Trompowsky

1.d4 Nf6 2.Bg5 · you play white

5 chapters, 8 moves deep. That is all of it at your level.

I show you every line first. Then I ask, and I only teach the moves you miss.

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16 plies of this opening

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Your moves are chosen by the engine and checked against 3,439,091 games (Lichess Elite (2500+ vs 2300+), 2024-12 → 2025-11); their replies are what people actually play. Evaluations from Stockfish 17.1, our own run at depth 18 (CC0 1.0 Universal), covering 100% of this course.