PlaySudoku.us
Easy · Puzzle #245
5
8
4
6
2
1
7
9
3
2
4
1
6
5
8
2
6
7
9
4
9
7
2
3
2
6
4
5
8
9
4
9
8
2
1
6
1
8
4
6
2
3
4
5
6
2
9
1
3
7
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.