Author: Will Singleton
Date: 16:48:37 09/15/04
Go up one level in this thread
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.
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