Opening guide
Trompowsky Attack: Plans, Structures and Variations
Published Updated
The Trompowsky Attack through the 2.Bg5 pin, doubled-f-pawn choices after Bxf6, the ...Ne4 bishop chase, and the e4, ...c5, and ...d5 breaks.
On this page
- Move-order records
- 10
- ECO coverage
- A45
- Reference move order
- A45 · 1. d4 Nf6 2. Bg5
- Position after reference line
- Black to move
Opening character
After 1.d4 Nf6 2.Bg5, White develops outside the pawn chain and threatens to exchange the f6-knight before choosing c4 or Nf3. Because no knight stands on c3, the opening avoids many standard Indian move orders. Black can challenge the bishop with ...Ne4, build with ...e6, or attack d4 with ...c5.
The exchange Bxf6 is valuable when doubled f-pawns or the loss of a central defender matters; it is not automatically an improvement. After ...exf6, Black gains a half-open e-file and the bishop pair while accepting f7–f6 doubled pawns. After ...gxf6, Black gains a half-open g-file and may build a broad centre. White must compare those dynamic resources with the structural damage.
Central and pawn structures
Classical ...e6 positions can leave White with d4 and e4 against Black’s ...d5 or ...c5 pressure; a capture on f6 is then usually met by a queen or g-pawn recapture. In lines where the e-pawn remains on e7, Bxf6 exf6 gives Black pawns on f7 and f6 that control e5 and g5 but can become targets.
After ...Ne4, the bishop often retreats to f4 or h4. Black has moved the same knight to a central square that can be attacked by f3, but f3 weakens e3 and the king. Raptor systems with h4 keep the bishop question unresolved and create kingside possibilities at the cost of another non-developing pawn move.
Plans for both sides
White
- Exchange on f6 only when the chosen recapture creates a structure White can attack or removes a defender needed for e4.
- Build e4 with Nc3 or Nd2 and supporting pieces when Black’s pressure on d4 does not make the broad centre unstable.
- Against ...Ne4, choose Bf4, Bh4, or h4 from the resulting pawn structure rather than trying to preserve the bishop at any price.
Black
- Use ...Ne4 to force a bishop decision or another concession only when f3 will genuinely weaken White’s centre.
- Challenge d4 with ...c5 and ...Qb6, combining central pressure with a possible attack on b2.
- After doubled f-pawns, use the bishop pair, the half-open e- or g-file, and an ...e5 break before White can blockade the structure.
Key pawn breaks
e4— White builds a broad centre and uses the removal or displacement of the f6-knight....c5— Black attacks d4 immediately and may combine the break with ...Qb6 against b2....d5— Black establishes a firm central share and limits White’s e4 expansion.
Piece-placement logic
White’s b1-knight develops to c3 when e4 is the priority and to d2 when the c-pawn must challenge the centre. The g1-knight can reach f3 after the bishop has defined itself. Queen moves to d2, c2, or b3 should support a specific centre rather than a generic kingside attack.
Black’s f6-knight may move to e4, while the b8-knight uses c6 or d7 according to the c-pawn. The c8-bishop often belongs on f5 or g4 before ...e6, and the f8-bishop becomes especially valuable if White exchanges the other black knight for a bishop.
Recurring tactical themes
- After ...Ne4, f3 can trap or drive the knight only if ...Nxg5, ...e5, or ...c5 does not open the centre against White’s king.
- The Poisoned Pawn line uses ...Qb6 against b2 while White develops Nc3; queen traps and central counterblows must be calculated together.
- A quick e4–e5 can gain time on a knight, but it may also leave an unsupported d4-pawn exposed after the centre advances.
Practical errors to avoid
- White plays Bxf6 solely to damage the pawns without valuing Black’s bishops and half-open file.
- Black jumps to e4 but has no answer to f3 and a supported central expansion.
- White keeps the bishop with several moves while Black completes development and attacks d4.
- Either side mixes a ...Ne4 plan with a structure in which ...c5 or e4 is the urgent move.
How the main branches differ
Who this repertoire suits
The Trompowsky gives White an independent answer to 1...Nf6 and reduces immediate transpositions to the main Indian defences. It does not avoid structural decisions: White must understand Bxf6 recaptures, the ...Ne4 chase, and Black’s pressure on d4. Black can choose a solid ...e6 centre or more direct ...Ne4 and ...c5 play.
From understanding to practice
Use the guide to identify the structure and the pawn break you are aiming for, then rehearse only the branches you actually meet. The exact catalogue records preserve move-order detail without pretending that every named position needs a separate lesson.