PlaySudoku.us
Easy · Puzzle #65
9
7
2
5
4
1
8
6
2
9
7
5
7
4
9
8
3
7
9
2
3
1
8
7
3
1
8
5
9
2
2
8
3
4
3
6
4
2
5
1
9
7
6
2
8
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.