Sudoku Solver with Dancing Links

The Rules

Fill in the grid so that every row, column, and 3×3 box contains the digits 1 through 9 without repeating any numbers.

Getting Started

• Select difficulty level from the dropdown menu
• Click "New Game" to generate a new puzzle
• Click on empty cells and type numbers to fill them in
• Initially filled numbers cannot be changed

Solver Mode

• Switch to "Solve" mode to use the automatic solver
• Click "Solve" to instantly see the solution
• The solving process will be displayed in this panel
• Use controls to pause, resume, or step through the process
• Adjust the speed using the slider below

About Dancing Links

This solver uses Donald Knuth's "Dancing Links" algorithm, a highly efficient approach for solving exact cover problems like Sudoku. Watch the algorithm work step-by-step to see how it intelligently backtracks and finds solutions.