Sudoku with real-time generation
All Sudokus on Brain-Stuff are generated in real time as soon as you click “New game”. There are no pre-made puzzles from a database – every Sudoku is created individually and should be unique.
💡 Tip: On older or smaller devices, generation can take a few seconds because a complex Sudoku with a unique solution is calculated.
Three Sudoku sizes
9x9 Sudoku – the classic
The classic Sudoku format everyone knows: 9 rows, 9 columns, and the digits 1–9. Perfect for beginners and experienced players.
10x10 Sudoku – the upgrade
One step bigger: 10 rows, 10 columns, and the digits 1–10.More cells mean more combinations and higher complexity. Available block layouts 2x5 or 5x2.
12x12 Sudoku – the challenge
The largest variant for real Sudoku fans: 12 rows, 12 columns, and the digits 1–12.Strategic thinking is essential here. You can choose from four block layouts 3x4, 4x3, 2x6 or 6x2.
Difficulty levels
- Easy: Many given numbers, ideal for beginners and relaxed playing.
- Medium: A balanced difficulty level for regular Sudoku players.
- Hard 🏆: Generated relatively close to the theoretical minimum of given numbers.
⚡ Pro tip: If you are new to Sudoku, it is recommended to start with “Easy” or “Medium”.
Funktionen
- New game: Generates a brand-new Sudoku "on the fly"
- Reset: Clears all your entries and restarts the current puzzle
- Check game: Checks your current entries for mistakes.
- Show solution: Displays the full solution
- Print: Print the Sudoku and solve it on paper; the solution can be printed as well.