Author: Martin Baumung
Date: 06:38:48 09/10/04
Hello,
here's a test position I took from a game between ProDeo 1.0 and Little Goliath
3.9
[D]2rk1b1r/pR2pp1p/2np1n2/1N6/2qNP3/4BP2/P1PQ3P/4K2R b K - 0 19
Little Goliath 3.9 played 19... Qc4xa2?? and lost.
19... Qxa2 20. Nxa7 Nxa7 (20... Nxd4 21. Qxd4 21... Rc5 22. Qb4) (20... Na5 21.
Qb4) (20... Qa1+ 21. Kf2 Qxh1 22. Ndxc6+ Ke8 23. Nxc8) 21. Rxa7
Qc4 (21... Qxa7 22. Nc6+ Rxc6 23. Bxa7) 22. Qa5+ Ke8 23. Nb5 *
Which engines are smart enough NOT to take the pawn?
Crafty 19.17SE isn't after more than 3 minutes:
FEN: 2rk1b1r/pR2pp1p/2np1n2/1N6/2qNP3/4BP2/P1PQ3P/4K2R b K - 0 19
Crafty-19.17 SE [Standard]:
6 00:01 190.597 614.829 +0,69 19. ... Dc4xa2 20.Sd4xc6+ Tc8xc6 21.Sb5xa7
Tc6xc2 22.Le3b6+ Kd8e8 23.Tb7b8+ Ke8d7 24.Dd2f4
6 00:01 226.390 611.864 +0,69 19. ... Dc4xa2 20.Sd4xc6+ Tc8xc6 21.Sb5xa7
Tc6xc2 22.Le3b6+ Kd8e8 23.Tb7b8+ Ke8d7 24.Dd2f4
7 00:02 757.509 670.361 +0,34 19. ... Dc4xa2 20.Sd4xc6+ Tc8xc6 21.Sb5xa7
Tc6xc2 22.Dd2d1 Tc2xh2 23.Sa7c6+ Kd8c8 24.Th1xh2 Da2xh2
7 00:02 827.056 666.980 +0,34 19. ... Dc4xa2 20.Sd4xc6+ Tc8xc6 21.Sb5xa7
Tc6xc2 22.Dd2d1 Tc2xh2 23.Sa7c6+ Kd8c8 24.Th1xh2 Da2xh2
8 00:04 2.388.294 561.951 +0,59 19. ... Dc4xa2 20.00 Sc6xd4 21.Sb5xd4
Th8g8+ 22.Kg1h1 e7e5 23.Le3g5 Lf8e7 24.Lg5xf6 Le7xf6
8 00:04 2.681.696 595.932 +0,59 19. ... Dc4xa2 20.00 Sc6xd4 21.Sb5xd4
Th8g8+ 22.Kg1h1 e7e5 23.Le3g5 Lf8e7 24.Lg5xf6 Le7xf6
9 00:11 8.233.752 700.148 +1,12 19. ... Dc4xa2 20.Sb5xa7 Sc6a5 21.Tb7b5
Sa5c4 22.Dd2c3 Da2a3 23.Sa7c6+ Kd8e8 24.Dc3xc4 Da3xe3+
9 00:16 12.003.255 715.757 +1,12 19. ... Dc4xa2 20.Sb5xa7 Sc6a5 21.Tb7b5
Sa5c4 22.Dd2c3 Da2a3 23.Sa7c6+ Kd8e8 24.Dc3xc4 Da3xe3+
10 00:22 16.835.375 755.627 +1,17 19. ... Dc4xa2 20.Sb5xa7 Sc6xa7 21.Tb7xa7
Da2c4 22.Le3g5 Kd8e8 23.Lg5xf6 e7xf6 24.Ta7b7 Dc4c3 25.Th1g1 Dc3xd2+ 26.Ke1xd2
10 00:36 27.622.006 767.277 +1,17 19. ... Dc4xa2 20.Sb5xa7 Sc6xa7 21.Tb7xa7
Da2c4 22.Le3g5 Kd8e8 23.Lg5xf6 e7xf6 24.Ta7b7 Dc4c3 25.Th1g1 Dc3xd2+ 26.Ke1xd2
11 00:54 42.607.118 789.020 +1,25 19. ... Dc4xa2 20.Sb5xa7 Sc6xa7 21.Tb7xa7
Da2c4 22.Dd2a5+ Kd8e8 23.Sd4b5 Th8g8 24.Sb5c7+ Ke8d8 25.Le3b6 Tg8g2 26.Sc7e6+
Kd8e8 27.Se6c7+ Ke8d7
Here's the entire game for those interested:
[Event "A-2 League"]
[Site "ARAMIS"]
[Date "2004.09.10"]
[Round "1"]
[White "Pro Deo 1.0"]
[Black "Little Goliath 3.9"]
[Result "1-0"]
[Time "12:51:45"]
[TimeControl "40/1200:40/1200:40/1200"]
[Termination "normal"]
[PlyCount "90"]
[WhiteType "program"]
[BlackType "program"]
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 Qb6 7.Be3 Qxb2 {-0.03/13
36} 8.Ndb5 Qb4 {-0.07/13 76} 9.Bd2 Kd8 {+0.12/14 40} 10.Rb1 {+0.49/12 37} Qc5
{+0.27/15 60} 11.Be3 {+0.61/12 66} Qe5 {+0.07/15 39} 12.f3 {+0.62/12 73} g5
{+0.08/14 58}
13.Bc4 {+0.71/11 48} Be6 {-0.21/13 38} 14.Bxe6 {+0.55/12 54} Qxe6 {-0.17/13 37}
15.Nd4
{+0.58/11 39} Qc4 {-0.05/14 37} 16.Qd2 {+0.60/11 33} Rc8 {-0.53/13 66} 17.Rxb7
{+1.23/11
49} g4 {-0.63/13 53} 18.Ncb5 {+1.21/10 46} gxf3 {-0.46/11 61} 19.gxf3 {+1.06/8
12}
Qxa2 {-0.46/12 32} 20.Nxa7 {+1.52/10 26} Nxa7 {-0.60/12 43} 21.Rxa7 {+0.90/11
27}
Qxa7 {-2.34/13 78} 22.Nc6+ {+1.88/12 24} Rxc6 {-2.40/15 15} 23.Bxa7 {+2.03/12
11}
Rg8 {-2.40/15 15} 24.Qa5+ {+2.75/12 41} Kd7 {-2.80/14 28} 25.Rg1 {+2.68/11 29}
Rxg1+ {-2.23/15 28} 26.Bxg1 {+2.60/10 4} Rxc2 {-2.20/15 15} 27.Bb6 {+2.80/11 28}
Bh6
{-2.28/14 23} 28.Qb5+ {+2.80/11 41} Kc8 {-2.28/15 16} 29.h4 {+2.75/11 52} e5
{-2.05/13
15} 30.Qa6+ {+4.39/12 30} Kd7 {-4.11/14 16} 31.Qa4+ {+4.30/12 41} Rc6 {-4.78/15
17}
32.Qa7+ {+4.79/13 69} Ke6 {-6.30/16 30} 33.Bd8 {+4.56/12 31} Bf8 {-6.75/15 20}
34.Qb7
{+5.12/12 42} Rc5 {-7.10/15 37} 35.Qb3+ {+5.46/12 24} d5 {-7.23/15 17} 36.Qb6+
{+5.48/12
32} Bd6 {-7.69/16 20} 37.Bxf6 {+5.60/12 28} dxe4 {-7.70/15 27} 38.fxe4 {+6.08/10
6}
Rc1+ {-8.00/15 19} 39.Kd2 {+6.14/11 36} Rc7 {-8.55/16 23} 40.Bg5 {+6.35/12 43}
f6
{-8.28/16 15} 41.Bxf6 {+7.11/13 39} h6 {-9.29/15 30} 42.h5 {+6.88/12 40} Rc8
{-10.92/14
30} 43.Qb7 {+8.39/13 39} Rf8 {-11.06/15 30} 44.Bg7 {+8.87/12 31} Rd8 {-10.83/15
45}
45.Kc3 {+8.91/11 30} Rb8 {-11.26/15 40} {Schwarz gibt auf} 1-0
Cheers,
Martin
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Last modified: Thu, 15 Apr 21 08:11:13 -0700
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