Puzzle rules
First Sight ABCD
Place A, B, C, and D so each letter appears exactly once in every row and column; all remaining cells stay empty. Each outside clue shows the first non-empty letter visible from that direction.
How to solve
Complete rules
Goal: Place A, B, C, and D in the grid. Rules: - Each row and column must contain A, B, C, and D exactly once. - All other cells remain empty. - An outside clue shows the first non-empty letter seen when looking into that row or column from the clue’s side.