How to play
Complete a nine-by-nine number grid. Every row, column and three-by-three box must contain the digits 1 through 9 once each. Starting clues are fixed; enter your answers in the blank cells and check them when you want feedback.
- Select an empty cell and type a digit from 1 to 9. On phones, use the numeric keyboard.
- Check entries highlights incorrect values without filling the solution for you.
- Clear entries keeps the starting clues. New puzzle creates a different grid with exactly one solution.
A useful strategy
Look for a digit missing from a row, then check the columns and boxes of its possible cells. Repeating this simple scan often reveals a useful starting point before more advanced techniques are needed.
What to expect
Puzzles are generated locally and checked for a unique solution. The clue count is not a formal difficulty rating. This first release does not save unfinished boards or print them.
Bring a friend next time
For a shared activity on separate screens, try Friend Match. Create a room, share a link, and guess what your friends would choose. For another solo break, try 2048, Minesweeper, or Sudoku.