Pterodactyl: Unpin Variation with 5.Bd2
The Pterodactyl is a very varied opening, with dozens of variations. One of the most important is the unpin variation 1.e4 g6 2.d4 Bg7 3.Nf3 c5 4.Nc3 Qa5 5.Bd2!?, setting up a discovered attack on the queen. Here is how I think Black should handle it: