Sudoku

Race a friendSame puzzle, same time. Lowest time wins.

New puzzle

Every puzzle has exactly one answer and can be solved by logic alone, with no guessing.

How to play

  • Fill every empty square with a number from 1 to 9.
  • Each row, each column, and each 3×3 box must contain 1 to 9 exactly once.
  • Tap a square, then tap a number. Turn on Notes to pencil in possibilities.
  • Stuck? A hint fills in one correct square (3 per puzzle).
  • Wrong numbers are marked ✕ (you can switch this off in Settings).