From krazydad, constructor of the wildly popular and addictive puzzles published in The New York Times as Two Not Touch, here are 360 of your favorite Star Batt

Killer Sudoku Puzzle Volume 4 EBook contains total of 228 puzzles organized at 5 different difficulty levels (1-5) with all of their solutions. The instruction

Just when you thought it was safe to pick up a pencil Killer Su Doku is based on the original Su Doku grid, with the same rules and numbers—1 to 9—but with

Are You Searching For Sumdoku Puzzle Book? Then You Will Love This Book! Inside You Will Find Total 300 Sum-Doku Puzzles With Easy Medium And Hard Difficulty.Pu

Killer Sudoku is a very popular variant of classic Sudoku that adds some new challenges. These puzzles have more going on and can be extremely satisfying to sol