PlaySudoku.us
Easy · Puzzle #803
7
4
5
9
1
6
5
4
6
7
3
1
2
9
8
8
9
5
2
7
6
1
4
9
2
1
8
5
6
4
8
1
2
2
8
9
6
5
4
1
6
2
3
9
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.