What does the row/column sum check?

A valid row or column in sudoku contains 1–9 exactly once; their sum is always 45.

What if I have blanks?

Enter 0 for empty cells, or leave blanks and only sum the digits you have to compare with 45.

No. This is a small helper for sums and basic validation, not a full solver.

Simple sudoku helper: check one row or column sum (1–9 = 45) or validate a set of nine digits.

Nine digits (row or column, e.g. 1 2 3 4 5 6 7 8 9)

Sum0

What does the row/column sum check?: A valid row or column in sudoku contains 1–9 exactly once; their sum is always 45.
What if I have blanks?: Enter 0 for empty cells, or leave blanks and only sum the digits you have to compare with 45.
Does it solve the puzzle?: No. This is a small helper for sums and basic validation, not a full solver.

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