Hitori & Sudoku

Puzzle fans will love hitori. Instead of filling in numbers on a grid, they have to black them out—like playing sudoku backwards! Hitori is a new brainchild of Nikoli, publisher of Japan’s very first puzzle magazine and a superpower in the puzzle world. The rules are simple: 1) No number may appear more than once in any row or column. 2) Starting with a fully filled grid, the solver has to decide which duplicate numbers to knock out. And 3) all numbers remaining at the end have to be connected t…