CREATESPACE Puzzle Book for Adults: Killer Sudoku, Kakuro, Numbricks and Other Math Puzzles for Adults

I liked most of the puzzles but calcudoku puzzles had errors with the mathematical signs.A few of the others required a bit of guesswork to find a solution.I felt it could have been better.

Very disappointed with book found wrong signs in calcudoku and missing black lines in jigsaw sudoko unable to complete puzzlesHow do I get a refund

Given it one star as system won't let me give I zeroWish I'd read the reviews before buying piece of junk. Not proof read properly with many errors making some puzzles impossible.

Happy with it overall but disappointed with the calcudoku section as the wrong mathematical operations have been put in on some of the puzzles (eg a + when it should be x)

The entire first section is filled with mistakes so one cannot complete these puzzles. Terribly annoying. Refund me please!