What is the fine-grained topic of the following text: Based on about 10,000 games, 7 of 10 players will capture on e4 with the pawn (3...dxe4) leading directly to a Blackmar-Diemer Gambit, 2 of 10 will play 3...Nxe4 (Huebsch) and the other one will play something else, most often 3...e6 (French Defence). Only return the topic.
Chess strategies and moves