Author: Stuart Cracraft
Date: 21:51:04 09/29/04
Go up one level in this thread
On September 30, 2004 at 00:26:21, Michael Henderson wrote: >On September 29, 2004 at 23:52:15, Stuart Cracraft wrote: > >>[D] 4r1k1/p1qr1p2/2pb1Bp1/1p5p/3P1n1R/1B3P2/PP3PK1/2Q4R w - - bm Qxf4; >> >>In this position I had everything turned on and got the solution >>in a little more than 1 1/2 minutes: >> >> 1/11 g2f1 0.01 -953 945 g2f1 f4d5 >> g2f1 f4d5 >> 2/12 g2f1 0.01 -953 1644 >> g2f1 f4d5 c1g5 >> 3/12 g2f1 0.02 -953 5064 >> g2f1 f4d5 c1g5 d5f6 >> 4/20 g2f1 0.09 -953 20655 >> g2f1 f4d5 b3d5 c6d5 c1c7 d6c7 f1g1 >> 5/22 g2f1 0.65 -953 168943 >> g2f1 b5b4 b3a4 f4d5 f6g5 d5e7 >> 6/26 g2f1 2.59 -953 620310 >> g2f1 b5b4 mtmt >> 7/32> g2f1 60.58 -552 14192153 g2f1 e8c8 c1b1 f4d5 b1e4 d6b4 f6e5 c7b6 >> g2f1 e8c8 c1b1 f4d5 b1e4 d6b4 >> 7/34 c1f4 99.42 5113 24537823 c1f4 e8e6 f4g5 d7e7 b3e6 e7e6 h1d1 d6e7 f6e7 >> c1f4 e8e6 f4g5 d7e7 b3e6 e7e6 h1d1 >> >> >>I turned off null move (R=2) and got the solution in about 11 seconds: >> >>Alpha=-1332 Beta=-531 Maxdepth=9999999 MaxTime=99999999 >> 1/11 g2f1 0.01 -953 908 g2f1 f4d5 >> g2f1 f4d5 >> 2/12 g2f1 0.01 -953 1565 >> g2f1 f4d5 c1g5 >> 3/14 g2f1 0.07 -953 20084 >> g2f1 f4d5 c1g5 d5f6 >> 4/22 g2f1 0.60 -953 131543 >> g2f1 f4d5 b3d5 c6d5 c1c7 d6c7 f1g1 >> 5/26>g2f1 6.80 -552 1607444 >> g2f1 b5b4 b3a4 f4d5 f6g5 d5e7 >> 5/36 c1f4 10.70 2260 2466497 c1f4 d6f4 h4h5 g6h5 h1h5 f4h6 h5h6 c7g3 g2g3 d7d6 >> >> c1f4 d6f4 h4h5 g6h5 h1h5 f4h6 h5h6 c7g3 g2g3 d7d >> >>So now my question is, would it make sense to consider an idea of >>disabling null move under additional circumstances if those >>circumstances can be identified. >> >> endgame >> side to move in check >> inside principal variation > >what's the one about disabling it in the PV? > I don't know where I fist saw that. Try it and see if any improvement.
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