“Summandum 9×9” Puzzle Rules:
Summandum is a logic puzzle based on addition.
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A square grid is given, with some cells containing numbers.
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Place the numbers from 0 to N above each column and to the left of each row, using each number exactly once on each side.
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A number inside a cell equals the sum of the number at the start of its row and the number at the top of its column.
Goal
Place all outside numbers so that all cell sums are correct.
Solution of this Summandum 9×9 can be viewed by clicking on button. Please do give your best try to solve this Sudoku puzzle before looking at the answer.
Link to solve it online: Penpa+
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