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Subject: Re: late move reductions (and another question)

Author: Robert Hyatt

Date: 17:00:40 03/01/06

Go up one level in this thread

Someone had already emailed me this.  I just hadn't looked.  Now I am not quite
sure what is going on:

static const int HistorySize = 12 * 64;

That appears to be a dimension for the HistHit[] and HistTot[] arrays, which
leaves me lost since the other code sent to me has:

index = PIECE_TO_12(board->square[MOVE_FROM(move)]) * 64 +
SQUARE_TO_64(MOVE_TO(move));

followed by

   HistHit[index]++;
   HistTot[index]++;

So I know I am overlooking something.  "index" is clearly a 12 bit value between
0 and 4095 if I understand it correctly.  yet HistHit[] is not nearly that big.

Now I'll certainly download the source to get the context for the above to see
what is up.  Certainly looks off-the-wall at first glance since it can't work
correctly if I am reading that right...

• Re: late move reductions (and another question) Jarkko Pesonen 23:32:22 03/01/06
• Re: late move reductions (and another question) Tony Werten 23:19:04 03/01/06
  • Re: late move reductions (and another question) Robert Hyatt 08:50:56 03/02/06
    • Re: late move reductions (and another question) Paul Clarke 11:14:15 03/02/06
      • Re: late move reductions (and another question) Robert Hyatt 11:52:47 03/02/06
        • Re: late move reductions (and another question) Uri Blass 18:23:13 03/02/06

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