PlaySudoku.us
Easy · Puzzle #506
3
8
5
2
4
1
9
8
9
4
1
3
2
1
6
5
2
3
9
8
6
4
2
7
1
3
9
5
2
1
4
8
6
7
8
3
5
4
6
2
5
1
8
3
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.