Sudoku
Sudoku
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Puzzle · 1 player
How to play
Nine rows, nine columns, nine boxes: each takes every digit from 1 to 9 exactly once. Every puzzle has a single solution and needs no guessing, only logic. Five levels from Very easy to Expert, pencil marks, limited hints and a daily puzzle that is the same for everyone help you grow your streak and unlock themes and achievements.
- 1Tap a cell or pick it with the arrow keys, then press a digit on the large keypad below.
- 2Every row, column and 3×3 box holds each digit 1-9 only once. A wrong digit turns red.
- 3Not sure? Turn on Notes and pencil in the candidates; when you place the right digit, matching notes in its row, column and box clear themselves.
- 4Stuck? Hint fills the selected cell (limited uses). The small number on each key shows how many of that digit are left.
- 5Solve the daily sudoku every day to grow your streak. Open the star button for themes, achievements and the optional 3-mistake limit.
Keyboard
Arrows select a cell, 1-9 places a digit, N toggles notes, Backspace erases, Z undoes, Q gives a hint, E opens themes and achievements. Esc pauses.
Touch screen
Tap a cell to select it and use the large digit keys below. Undo, Erase, Notes and Hint sit right above the digits.
Controller
Just connect a controller (on a TV or a computer). D-pad or left stick: move and navigate menus · A: select, hit, drop · B: undo or back · X: flag · Y: undo or zoom · LB / RB: switch tab or piece · Right stick: scroll the page · Start: pause · View button: full screen. Spark League keeps it simple: pick a button with the left stick and press A (on the ring, A strikes or blocks); in a fight the d-pad right and left advance and back off; LB / RB switch tabs (targets in a fight). A second controller plays the top side in Air Hockey and the second player in Spark League fights with friends.
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