Featured Puzzle: Hitori #3 – Doppelgängers

The masquerade ball is in full swing, but you realize that shapeshifting monsters have mixed into the crowd. Fortunately, they don’t fully grasp logical instructions. Many of your guests wore the same costume, and you ask them to stand in a grid where nobody in any row or column is dressed the same. Any duplicates must be doppelgängers!

• Shade cells so that all remaining unshaded cells have no duplicates in any row or column.
• There are 10 different costumes, but they might not all appear in a given row or column.
• Shaded cells may not be orthogonally adjacent to another shaded cell.
• Unshaded cells must form one contiguous orthogonally connected area.