A	B	C

You have to identify each card as a queen or king and as a heart or spade based on the following four pieces of information.

1. There's at least one queen to the right of a king.
2. There's at least one queen to the left of a queen.
3. There's at least one heart to the left of a spade.
4. There's at least one heart to the right of a heart.

Based on a puzzle in More Puzzles for Pleasure and Leisure by Thomas L. Hirsch. New York: Abelard-Schuman, 1974.