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ECO A01Flank opening

Nimzo-Larsen Attack

The bishop looks over the pawn

  • Fianchetto
  • Hypermodern

White starts with b3 and puts the bishop on b2. Instead of occupying the centre with pawns, White lets Black build one and then undermines it. It is a hypermodern idea: the bishop on the long diagonal presses on the centre and on Black's kingside. Theory calls many of the lines equal, but White is easy to play and Black often lacks experience against it.

Interactive Opening Board

4.Bb5

♚
Black
a
b
c
d
e
f
g
h
8
7
6
5
4
3
2
1
8
7
6
5
4
3
2
1
a
b
c
d
e
f
g
h
♔
White
4.Bb5
Speed:

Moves

(7 plies • 4 moves)
4.Bb5Tabiya
  1. 1–4moves
  2. 1.
  3. 2.
  4. 3.
  5. 4.

Defining move

1.b3 — the bishop gets ready for b2

The move that opens the long diagonal for the bishop

The b3 pawn clears b2. A bishop there hits e5, g7 and the whole diagonal towards Black's kingside. White does not occupy the centre yet, but keeps it under control from a distance.

Tabiya

Bb5 against the e5 pawn

Black has pawns on e5 and d5. White does not interfere, but brings the bishop to b5 and aims at the c6 knight, which guards e5. White needs to break up this centre; Black needs to hold it and finish development without losses.

White’s plan

  • Put the bishop on b2 and keep the long diagonal open.
  • Undermine Black's pawn centre, for example with Bb5 and f4.
  • Pick a structure as the game goes: challenge d5 with c4, or go for a double fianchetto.

Black’s plan

  • Occupy the centre with pawns on e5 and d5.
  • Develop the pieces and defend e5 without weakening anything.
  • Use the extra time while White builds from a distance.

History

The name joins Aron Nimzowitsch and Bent Larsen. Nimzowitsch often played b3 after 1.Nf3, while Larsen took up 1.b3 from 1968.