WFF 'N PROOF

WFF 'N PROOF is a game of modern logic, developed to teach principles of symbolic logic. It was developed by Layman Allen a former professor of Yale Law School and the University of Michigan.

WFF 'N PROOF

WFF 'N PROOF is a game of modern logic, developed to teach principles of symbolic logic. It was developed by Layman Allen a former professor of Yale Law School and the University of Michigan.