Chessie
Our chess computer, "Chessie", calculates up to two and a half million possible positions for every move it makes and looks up situations in 250,000 historic grand-master games and opening books to come up with the best move to counter your move.

Not up to this power? Just tell Chessie to play at a lower level.
But Chessie is unforgivingly and on all levels will immediately take advantage of any errors!