All Brainium Sudoku boards are solvable and offer one unique solution.
 
If you are finding that there may be multiple solutions present, access the Checkmark button in the top right corner, which will check your work and highlight invalid number placements. If you do not see the checkmark, it is likely that you have the Auto-Check Errors feature enabled in the Options tab.
 
If you're still having difficulties with the game solution, we welcome screenshots of finished boards with your alternative solutions to our support team over chat. Please tap the chat button in the top right corner to send a message to our support team.
 
 

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