Sudoku (数独) is a logic-based number-placement puzzle. In classic sudoku, the objective is to fill a 9×9 grid with digits so that each column, each row, and each of the nine 3×3 sub-grids that compose the grid (also called "boxes") contain all of the digits from 1 to 9. The puzzle setter provides a partially completed grid, which for a well-posed puzzle has a single solution.
# Install dependencies
npm install
# Run development server
npm start
Sudoku is often categorized based on its difficulty to solve the puzzle. Easiness to solve depend on number of clues provided and number of alternatives available for the next easiest cell.
19-26 clues
27-36 clues
36-47 clues