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Evil · Puzzle #925
7
8
6
3
4
9
7
5
6
3
5
6
5
7
8
9
4
9
9
2
1
5
8
"The mass of men lead lives of quiet desperation." — Henry David Thoreau
"The mass of men lead lives of quiet desperation." — Henry David Thoreau
In combinatorics, the pattern formed by Sudoku clue cells is studied as a problem in 'hitting sets' and transversals.
In combinatorics, the pattern formed by Sudoku clue cells is studied as a problem in 'hitting sets' and transversals.