Sudoku Showdown
Same board.
Same board.
May the fastest win.
Classic Sudoku with a competitive twist. Invite a friend or get matched with a random player, then race the exact same puzzle, with no peeking at each other's grid. Compare times, hints and mistakes when you both finish.
What's inside
A full, polished Sudoku game first, then a friendly race on top.
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Head-to-head races
Both players solve an identical board. Times, hints and mistakes are compared after you both finish. No live board snooping.
👋
Friends or randoms
Invite a friend by username, join an invite, or get matched with a random player from the queue.
🎚️
Five difficulties
From gentle to Diabolical. Every puzzle is generated with a guaranteed unique solution.
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Pencil marks & hints
Manual and automatic pencil marks, same-number highlighting, undo, and difficulty-aware hints.