PlaySudoku.us
Easy · Puzzle #308
9
8
4
2
1
5
4
6
8
2
9
6
2
1
3
9
5
8
2
9
1
4
3
7
8
4
9
5
6
2
1
4
2
6
8
7
1
4
7
8
3
2
6
4
1
4
8
3
7
2
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.