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About game
Sudoku is a famous number puzzle. The object of Sudoku is to fill the other empty cells with numbers between 1 and 9 (1 number only in each cell) according the following rules:
How to play
1) Number can appear only once on each row
2) Number can appear only once on each column
3) Number can appear only once on each region
Our game has a unique version - 4 by 4.