Sudoku is a puzzle invented in 1783 by an outstanding mathematician from Basel. After having undergone many changes and mutations, it began to enjoy great interest and popularity in Japan. Several years later he knew the game almost the whole world.

The group of its fans grows every day. The diagrams should be filled in such a way that in each horizontal row, vertical column and square 3x3 there are numbers from 1 to 9. In the case of Sudoku Toon these numbers can be replaced by colours or figures.

Numbers, colours or figures must not repeat or neighbour each other as such. Sudoku does not require complicated bills or calculations from the player, but without thinking, appropriate tactics and logical thinking it is impossible to find the right solution.