COMPETE · LIVE
Multiplayer Sudoku Battles
Sudoku Genius supports private friend rooms and a competitive foundation where players solve the same validated puzzle under the same rules.
Private battles
Create a six-character room, share the permanent invite and let duel or team players join without exposing a puzzle solution.
Ranked fairness
Server-side validation checks the submitted solution and ignores client-supplied rating deltas. Glicko-2 updates use the verified result.
Reconnect protection
Short network interruptions receive a grace period, while an intentional quit is treated separately from a transient disconnect.
Privacy and cost control
Only connected features require a network. Ordinary Sudoku remains local and offline, and player display names are sanitized before use.