PlaySudoku.us
Easy · Puzzle #821
3
5
8
7
2
4
1
4
8
6
3
5
1
5
4
9
2
3
8
3
8
5
7
2
5
4
9
2
7
3
1
6
1
3
8
1
3
7
8
4
5
8
6
2
7
7
4
9
1
3
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.