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Subject: i think 86% is quiet normal

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.

>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
>>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?
>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,

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