All Brainium Sudoku games are solvable and there is only one verified solution per Sudoku board.
If you are stuck or need help in your game, try these tips:
- The Hint feature, located at the top of the game as a question mark, is a tool that provides a number aid and helpful solving strategies.
- The unlimited Undo feature, located at the top of the game as a left arrow, let's you undo your previous moves.
- The Redo feature, located at the top of the game as a right arrow, let's you redo any moves that your previously undid.
- If you do not have Auto-Check Errors enabled, there is a Check at the top of the game that checks your existing work.
If you would like to enable Auto-Check Errors, which immediately notifies you of any errors when filling the square, go to the Sudoku Options in the bottom menu bar > toggle on Auto-Check Errors.
If you would like to turn on or off your Notes, tap the Sudoku screen to bring up the bottom menu bar > Tap Options > Go to the Notes section and choose the following notes mode:
- Manual: Enter and clear notes yourself
- Auto-Clear: Notes that are manually inputted are cleared automatically after selecting the final number
- Auto-Fill : Notes are entered and cleared automatically
Keep in mind that when you select a new notes mode, you will be prompted to restart your current Sudoku game.
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