Author: Andreas Guettinger
Date: 16:36:48 06/03/05
Go up one level in this thread
On June 03, 2005 at 19:00:30, Christos Gitsis wrote:
>This is from one of my tournament games.
>
>[D] R7/6k1/P7/6pp/8/r6P/5PK1/8 w - - 1 42
>
>My opponent, playing White, set a trap for me in this position with his last
>move 42.h4.
>
>After 42...gxh4? white wins with a7 and f2-f4-f5-f6+:
>If then ...Kf7 white plays Rh8 Rxa7 Rh7+ followed by Rxa7.
>If ...Kxf6 Rf8+ wins.
>
>I suppose this is too deep for the engines, while an expert human player should
>avoid the trap.
>
>After 42...g4 the position is equal.
>
>Is there an engine that plays 42...g4?
I think most engines will find g4 as response to 42. h4. On todays hardware the
engines see quite deep in the endgame.
Crafty is fast here, it takes 7s, Yace_PB 26s and TogaII only 6s:
Crafty 19.19:
White(1): h3h4
analyze.White(1): White(1): h4
clearing hash tables
time surplus 0.00 time limit 22.50 (3:30)
depth time score variation (1)
8 0.14 0.56 1. ... gxh4 2. f3 Kf6 3. a7 Kg7 4.
Kh3 Ra4 5. Re8 Rxa7 6. Kxh4
8-> 0.17 0.56 1. ... gxh4 2. f3 Kf6 3. a7 Kg7 4.
Kh3 Ra4 5. Re8 Rxa7 6. Kxh4
9 0.42 0.60 1. ... gxh4 2. f4 Kf6 3. a7 Kg7 4.
f5 h3+ 5. Kh2 Ra5 6. Re8 Rxa7 7. Kxh3
9-> 0.54 0.60 1. ... gxh4 2. f4 Kf6 3. a7 Kg7 4.
f5 h3+ 5. Kh2 Ra5 6. Re8 Rxa7 7. Kxh3
10 0.78 0.62 1. ... gxh4 2. f4 Kf6 3. a7 Kg7 4.
f5 h3+ 5. Kh2 Ra2+ 6. Kxh3 Ra5 7. f6+
Kf7 8. Rd8 Rxa7
10-> 1.05 0.62 1. ... gxh4 2. f4 Kf6 3. a7 Kg7 4.
f5 h3+ 5. Kh2 Ra2+ 6. Kxh3 Ra5 7. f6+
Kf7 8. Rd8 Rxa7
11 2.23 0.67 1. ... gxh4 2. f4 Kf6 3. a7 Kg7 4.
f5 h3+ 5. Kh2 h4 6. f6+ Kf7 7. Rh8
Ra2+ 8. Kxh3 Rxa7
11-> 3.23 0.67 1. ... gxh4 2. f4 Kf6 3. a7 Kg7 4.
f5 h3+ 5. Kh2 h4 6. f6+ Kf7 7. Rh8
Ra2+ 8. Kxh3 Rxa7
12 4.03 +1 1. ... gxh4
12 5.62 1.60 1. ... gxh4 2. f4 Kf6 3. a7 Kg7 4.
f5 h3+ 5. Kh2 Kf7 6. Rh8 Ra2+ 7. Kxh3
<HT>
12 7.66 1.37 1. ... g4 2. Kh2 Ra1 3. Ra7+ Kf6 4.
Kg3 Ra3+ 5. Kg2 Ra2 6. Ra8 Kg6 7. Rg8+
Kf7 8. Ra8 Re2
12-> 9.10 1.37 1. ... g4 2. Kh2 Ra1 3. Ra7+ Kf6 4.
Kg3 Ra3+ 5. Kg2 Ra2 6. Ra8 Kg6 7. Rg8+
Kf7 8. Ra8 Re2
13 10.37 1.37 1. ... g4 2. Kh2 Ra1 3. Ra7+ Kf6 4.
Kg3 Ra3+ 5. Kg2 Ra2 6. Ra8 Kg6 7. Kf1
Kg7 8. Kg2 Re2
13-> 14.47 1.37 1. ... g4 2. Kh2 Ra1 3. Ra7+ Kf6 4.
Kg3 Ra3+ 5. Kg2 Ra2 6. Ra8 Kg6 7. Kf1
Kg7 8. Kg2 Re2
14 19.09 1.29 1. ... g4 2. Kh2 Ra1 3. Ra7+ Kf6 4.
Kg3 Ra3+ 5. Kg2 Ra2 6. Ra8 Kg6 7. Kf1
Kf5 8. Ke1 Kf4 9. Rf8+ Ke4
14-> 25.87 1.29 1. ... g4 2. Kh2 Ra1 3. Ra7+ Kf6 4.
Kg3 Ra3+ 5. Kg2 Ra2 6. Ra8 Kg6 7. Kf1
Kf5 8. Ke1 Kf4 9. Rf8+ Ke4
15 50.37 1.51 1. ... g4 2. Kf1 Ra2 3. a7 Kh7 4. Ke1
Kg7 5. Kd1 Kh7 6. Kc1 Ra3 7. Kc2 Ra2+
8. Kb3 Ra1 9. Kb2 Rd1
15-> 1:08 1.51 1. ... g4 2. Kf1 Ra2 3. a7 Kh7 4. Ke1
Kg7 5. Kd1 Kh7 6. Kc1 Ra3 7. Kc2 Ra2+
8. Kb3 Ra1 9. Kb2 Rd1
16 1:25 1.48 1. ... g4 2. Kf1 Ra2 3. a7 Kh7 4. Ke1
Kg7 5. Kd1 Kh7 6. Kc1 Ra3 7. Kd2 Ra1
8. Ke3 Kg7 9. Kf4 Ra2
16-> 1:49 1.48 1. ... g4 2. Kf1 Ra2 3. a7 Kh7 4. Ke1
Kg7 5. Kd1 Kh7 6. Kc1 Ra3 7. Kd2 Ra1
8. Ke3 Kg7 9. Kf4 Ra2
17 2:36 1.51 1. ... g4 2. Kf1 Ra2 3. a7 Kh7 4. Ke1
Kg7 5. Kd1 Kh7 6. Kc1 Ra3 7. Kd2 Kg7
8. Kc2 Ra5 9. Kb3 Rb5+ 10. Kc4 Rb2
Yace_PB:
1 0.001 -0.42 1t 42...gxh4 {0}
22 0.001 -0.42 1. 42...gxh4 {0}
96 0.001 -0.61 2t 42...gxh4 43.a7 h3+ 44.Kh2 {0}
199 0.001 -0.61 2. 42...gxh4 43.a7 h3+ 44.Kh2 {0}
408 0.001 -0.48 3t 42...gxh4 43.a7 h3+ 44.Kh2 Kf6 {0}
590 0.001 -0.48 3. 42...gxh4 43.a7 h3+ 44.Kh2 Kf6 {0}
938 0.002 -0.69 4t 42...gxh4 43.a7 h3+ 44.Kh2 h4 45.f4 {0}
1178 0.002 -0.69 4. 42...gxh4 43.a7 h3+ 44.Kh2 h4 45.f4 {0}
1830 0.002 -0.67 5t 42...gxh4 43.a7 h3+ 44.Kh2 Kh7 45.f3 Kg7 {0}
2692 0.003 -0.67 5. 42...gxh4 43.a7 h3+ 44.Kh2 Kh7 45.f3 Kg7 {0}
7263 0.005 -0.76 6t 42...gxh4 43.a7 h3+ 44.Kh2 h4 45.f3 Kh7 46.f4H
{0}
9038 0.007 -0.76 6. 42...gxh4 43.a7 h3+ 44.Kh2 h4 45.f3 Kh7 46.f4
{0}
19790 0.013 -0.64 7t 42...gxh4 43.a7 h3+ 44.Kh2 h4 45.f3 Kh7 46.f4
Kg6 {0}
23185 0.014 -0.64 7. 42...gxh4 43.a7 h3+ 44.Kh2 h4 45.f3 Kh7 46.f4
Kg6 {0}
52784 0.040 -0.75 8t 42...gxh4 43.a7 h3+ 44.Kh2 Kh7 45.f3 Kg7 46.f4
Kf7 47.f5 {0}
59614 0.044 -0.75 8. 42...gxh4 43.a7 h3+ 44.Kh2 Kh7 45.f3 Kg7 46.f4
Kf7 47.f5 {0}
117726 0.080 -0.87 9t 42...gxh4 43.a7 Kh7 44.f3 Ra1 45.f4 Ra3 46.Kh2
Kg7 47.f5 {0}
131704 0.087 -0.87 9. 42...gxh4 43.a7 Kh7 44.f3 Ra1 45.f4 Ra3 46.Kh2
Kg7 47.f5 {0}
213930 0.141 -0.78 10t 42...gxh4 43.a7 Kh7 44.f3 Ra1 45.Kh2 Kg7 46.Kh3
Rh1+ 47.Kg2 Ra1 48.Kf2 {0}
248116 0.164 -0.78 10. 42...gxh4 43.a7 Kh7 44.f3 Ra1 45.Kh2 Kg7 46.Kh3
Rh1+ 47.Kg2 Ra1 48.Kf2 {0}
502434 0.316 -0.71 11t 42...gxh4 43.a7 Ra1 44.f3 Kh7 45.Kh2H Kg7H
46.Kh3H Rh1+H 47.Kg2H Ra1H 48.Kh2H Rg1H {HT}
550102 0.347 -0.71 11. 42...gxh4 43.a7 Ra1 44.f3 Kh7 45.Kh2 Kg7 46.Kh3
Rh1+ 47.Kg2 Ra1 48.Kh2 Rg1
1206923 0.786 -0.68 12t 42...gxh4 43.a7 Ra1 44.f3 Kh7 45.Kh2 Ra3 46.Kh3
Rxf3+ 47.Kxh4 Ra3 48.Kg5 Ra5+ 49.Kf4 Ra4+
50.Kf5 h4H {0}
1275909 0.828 -0.68 12. 42...gxh4 43.a7 Ra1 44.f3 Kh7 45.Kh2 Ra3 46.Kh3
Rxf3+ 47.Kxh4 Ra3 48.Kg5 Ra5+ 49.Kf4 Ra4+
50.Kf5 h4 {0}
1820734 1.225 -0.69 13t 42...gxh4 43.a7 Ra1 44.f3 Kh7 45.Kh2 Ra3 46.f4
Kg7 47.Kg2 Rg3+ 48.Kh1 Ra3 49.Kh2 h3 50.Re8H
Rxa7H 51.Kg1H {HT}
1978567 1.330 -0.69 13. 42...gxh4 43.a7 Ra1 44.f3 Kh7 45.Kh2 Ra3 46.f4
Kg7 47.Kg2 Rg3+ 48.Kh1 Ra3 49.Kh2 h3 50.Re8
Rxa7 51.Kg1
6186588 4.618 -0.58 14t 42...gxh4 43.a7 Ra1 44.f3 Kh7 45.f4 Ra3 46.Kh1
Ra2 47.f5 Kg7H 48.Re8H Rxa7H 49.Kh2H {HT}
6492601 4.806 -0.58 14. 42...gxh4 43.a7 Ra1 44.f3 Kh7 45.f4 Ra3 46.Kh1
Ra2 47.f5 Kg7 48.Re8 Rxa7 49.Kh2
7818420 5.902 -0.98 15-- 42...gxh4 43.a7 Ra1 44.f3 Kh7 45.f4 Ra3 46.f5
h3+ 47.Kh2 Kg7 48.f6+ Kf7 49.Rh8 Ra2+ 50.Kxh3
Rh2+ 51.Kxh2 Kxf6
8002044 6.072 -0.98 15t 42...gxh4 43.a7 {HT}
9844318 8.136 -0.98 15. 42...gxh4 43.a7
12624449 11.096 -1.38 16-- 42...gxh4 43.a7 Ra1 44.f4 Ra3 45.f5 Ra1
15614107 13.000 -2.38 16-- 42...gxh4 43.a7 Ra1 44.f4 Ra3 45.f5 h3+ 46.Kh2
Kh7 47.f6 Ra2+ 48.Kxh3 Ra3+ 49.Kh2 Ra4 50.f7 Ra5
23673684 18.626 -3.06 16t 42...gxh4 43.a7 Ra1 44.f4 Ra3 45.f5 h3+ 46.Kh2
Ra2+ 47.Kxh3 Ra3+ 48.Kh4 Ra4+ 49.Kxh5 Ra1
50.Kg4 Ra4+ 51.Kf3 Ra3+ 52.Kf4 Ra4+ 53.Ke5 Ra6
54.Ke4 Ra4+ 55.Kd5 Kf7H 56.Kc5H {HT}
30048598 25.634 -3.05 16t+ 42...g4 43.a7
51295175 38.932 -1.43 16t 42...g4 43.Kf1 Ra2 44.a7 Kh7 45.Ke1 Kg7 46.Kd1
Kh7 47.Kc1 Kg7 48.Kb1 Ra4 49.Kc2 Ra3 50.Kb2
Ra6H 51.Kb3H {-80}
52734704 39.966 -1.43 16. 42...g4 43.Kf1 Ra2 44.a7 Kh7 45.Ke1 Kg7 46.Kd1
Kh7 47.Kc1 Kg7 48.Kb1 Ra4 49.Kc2 Ra3 50.Kb2 Ra6
51.Kb3 {-80}
58695134 43.816 -1.43 17t 42...g4 43.Kf1 Ra2 44.a7 Kh7 45.Ke1 Kg7 46.Kd1
Kh7 47.Kc1 Kg7 48.Kb1 Ra4 49.Kc2 Ra3 50.Kb2 Ra6
51.Kc2H Kh7H {HT}
62389578 47.057 -1.43 17. 42...g4 43.Kf1 Ra2 44.a7 Kh7 45.Ke1 Kg7 46.Kd1
Kh7 47.Kc1 Kg7 48.Kb1 Ra4 49.Kc2 Ra3 50.Kb2 Ra6
51.Kc2 Kh7
74572789 55.870 -1.46 18t 42...g4 43.Kf1 Ra2 44.a7 Kh7 45.Ke1 Kg7 46.Kd1
Kh7 47.Kc1 Kg7 48.Kb1 Ra4 49.Kc2 Ra3 50.Kd2
Ra2+ 51.Ke3 {HT}
83647463 1:05.0 -1.46 18. 42...g4 43.Kf1 Ra2 44.a7 Kh7 45.Ke1 Kg7 46.Kd1
Kh7 47.Kc1 Kg7 48.Kb1 Ra4 49.Kc2 Ra3 50.Kd2
Ra2+ 51.Ke3
102308061 1:19.3 -1.46 19t 42...g4 43.Kf1 Ra2 44.a7 Kh7 45.Ke1 Kg7 46.Kd1
Kh7 47.Kc1 Kg7 48.Kb1 Ra4 49.Kc2 Ra3 50.Kd2
Ra2+ 51.Ke3 Ra4 52.Ke2 Kh7H {HT}
119636504 1:36.8 -1.46 19. 42...g4 43.Kf1 Ra2 44.a7 Kh7 45.Ke1 Kg7 46.Kd1
Kh7 47.Kc1 Kg7 48.Kb1 Ra4 49.Kc2 Ra3 50.Kd2
Ra2+ 51.Ke3 Ra4 52.Ke2 Kh7
TogaII:
1 +1.13 gxh4 (0.00)
2 +1.18 gxh4 f3 Ra2+ Kh3 (0.00)
3 +1.11 gxh4 f3 Kf6 (0.00)
4 +1.21 gxh4 a7 h3+ Kh2 Kf7 f4 (0.01)
5 +1.19 gxh4 a7 h3+ Kh2 h4 f4 Kf7 (0.01)
6 +1.35 gxh4 a7 h3+ Kh2 h4 f4 Kf7 f5 (0.02)
7 +1.21 gxh4 a7 h3+ Kg1 Ra2 Kh2 Ra3 f4 Kf7 (0.03)
8 +1.42 gxh4 f3 h3+ Kxh3 Rxf3+ Kh4 Rf5 a7 Ra5 Kg3 Kf7 (0.05)
9 +1.35 gxh4 a7 h3+ Kg1 Ra2 Kh2 Ra3 f4 h4 f5 Kf7 (0.11)
10 +1.27 gxh4 a7 h3+ Kg1 Ra2 Kh2 Ra3 f4 h4 f5 Kf7 Kg1 (0.16)
11 +1.23 gxh4 f3 h3+ Kxh3 Rxf3+ Kh4 Rf5 Kg3 Kf7 a7 Ra5 Kf4 h4 Ke4 (0.31)
12 +1.37 gxh4 a7 Ra1 f3 Ra3 Kh2 Ra1 f4 Ra3 f5 Kf7 Kg2 h3+ Kh2 (0.46)
13 +1.37 gxh4 a7 Ra1 f3 Ra3 Kh2 Ra1 Kh3 Rh1+ Kg2 Ra1 f4 Ra3 f5 h3+ Kh2 Kf7
(0.61)
14 +1.25 gxh4 a7 h3+ Kh2 Kh7 f3 Kg7 Kg3 Kh7 Kxh3 Rxf3+ Kg2 Ra3 Kf2 Kg7 Ke2 h4
(2.23)
15 +3.30 gxh4 a7 Ra1 f4 Ra3 f5 Rg3+ Kh2 Ra3 f6+ Kf7 Rh8 Kxf6 a8=Q Rxa8 Rxa8 Kf5
Kg2 (3.72)
15 +1.81 g4 Kf1 Ra2 a7 Kh7 Ke1 Kg7 Kd1 Kh7 Kc1 Kg7 Kb1 Ra5 Kb2 Rb5+ Kc2 Kf7
(6.13)
16 +1.88 g4 Kf1 Ra2 a7 Kh7 Ke1 Kg7 Kd1 Kh7 Kc1 Kg7 Kb1 Ra5 Kb2 Rb5+ Kc2 Rc5+
Kd2 Kf7 (6.62)
17 +1.96 g4 Kf1 Ra2 a7 Kh7 Ke1 Kg7 Kd1 Kh7 Kc1 Kg7 Kb1 Ra5 Kb2 Rb5+ Kc2 Rc5+
Kb3 Rb5+ Kc4 Rb2 (8.54)
18 +1.96 g4 Kf1 Ra2 a7 Kh7 Ke1 Kg7 Kd1 Kh7 Kc1 Ra6 Kc2 Kg7 Kb2 Rb6+ Kc3 Ra6 Kb3
Rb6+ Kc4 Rb2 (10.26)
19 +1.96 g4 Kf1 Ra2 a7 Kh7 Ke1 Kg7 Kd1 Kh7 Kc1 Ra6 Kc2 Kg7 Kb2 Ra4 Kc3 Ra6 Kb3
Rb6+ Kc4 Rb2 (13.20)
20 +1.96 g4 Kf1 Ra2 a7 Kh7 Ke1 Kg7 Kd1 Kh7 Kc1 Ra6 Kc2 Kg7 Kb2 Ra4 Kc3 Ra3+ Kd2
Ra2+ Kd3 Kh7 Ke3 Kg7 (17.74)
21 +1.96 g4 Kf1 Ra2 a7 Kh7 Ke1 Kg7 Kd1 Kh7 Kc1 Ra6 Kc2 Kg7 Kb2 Ra4 Kb3 Ra5 Kc4
Ra3 Kd4 Ra2 Ke3 (25.44)
22 +1.96 g4 Kf1 Ra2 a7 Kh7 Ke1 Kg7 Kd1 Kh7 Kc1 Ra6 Kc2 Kg7 Kb2 Ra4 Kb3 Ra5 Kc3
Ra2 Kd3 Kh7 Ke3 Kg7 (44.20)
regards
Andy
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.