Sudoku Grove
Free Sudoku Online
Pick a level and play. Every puzzle has exactly one solution and is made fresh in your browser. No sign-up, no app.
How to play sudoku
Fill the grid so that every row, every column and every 3×3 box holds the digits 1 to 9 once each. Some digits are given at the start; you work out the rest by logic. You never need to guess: each puzzle here has a single solution that can be reached step by step.
Tap a square, then tap a number. Turn on Notes to pencil in candidates. On a keyboard, type 1–9, use the arrow keys to move, Backspace to erase, N for notes and Ctrl+Z to undo. Your game saves itself on this device, so you can close the tab and come back.
New to the game? Read how to play, then learn the solving techniques that take you from easy to expert.
Choose your level
How our levels are set
Many sites rate a puzzle by how many digits it starts with. That is a rough guide at best: a puzzle with few givens can be easy, and one with many can be hard. We grade each puzzle by solving it the way a person would and noting the hardest technique it needs. An easy puzzle falls to naked singles alone; a medium one needs hidden singles; a hard one needs locked candidates or naked pairs; an expert puzzle needs more than those.