Sudoku Kuruma

Game manual Sudoku Kuruma

This Sudoku is made by Martin Kool from Q42 A sudoku (Japanese 数 独, Sūdoku, short for 数字 は 独身 に 限 る, Sūji wa dokushin ni kagiru, translated 'isolate the numbers') is a puzzle consisting of nine by nine squares that are grouped as nine blocks of three by three squares.

The numbers 1 to 9 must be entered in the boxes in such a way that the numbers 1 to 9 appear once in each horizontal line and in each vertical column and in each of the nine blocks. The numbers have already been entered in a number of boxes. A sudoku is therefore a special case of a Latin square.