Sudoku Blueprint · Help & frequently asked questions
Every puzzle is generated on the spot from a random seed and checked to have exactly one valid solution, so it isn't pulled from a fixed, repeating pool.
Every puzzle has a code. Entering the same code as a friend (with the same difficulty) generates the identical grid, so you can compare times or pick up a puzzle you started earlier.
Hard and Expert require the one-time in-app purchase, plus reaching the win-count shown on each difficulty card (for example, "Medium 2/3"). Both conditions are needed — purchasing unlocks eligibility, and solving enough puzzles at the previous difficulty unlocks access.
Open the purchase screen and tap "Restore Purchases," signed in with the same Apple ID used for the original purchase.
Tap the speaker icon on the start screen to mute the music at any time. Ads are removed automatically once you make the one-time purchase.
Please email us with your device model, iOS version, and the steps that led to the issue — a screenshot helps too.