Acol

Acol is the bridge bidding system that, according to The Official Encyclopedia of Bridge,[1] is "standard in British tournament play and widely used in other parts of the world". It is a natural system using four-card majors and, most commonly, a weak no trump.

  1. ^ Manley, Brent; Horton, Mark; Greenberg-Yarbro, Tracey; Rigal, Barry, eds. (2011). The Official Encyclopedia of Bridge (7th ed.). Horn Lake, MS: American Contract Bridge League. p. 343. ISBN 978-0-939460-99-1.