Sudoku is a logic-based number-placement puzzle. The objective is to fill a 9x9 grid so each column, row, and 3x3 sub-grid contains digits 1-9 exactly once.

Building a Sudoku game involves implementing puzzle generation, validation logic, and a user interface that lets players fill in the grid. It’s a great project for practicing constraint satisfaction and backtracking algorithms.

Build your own Sudoku is available with a project breakdown on Coding Challenges.