Smart Sudoku

Sudoku (originally called Number Place) is a logic-based, combinatorial number-placement puzzle. The objective is to fill a 9×9 grid with digits so that each column, each row, and each of the nine 3×3 subgrids that compose the grid contains 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. Features: - 4 complexity levels (Easy, Medium, Difficult and Insane) - Simple and clean design - Ability to make, validate and rule out hypothesis - Ability to show wrong answers - Ability to solve current game grid automatically - Restart current game Game is based on open source Sudoku JS project under MIT License.