Author: Dann Corbit
Date: 12:14:18 10/31/01
Go up one level in this thread
On October 31, 2001 at 13:59:21, Gerd Isenberg wrote:
>This posision occurs in a game SOS12/2000-IsiChess 1-0 (15min):
>
>[D] 2k5/pp3ppp/P1n1r3/2bN4/5B2/1Q4Pq/1P3P2/2R3K1 b
>
>Bxf2 is draw. Is b6 a looser?
After b6 we have this:
[D]2k5/p4ppp/Ppn1r3/2bN4/5B2/1Q4Pq/1P3P2/2R3K1 w - -
Yace says:
black ( 1): setboard 2k5/p4ppp/Ppn1r3/2bN4/5B2/1Q4Pq/1P3P2/2R3K1 w - -
Stored 8 learned positions into hash table
white ( 1): go
usetime = 179.00, mintime = 179.00 maxtime = 179.00 tl 179.00 ml 0
5 0.000 -1.89 1t 1.Rxc5 bxc5 {-230}
24 0.001 -0.03 1t 1.Qc4 {-80}
68 0.001 -0.03 1. 1.Qc4 {-80}
188 0.002 -0.41 2t 1.Qc4 Kd8 {-80}
444 0.003 -0.32 2t+ 1.Qd3 Kd7 {-80}
552 0.004 -0.27 2t 1.Qd3 g6 {-80}
1085 0.006 -0.27 2. 1.Qd3 g6 {-80}
2211 0.009 -0.14 3t 1.Qd3 g6 2.Qc4 {-80}
4778 0.016 -0.14 3. 1.Qd3 g6 2.Qc4 {-80}
17186 0.050 -0.07 4t 1.Qd3 Ne5 2.Qc3 f6 {-80}
28757 0.077 -0.07 4. 1.Qd3 Ne5 2.Qc3 f6 {-80}
74988 0.190 -0.43 5t 1.Qd3 Nd4 2.Nc3 Kd8 3.Nd5 {-80}
204222 0.486 -0.42 5t+ 1.Qf3 Re1+ 2.Rxe1 Nd4 3.Nxb6+ axb6 {160}
257796 0.632 -0.11 5t 1.Qf3 Kd7 2.Qd3 Nd4 3.b3 {-80}
284332 0.691 -0.11 5. 1.Qf3 Kd7 2.Qd3 Nd4 3.b3 {-80}
519797 1.236 -0.06 6t 1.Qf3 Kd7 2.Nc7 Rf6 3.Rd1+ Kc8 4.Nd5 {-80}
1035416 2.421 -0.06 6. 1.Qf3 Kd7 2.Nc7 Rf6 3.Rd1+ Kc8 4.Nd5 {-80}
1735227 4.080 0.00 7t 1.Qf3 Kd7 2.Nc7 Nd4 3.Qd5+ Ke7 4.Qg5+ Kd7
5.Qd5+ {-80}
2919467 6.977 0.00 7. 1.Qf3 Kd7 2.Nc7 Nd4 3.Qd5+ Ke7 4.Qg5+ Kd7
5.Qd5+ {-80}
6410066 15.321 0.02 8t 1.Qf3 Kd7 2.Be3 Bxe3 3.Nxe3 Rf6 4.Qd5+ Kc7
5.Qg5 Rg6H {-80}
10353866 25.047 0.02 8. 1.Qf3 Kd7 2.Be3 Bxe3 3.Nxe3 Rf6 4.Qd5+ Kc7
5.Qg5 Rg6 {-80}
19427278 48.071 0.03 9t 1.Qf3 Kd7 2.Be3 f6 3.Bxc5 bxc5 4.Qc3 Nd4 5.Nf4
Ne2+H 6.Nxe2H Rxe2H {-80}
24605999 1:01.1 0.04 9t+ 1.Qd3 Ne5 2.Bxe5 Rxe5 3.Nf4 Qg4 4.b4 Qf5
5.Qxf5+ Kd8 {911}
29359596 1:13.7 0.39 9t 1.Qd3 Nd4 2.Nxb6+ Kd8 3.Nc4 Ke8 4.Ne5 Bb6
5.Rc8+ Ke7 6.Qc4 {0}
36444480 1:31.3 0.39 9. 1.Qd3 Nd4 2.Nxb6+ Kd8 3.Nc4 Ke8 4.Ne5 Bb6
5.Rc8+ Ke7 6.Qc4 {0}
62822165 2:39.0 0.44 10t 1.Qd3 g5 2.Bxg5 Re5 3.Be3 Rh5 4.Qe4 Qh2+ 5.Kf1
Qh1+ 6.Qxh1H Rxh1+H 7.Ke2H Rxc1H 8.Bxc1H {0}
70767447 2:59.0 0.44 10u. 1.Qd3 g5 2.Bxg5 Re5 3.Be3 Rh5 4.Qe4 Qh2+ 5.Kf1
Qh1+ 6.Qxh1 Rxh1+ 7.Ke2 Rxc1 8.Bxc1 {0}
70767447 Nodes, 30.24% Leavenodes, 395367 Nodes/sec
45443369 eval, 41.01% score, 363918666 genmoves, 7.69% captures le 633/254
ext: pawn 185255, rcp 79034, chk 3765000, repchk 786607, null 27366, prune
2037387
htable: 55522163 store, 0 rejected, 68694061 probe, 28.5% f/p, 35.3% f/s
entries 24999999 age 1 renew 0
egtb probes 0, found 0 max_depth 42
Crafty gets happy about Qf3:
10 26.54 ++ 1. Qf3!!
10 1:38 0.66 1. Qf3 Kd7 2. Be3 f6 3. Bxc5 bxc5 4.
Qc3 Nb4 5. Nf4 Qf5 6. Nxe6 Kxe6
10-> 2:17 0.66 1. Qf3 Kd7 2. Be3 f6 3. Bxc5 bxc5 4.
Qc3 Nb4 5. Nf4 Qf5 6. Nxe6 Kxe6
11 3:44 ++ 1. Qf3!!
time=4:00 cpu=99% mat=-1 n=143219451 fh=93% nps=596k
ext-> chk=11790517 cap=264532 pp=493136 1rep=980867 mate=239749
predicted=0 nodes=143219451 evals=20773855
endgame tablebase-> probes done=0 successful=0
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