Sudoku Hitori - 200 Logic Puzzles 13x13 (Volume 7)

Hitori (from Japanese "Hitori ni shite kure"; literally "let me alone") is played on a grid of squares. At the beginning, each cell contains a number. The goal is to paint out some cells so that there are no duplicate numbers in any row or column, similar to the solved state of a Sudoku puzzle (except with black squares added to the grid). Orthogonal connections are important as well; paintedout (black) cells cannot be connected orthogonally, and the other cells must be connected orthogonal...