PlaySudoku.us
Medium · Puzzle #710
3
8
6
1
5
3
6
9
7
4
8
4
6
3
5
1
2
4
2
9
8
3
2
9
9
3
7
2
5
7
4
8
1
1
7
5
8
Irregular Sudoku (also called Squiggly Sudoku) uses non-rectangular regions instead of 3×3 boxes, requiring different solving strategies.
Irregular Sudoku (also called Squiggly Sudoku) uses non-rectangular regions instead of 3×3 boxes, requiring different solving strategies.
Keep a mental note of which digits are 'almost placed' — appearing 8 times on the board. One more elimination will solve them.
Keep a mental note of which digits are 'almost placed' — appearing 8 times on the board. One more elimination will solve them.