PlaySudoku.us
Easy · Puzzle #29
9
8
3
6
7
7
7
6
1
4
8
3
1
5
7
6
2
4
9
1
5
3
8
2
9
3
5
4
6
9
1
4
2
7
5
8
9
1
8
9
3
2
5
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.