Frame Sudoku
In frame sudoku, numbers surround all four sides of the grid; each one shows the sum of the three cells of that row or column nearest that edge.
Generating puzzle…
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Time: 0:00 · Mistakes: 0
Frame Sudoku rules
- 1Rule 1
The classic row, column, and 3x3 box rules apply as usual.
- 2Rule 2
The number on the left/right edge is the sum of the leftmost/rightmost three cells of that row.
- 3Rule 3
The number on the top/bottom edge is the sum of the topmost/bottommost three cells of that column.
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