How to play
- Each person has exactly one item from every category, and no two people share an item.
- Tap a square once for ×, twice for ●, and a third time to clear it. Drag to mark × on several squares.
- ● means the two go together. × means they don’t. Every row and column of a block ends with one ●.
Keyboard: arrows to move, space to cycle, x for ×, o for ●.
How to solve logic grid puzzles