When North plays his ♦A, West is squeezed:
- on a ♠ discard declarer wins ♠K and ♣A
- on a ♣ discard declarer wins ♣AQ
- on a ♥ discard declarer plays ♠ to West and takes the ♣ finesse after West is obligated to return the suit.
I guess it's some combination of strip and stepping stone squeeze, any ideas?