PlaySudoku.us
Easy · Puzzle #902
7
8
3
8
3
7
5
4
2
1
9
1
2
8
4
7
5
8
6
9
4
3
7
2
1
2
6
8
7
2
5
5
8
1
9
3
7
7
4
6
9
1
3
7
8
5
4
6
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.