36 more
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The Little Book of Big Brain Games -
Mindgames -
More BrainMatics Logic Puzzles -
Mind benders -
The Hinged Square Other Puzzles -
The Puzzle Universe: The History of Math in 315 Puzzles -
Ivan Moscovich's Super-games
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Leonardo's Mirror Other Puzzles -
The Think Tank -
The Shoelace Problem Other Puzzles -
1,000 Playthinks: Puzzles, Paradoxes, Illusions & Games -
The Monty Hall Problem Other Puzzles -
Perplexing Pattern Problems & Other Puzzles (Mastermind Collection) -
Sensational Shape Problems & Other Puzzles (Mastermind Collection) -
Probability games -
Brainmatics: Logic Puzzles -
Brain-Flexing Balance Problems & Other Puzzles (Mastermind Collection) -
Cunning Combination Problems & Other Puzzles (Mastermind Collection) -
Probability Games and Other Activities -
Loopy Logic Problems and Other Puzzles -
Fiendishly difficult math puzzles -
Fiendishly difficult visual perception puzzles -
Puzzlegrams too! -
Magic Cylinder Book -
Mind's eye geometry -
Puzzling Reflections -
The Awesome 3-D Puzzle Challenge -
Deviously Difficult Mind-Bending Puzzles -
Fiendishly frustrating brain-twisting puzzles -
Peerless Probability Problems & Other Puzzles (Mastermind Collection)