PlaySudoku.us
Easy · Puzzle #605
4
1
5
7
9
7
9
8
4
3
9
1
8
4
6
4
7
3
8
6
5
6
4
1
2
3
8
6
2
1
5
4
6
5
2
2
6
3
7
4
1
8
9
5
9
8
3
1
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.