Snake Rush
A familiar arcade game for a quick break.
Games & puzzles
PUZZLES & BRAIN GAMES
Sudoku Online
Clean, distraction-free Sudoku with pencil notes, conflict checks, and unlimited puzzles.
SUDOKU GUIDE & CONTROLS
Rules & Keyboard Shortcuts
How to Play
Fill every row, column, and 3x3 block with numbers 1 to 9 without repeating any number. Deduce values logically without guessing.
Pencil Notes (Candidate Mode)
Press N or click Notes to jot down possible numbers in a cell. Entering a confirmed number automatically cleans up peer notes.
Desktop Keyboard Shortcuts
1–9: Enter number • Arrows: Navigate grid • Backspace: Erase • U / Ctrl+Z: Undo • H: Hint.