PlaySudoku.us
Easy · Puzzle #461
9
3
1
4
8
1
9
7
3
6
7
1
9
7
1
2
4
8
3
7
1
5
9
5
9
4
6
3
8
4
5
6
9
7
8
7
6
1
3
8
9
5
3
9
7
4
6
2
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.