Here's an attractive endgame study from the late great Georgian study composer, on the 100th anniversary of his birth:
Nadareishvili 1952; White to move and draw
His intended solution works, but after the first move there's a second, completely different but equally successful way to achieve the draw. I'd say more, but the hint would be too big!
When you're ready to see one (or both) solutions, click here.