke7 15. c3 b4 16. cxb4 Qb6 17.
>Bxa6 Qxb4+ 18. Kf1 *
>
>We reach the following position:
>[D]Q4b1r/4kp1p/B2p4/4pb2/1q1n4/N7/PP3PPP/R4K1R b - - 0 18
>
>I found 23 games in my DB.
>The following moves were played:
>18...Qd2   18x
>18...Qxb2   4x
>18...Kf6    1x
>
>Black scored pretty well with Qd2: 12/18
>Qxb2 scored 50%
>
>The idea of Qd2 instead of Qxb2 seems to be to prevent white exchanging queens..
>
>However, after letting Fritz 9 ponder over this position in multi-PV mode, it
>came up with 18...Bh6!!



Engine: Rybka 1.0 Beta 32-bit (32 MB)
by Vasik Rajlich
  8.00	 0:01 	+0.53 	1...Kf6 2.Qd8+ Kg6 3.h4 h6 4.h5+ Kg7 (37.113) 27
  9.00	 0:05 	+0.39 	1...Kf6 2.Bc4 Qxb2 3.Re1 Kg6 4.h4 (131.863) 26
  9.00	 0:05 	+0.85 	1...Qxb2 2.Qb7+ Qxb7 3.Bxb7 d5 4.Rc1 Kf6 5.Rc3 (152.755) 27
 10.00	 0:07 	+0.58 	1...Qxb2 2.Qb7+ Qxb7 3.Bxb7 d5 4.Rd1 Kf6 5.Nb1 Bc2
(211.926) 29
 11.01	 0:11 	+0.96 	1...Qxb2 2.Qb7+ Qxb7 3.Bxb7 d5 4.Rd1 Kd6 5.Rc1 Be7 6.Ke1
(355.798) 35
 12.01	 0:16 	+1.15 	1...Qxb2 2.Qb7+ Qxb7 3.Bxb7 d5 4.Rd1 Kd6 5.Rc1 Be7 6.Rc3
(577.815) 36
 13.01	 0:26 	+1.11 	1...Qxb2 2.Qb7+ Qxb7 3.Bxb7 d5 4.Rd1 Kd6 5.Rc1 Be7 6.Rc3
(982.181) 39
 14.01	 0:48 	+1.30 	1...Qxb2 2.Qb7+ Qxb7 3.Bxb7 d5 4.Rd1 Kd6 5.Rc1 Be7 6.Rc3
(1.836.893) 39
 15.01	 1:42 	+1.35 	1...Qxb2 2.Qb7+ Qxb7 3.Bxb7 d5 4.Rd1 Kd6 5.Rc1 Be7 6.Rc3
(3.721.295) 37
 15.38	 5:48 	+1.76 	1...Bh6 2.Qb7+ (10.771.449) 31
 16.01	 7:30 	+1.70 	1...Bh6 2.Qb7+ (13.604.175) 30



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