Maybe your son sees it as part of the game, so think of him as being playful rather than sneaky.
If you catch him cheating again, acknowledge his desire to win but point out the need to follow rules. Review the rules with him and have a handshake agreement to abide by the rules all the time. Be a good example of fair play and sportsmanship.
SOURCES: Rachel Arguelles, head teacher at the Greenhills Learning Center in San Juan; Abelardo Apollo I. David, Jr., occupational therapist and executive director of the Independent Living and Learning Center; Ropheme Meniola, M.A. in counseling and minor in family and child psychology, Ateneo de Manila; Romela Rubio, psychologist; SMART PARENTING ( July, August, September, and October 2003; June , July, August, October, November 2004;April 2005)