Author: TEERAPONG TOVIRAT
Date: 09:18:34 06/13/00
Hi,
I have 3 questions.
1. Does two level transpositional table have significant
advantages over one level table ? If so,how much we
gain in % ?
2.In board representation,besides bitboard ,which is faster
between board 12x10(or 12x12) and board 0x88 ?
To generate the move,after obtaining piece and location,
the former takes one array look up and one arithmetic
operation to get a valid square.On the other hand,the
latter takes 2 times table look up(map and unmap)
and one arithmetic and one bitwise operation(&0x88) .
I think the former is better. Am I right ?
Of course,board 0x88 can make use of (sq>>3) (sq&7) in
evaluation(). Overall result which one is better ?
3.In C language...
{
int a[2];
int x,y;
...
if(x&8) a[1]=y;else a[0]=y; // this line
...
}
Is it legal if I change into...
a[x&8]=y;
I didn't get any error message from it .
Can it be a potential bug?
Thanks,
Teerapong
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