Fiendishly Frustrating Brain-Twisting Puzzles
 
Fiendishly Frustrating Brain-Twisting Puzzles
by Ivan Moscovich
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Ivan Moscovich's Mastermind Collection: The Shoelace Problem & Other Puzzles
 
Ivan Moscovich's Mastermind Collection: The Shoelace Problem & Other Puzzles
by Ivan Moscovich
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Deviously Difficult: Mind-bending Puzzles
 
Deviously Difficult: Mind-bending Puzzles
by Ivan Moscovich
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Ivan Moscovich's Mastermind Collection: The Monty Hall Problem & Other Puzzles
 
Ivan Moscovich's Mastermind Collection: The Monty Hall Problem & Other Puzzles
by Ivan Moscovich
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The Awesome 3-D Puzzle Challenge
 
The Awesome 3-D Puzzle Challenge
by Ivan Moscovich
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$2 to $15
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Perplexing Pattern Problems & Other Puzzles
 
Perplexing Pattern Problems & Other Puzzles
by Ivan Moscovich
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Loopy Logic Problems & Other Puzzles
 
Loopy Logic Problems & Other Puzzles
by Ivan Moscovich
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The Big Book of Brain Games: 1000 Play Thinks of Art, Mathematics & Science
 
The Big Book of Brain Games: 1000 Play Thinks of Art, Mathematics & Science
by Ivan Moscovich
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$7 to $18
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Knotty Number Problems & Other Puzzles
 
Knotty Number Problems & Other Puzzles
by Ivan Moscovich
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Peerless Probability Problems & Other Puzzles
 
Peerless Probability Problems & Other Puzzles
by Ivan Moscovich
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Ivan Moscovich's Mastermind Collection: Leonardo's Mirror & Other Puzzles
 
Ivan Moscovich's Mastermind Collection: Leonardo's Mirror & Other Puzzles
by Ivan Moscovich
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Tough Topology Problems & Other Puzzles
 
Tough Topology Problems & Other Puzzles
by Ivan Moscovich
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Brain-flexing Balance Problems & Other Puzzles
 
Brain-flexing Balance Problems & Other Puzzles
by Ivan Moscovich
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Network Games
 
Network Games
by David Brion, Ivan Moscovich
5/5 stars (1 user rating)
$2 to $7
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Sensational Shape Problems & Other Puzzles
 
Sensational Shape Problems & Other Puzzles
by Ivan Moscovich
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