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Solutions to Martin Gardner's best mathematical puzzles | Mathematics | The Guardian
Perplexing Puzzles & Tantalizing Teasers - Art of Play
Hexaflexagons, Probability Paradoxes, and the Tower of Hanoi: Martin Gardner's First Book of Mathematical Puzzles and Games (The New Martin Gardner Mathematical Library, Series Number 1) - Gardner, Martin: 9780521735254 - AbeBooks
More mathematical puzzles and diversions by Martin Gardner | Goodreads
Mathematical Puzzles of Sam Loyd, Martin Gardner – LIBRERIA DEL INGENIERO
Mathematical Puzzles of Sam Lloyd, Vol. 2 - Quicker than the Eye