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Tap a cell, then a number · arrow keys move · 1-9 types · N toggles pencil marks

Rules & about this puzzle
  • Each row contains 1-9 exactly once.
  • Each column contains 1-9 exactly once.
  • Each 3x3 box contains 1-9 exactly once.

Place the digits 1 through 9 so that no digit repeats in any row, column, or 3x3 box. Every puzzle is generated fresh with exactly one solution.