Paste an old FEN position, or input one; or let it empty for to start a new game from the initial standard position.

FEN:

Set position to FEN (new game if FEN is empty)

doChess is a Chess Engine, partially modeling the basic technics: iterative deepening, alpha beta search, principle variation, quiescence search, transposition table. Being completely written in javaScript, doChess is possibly slow (depending of the used browser) and don't permit tasks like creating files.

Here maximum depth is only 6 (three moves + some forced extensions) and is not used an opening book.

©Vlad Bazon, 2008
some chess CSS structures from http://chess.dynarch.com