The Key to Solitaire Author:Douglas Brown "The Key to Solitaire. by Douglas Brown. — "Included in this compact, infomative volume are the most popular solitaire games. These are augmented with simple games and variations, in addition to complex sophisticated games. All in all, there are 150 ways to play solitaire. . . . Whether to unwind and relax, to develop playing skill, or simply ... more »to entertain, The Key to Solitaire readily qualifies."« less