Broken Sign Blog
#030: Rail Pool (Crossing)
8 August 2022I don’t have a lot of experience with crossing loop genres yet, but I think it’s quite interesting how they mess with your intuition for how separate loop segments must connect.
Solve it online:
Rules: Draw a non-intersecting loop through the centres of all cells. Some boldly outlined regions contain number clues. If a straight loop segment visits any cells of a clued region, its length must match one of these numbers. Each number must correspond to at least one such loop segment. Question marks represent any positive integer, but numbers cannot repeat within a region.
Variant: Crossing — Two perpendicular line segments may intersect each other, but not turn at their intersection or otherwise overlap. Rail Pool clues count line length through crossings.