Hi Sudoku

We understand that puzzles with multiple answers only lead to frustration. Therefore, every puzzle in Hi Sudoku is precisely designed to ensure a single correct solution, making the solving process fulfilling.

⁍ Logical Solving:

We believe that solving Sudoku is an intellectual pleasure, not a tedious task. In Hi Sudoku, each level can be solved through logical reasoning, not mere trial and error. This design makes each puzzle-solving experience an intellectual exploration and challenge.

‣ Reasonable Difficulty:

Our difficulty levels are designed to bring Sudoku joy to players of all skills. Unlike simply basing the difficulty on the number of given digits, each puzzle in Hi Sudoku is carefully designed based on the solving skills required. From easy to devil, each step brings new challenges and fun.



▦ Convenient UI System



To provide a smooth gaming experience, we offer the following convenient tools:



⁍ Noting Tool:

Noting potential numbers is essential for solving complex puzzles. In Hi Sudoku, you can easily switch between number input and noting mode, or use a quick swipe for faster operations. This design ensures a more fluid and efficient gameplay.

⁍ Erase and Undo Tools:

If you make a mistake, no worries. Use the erase tool to easily remove errors, or the undo tool to revert to the previous step. Hi Sudoku’s flexible undo feature allows you to correct and continue your game at any time.

⁍ Highlighting:

Select numbers on the board or long-press numbers on the keypad to highlight corresponding numbers on the board, helping you identify and solve puzzles faster.



▦ Smart Help System



⁍ Stuck on a Level?

Encountering a tough challenge? Hi Sudoku’s smart hint system provides key guidance for your next move, explaining not only what to do next but also why. Our goal is to help you learn new techniques through smart hints, gradually reducing your reliance on them.

⁍ Auto-Noting:

Tired of noting candidates one by one? Hi Sudoku’s auto-noting feature significantly eases your burden. You can choose to note a single selected cell or note all the empty cells at once, making your gameplay more relaxed and enjoyable.