Simple game consisting of a grid of 9X9 squares, divided into regions of 3X3 squares.

Starting from some numbers already arranged in some of the squares, you must complete the empty squares with digits from 1 to 9 without repeating them by row, column or region.

The game has 4 difficulty levels.

You can choose to play with numbers (1-9) or letters (A-I).

You can choose the color of the game, light or dark.