How to play: Tap a card to flip it, then tap another. If the two match they stay open; if not, they flip back. Clear the whole board in as few moves and as little time as you can. Choose 4×4 (8 pairs) or 6×6 (18 pairs).
How it counts: A move is one pair of flips. The timer starts on your first flip and stops when the last pair is matched. A perfect 4×4 game is 8 moves (only possible with luck); 12–16 moves is a good score. On 6×6 the minimum is 18 moves; anything under 35 is solid if you focus on remembering positions. Your best score for each size is kept in this browser only.