Difficulty and solvability is totally random as I randomly left a certain number of hints from a full-filled board.
In this demo, backtracking algorithm is used for generating the sudoku. Difficulty and solvability is totally random as I randomly left a certain number of hints from a full-filled board.
1 | 2 | 3 | ||||||
9 | 5 | 8 | 1 | |||||
8 | 3 | 7 | 9 | 2 | 5 | |||
7 | 9 | 8 | 6 | 4 | 3 | |||
6 | 5 | 4 | 7 | |||||
7 | 6 | 8 | ||||||
9 | 6 | 7 | ||||||
3 | 1 | 8 | ||||||
1 | 6 |
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