Thanks!

it is just a simple GUI: a table with pieces and some php and javascript to handle moves and validation, using a few arrays, everything stored in mysql database. it's just a local online chess game website. The script is quit in-efficient coded and not bugfree.

In present script all moves are stored in a database, retrieved from ther and put in an array $aHistory. if in chess, it is added to the move.
I did not know about the zobrist keys, so just read it, and i have to read it several times more to understand the principles of it.
We do not use a kind of ...

I do not know how other people think about it, but i just can't find all the pieces about chess programming all together at one place. Google ain't my friend, because most of the time i do do know what i am looking for.....

So a wiki for pseudo-coding en howto's seems to me a perfect add-on for ...

Ok, what i have in mind now:
Per game:
saving the 14 bitboards (12 for pieces and 2 for all white en al blackpieces, easier for evaluation of valid moves) in my database.
retrieve the bitboards, loop trough the bitboards, create and display the board.
If moved, check move via bitboard mechanism ...

Hi all,
I wanted to rewrite an existing online chessgame (in PHP) because of limitations in the current script.
After readng a lot, it's time to start coding.
First part is the boardpresentation.
Starting with 14 bitboards for all kind of pieces, including 2 for all white and all black pieces), how ...