Sudoku Master: Online Puzzle

Race friends live, climb the leaderboard, and solve today's shared Daily Challenge. New puzzles, every difficulty, every day.

Sudoku Master turns the classic number puzzle into a real-time competition. Play solo at your own pace, or challenge another player live and see who solves it first — all in one clean, fast, ad-supported app from Mango Games.

WHY YOU'LL LIKE IT

• Five real difficulty tiers — Easy, Medium, Hard, Expert, and Master — graded by the actual logic techniques needed to solve them, not just how many numbers are missing.

• Live 1v1 races — Quick Match pairs you with an opponent close to your own level, so the puzzle is always fair. Prefer a familiar face? Invite a friend with a private room code and race them directly.

• Daily Challenge — everyone gets the exact same puzzle once a day, with a shared leaderboard ranked by solve time. Come back every day to keep your streak and your rank.

• XP & 100 levels — every win moves you forward. As your level climbs, so does the difficulty you're matched against online.

• Play it your way — pencil in notes, auto-check mistakes as you go, undo a wrong move, or ask for a hint. Every game gives you a generous free allowance of each, and you can top back up by watching a quick ad if you run out.

• Friends & leaderboards — add friends by username, track your head-to-head record, and see where you rank on the global leaderboard.

• Light & dark mode — matches your system appearance automatically, so it looks right whether you play at breakfast or in bed.

No account, no email, no password. Just open the app, pick a username, and start solving.

Have feedback or run into an issue? We read every message — reach out anytime from the Support link on our website.

Sudoku Master is developed and maintained by Mango Games.