Draw a single closed loop that travels through the grid horizontally and vertically. The loop must pass through every pearl (circle) and follow two rules:
White pearl ○ — the loop goes straight through. It must turn in at least one of the two adjacent cells.
Black pearl ● — the loop must turn at the pearl. It must go straight through both adjacent cells on either side of the turn.
The loop may not cross itself and must visit every pearl exactly once as part of a single connected closed path. Empty cells may or may not be visited.
Pearl Path is inspired by Masyu, a logic puzzle popularised by Nikoli (Japan, 1999).