PlaySudoku.us
Easy · Puzzle #524
9
2
1
7
8
1
4
6
9
5
9
2
1
6
8
4
1
3
1
7
6
9
8
1
9
4
6
7
1
4
2
5
6
5
1
6
2
2
8
3
4
1
7
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.