Daily Sudoku

How to play

• Fill the grid so every row, column and 3×3 box contains the digits 1 to 9 exactly once.
• Tap a square, then tap a number. Turn on Notes to pencil in candidates instead.
• Keyboard: arrow keys move, 1–9 enter a digit, Shift + digit adds a note, N toggles notes, Backspace erases and Ctrl+Z undoes.
• Hint fills in one correct square and is counted in your result.

About the difficulty levels

Every puzzle has exactly one solution and is rated by the techniques a person needs to solve it, not by how many numbers are given. Easy needs only singles; Medium adds pairs and pointing; Hard adds triples and the X-Wing; Expert needs advanced patterns such as the Swordfish or XY-Wing. No puzzle needs guesswork. New puzzles arrive at midnight UK time.