Author: Dieter Buerssner
Date: 11:58:43 01/05/02
Go up one level in this thread
On January 05, 2002 at 02:18:52, Scott Gasch wrote:
>I just watched an interesting game on ICC between my engine (monsoon) and
>Steve's (Chesterx).
I agree, very interesting.
>In the game monsoon is ahead by a few pawns but ends up
>losing because its king is out of position and chester is able to queen a pawn
>with the help of its knight. Here's a position:
>
>[D]2n3k1/p4p2/2N5/P5pp/1P6/5K2/8/8 b - - 0 34
[...]
>My question is this: how deep does
>your engine need to search to realize the danger in position 1?
I believe, Yace would have lost this game similar to Monsoon at this time
control. I show some analysis with more time.
Yace, my current version, K6-2 475, 30 M hash, all 4-men TBs, besides KPPKP no
relevant 5-men TBs. I cleared the hash before every new analysis, to get
reproducable conditions.
1264707 8.545 2.77 10. 34...Kf8 35. b5 Ke8 36. Nd4 f6 37. Ke4 h4 38.
Kf5 Kf7 39. Ke4 {160}
1490605 9.808 2.37 11-- 34...Kf8 35. b5 Ke8 36. Nxa7 Nxa7 37. b6 Nc6
38. a6 Ne5+ 39. Kg2 g4 40. b7 Nd7 41. a7 h4
{420}
1608407 10.505 1.97 11t 34...Kf8 35. b5 h4 36. a6 f5 37. Nxa7 g4+ 38.
Kf4 h3 39. b6 Nxb6 40. Kxf5 {80}
1669058 10.825 1.98 11t+ 34...h4 35. Nxa7 Nxa7 36. Kg2
2196967 13.807 2.89 11t 34...h4 35. b5 f5 36. b6 axb6 37. a6 g4+ 38.
Kg2 f4 39. a7 Nxa7 40. Nxa7 Kf7 {-20}
2578051 16.325 2.89 11. 34...h4 35. b5 f5 36. b6 axb6 37. a6 g4+ 38.
Kg2 f4 39. a7 Nxa7 40. Nxa7 Kf7 {-20}
3288141 20.653 2.49 12-- 34...h4 35. b5 f5 36. Nd4 Nd6 37. b6 g4+ 38.
Kf4 axb6 39. a6 Nf7 40. Nxf5 g3 {160}
3947943 24.556 1.79 12t 34...h4 35. b5 f5 36. Nxa7 g4+ 37. Kf4 Nxa7 38.
b6 Nc6 39. a6 Nb4 40. a7 Nd5+ 41. Kxf5 Ne3+ 42.
Ke4 Nf5H {340}
5841498 35.212 1.79 12. 34...h4 35. b5 f5 36. Nxa7 g4+ 37. Kf4 Nxa7 38.
b6 Nc6 39. a6 Nb4 40. a7 Nd5+ 41. Kxf5 Ne3+ 42.
Ke4 Nf5 {340}
6530792 40.156 1.39 13-- 34...h4 35. b5 f5 36. Nxa7 g4+ 37. Kf4 g3 38.
b6 Nxb6 39. axb6 h3
7570442 46.779 0.39 13-- 34...h4 35. b5 f5 36. Nxa7 g4+ 37. Ke2 h3 38.
b6 Nd6 39. a6 h2 40. b7 h1=Q 41. b8=Q+ Ne8 42.
Qxe8+ Kh7 {-260}
8497626 52.603 0.18 13t 34...h4 35. b5 h3 36. Nxa7 g4+ 37. Kg3 Nd6 38.
b6 f5 39. Nc6 Kg7 40. a6 Ne4+ 41. Kh2 f4 {80}
8990930 55.631 0.19 13t+ 34...Kf8 35. b5 Ke8 36. Nxa7 Nd6 37. Nc6
9829819 1:00.4 0.34 13t 34...Kf8 35. b5 Ke8 36. Nxa7 Nd6 37. b6 Kd7 38.
a6 f5 39. Kg2 Ne4 40. b7 Kc7 41. Nc6 {80}
10378174 1:03.7 0.35 13t+ 34...f5 35. b5 g4+ 36. Kg3 Kf7 37. a6 Nb6 38.
Kg2
12156584 1:14.7 0.68 13t 34...f5 35. b5 f4 36. a6 Kf7 37. Nxa7 Nb6 38.
Nc6 Ke6 39. Ke4 Nc4 40. Nd4+ Kd6 41. Nf3 {80}
16854540 1:41.7 0.69 13t+ 34...g4+ 35. Kg3 a6 36. b5 axb5 37. Kh4
18180061 1:49.3 0.92 13t 34...g4+ 35. Kg3 a6 36. Nb8 Nd6 37. Nxa6 Nf5+
38. Kh2 h4 39. b5 Nd6 40. Nc7 f5 41. a6 f4 {80}
18493962 1:50.9 0.93 13t+ 34...a6 35. Kg3
20208454 2:00.4 1.52 13t 34...a6 35. Kg3 f5 36. Nb8 Na7 37. Nxa6 Nc6 38.
Kf3 Kf7 39. Ke2 Ke6H 40. Nc5+H Kd5H 41. Nd3H
{80}
20528370 2:02.3 1.52 13. 34...a6 35. Kg3 f5 36. Nb8 Na7 37. Nxa6 Nc6 38.
Kf3 Kf7 39. Ke2 Ke6 40. Nc5+ Kd5 41. Nd3 {80}
23567963 2:18.8 1.34 14t 34...a6 35. Nb8 Na7 36. Nxa6 Nc6 37. Nc5 Nxb4
38. Ne4 g4+ 39. Kf4 Kg7 40. Kg5 Kf8 41. Kxh5 f5
{80}
30548154 3:00.2 1.34 14. 34...a6 35. Nb8 Na7 36. Nxa6 Nc6 37. Nc5 Nxb4
38. Ne4 g4+ 39. Kf4 Kg7 40. Kg5 Kf8 41. Kxh5 f5
{80}
34757312 3:24.6 1.02 15t 34...a6 35. Nb8 Na7 36. Nxa6 Nc6 37. Nc7 Nxb4
38. a6 Nc6 39. Nb5 f5 40. a7 Nxa7 41. Nxa7 h4
42. Nc6 Kf7 {-100}
54594358 5:26.5 1.02 15. 34...a6 35. Nb8 Na7 36. Nxa6 Nc6 37. Nc7 Nxb4
38. a6 Nc6 39. Nb5 f5 40. a7 Nxa7 41. Nxa7 h4
42. Nc6 Kf7 {-100}
66398755 6:35.3 1.10 16t 34...a6 35. Nb8 Na7 36. Nxa6 Nc6 37. Nc7 Nxb4
38. a6 Nxa6 39. Nxa6 f5 40. Kg3 Kf7 41. Nb4 Ke6
42. Nc6 Kd5 {-100}
108590227 10:50.8 1.10 16. 34...a6 35. Nb8 Na7 36. Nxa6 Nc6 37. Nc7 Nxb4
38. a6 Nxa6 39. Nxa6 f5 40. Kg3 Kf7 41. Nb4 Ke6
42. Nc6 Kd5 {-100}
After the game move 34...Kg7:
676542 4.206 -1.95 10. 35. b5 h4 36. a6 f5 37. Nxa7 g4+ 38. Kf4 h3 39.
b6 Nxb6 40. Kxf5 {-80}
1000400 5.754 -1.55 11++ 35. b5 h4 36. a6 f5 37. Nxa7 Nxa7 38. b6 h3 39.
bxa7 h2 40. Kg2 h1=R 41. a8=Q g4 {421}
1662252 9.201 -0.97 11t 35. b5 g4+ 36. Kf4 f5 37. a6 h4 38. Nd4 h3 39.
Nxf5+ Kf8 40. Kxg4 h2 41. Ng3 Ke7 {0}
1711967 9.453 -0.97 11. 35. b5 g4+ 36. Kf4 f5 37. a6 h4 38. Nd4 h3 39.
Nxf5+ Kf8 40. Kxg4 h2 41. Ng3 Ke7 {0}
3658284 20.156 -0.57 12++ 35. b5 g4+ 36. Kg2 h4 37. Nxa7 Nxa7 38. b6 h3+
39. Kh2 f5 40. bxa7 g3+ 41. Kxg3 f4+ 42. Kxf4
h2 43. a8=Q h1=R
4997067 27.602 -0.25 12t 35. b5 Kf6 36. Nxa7 Nd6 37. b6 Ke6 38. a6 Kd7
39. Kg2 f5 40. Kf3 h4 41. Nc6H {-80}
5069313 27.944 -0.25 12. 35. b5 Kf6 36. Nxa7 Nd6 37. b6 Ke6 38. a6 Kd7
39. Kg2 f5 40. Kf3 h4 41. Nc6 {-80}
8330805 45.517 -0.02 13t 35. b5 h4 36. Nxa7 Nd6 37. b6 h3 38. Kg3 g4 39.
Nb5 Ne4+ 40. Kxg4 h2 41. b7 Nf6+ 42. Kg3 h1=Q
43. b8=Q {0}
8518939 46.483 -0.02 13. 35. b5 h4 36. Nxa7 Nd6 37. b6 h3 38. Kg3 g4 39.
Nb5 Ne4+ 40. Kxg4 h2 41. b7 Nf6+ 42. Kg3 h1=Q
43. b8=Q {0}
16747524 1:34.0 0.38 14++ 35. b5 h4 36. Nxa7 Nd6 37. a6 h3 38. Kg3 Kf6
39. Kxh3 g4+ 40. Kxg4H Ke5H {HT}
17362948 1:37.6 0.38 14t 35. b5 h4 36. Nxa7 Nd6 37. a6 h3 38. Kg3 g4 39.
Kh2 Nc4 40. Nc8 Nd2H 41. a7H Nf3+H 42. Kg3H h2H
43. a8=BH h1=QH 44. b6H {HT} {-731}
17789108 1:39.9 0.38 14. 35. b5 h4 36. Nxa7 Nd6 37. a6 h3 38. Kg3 g4 39.
Kh2 Nc4 40. Nc8 Nd2 41. a7 Nf3+ 42. Kg3 h2 43.
a8=B h1=Q 44. b6 {HT} {-731}
33535274 3:09.5 0.78 15++ 35. b5 h4 36. Nxa7 Nd6 37. a6 h3 38. Kg3 g4 39.
Kh2 Nc4 40. Nc8 Nd2 41. a7 Nf3+ 42. Kg3 h2 43.
Kg2 h1=Q+ 44. Kxh1 {HT} {0}
51948553 4:55.1 1.05 15t 35. b5 g4+ 36. Kg2 Nb6 37. Nxa7 Nd5 38. Nc6 Nc7
39. b6 Na6 40. b7 h4 41. b8=Q Nxb8 42. Nxb8 h3+
43. Kh2 f5 {180}
53021887 5:00.9 1.05 15. 35. b5 g4+ 36. Kg2 Nb6 37. Nxa7 Nd5 38. Nc6 Nc7
39. b6 Na6 40. b7 h4 41. b8=Q Nxb8 42. Nxb8 h3+
43. Kh2 f5 {180}
After the response in the game 35...h4:
817785 4.970 0.16 10. 36. Nxa7 Nd6 37. a6 h3 38. Kg3 g4 39. b6 Ne4+
40. Kxg4 h2 41. b7 h1=Q 42. b8=Q Qh6 {0}
1401547 7.980 0.00 11t 36. Nxa7 Nd6 37. a6 h3 38. Kg3 g4 39. b6 Ne4+
40. Kxg4 h2 41. b7 Nf6+ 42. Kg3 h1=Q 43. b8=Q
{0}
1555090 8.761 0.00 11. 36. Nxa7 Nd6 37. a6 h3 38. Kg3 g4 39. b6 Ne4+
40. Kxg4 h2 41. b7 Nf6+ 42. Kg3 h1=Q 43. b8=Q
{0}
3322798 18.325 -0.01 12t 36. Nxa7 Nd6 37. Kg2 Kf6 38. a6 Ke6 39. b6 Kd7
40. Nb5 h3+ 41. Kxh3 g4+ 42. Kxg4 Nxb5 {-260}
4155865 22.834 -0.01 12. 36. Nxa7 Nd6 37. Kg2 Kf6 38. a6 Ke6 39. b6 Kd7
40. Nb5 h3+ 41. Kxh3 g4+ 42. Kxg4 Nxb5 {-260}
6580462 36.568 0.39 13++ 36. Nxa7 Nd6 37. Kg2 Kf6 38. a6 Ke6 39. b6 Kd7
40. Nb5 Ke6 41. b7 Ke5
8269045 45.446 1.39 13++ 36. Nxa7 Nd6 37. Kg2 Kf6 38. a6 Ke6 39. b6 Kd7
40. Nb5 h3+ 41. Kxh3 f5 42. a7 Ne4
11354701 1:03.3 1.67 13t 36. Nxa7 Nd6 37. a6 h3 38. Kg3 g4 39. Kh2 Ne4
40. Nc8 Nd2H 41. a7H Nf3+H 42. Kg3H h2H 43.
a8=NH {HT}
12389936 1:09.3 1.67 13. 36. Nxa7 Nd6 37. a6 h3 38. Kg3 g4 39. Kh2 Ne4
40. Nc8 Nd2 41. a7 Nf3+ 42. Kg3 h2 43. a8=N
17692424 1:41.5 2.07 14++ 36. Nxa7 Nd6 37. a6 h3 38. Kg3 g4 39. Kh2 Ne4
40. Nc8 Nd2 41. a7 Kg8 42. a8=Q Nf3+ 43. Qxf3
{HT} {1181}
24696539 2:22.7 2.30 14t 36. Nxa7 Nd6 37. Kg2 h3+ 38. Kxh3 Ne4 39. a6
Nf2+ 40. Kg3 Ne4+ 41. Kh2 Nc5 42. Nc8 Ne6 43.
b6 Nd4 44. Nd6 {0}
28381332 2:45.2 2.30 14. 36. Nxa7 Nd6 37. Kg2 h3+ 38. Kxh3 Ne4 39. a6
Nf2+ 40. Kg3 Ne4+ 41. Kh2 Nc5 42. Nc8 Ne6 43.
b6 Nd4 44. Nd6 {0}
40572780 3:59.6 2.70 15++ 36. Nxa7 Nd6 37. Kg2 h3+ 38. Kxh3 Ne4 39. a6
Nf2+ 40. Kg3 Nh1+ 41. Kf3 g4+ 42. Kxg4 Kf6
55237662 5:31.5 3.64 15t 36. Nxa7 Nd6 37. Kg2 h3+ 38. Kxh3 f5 39. a6 g4+
40. Kh2 g3+ 41. Kg2 f4 42. b6 Nf5 43. b7 Nh4+
44. Kh3 g2 45. b8=Q g1=Q 46. Kxh4 {340}
63820352 6:25.4 3.64 15. 36. Nxa7 Nd6 37. Kg2 h3+ 38. Kxh3 f5 39. a6 g4+
40. Kh2 g3+ 41. Kg2 f4 42. b6 Nf5 43. b7 Nh4+
44. Kh3 g2 45. b8=Q g1=Q 46. Kxh4 {340}
101465895 10:29.0 4.04 16++ 36. Nxa7 Nd6 37. Kg2 h3+ 38. Kxh3 f5 39. a6 g4+
40. Kh2 g3+ 41. Kg2 f4 42. b6 f3+ 43. Kxf3 Kf6
157040258 16:18.3 4.90 16t 36. Nxa7 Nd6 37. a6 h3 38. Kg3 f5 39. Kxh3 g4+
40. Kh2H g3+H 41. Kxg3H Kg6H 42. Kg2H Ne8H 43.
b6H Nf6H {HT} {80}
175787019 18:22.4 4.90 16. 36. Nxa7 Nd6 37. a6 h3 38. Kg3 f5 39. Kxh3 g4+
40. Kh2 g3+ 41. Kxg3 Kg6 42. Kg2 Ne8 43. b6 Nf6
{HT} {80}
So, I think eventually here, the game result is clear.
Regards,
Dieter
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