We don't celebrate Thanksgiving on this side of the pond, but let me take the opportunity nonetheless to thank Jrobi for all he's done for the chess-vlogging world. Can't offer you a turkey, J, but how about a tasty little chess tactic from one of my games, and one which I sadly missed at the time. The position arose from the French advance. White's down in material, and things are beginning to look really bleak now that the knight's been pinned (POSITION A). So I decide to exchange pawns; White takes back and then snatches up my d-pawn up with his bishop (POSITION B). And here I was desperately looking for the finishing blow. There are several good moves, but one's particularly devastating. Can you spot it?