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Killer Hidden Arrows Sudoku (973)
Instruction:
Apply classic sudoku rules. Digits places in each marked cage must sum to the total given in its top-left corner. Digits must not repeat in cages. All cages contain a standard arrow clue, which is hidden. The circle part of the arrow will be at one end of the cage with the arrow extending along the cage to the other end. The arrow must fill the entire cage. The circle may enclose any number of digits, and multi-digit totals are read in the direction of the arrow.