Author: Daniel Shawul
Date: 08:02:14 07/30/04
Go up one level in this thread
On July 29, 2004 at 12:07:55, Scott Gasch wrote: if you do checks in quiescence move ordering is around 85-86%. And i don't think you have a bug. daniel >On July 29, 2004 at 03:37:11, Michael Henderson wrote: > >>I'm getting an 86% average success rate for this stat in mid-game. I'm thinking >>this is too low since most programs have 92-94% and the diff. in % is >>significant. >> >>Here is my move ordering scheme: >>1. hash table move (48MB) >>2. winning captures, even captures >>3. IID move >>4. killer moves (2 slots) >>5. rest of moves based on history, losing captures >> >>eval is nothing but piece-sq tables. Maybe I need special root-move ordering? >>Thx > >Every time your program fails high and it's not the first move, dump a list of >moves generated and tried so far. This gets really noisy so redirect your >output to a text file. Then go through it by hand and see what your engine is >doing. If you have never done this before it should give you all kinds of ideas >about how to improve your move ordering. > >Root move ordering is not the problem if over the whole tree you are at 86%. I >suspect you have some subtile bug in your move scoring. > >Good luck, >Scott
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