Difficult Logic Puzzles: Sudoku 10x10 Puzzles

(also known as "Number Place") is a placement puzzle. The puzzle is most frequently a 9 x 9 grid made up of 3 x 3 subgrids (called "regions"). Some cells already contain numbers, known as "givens". The goal is to fill in the empty cells, one number in each, so that each column, row, and region contains the numbers 1 through 9 exactly once. Each number in the solution therefore occurs only once in each of three "directions", hence the "single numbers" implied by the puzzle's name. ============KEYWORDS/TAGS: logic games - logic game puzzle - logic puzzles - logic puzzle books for adults - logic puzzle books for teens - logic puzzle for adults - logic puzzles riddles - brainteasers for adults - brainteaser puzzles for adults - brainteaser books for adults - brainteaser adults - brainteaser for adults - brainteaser games for adults - brainteaser jigsaw puzzles - logic puzzle large print