PlaySudoku.us
Easy · Puzzle #281
7
3
5
9
8
1
9
6
2
8
8
2
1
5
3
4
2
6
8
9
2
4
6
1
7
3
6
7
3
8
2
9
4
9
7
5
6
1
2
2
3
8
7
6
2
8
7
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.