Sudoku ArtWhat is a Sudoku challenge?
A Sudoku challenge shares the exact same grid with one or several people, then compares results. Each participant plays the grid on their own; at the end, a leaderboard shows completion time, errors and hints used by everyone.
One-on-one or group challenge
You can send a challenge to a single person for a 1-vs-1 duel, or turn on group mode so a whole team, family or class plays the same grid and lands on a shared leaderboard. Participants can join with or without creating an account.
Personalize your challenge with a photo
Just like a regular game, a challenge can reveal an artwork, a personal photo, or stay in classic mode with no image. It's a great way to send an original challenge built around a memory or a photo that means something once the grid is solved.
Compare your scores
A challenge's leaderboard factors in completion time, but also errors and hints used: each error or hint adds a two-minute penalty to the final score, to fairly rank fast players against careful ones.
Start with an easy grid or try something tougher before sending your own challenge.