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Hard · Puzzle #265
9
8
8
7
2
1
3
8
9
5
8
3
9
2
1
8
6
9
3
7
4
2
3
2
6
4
7
The world record for solving an easy Sudoku is under 1.4 seconds, set in competitive speed-solving.
The world record for solving an easy Sudoku is under 1.4 seconds, set in competitive speed-solving.
When you find a naked pair, check if those same two cells also form a pair in their shared column.
When you find a naked pair, check if those same two cells also form a pair in their shared column.