Killer sudoku
owlpuzzles.com- Write 1 to 9 so every row, column and box holds each number once.
- The numbers in a dashed cage add up to its total, and never repeat inside the cage.
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Killer sudoku: hard sheet 37
2 puzzles on one page and the answers on the next. Every sheet number from 1 to 999 has its own puzzles.
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