Author: Dann Corbit
Date: 14:25:27 06/21/01
Go up one level in this thread
On June 21, 2001 at 17:07:17, Janos Keinrath wrote:
>
>I've checked the ECM testsuite with my program and found the following,
>interesting position (ECM.300).
>
>[D] 8/2b2k1p/2N2pp1/P2p4/3KnP2/6BP/P5P1/8 w - -
>
>The solution in the book is right:
>
>1. Kxd5! Nxg3 2.a6 Bb6 3.a4 Ne2 4.a5 Bb1 5.a7!! Bxa7
>6. Nxa7 Nxf4+ 7.Kd6! +-
>
>Any program find the solution in a reasonale time (less than 5 Min)?
Yace output:
Crafty is the magic word, Scid wants to see
Yace (Yet another chess engine) version 0.99.50.1
Type help for a (very unhelpful) list of commands
Make sure, you have a file yace.ini in the current directory, with a line:
hash 30M
or similar, otherwise Yace will only use a very small hash of 1M.
feature done=0
DBBOOK100 50000 128 20 ff 139673
entries 87381 size 1048572 size_wanted 1048576 tts3 29126
pos_learn = 1
Stored 0 learned positions into hash table
hash size wanted 300000000
Stored 0 learned positions into hash table
entries 24999999 size 299999988 size_wanted 300000000 tts3 8333332
5-men endgame table bases found
white ( 1): st 999
white ( 1): test ecm300.ci
title "ECM.300"
Stored 0 learned positions into hash table
solution Kxd5
usetime = 998.00, mintime = 998.00 maxtime = 998.00 tl 998.00 ml 0
4 0.007 -1.13 1t 1.Kxd5 Nxg3 {-190}
33 0.012 1.22 1t 1.Be1 {80}
52 0.018 1.22 1. 1.Be1 {80}
84 0.024 1.06 2t 1.Be1 f5 {80}
235 0.030 1.06 2. 1.Be1 f5 {80}
527 0.035 0.80 3t 1.Be1 Ke6 2.Ke3 {80}
1062 0.042 0.83 3t+ 1.Bh2 Ke6
1205 0.047 1.39 3t 1.Bh2 Ke6 2.a6 {80}
1300 0.053 1.39 3. 1.Bh2 Ke6 2.a6 {80}
2212 0.059 1.34 4t 1.Bh2 Ke6 2.f5+ Kd7 3.Bxc7 Kxc6 {90}
3366 0.067 1.34 4. 1.Bh2 Ke6 2.f5+ Kd7 3.Bxc7 Kxc6 {90}
5617 0.094 1.34 5t 1.Bh2 Ke6 2.f5+ Kd7 3.Bxc7 Kxc6 {90}
8416 0.104 1.34 5. 1.Bh2 Ke6 2.f5+ Kd7 3.Bxc7 Kxc6 {90}
16047 0.123 1.24 6t 1.Bh2 Ke6 2.f5+ Kd7 3.Nb8+ Bxb8 4.Bxb8 Kc6 5.g4
gxf5 6.gxf5 {90}
25080 0.151 1.24 6. 1.Bh2 Ke6 2.f5+ Kd7 3.Nb8+ Bxb8 4.Bxb8 Kc6 5.g4
gxf5 6.gxf5 {90}
44160 0.195 1.24 7t 1.Bh2 Ke6 2.f5+ Kd7 3.Nb8+ Bxb8 4.Bxb8 Kc6 5.g4
gxf5 6.gxf5H {90}
72689 0.254 1.24 7. 1.Bh2 Ke6 2.f5+ Kd7 3.Nb8+ Bxb8 4.Bxb8 Kc6 5.g4
gxf5 6.gxf5 {90}
142099 0.380 1.57 8t 1.Bh2 Ke6 2.f5+ Kd7 3.Nb8+ Kd8 4.Bxc7+ Kxc7
5.Kxd5 Nc3+ 6.Kd4 Nxa2H 7.Na6+H Kd6H {80}
216544 0.517 1.57 8. 1.Bh2 Ke6 2.f5+ Kd7 3.Nb8+ Kd8 4.Bxc7+ Kxc7
5.Kxd5 Nc3+ 6.Kd4 Nxa2 7.Na6+ Kd6 {80}
612516 1.188 1.64 9t 1.Bh2 Nd2 2.a6 Bb6+ 3.Kxd5 Nf1 4.a7 Bxa7 5.Nxa7
Nxh2 6.Nc6 {80}
830916 1.566 1.64 9. 1.Bh2 Nd2 2.a6 Bb6+ 3.Kxd5 Nf1 4.a7 Bxa7 5.Nxa7
Nxh2 6.Nc6 {80}
1432086 2.553 1.90 10t 1.Bh2 Ke6 2.f5+ Kd7 3.Nb8+ Kd8 4.Bxc7+ Kxc7
5.fxg6 hxg6 6.Na6+ Kd6 7.Nb4 f5 8.Nxd5 g5 {160}
2030855 3.578 1.90 10. 1.Bh2 Ke6 2.f5+ Kd7 3.Nb8+ Kd8 4.Bxc7+ Kxc7
5.fxg6 hxg6 6.Na6+ Kd6 7.Nb4 f5 8.Nxd5 g5 {160}
3355081 5.765 2.08 11t 1.Bh2 Ke6 2.f5+ Kd7 3.Nb8+ Kd8 4.Bxc7+ Kxc7
5.fxg6 hxg6 6.Na6+ Kd6 7.Nb4 Nc5 8.Nxd5 Ne6+
9.Kc4 {160}
4682304 7.972 2.08 11. 1.Bh2 Ke6 2.f5+ Kd7 3.Nb8+ Kd8 4.Bxc7+ Kxc7
5.fxg6 hxg6 6.Na6+ Kd6 7.Nb4 Nc5 8.Nxd5 Ne6+
9.Kc4 {160}
8440820 14.291 2.27 12t 1.Bh2 Ke6 2.f5+ Kd7 3.Nb8+ Bxb8 4.Bxb8 gxf5
5.a4H {HT}
13588958 22.885 2.27 12. 1.Bh2 Ke6 2.f5+ Kd7 3.Nb8+ Bxb8 4.Bxb8 gxf5 5.a4
22305684 37.168 2.29 13t 1.Bh2 Ke6 2.f5+ Kd7 3.Nb8+ Kd8 4.Bxc7+ Kxc7
5.Na6+ Kd6 6.Nb4 gxf5 7.Nxd5 Nc5 8.Nxf6 h6
9.Kc4 Na6 10.a4 {160}
33894251 56.043 2.29 13. 1.Bh2 Ke6 2.f5+ Kd7 3.Nb8+ Kd8 4.Bxc7+ Kxc7
5.Na6+ Kd6 6.Nb4 gxf5 7.Nxd5 Nc5 8.Nxf6 h6
9.Kc4 Na6 10.a4 {160}
50192907 1:25.6 2.41 14t 1.Bh2 Ke6 2.f5+ gxf5 3.Bxc7 Kd7 4.Kxd5 Kxc7
5.Ne7 Kb7 6.Nxf5 Nc3+ 7.Ke6 Ka6 8.Kxf6 Kxa5
9.a3 h5 {160}
80166094 2:16.8 2.41 14. 1.Bh2 Ke6 2.f5+ gxf5 3.Bxc7 Kd7 4.Kxd5 Kxc7
5.Ne7 Kb7 6.Nxf5 Nc3+ 7.Ke6 Ka6 8.Kxf6 Kxa5
9.a3 h5 {160}
115295837 3:19.6 2.41 15t 1.Bh2 Ke6 2.f5+ Kd7 3.Nb8+ Kd8 4.Bxc7+ Kxc7
5.Na6+ Kd6 6.Nb4 gxf5 7.Nxd5 Nc5 8.Nxf6 h6
9.Ne8+ Kc6 10.Ke5 Nb7 11.a6 Nc5H {HT} {160}
191041508 5:36.5 2.41 15. 1.Bh2 Ke6 2.f5+ Kd7 3.Nb8+ Kd8 4.Bxc7+ Kxc7
5.Na6+ Kd6 6.Nb4 gxf5 7.Nxd5 Nc5 8.Nxf6 h6
9.Ne8+ Kc6 10.Ke5 Nb7 11.a6 Nc5 {HT} {160}
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