PlaySudoku.us
Easy · Puzzle #443
2
4
9
8
1
6
1
9
6
9
1
2
4
7
4
3
2
8
2
5
1
6
7
1
8
6
2
3
5
4
8
2
4
9
5
6
2
8
7
3
9
4
5
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.