Blackmar-Diemer Gambit: Zeller Defense as Black

This opening tests whether you can stay solid while White throws the centre forward early. Your bishop on f5 is already doing useful work, and the main practical task is to meet White's initiative without falling behind in development. The position is lively, but the numbers show that Black is not under severe pressure here. If you keep your pieces active and respond accurately, you can reach a playable middlegame instead of getting dragged into trouble.

Stockfish rates this -0.45, a small edge in your favour. That means you are slightly better here. The engine's best move here is g4, continuing g4 Bg6 Nge2 e5. This tells you that active counterplay matters more than passive defence: White is trying to gain space and tempo, so you should be ready to answer with energetic development rather than retreating into a cramped setup.

Across 679,114 games at this exact position, White wins 52.8%, draws 3.1%, Black wins 44.1%. That is a lot of practical experience, and it shows that White scores a little better overall, even though Black still has chances. The most-played continuation is f3, with 439,761 games, so you should expect White to challenge the centre directly very often. Other common tries include Bf4, Bc4, g4, Be3, and Qe2.

Two common choices are marked as inaccuracies here: Bf4 is an inaccuracy, and Be3 is an inaccuracy. In both cases, the listed better move is g4, so White can lose time if they choose a slower developing idea instead of acting energetically. For Black, this is useful to know because you should stay alert for the most active White plans, not just the most popular ones. If White hesitates, you can often meet the position with more confidence.