PlaySudoku.us
Easy · Puzzle #263
8
1
6
5
3
4
7
2
3
5
6
2
7
1
8
4
7
1
9
6
3
4
8
2
6
9
5
1
9
7
4
8
7
1
5
4
3
6
9
2
8
4
1
4
7
6
8
2
9
6
1
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.