Night Mosaic
Shifting corners
Reverse Sudoku · iOS and Android
From a full board to your own puzzle. Remove numbers and discover the logic of every move. What you leave behind forms the path to the solution.
The mobile game is preparing for release in stores.

Every removal has a reason
Treat a cell as empty. If the numbers in its row, column and region rule out all eight other digits, you can remove its number. Exactly one candidate must remain to recover it.
If you need to fill other empty cells first, this move is not valid yet. The number you remove first changes your next choice.
Beside this is a small web demo with classic 3×3 regions. The mobile game’s Mosaic levels, daily board and save system are not included.
Tap a number. It is removed only if exactly one candidate remains in that cell.
5 levels. 5 different perspectives.
In Mosaic, the classic boxes give way to
irregular regions of nine cells.
Shifting corners
Stepped borders
Elongated regions
Curving borders
New directions
Removal targets: 5 · 8 · 13 · 21 · 34. A new Fibonacci step in every level.
Inside the game
The proof strip shows why a move is valid. The solution trace restores removed numbers in reverse order, letting you follow your own decisions step by step.
A daily board and a freeform workshop, three themes and ten languages. Your last game and personal records are saved on your device.
The images were prepared from the current Flutter interface. On the right are Mosaic level selection and details of a move’s reasoning.
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