Author: Dann Corbit
Date: 17:04:25 09/15/04
Go up one level in this thread
On September 15, 2004 at 19:48:37, Will Singleton wrote: >On September 15, 2004 at 19:25:41, Dann Corbit wrote: > >>They are not exactly news anymore. Anyway -- the score for Qf1+ always seemed >>so convincing before that I considered the alternate Qd1+ to be so inferior that >>it was not worthy of a bust. But a devastating advantage of 17 pawns pretty >>well signals a win, I think. >> >>[D]6k1/p5p1/5p2/2P2Q2/3pN2p/3PbK1P/7P/6q1 b - - bm Qf1+; id "WAC.111"; >> >>E:\programme\winboard\Arasan>testsrc -v -t 999 -H 350000 111.epd >>"WAC.111" >>ply 1. Qxh2 0 seconds. score: +1.36 2 nodes. >>ply 1. Qxh2 0 seconds. score: +1.77 32 nodes. >>ply 2. Qf1+ 0 seconds. score: +1.91 87 nodes. >>ply 2. Qd1+ 0 seconds. score: +2.27 98 nodes. >>ply 2. Qd1+ 0 seconds. score: +2.27 217 nodes. >>ply 2. Qd1+ 0 seconds. score: +1.94 403 nodes. >>ply 3. Qd1+ 0 seconds. score: +1.94 1004 nodes. >>ply 4. Qd1+ 1 seconds. score: +1.77 5070 nodes. >>ply 5. Qd1+ 1 seconds. score: +1.84 15095 nodes. >>ply 6. Qd1+ 1 seconds. score: +2.34 25565 nodes. >>ply 6. Qd1+ 1 seconds. score: +6.44 28698 nodes. >>ply 7. Qd1+ 1 seconds. score: +6.94 29046 nodes. >>ply 7. Qd1+ 1 seconds. score: +7.56 33095 nodes. >>ply 8. Qd1+ 1 seconds. score: +7.81 50121 nodes. >>ply 9. Qd1+ 1 seconds. score: +8.31 51348 nodes. >>ply 9. Qd1+ 1 seconds. score: +8.45 86277 nodes. >>ply 10. Qd1+ 1 seconds. score: +8.80 203409 nodes. >>ply 11. Qd1+ 1 seconds. score: +9.30 210955 nodes. >>ply 11. Qd1+ 2 seconds. score: +9.42 486838 nodes. >>ply 12. Qd1+ 3 seconds. score: +9.80 1118739 nodes. >>ply 13. Qd1+ 5 seconds. score: +10.11 2975827 nodes. >>ply 14. Qd1+ 5 seconds. score: +10.61 3092568 nodes. >>ply 14. Qd1+ 14 seconds. score: +11.03 9842234 nodes. >>ply 15. Qd1+ 31 seconds. score: +11.23 24902293 nodes. >>ply 16. Qd1+ 78 seconds. score: +11.61 68710668 nodes. >>ply 17. Qd1+ 81 seconds. score: +12.11 71174244 nodes. >>ply 17. Qd1+ 217 seconds. score: +12.44 191891996 nodes. >>ply 18. Qd1+ 222 seconds. score: +12.94 195880805 nodes. >>ply 18. Qd1+ 662 seconds. score: +16.86 559877434 nodes. >>ply 19. Qd1+ 999 seconds. score: +16.86 854738444 nodes. >>855577 nodes/second. >>572442064 regular nodes, 282296380 quiescence nodes. >>570363667 searches of hash table, 303209570 successful (53 percent). >>10937500 hash entries inserted, 57243447 entries replaced, 296346264 inserts >>failed. >>move ordering: 1st 98.142% 2nd 1.22517% 3rd 0.263888% 4th 0.0570437% >>null cutoffs: 6986245 (0%) >>pruning: 1569422013 moves (futility), 79172316 nodes (razored) >>extensions: 444457580 check, 994594 recapture, 0 capture, >> 14120701 pawn, 205350 threat, 10399675 forced move. >>0 tablebase probes, 0 tablebase hits >>result: Qd1+ 999 seconds. score:+16.86 854738444 nodes. ** error >>Qd1+ Kg2 Qg1+ Kf3 Qf1+ Kg4 Qe2+ Kxh4 g5+ Kg3 Bf4+ Qxf4 gxf4+ Kxf4 Qf1+ Kg4 f5+ >>Kg5 fxe4 dxe4 d3 h4 d2 h5 d1=Q h6 Qc1+ Kh5 Kh7 e5 > >I don't think so. All Qd1 does is force the king to move twice before Qf1 is >played. It's not a transposition.
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