Author: Frank E. Oldham
Date: 17:15:26 05/17/04
Go up one level in this thread
On May 16, 2004 at 07:46:09, Dieter Buerssner wrote:
>Does any engine without TBs find Rb6 in the first pos with convincing score?
Crafty19.10 (no TBs) takes a while but finally finds it in ply 20 ...
depth time score variation (1)
15-> 26.03 0.01 1. Kg2 Rh4 2. Kf3 Rh3+ 3. Kg2 Rh4
16 40.14 0.01 1. Kg2 Rh4 2. Kf3 Rh3+ 3. Kg2 Rh4
16 1:32 ++ 1. Kf4!!
16-> 2:07 0.40 1. Kf4 (s=2)
17 2:46 ++ 1. Kf4!!
17 3:35 1.44 1. Kf4 Kc3 2. Kg5 b2 3. Kh6 b1=Q 4.
Rxb1 Rxb1 5. g5 Rb8 6. g6 Rh8+ 7. Kg5
Kc2 8. h6 Kd3 9. Kh5 Ke3 10. Kg5
17-> 4:09 1.44 1. Kf4 Kc3 2. Kg5 b2 3. Kh6 b1=Q 4.
Rxb1 Rxb1 5. g5 Rb8 6. g6 Rh8+ 7. Kg5
Kc2 8. h6 Kd3 9. Kh5 Ke3 10. Kg5
18 6:11 ++ 1. Kf4!!
18-> 7:58 1.83 1. Kf4 Kc3 2. Kg5 b2 3. Kh6 b1=Q 4.
Rxb1 Rxb1 5. g5 Rb8 6. g6 Rh8+ 7. Kg5
Kc2 8. h6 Kd3 9. Kh5 Ke3 10. Kg5 (s=6)
19 10:25 1.68 1. Kf4 Kc3 2. Kg5 b2 3. h6 b1=Q 4.
Rxb1 Rxb1 5. h7 Rh1 6. Kg6 Kc2 7. Kg7
Kd3 8. g5 Ke4 9. g6 Kf5 10. Kf7 Rh4
11. Kg7 (s=5)
19-> 15:35 1.68 1. Kf4 Kc3 2. Kg5 b2 3. h6 b1=Q 4.
Rxb1 Rxb1 5. h7 Rh1 6. Kg6 Kc2 7. Kg7
Kd3 8. g5 Ke4 9. g6 Kf5 10. Kf7 Rh4
11. Kg7 (s=3)
20 24:38 1.68 1. Kf4 Kc3 2. Kg5 b2 3. h6 b1=Q 4.
Rxb1 Rxb1 5. h7 Rh1 6. Kg6 Kc2 7. Kg7
Kd3 8. g5 Ke4 9. g6 Kf5 10. Kf7 Rh4
11. Kg7 Rh1 (s=2)
20 74:37 ++ 1. Rb6!!
20 96:25 2.25 1. Rb6 Kc3 2. h6 b2 3. g5 Kc2 4. Kf4
b1=Q 5. Rxb1 Kxb1 6. Kf5 Kc2 7. Kg6
Kd2 8. Kh7 Rd1 9. g6 Ke3 10. g7 Rd7
11. Kg6 Rd8
20-> 96:25 2.25 1. Rb6 Kc3 2. h6 b2 3. g5 Kc2 4. Kf4
b1=Q 5. Rxb1 Kxb1 6. Kf5 Kc2 7. Kg6
Kd2 8. Kh7 Rd1 9. g6 Ke3 10. g7 Rd7
11. Kg6 Rd8 (s=2)
>in the second pos, does any engine without TBs see, that Kc3 is really much
>better than alternative moves?
>
>Regards,
>Dieter
Crafty19.10 (no TBs) selects Kc3 pretty quickly at ply 15 and stays with it...
depth time score variation (1)
14-> 16.47 -0.01 1. ... Rg1+ 2. Kf4 Rh1 3. Rc8+ Kd3
4. Rb8 Kc2 5. Rc8+ Kb1 6. Kg5 b2 7.
h6 Ka2 8. Ra8+ Kb3 9. Rb8+ Kc2 10.
Rc8+ Kd2 11. Rd8+ Kc2 12. Rc8+
15 38.33 0.10 1. ... Rg1+ 2. Kh4 Kc3 3. h6 b2 4.
Rxb2 Kxb2 5. Kh5 Rh1+ 6. Kg6 Ra1 7.
g5 Kc2 8. h7 Ra6+ 9. Kg7 Ra7+ 10. Kh6
Ra8 11. g6 <HT>
15 1:02 -0.01 1. ... Kc3 2. Kg2 Rh4 3. Rc8+ Kd2 4.
Rb8 Kc3
15-> 1:03 -0.01 1. ... Kc3 2. Kg2 Rh4 3. Rc8+ Kd2 4.
Rb8 Kc3 (s=7)
16 1:07 -0.01 1. ... Kc3 2. Kg2 Rh4 3. Rc8+ Kd2 4.
Rb8 Kc3 (s=6)
16-> 1:20 -0.01 1. ... Kc3 2. Kg2 Rh4 3. Rc8+ Kd2 4.
Rb8 Kc3 (s=4)
17 1:31 -0.01 1. ... Kc3 2. Kg2 Rh4 3. Rc8+ Kd2 4.
Rb8 Kc3 (s=3)
17-> 2:09 -0.01 1. ... Kc3 2. Kg2 Rh4 3. Rc8+ Kd2 4.
Rb8 Kc3 (s=5)
18 2:41 -0.01 1. ... Kc3 2. Kg2 Rh4 3. Rc8+ Kd2 4.
Rb8 Kc3 (s=4)
18-> 4:21 -0.01 1. ... Kc3 2. Kg2 Rh4 3. Rc8+ Kd2 4.
Rb8 Kc3 (s=4)
19 5:48 -0.01 1. ... Kc3 2. Kg2 Rh4 3. Rc8+ Kd2 4.
Rb8 Kc3 (s=3)
19-> 10:16 -0.01 1. ... Kc3 2. Kg2 Rh4 3. Rc8+ Kd2 4.
Rb8 Kc3 (s=4)
Frank
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