PlaySudoku.us
Easy · Puzzle #164
5
7
3
4
6
9
6
8
2
5
7
5
2
7
5
8
3
9
1
2
1
3
2
8
6
5
7
3
4
9
1
7
8
5
7
5
1
2
4
8
3
6
9
9
2
3
6
7
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.