FIRST PAGE!!
FINE PUZZLE!
Great to have seen that over the board in the heat of battle. Planinc and Vaganian. Two names from the past.
Yes, Qc6+ is just as good.
You should post the whole game not only last 2 moves. The game is amazing (like some other games of Planinc).
This position occurred in a game in 1975, Vaganian - Planinc. Here it is in all its brilliance.