This Frame Sudoku is a creative Sudoku variation that blends classic Sudoku logic with outside sum clues. Besides completing every row, column, and 3×3 box with the digits 1 to 9, the numbers outside the grid indicate the sum of the first three cells in the corresponding direction. These clues add another layer of logical reasoning while keeping the puzzle easy to understand and enjoyable to solve.
Frame Sudoku later became widely known as Outside Sums Sudoku after appearing in the World Sudoku Championship. If you enjoy handcrafted Sudoku variants that combine simple arithmetic with elegant logical deduction, this puzzle is sure to keep you engaged until the final cell.
Rules of Frame Sudoku
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| Frame Sudoku (Daily Sudoku League #129) |
Previous Daily Sudoku League Puzzle: Average Sudoku (Daily Sudoku League #128)
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