abstract:Bughouse chess (also known as Exchange chess, Siamese chess, Tandem chess, Transfer chess, Double bughouse, Cross chess, or simply bughouse or bug) is a popular chess variant played on two chessboards by four players in teams of two.Other less common names for bughouse include Team chess, Hungarian chess, Swedish chess, New England Double bughouse, Pass-On chess, Tandem Put-back, Double Speed, Double chess, Double Five, Simultaneous chess, Double bug or Double bughouse (von Zimmerman (2006), front; Manson and Hoover (1992), p.