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Expert · Puzzle #945
7
6
9
7
3
5
4
2
1
3
5
2
8
1
6
7
9
5
5
7
2
6
4
4
9
"Gold medals aren't really made of gold. They're made of sweat, determination, and a hard-to-find alloy called guts." — Dan Gable
"Gold medals aren't really made of gold. They're made of sweat, determination, and a hard-to-find alloy called guts." — Dan Gable
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.