PlaySudoku.us
Easy · Puzzle #146
3
4
9
8
2
2
9
4
9
2
6
5
8
1
6
9
5
3
7
8
8
2
1
3
2
5
4
6
3
2
8
4
1
3
1
5
4
2
9
4
9
8
6
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.