Nimzo-Larsen Attack

1. b3

Nimzo-Larsen Attack after 1. b3 87654321abcdefgh

The Nimzo-Larsen Attack is a chess opening classified as ECO A01, reached after 1. b3. Black is to move. 7 named lines continue from this position.

In 12.6 million rated Lichess games (blitz and slower), this position was reached 128,385 times by this move order. White won 50%, 4% were drawn and Black won 46%. The most popular continuation is 1… e5 (34% of games).

Engine evaluation: 0.00 (Stockfish, depth 55; best line 1… e5 2. Bb2 Nc6 3. e3 a6 4. c4)

ECO
A01
Moves
1 plies
FEN
rnbqkbnr/pppppppp/8/8/8/1P6/P1PPPPPP/RNBQKBNR b KQkq - 0 1
PGN
1. b3

Analyse with Stockfish · Board image (SVG) · Open on Lichess

Results by rating

Average ratingGamesWhite / draw / Black
0-149943,75750%46%
1500-199965,97850%46%
2000+18,65050%44%
All128,38550%46%

Most played moves

MoveGamesWhite / draw / Black
1… e5
Modern Variation (1. b3 e5)
43,362 (34%)50%46%
1… d5
Classical Variation (1. b3 d5)
33,808 (26%)49%46%
1… Nf6
Indian Variation
13,107 (10%)48%47%
1… e68,495 (7%)51%45%
1… c5
English Variation
6,846 (5%)49%47%
1… c64,586 (4%)51%45%
1… g64,452 (3%)52%44%
1… d63,969 (3%)50%46%

Master games

3,242 over-the-board games are classified under this line (White 50%, draw 13%, Black 37%). The strongest:

Search all games of the Nimzo-Larsen Attack and its sub-variations

Highest-rated Lichess games

Continuations

More Nimzo-Larsen Attack lines (all)

Opening names and moves from the Lichess openings dataset; statistics from the Lichess open database, 2026-09 (CC0), sample of 12.6 million games, bots excluded; evaluations from Lichess cloud analysis (all CC0). Master games from The Week in Chess #920–#1664 by Mark Crowther, used with permission.