Launching today

Sudoku Corner

Launching today

Ranked 1v1 sudoku with Elo, a monthly league and no ads

2 followers

Ranked 1v1 sudoku with Elo, a monthly league and no ads

2 followers

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Race a real player on the same sudoku, or relax with solo puzzles. You see your opponent's live progress (never their digits); mistakes and hints add time and the lower total wins. Separate Elo ratings for Beginner, Intermediate and Expert, a monthly SC League with champion badges, daily challenges, match replays and a free technique academy from hidden singles to X-Wing. Web + Android, free, no ads.

Free

Launch tags:Android•Puzzle Games•Free Games

Launch Team

Maker

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Hi Product Hunt! I built Sudoku Corner because I wanted what chess players have: a rating that means something and a real opponent on the other side. The hardest part was making a race fair over flaky mobile connections. Time is measured on the server, and when one player finishes, the other gets exactly the time they still need to catch up (their penalty difference plus a few seconds for the network), so a slow phone never decides a match. Puzzles are graded with Sudoku Explainer, so a division is a real difficulty band, and the Expert puzzles need techniques like X-Wing and XY-Wing. You can try a solo puzzle without an account. I'd love feedback on the ranked rules, the Expert puzzles and the first five minutes of onboarding!

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23h ago