How to play
A fresh Sudoku every run, built so it has exactly one solution. Fill each row, column and 3 by 3 box with 1 to 9. Correct numbers score points, a wrong number costs 15 seconds, and finishing early adds a time bonus. Notes mode lets you pencil in candidates.
Tap a cell, then tap a number. Keyboard: digits 1 to 9, arrow keys to move, Backspace to erase, N for notes, P or Esc to pause.
Guide
Controls
Cells and numbersTap a cell, then tap a number.
NotesSwitch on Notes to pencil in candidates.
Scoring
Right numberScores points.
Wrong numberCosts 15 seconds.
FinishingSolve the grid before the clock ends for a time bonus.