PlaySudoku.us
Easy · Puzzle #380
2
3
7
5
6
1
4
5
8
1
4
2
3
6
1
2
3
5
8
8
2
1
7
4
1
8
2
9
5
8
2
6
4
5
2
9
2
9
4
5
9
8
5
4
7
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.