Notes

• To move a piece on the board, click on the piece then click on the square you want to move it to. If the move is allowed, it will move.
• Castling is done by moving the king, rook moves automatically.
• When swapping sides the computer takes the other side and makes its move instantly.
• This program may be slow on older computers.

P4wn is Javascript chess written by Douglas Bagnall. It is public domain so you can install it on your website. The original website is http://p4wn.sourceforge.net/.