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Odd Even Bridge Sudoku (404)
Instruction:
Apply classic sudoku rules. Some circled cells are connected by a bridge. An odd digit in a circle denotes the number of odd digits on the bridge. An even digit in a circle equals the number of even digits on the bridge. The digits on the circles are not counted. If a circled cell is connected by more than one bridge, an odd/even digit in the cell denote the number of odd/even digits on each connected bridge (not the sum of all connected bridges).