Puzzle rules
First Sight Trilia
Place A, B, and C once in every row, column, and outlined irregular region. Regions may have different shapes and sizes. Equal letters cannot touch, even diagonally. Outside clues show the first letter visible from that side; empty cells do not block sight.
How to solve
Complete rules
Goal: Place A, B, and C throughout the grid. Rules: - Every row, column, and outlined irregular region contains A, B, and C exactly once. - Regions may have different shapes and sizes. Any additional cells in a region remain empty. - Equal letters cannot touch horizontally, vertically, or diagonally. - All remaining cells stay empty. - Outside clues show the first letter visible from that direction. - Empty cells do not block sight.