A45 Flank openings

Trompowsky Attack

White develops Bg5 early to disturb Black's normal Indian setup and create doubled-pawn choices.

Best for

Players who want an offbeat but principled weapon against 1...Nf6.

Study map

Start with one line, then add nearby branches.

0 started · 0 mastered

01Trompowsky AttackA45 · 2 movesnew02Trompowsky Attack: Classical DefenseA45 · 2 movesnew03Trompowsky Attack: Classical Defense, Big Center VariationA45 · 3 movesnew04Trompowsky Attack: Edge VariationA45 · 3 movesnew05Trompowsky Attack: Raptor VariationA45 · 3 movesnew

Browse all 10 lines

Open the catalogue only when you need a specific branch.

Edge Variation3 lines
Classical Defense2 lines
Raptor Variation2 lines
Borg Variation1 lines
Main line1 lines
Poisoned Pawn Variation1 lines

Mix the variations

Practice changing book replies after you know at least 2 lines.

Start 2 more

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White's plan

  1. 01 Decide whether to trade on f6 based on the center.
  2. 02 Use e4 when Black permits it.
  3. 03 Develop Nc3 or Nd2 to support the center.

Black's plan

  1. 01 Question the bishop with ...Ne4 or ...d5.
  2. 02 Use the bishop pair if White exchanges on f6.
  3. 03 Attack White's center before it consolidates.

Position fingerprint

The squares that explain the opening

f6 is the early decision point, e4 is White's space gain, and e5 can become a Black outpost.

Keep the position healthy

Practical habits

  • Trade on f6 only when the resulting structure helps your plan.
  • Build the center before launching a flank attack.