GM Dzindzichashvili concludes his Trompowsky Trio with an edition focused on 3. Bh4. He doesn't hide his disdain for the variation but he does caution you about many traps that could befall the unwary player. Black often has open g- and c-files, while White opens his d- and f-files. That's a strange imbalance, but it rewards the more prepared player. Watch and see how Black can attempt to punish White, but take note of the plentiful ways the second player can get mated right out of the opening!