Keep several Sudoku puzzles in progress and return to each one whenever you like. This update also adds clearer hints and more ways to make solving comfortable. New • Resume unfinished puzzles from the Problem Book without losing your numbers or notes. • Work through hints in three stages: focus on the relevant cells, understand the reasoning, then apply the next step. • Redo an action after using Undo. • Choose a hidden timer, an analog timer, or a digital timer that updates every 10 seconds. Larger notes and darker paper colors are available in Settings. Improved • Your lifetime completion count and play time are preserved as your recent history grows. • Night paper changes the open Settings screen immediately. • Resuming a puzzle preserves its play mode and daily puzzle date, and hint explanations respect previously eliminated candidates.

Ver1.2 • Rebalanced all five levels—Intro, Easy, Medium, Hard, and Expert—based on the logical techniques needed to solve each puzzle, not just the number of given numbers. • Puzzles are now generated automatically for the selected difficulty, and every generated puzzle has a unique solution. • Hard puzzles introduce techniques such as pairs and triples, while Expert puzzles may require advanced strategies such as X-Wing. • Hints now support advanced logical techniques.

Improved handwriting recognition. After learning is complete, digits already used in the same row, column, or 3x3 block are deprioritized to help reduce accidental entries. Improved cases where handwritten “3” was too easily recognized as “6”. Enhanced the washi paper background texture so it is easier to distinguish from the plain background. Reorganized settings. Language selection has moved into Settings, and Settings can now be opened from the top-right of the Home screen. Language changes now update immediately within the Settings screen.