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No-touch Masyu (367)
Instruction:
Draw a single, non-intersecting loop that passes orthogonally through all circled cells. The loop must go straight through the cells with white circles, with a turn in at least one of the cells immediately before or after each white circle. The loop must make a turn in all the black circles, but must go straight in both cells immediately before and after each black circle.
Unused cells (cells that the loop does not go through) cannot share an edge with each other.