The Mystery of Chess Boxing (Chinese: 雙馬連環; pinyin: Shuāng mǎlián huán; also known as Ninja Checkmate)[1] is a 1979 Hong Kong kung fu film written, produced and directed by Joseph Kuo and starring Mark Long, Jack Long and Lee Yi Min.

Ah Pao, who wants to learn kung fu so that he can avenge his father's death at the hands of the Ghost Faced Killer.

However, the school's cook helps the boy and teaches him some moves after challenging Ah Pao to steal one grain of rice from the Chef's bowl.

Still wishing to learn kung fu, he turns to an old xiangqi (Chinese chess) master Chi Sue Tin, recommended by the cook, for training.

[2] Additionally, Wu-Tang Clan member Ghostface Killah derived his stage name from the film's villain, the Ghost-Faced Killer.