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Rating: 
Summary: excellent choice
Review: this book is interesting and challenging, even to people who have studied math at the college level. the problems are short, and take about an hour to solve, at least they did for me. it was a great read and i highly recommend this as a gift for the math lover in your life.
Rating:
Summary: A puzzler's delight!
Review: Wow, what a splendid collection of varied and challenging puzzles - a puzzler's delight!I especially liked the "handicap" puzzles - these are new to me, and involve algorithmic puzzles with bizarre handicaps having to do with memory. The book also has extensive refrences so you can further your interests for a particular type of puzzle. There's even an unsolved puzzles section to challenge even the professional mathematician. In terms of difficulty level, I would say that 2/3rds of the puzzles are meant for the seasoned puzzler and do require some "mathematical maturity" . But there are quite a few "insight" puzzles that required almost no math. There's even geography puzzles of all things - that's quite refreshing and original for a math puzzle book. congrats Dr. Winkler on a splendid collection!
Rating:
Summary: excellent choice
Review: Wow, what a splendid collection of varied and challenging puzzles - a puzzler's delight! I especially liked the "handicap" puzzles - these are new to me, and involve algorithmic puzzles with bizarre handicaps having to do with memory. The book also has extensive refrences so you can further your interests for a particular type of puzzle. There's even an unsolved puzzles section to challenge even the professional mathematician. In terms of difficulty level, I would say that 2/3rds of the puzzles are meant for the seasoned puzzler and do require some "mathematical maturity" . But there are quite a few "insight" puzzles that required almost no math. There's even geography puzzles of all things - that's quite refreshing and original for a math puzzle book. congrats Dr. Winkler on a splendid collection!
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