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