Author: Anthony Cozzie
Date: 10:27:45 10/15/04
Go up one level in this thread
On October 15, 2004 at 03:18:31, Rick Bischoff wrote: >Hello, > >I am in the process of running wac at 5 minutes to make sure everything is going >well. > >[D]1k5r/pppbn1pp/4q1r1/1P3p2/2NPp3/1QP5/P4PPP/R1B1R1K1 w - - 0 1 > > 1 -388 0 3 1. Rxe4 fxe4 > 1 -278 0 6 1. Qc2 Qxc4 > 1 36 0 7 1. Bf4 > 2 20 0 87 1. Bf4 Kc8 > 2 22 0 238 1. Ne5 Rf6 > 3 34 0 637 1. Ne5 Rf6 2. Bf4 > 4 32 2 4002 1. Ne5 Rf6 2. Bg5 Rff8 > 5 157 14 22842 1. Ne5 Qxb3 2. Nxd7+ Kc8 3. axb3 Kxd7 4. Rxa7 > 6 157 59 106794 1. Ne5 Qxb3 2. Nxd7+ Kc8 3. axb3 Kxd7 4. Rxa7 > 7 153 239 407638 1. Ne5 Qxb3 2. Nxd7+ Kc8 3. axb3 Kxd7 4. Rxa7 Nd5 > 8 153 1059 1955992 1. Ne5 Qxb3 2. Nxd7+ Kc8 3. axb3 Kxd7 4. Rxa7 Rb6 >5. c4 > 9 143 4668 8221011 1. Ne5 Qxb3 2. axb3 Bxb5 3. Nxg6 Nxg6 4. Ra5 c6 5. >Bb2 > 9 152 13537 24646838 1. b6 axb6 2. Ne5 Kc8 3. Nxg6 hxg6 4. Qxe6 Bxe6 5. >Bf4 >move b6 > >I do not understand why it switched to this b6 line. Here is the position after >the PV completed: >[D]2k4r/1pp1n1p1/1p2b1p1/5p2/3PpB2/2P5/P4PPP/R3R1K1 b - - 0 5 > >Now, I do have code the gives a pretty big bonus for open (and half open) files >around the king, but this line opens them up on both sides, thereby negating >that effect. Is there some "deeper" chess meaning to this line? Or more >likely, is my engine wacked? i.e., why did it take almost 16,000,000 nodes on >ply 9?? My move ordering surely can't be that bad! This is giving me a >headache. Don't worry about nodes / depth _too_ much. Engines vary a _lot_ based on the amount of extensions and pruning that they do. For example, Shredder will get depth 11 in 2 seconds while Chessmaster will need 2 minutes. If I enable SE on Zappa, I increase the node count dramatically (factor of 2 or more per ply). anthony
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