로직나인 - 스도쿠

About 로직나인 - 스도쿠

Introducing Logic9, the definitive standard for numerical logic puzzles. Enjoy classic Sudoku anytime, anywhere, without an internet connection.

Since the puzzles are generated anew every time and there is always only one correct answer, you can solve them using logic alone, without guessing. From beginners to experts, wake up your brain without pressure.

■ Here's what makes it different: • Smart hints that explain the reasoning — Instead of just tossing out the answer, it explains the actual logic behind "why this square corresponds to this number." Your skills improve as you follow the hints. • Ads that don't interrupt the flow — There are no ads during gameplay. They are displayed only briefly after you finish solving the puzzle, ensuring they don't disrupt your immersion. • No penalty for mistakes — With no limits on lives or mistakes, you can play with peace of mind. (You can toggle the "Mark incorrect cells" feature on and off in the settings.)

■ Key Features • 5 Difficulty Levels — Easy / Normal / Hard / Expert / Extreme • Daily Challenges — Stamp completion on the monthly calendar and build up consecutive records • Infinite Puzzles — Continuously generate new problems within the app without a server • Pencil Notes & Auto-Cleanup — Note down candidate numbers, and related notes are automatically deleted once confirmed • Convenience features such as Undo, Highlighting Duplicate Numbers, Marking Incorrect Answers, etc. • Statistics — Highest records by difficulty level, daily consecutive/completion counts • Dark Mode & Light Mode, Sound & Vibration Settings • Completely Offline — Play anywhere without an internet connection

■ Personal Information There is no sign-up or login required, and game records are stored only on your device. The developer does not collect any information that identifies individuals.

Join Logic9 now and dive into the fun of number puzzles with a game every day!

Contact Email

[email protected]

• ↗Authentic Sudoku without ads! 5 difficulty levels · Daily Challenge · Smart Hints