Author: Dann Corbit
Date: 10:49:30 06/06/01
Go up one level in this thread
On June 06, 2001 at 00:49:21, Robin Smith wrote:
>From a recently completed game in the 24th world correspondence chess
>championship semi-finals:
>
>[D] r1qr2k1/pb2bpp1/1p2pn1p/2p4P/3P1B2/2PB1N2/PP2QPP1/1K1R3R w - -
>
>Here the move 15.Rhg1 is very strong, as it gets the rook off the long diagonal
>and threatens to charge the g-pawn down the board. But computers don't often
>like to give up material .... in this case the h pawn and after 15.Rhg1! Nxh5
>16.Bxh6! also the bishop. Can any program find 15.Rhg1? I believe it may win
>by force, and if not it certainly leaves black in big trouble, but all programs
>I tested don't find it, even over night. If that is too hard, try the position
>after 15.Rhg1 Nxh5.
Yace (which is especially good at difficult tactical positions) was unable to
solve after 4 hours:
title "Robin Smith on CCC @ 00:49:21 6/06/2001"
Stored 0 learned positions into hash table
solution Rhg1
usetime = 14399.00, mintime = 14399.00 maxtime = 14399.00 tl 14399.00 ml 0
59 0.002 -1.95 1t 1.Bxh6 gxh6 {-270}
136 0.002 0.04 1t 1.dxc5 Qxc5 {0}
210 0.003 0.05 1t 1.Qe5 cxd4 2.cxd4 {0}
498 0.004 0.23 1t 1.Be5 cxd4 2.Bxd4 {0}
1094 0.007 0.23 1. 1.Be5 cxd4 2.Bxd4 {0}
1201 0.008 0.19 2t 1.Be5 Qd7 {0}
2132 0.011 0.19 2. 1.Be5 Qd7 {0}
5268 0.025 0.14 3t 1.Be5 Qc6 2.Qd2 {0}
10039 0.039 0.14 3. 1.Be5 Qc6 2.Qd2 {0}
12888 0.050 0.10 4t 1.Be5 Qc6 2.Qd2 Qd5 {0}
33417 0.118 0.10 4. 1.Be5 Qc6 2.Qd2 Qd5 {0}
57277 0.211 0.05 5t 1.Be5 Qc6 2.Rde1 cxd4 3.Bxd4 {0}
151771 0.471 0.05 5. 1.Be5 Qc6 2.Rde1 cxd4 3.Bxd4 {0}
218425 0.702 0.04 6t 1.Be5 cxd4 2.Bxd4 Qc6 3.Qe5 Rd5 4.Qg3 {0}
650793 2.039 0.04 6. 1.Be5 cxd4 2.Bxd4 Qc6 3.Qe5 Rd5 4.Qg3 {0}
799377 2.530 0.01 7t 1.Be5 cxd4 2.Bxd4 Qc6 3.Qe5 Rac8 4.Rhe1 Qd5 {0}
1776929 5.429 0.01 7. 1.Be5 cxd4 2.Bxd4 Qc6 3.Qe5 Rac8 4.Rhe1 Qd5 {0}
2192342 6.804 0.00 8t 1.Be5 cxd4 2.Bxd4 Qc6 3.Rhe1 Rac8 4.Ne5 Qd5
5.Bc2 {0}
4577694 13.719 0.00 8. 1.Be5 cxd4 2.Bxd4 Qc6 3.Rhe1 Rac8 4.Ne5 Qd5
5.Bc2 {0}
5780994 17.441 0.00 9t 1.Be5 cxd4 2.Bxd4 Qc6 3.Rhe1 Qc7 4.Be5 Qc6
5.Bd4 Qc7H 6.Be5H Qc6H 7.Bd4HR {0}
10015636 29.191 0.00 9. 1.Be5 cxd4 2.Bxd4 Qc6 3.Rhe1 Qc7 4.Be5 Qc6
5.Bd4 Qc7 6.Be5 Qc6 7.Bd4 {0}
29942844 1:32.5 0.04 10t 1.Be5 cxd4 2.Nxd4 Bxg2 3.Rhg1 Bd5 4.Qe3 Kf8
5.Qg3 Nxh5 6.Bxg7+H Ke8H {-80}
41451120 2:05.7 0.04 10. 1.Be5 cxd4 2.Nxd4 Bxg2 3.Rhg1 Bd5 4.Qe3 Kf8
5.Qg3 Nxh5 6.Bxg7+ Ke8 {-80}
73034918 3:47.5 -0.03 11t 1.Be5 Qc6 2.Rh4 cxd4 3.Bxd4 Rd5 4.Ne5H Qc7H
5.f3H Rad8H 6.Rf4H Qd6H {0}
168493355 8:40.3 -0.03 11. 1.Be5 Qc6 2.Rh4 cxd4 3.Bxd4 Rd5 4.Ne5 Qc7 5.f3
Rad8 6.Rf4 Qd6 {0}
208387337 10:55.9 -0.03 12t 1.Be5 Qc6 2.Rh4 cxd4 3.Bxd4 Rd5 4.Ne5 Qc7 5.Bc4
Ra5 6.f4 Be4+ 7.Bd3 Rc8 8.Bxe4 Nxe4 {0}
400385326 20:48.7 -0.03 12. 1.Be5 Qc6 2.Rh4 cxd4 3.Bxd4 Rd5 4.Ne5 Qc7 5.Bc4
Ra5 6.f4 Be4+ 7.Bd3 Rc8 8.Bxe4 Nxe4 {0}
669118341 35:36.9 -0.01 13t 1.Be5 Qc6 2.Rh4 cxd4 3.Bxd4 Rd5 4.Ne5 Qc7 5.Bc4
Rd6 6.f3 Rad8 7.Rf4 a5 {0}
1039149773 53:55.4 -0.01 13. 1.Be5 Qc6 2.Rh4 cxd4 3.Bxd4 Rd5 4.Ne5 Qc7 5.Bc4
Rd6 6.f3 Rad8 7.Rf4 a5 {0}
1820626987 1:35:27 -0.02 14t 1.Be5 Qc6 2.Rh4 cxd4 3.Bxd4 Rac8 4.Rf4 Qc7
5.Ne5 {HT} {0}
352976501 3:59:59 -0.02 14u. 1.Be5 Qc6 2.Rh4 cxd4 3.Bxd4 Rac8 4.Rf4 Qc7
5.Ne5 {HT} {0}
352976501 Nodes, 634.46% Leavenodes, 24514 Nodes/sec
3687198658 eval, 50.42% score, 3241007403 genmoves, 122.01% captures le 448/499
ext: pawn 999956, rcp 18215865, chk 62201169, repchk 12942877, null 336091,
prune 250305853
htable: 3837873695 store, 0 rejected, 241921697 probe, 337.7% f/p, 21.3% f/s
entries 24999999 age 0 renew 0
egtb probes 0, found 0
solution not found
1 tested, 0 found, 0 mates
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Last modified: Thu, 15 Apr 21 08:11:13 -0700
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