Puzzle rules
Blocked First Sight
Place A, B, and C once in every uninterrupted horizontal or vertical white section containing at least three cells. Black cells separate sections, so a row or column may contain more than one ABC set. Outside clues show the first letter seen and look through black and empty cells.
How to solve
Complete rules
Goal: Place A, B, and C in every qualifying white section. Rules: - Every uninterrupted horizontal or vertical section of three or more white cells must contain A, B, and C exactly once. - Any additional cells in that section remain empty. - Black cells separate sections, so one row or column may contain several ABC sets. - Outside clues show the first letter seen from that direction. - Black and empty cells do not block the outside sight clues.