Fill the 9 x 9 grid so every row, column, and 3 x 3 box contains each number from 1 through 9 exactly once.
- Choose a cell:Click or tap an empty square, then use the number pad or keyboard to enter a digit.
- Use notes:Turn on Notes when you want to mark possible numbers without making a final move.
- Avoid misses:Wrong entries count as mistakes. Too many mistakes lock the puzzle, so start a new one and try again.
- Win condition:Complete every open square with the correct number.
Leaderboard: Classic puzzles record ranked stats by fastest solve time. Quick and Expert are practice modes and do not write leaderboard stats.
