Classic Sudoku

Smart it

Contains adsIn-app purchases

About this game

■ Classic Sudoku, nothing in the way

A 9×9 grid, digits 1 to 9, one rule.
Every row, every column and every 3×3 box holds each digit exactly once.
Every puzzle has a single solution — it can always be solved by logic, never by guessing.

■ Six difficulties

Quick · Easy · Medium · Hard · Expert · Extreme.
Up to Easy, spotting single candidates is enough. From Expert on, it isn't.
Each difficulty has its own level, with stars counting toward the next one.

■ Journey

Meadow · Cherry blossoms · Seaside · Snowfield · Night sky… walk through twelve scenes, one stage at a time.
Difficulty rises gently, and a treasure chest with coins waits at the end of each chapter.
🎯 Mission stages ask for no hints, no mistakes or a time limit — keep it to earn three stars.

■ Mini Sudoku 6×6

Numbers 1 to 6, about two minutes a game. Perfect for a short break.

■ Daily Challenge

One new puzzle every day — the same puzzle for everyone on that date.
Pick earlier days from the calendar; a trophy marks every day you finished.

■ Tools that help you think

· Notes — pencil candidates into a cell. Placing a digit clears it from the notes around it.
· Quick input — pick a digit first, then tap cells. When a digit is complete, it moves on to the next.
· Highlighting — tap a digit on the keypad to light up every copy of it on the board.
· Hints — fill one stuck cell with the right digit. Three per puzzle.
· Undo — take back your last move.

■ Three mistakes, and one more chance

A wrong digit stays red and counts as a mistake. Three end the game —
but watching an ad lets you continue once per puzzle.

■ Your record

Solved count, win rate, best and average time per difficulty, and your streak.
The current puzzle is saved, so you pick up exactly where you left off.

■ Also

· Light and dark themes
· English, Korean, Japanese, Simplified and Traditional Chinese
· No account, no sign-up. Progress stays on your device.

What’s new

Hints are now sold one at a time for 100 coins.