The Trompowsky Attack: c6 Variation – Playing White with 3.Nd2

After 1.d4 Nf6 2.Bg5 c6, you have left the beaten path of the main Trompowsky (which often sees 2...Ne4 or 2...d5). Black's ...c6 aims to support ...d5 and create a solid centre, but it also weakens the b6-square and gives your queen's knight a natural home on d2. By playing 3.Nd2, you avoid the pinning ...Bg4 ideas that can arise after 3.Nc3, and you keep your c-pawn free to advance later. The knight on d2 is ready to hop to f1 or even b3 if needed, but its main job is to support the next move — d5 — which the engine rates as the best continuation. You're not rushing; you're asking Black to declare their intentions first.

Stockfish's top line after 3.Nd2 is d5, followed by e3, Bf5, and Ngf3. Let's unpack that: you push your d-pawn to d5, gaining space and kicking Black's knight. Black will likely capture with ...cxd5, and you recapture ... but with which piece? The engine wants e3 first, developing the bishop and keeping the e4-square solid, then Bf5 puts pressure on the queenside light squares. Finally Ngf3 brings your other knight into play. This setup is rock-solid: you control the centre, your pieces are active, and Black has to work for equality. Against weaker opposition, that slight +0.14 edge can feel much bigger.

In practice, Black has tried several moves here. Here's how White scores against each of the main options, based on over 1,200 games: - d5 (472 games, White scores 50.6%): The most common reply and the engine's favourite. Black challenges the centre head-on — expect a symmetrical pawn structure and a slow manoeuvring game. - Qa5 (171 games, White scores 48.0%): An active queen sortie. Black pins your bishop and eyes the a4-square. White scores just under half, so be careful — keep developing and don't let the queen cause trouble. - e6 (156 games, White scores 51.9%): This is actually an inaccuracy that costs Black about 0.8 pawns. The engine says Black should have played d5 instead. Punish it by occupying the centre with d5 yourself. - d6 (120 games, White scores 46.7%): A passive but solid setup. You have the edge — just keep developing with e3, Bf3/Be2, and 0-0. - Qb6 (90 games, White scores 45.6%): Another queen move attacking the b2-pawn. Your best response is to ignore the pawn and play d5, gaining space. - h6 (88 games, White scores 53.4%): Black asks what your bishop is doing. Retreat to h4, f4, or exchange — your highest-scoring line. Keep it simple.

If Black plays 3...e6, you have a clear opportunity. The statistics show it's an inaccuracy, and the engine says it costs Black roughly 0.8 pawns of advantage. Why? Because ...e6 blocks Black's light-squared bishop and doesn't challenge your control of d5 at all. Your plan is straightforward: 4.d5! Push immediately, opening up the centre while Black's pieces are still cramped. After 4...exd5 (or 4...cxd5, both are fine for you), you recapture and enjoy a space advantage. Black's bishop on c8 is stuck behind the pawn chain, and your knights can find great squares. Many club players don't realise how serious this inaccuracy is — in the drill below, if Black chooses ...e6, the engine will show you exactly how to capitalise.