Sudoku
Sudoku is logical game with digits. The name come from abbreviation "suji wa dokushin ni kagiru", meaning "the digits must occur only once".

3 | 2 | 4 | ||||||
7 | 8 | 4 | 2 | 5 | 6 | |||
7 | 9 | |||||||
3 | ||||||||
9 | 4 | |||||||
8 | 4 | 5 | 3 | 2 | ||||
6 | 7 | 1 | 4 | |||||
4 | 3 | 2 | 6 | 9 | 7 | |||
1 | 8 | 4 |
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |


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