At your home, on the commuter train, or in your doctor's officewhenever you have a minute or two, challenge your brain with these ingenious brainteasers!Nathan...
The variety of math, logic, and word puzzles range from reasonably straightforward to fiendishly difficult in this comprehensive collection. Fully endorsed by the International High...
Nathan Haselbauer, President of the International High IQ Society, has painstakingly researched and designed this impressively varied collection of over 500 mindbending puzzles to enable...
Sale price$9.56Regular price$14.34
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At your home, on the commuter train, or in your doctor's officewhenever you have a minute or two, challenge your brain with these ingenious brainteasers!Nathan...
The variety of math, logic, and word puzzles range from reasonably straightforward to fiendishly difficult in this comprehensive collection. Fully endorsed by the International High...
Nathan Haselbauer, President of the International High IQ Society, has painstakingly researched and designed this impressively varied collection of over 500 mindbending puzzles to enable...
Sale price$9.56Regular price$14.34
Quantity
Add to cart
Recently viewed products
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