This is the Chinese Chess engine which won the Gold in both the 2nd and 3rd Computer Olympiad! China's 1000-year equivalent to Western Chess is played with rather different rules, but with some common pieces. Varients of this are played now in China and Korea. A key difference is the limitation of the scope of some pieces, which are confined to regions of the board. Chinese Chess also uses an unusual definition of the "check" rule, which requires a blocking piece to complete the check.