PlaySudoku.us
Easy · Puzzle #740
3
6
2
8
5
7
4
4
3
7
6
3
4
2
1
2
4
9
1
5
6
1
9
6
2
7
4
6
4
1
5
7
9
2
3
6
9
5
4
1
3
6
8
8
7
2
6
5
9
Graph coloring and Sudoku are equivalent problems. Each cell is a node; edges connect cells that share a house. Solving Sudoku = coloring the graph with 9 colors.
Graph coloring and Sudoku are equivalent problems. Each cell is a node; edges connect cells that share a house. Solving Sudoku = coloring the graph with 9 colors.
Graph coloring and Sudoku are equivalent problems. Each cell is a node; edges connect cells that share a house. Solving Sudoku = coloring the graph with 9 colors.
Graph coloring and Sudoku are equivalent problems. Each cell is a node; edges connect cells that share a house. Solving Sudoku = coloring the graph with 9 colors.