Search found 33 matches
- Thu Nov 06, 2008 12:58 pm
- Forum: Endgame Tablebases
- Topic: Index function
- Replies: 10
- Views: 9875
Re: Index function
I think I can work it out now, thanks!
- Tue Oct 28, 2008 11:54 am
- Forum: Endgame Tablebases
- Topic: Index function
- Replies: 10
- Views: 9875
Re: Index function
Well, the index function in the delphi example just gives totally wrong indices. And I was wrong with my KQQK-K example. I forgot I already had a fixed array for all legal king-combinations in a no-pawn situation. 1. WK+BK = 0...563 (all legal king combinations) 2. Q1 = 0...63 3. Q2 = Q1 + 1...63 4....
- Tue Oct 28, 2008 9:41 am
- Forum: Endgame Tablebases
- Topic: Index function
- Replies: 10
- Views: 9875
Index function
Returning to my tablebases after a while... I am working out my last size optimization and I don't get the index function. Let's take an example: KQQR-K The array should be built (as far as I understand) this way: 1. K = 0...9 (the unique triangle) 2. Q1 = 0...63 3. Q2 = Q1 + 1...63 4. R = 0...63 5....
- Sat Sep 13, 2008 7:03 am
- Forum: Endgame Tablebases
- Topic: Explanation of the unique triangle
- Replies: 29
- Views: 28617
Re: Explanation of the unique triangle
A lot of stuff to study I see. Thanks for all reactions. Next subject. What is your compression method? Your point 2) suggests that you try to pack position values in e.g. 5 bits if there are at most 32 different values. Is that your compression? Or do you first pack positions in as few bits as poss...
- Tue Sep 09, 2008 10:35 am
- Forum: Endgame Tablebases
- Topic: Explanation of the unique triangle
- Replies: 29
- Views: 28617
Re: Explanation of the unique triangle
Hmm I'll have to study on that Mr. Muller :) My unique triangle is working. Now I need some more compression. The methods I use are: 1) Unique triangle, Precalculated legal king-combinations (where the distance between them is larger then 1) 2) Determine the number of bits, needed for a position: If...
- Mon Sep 08, 2008 8:25 pm
- Forum: Endgame Tablebases
- Topic: Explanation of the unique triangle
- Replies: 29
- Views: 28617
Re: Explanation of the unique triangle
Yesssss! I get it!
Thanks very much!
Thanks very much!
- Wed Sep 03, 2008 4:16 pm
- Forum: Endgame Tablebases
- Topic: Explanation of the unique triangle
- Replies: 29
- Views: 28617
Re: Explanation of the unique triangle
I'll read your post a few times and react when I get it, or not
Thanks.
Thanks.
- Wed Sep 03, 2008 5:36 am
- Forum: Endgame Tablebases
- Topic: Explanation of the unique triangle
- Replies: 29
- Views: 28617
Explanation of the unique triangle
I started to create my own tablebases a few weeks ago with my own software. Now I would like to know how the unique triangle a1-d1-d4 works. Currently I use my "unique block" a1-d1-d4-a4, which I can understand :) I can't understand the symmetry of the triangle. Is there someone who can ex...