Neon Sudoku
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About the game
Sudoku with a single solution: fill the 9×9 grid so that no digit repeats in any row, column or 3×3 box.
How to play
- Pick a cell and press a digit.
- A wrong digit is not placed and counts as a mistake.
- Three mistakes end the game. A solved grid opens the next level.
Controls
- ⌨️ KeyboardArrows — cell, 1–9 — digit
- 📱 TouchTap a cell, then a digit below
- ⏸ PausePause button or the P key
Neon Sudoku is the classic 9×9 number puzzle. Every row, every column and every 3×3 box must contain the digits from 1 to 9 exactly once.
Each puzzle is generated on the spot and has a single solution, so it can always be solved by logic alone. A wrong digit is not placed but counts as a mistake; three mistakes end the game. Later levels start with fewer given digits.
Tips
- Start with the digit that already appears most often on the board — it has the fewest places left.
- Select a filled cell to highlight all cells with the same digit; the gaps become obvious.
- The number pad dims a digit once all nine are placed: use it to see what is left.
Questions and answers
Do I need to guess?
No. Every puzzle has exactly one solution reachable without guessing.
How is the score counted?
Ten points for each correct digit and 200 points times the level for a completed grid.