On Lichess, across N = 298,322 games between players rated 900 to 1700 (September 2026 data), you score 52% as White with the Nimzo-Larsen Attack, 1.b3. The b3 pawn clears b2 for the bishop, which eyes d4 and e5 along the long diagonal from there. Against 1…e5, the reply of 4 in 10 opponents, that bishop is already hitting the pawn on move two.
Lichess games from September 2026 (30,577,162 rated 900 to 1700) and 31,791 over-the-board games rated 2300+ from the last 12 months. Data updated: October 14, 2026.
At a glance
Moves
1.b3
ECO
A01
Amateur games
298,322
Of all games rated 900 to 1700
1.0%
White's score
Lichess 900–1700: 52.0% · Online, 2200+: 52.6% · Over the board, 2300+: 63.0%
Evaluation after 1.b3
−0.06
13 named lines in this family; 1 with their own page.
By rating
The opening's share in each Lichess rating band.
0.7%900–1100
0.8%1100–1300
1.0%1300–1500
1.1%1500–1700
What amateurs play and what strong players play
After 1.b3, 4 in 10 opponents at your level play 1…e5, and 1 in 4 go for 1…d5. Among online players rated 2200+ the choice is more spread out: 1…e5 drops to 27 in 100 games and 1…f6 climbs to 20 in 100, against 7 in 100 at your level. Against 1…e5, 2.b2 is standard in both groups, in 9 games out of 10, and 2…c6 is the usual defense, in 61 of every 100 games at your level. The split comes on move three. After 2…c6, players at your level choose 3.e3 in 45 of every 100 games and 3.g3 in 20. Strong players pick 3.e3 70 times in 100, and their second choice is 3.c4, at 14.
After 1.b3 · N = 288,038
Move
Lichess 900–1700
White's score
Online, 2200+
Over the board, 2300+
e5
39.4%
51.6%
27.1%
33.7%
d5
25.8%
51.5%
24.3%
40.8%
e6
7.0%
53.4%
3.5%
no data
f6
6.8%
50.4%
20.4%
25.5%
c5
4.3%
51.4%
6.7%
no data
g6
3.5%
54.8%
no data
no data
b6
no data
no data
3.5%
no data
After 1.b3e5 · N = 113,220
Move
Lichess 900–1700
White's score
Online, 2200+
Over the board, 2300+
b2
90.6%
52.0%
94.3%
100.0%
g3
1.9%
49.6%
0.1%
no data
e3
1.5%
51.5%
3.3%
no data
a3
1.3%
47.0%
no data
no data
e4
1.2%
46.2%
0.2%
no data
c4
0.7%
46.1%
1.8%
no data
a3
no data
no data
0.1%
no data
After 1.b3e52.b2 · N = 102,446
Move
Lichess 900–1700
White's score
Online, 2200+
Over the board, 2300+
c6
60.7%
51.4%
73.9%
81.8%
d6
17.1%
51.1%
20.8%
18.2%
f6
5.0%
53.0%
2.8%
no data
d5
3.8%
54.2%
0.7%
no data
e4
3.3%
52.3%
1.1%
no data
f6
2.8%
53.4%
no data
no data
d6
no data
no data
0.3%
no data
After 1.b3e52.b2c6 · N = 63,634
Move
Lichess 900–1700
White's score
Online, 2200+
Over the board, 2300+
e3
44.7%
53.8%
70.4%
69.6%
g3
20.0%
49.7%
3.9%
no data
f3
11.5%
51.9%
8.5%
no data
d3
6.2%
49.8%
0.8%
no data
e4
6.0%
47.3%
1.3%
no data
c3
3.6%
47.2%
no data
no data
c4
no data
no data
13.6%
30.4%
After 1.b3e52.b2c63.e3 · N = 33,174
Move
Lichess 900–1700
White's score
Online, 2200+
Over the board, 2300+
d5
46.3%
54.9%
35.1%
100.0%
f6
21.3%
51.8%
34.9%
no data
c5
11.7%
53.4%
no data
no data
d6
7.0%
52.4%
5.1%
no data
a6
3.4%
50.1%
10.1%
no data
b4
2.6%
53.1%
no data
no data
g6
no data
no data
6.8%
no data
f5
no data
no data
1.9%
no data
The plan, from masters' games
The line strong players repeat most is 1.b31…e52.b22…c63.e33…d54.b54…d65.f4. It all revolves around Black's e5 pawn. Your b2 bishop hits it from the long diagonal, Black defends it, and you take away a defender and add an attacker. You end up with pawns on b3, e3 and f4 facing Black's pawns on d5 and e5.
2.b2 attacks e5 as soon as the pawn lands there, which is why 2…c6 guards it in 74 of every 100 strong games. 3.e3 does two jobs. It covers d4, a square the c6 knight is also eyeing, so the c6 knight can't jump there without being taken by the pawn or the bishop. And it opens the f1 bishop's diagonal toward b5. It has to come before the bishop move: while the pawn still sits on e2, that bishop has no way out.
3…d5 grabs the center but empties d7. That opens the diagonal from b5 to e8, and 4.b5, chosen by 87 of every 100 strong players, pins the c6 knight to the king. The knight still stands next to e5, but it can no longer capture there, so the pawn has no real defender. That's why Black covers it with 4…d6. If needed, your b5 bishop can also take that knight and strip e5 of its defender for good. Then 5.f4 brings a second attacker onto e5, this time a pawn. In that position strong players go 5.f4 in 67 of every 100 games; at your level, in 26.
The f1 bishop doesn't always head for b5. Among online players rated 2200+, it ends up on g2 in 23 of every 100 games, on e2 in 22 and on b5 in 20. Over the board, among players rated 2300+, g2 rises to 49 in 100 and b5 drops to 11. That's the fianchetto: knight to f3, pawn to g3 and bishop to g2, so both your bishops sit on the two long diagonals. Against 1…d5, move order matters. Knight first, since it watches e5. Push the g-pawn first with Black's knight on c6, and Black can plant a pawn on e5 that cuts off your b2 bishop.
White's kingside fianchetto
Plan played in 49% of the 276 over-the-board games rated 2300+ with this structure.
23 in 100 choose it online.See dataHide
Online, 2200+: 23.2% of 24,562. Over the board, 2300+: 49.3% of 276; the alternative, e2: 22.5% and 12.7%; the alternative, d3: 9.9% and 4.3%; the alternative, c4: 1.8% and 2.9%; the alternative, b5: 20.0% and 10.9%.
The strong players' line
The most repeated move in games rated 2200+ online and 2300+ over the board, while at least 20 games play it
Move
Strong games
Chosen by
1…e5
21,883
27.1%
2.b2
5,924
94.3%
2…c6
5,570
74.0%
3.e3
4,236
70.4%
3…d5
3,032
35.3%
4.b5
1,226
87.4%
4…d6
1,033
61.6%
5.f4
603
66.7%
The mistakes that cost the most games
g3Inaccuracy
After 1.b31…d52.b22…c6, 3.g3 is an inaccuracy chosen by 23 of every 100 players at your level. It allows 3…e5: the pawn, backed by the c6 knight, blocks your bishop's diagonal. After 3.f3, that push would drop the pawn to the knight and bishop. You score 54 of every 100 points with 3.f3 and 50 with 3.g3.
23 in 100 play it in this position. It gives away 0.9 pawns of advantage. It scores 49.8%; f3 scores 54.4%.
h5Mistake
After 1.b31…e52.e32…d5, 3.h5 is a mistake. The queen hits e5 and f7, but 3…d6 protects the pawn and the king covers f7. Your queen is exposed: after 4.b24…e75.f35…d7, it moves again with 6.g4. Opponents at your level often don't punish it: you score 57 of every 100 points with it, 53 with 3.b2.
8 in 100 play it in this position. It gives away 1.2 pawns of advantage. It scores 57.1%; b2 scores 52.6%.
e3Mistake
Against 1.b31…e52.b22…d5, the e5 pawn is left hanging, and 3.xe5 wins it because no black piece can recapture. 3.e3 lets the chance slip and is a mistake: after 3…d6 the pawn is protected and your bishop runs into it. You score 58 of every 100 points with 3.xe5 and 53 with 3.e3.
24 in 100 play it in this position. It gives away 1.1 pawns of advantage. It scores 53.3%; xe5 scores 58.5%.
g3Mistake
In that same position, 3.g3 is an even bigger mistake than 3.e3: you prepare the fianchetto and leave the loose e5 pawn alone. Black covers it with 3…c6, and after 4.d34…c5 the black bishop eyes f2. 15 of every 100 players at your level choose it; you score 52 of every 100 points with it and 58 with 3.xe5.
15 in 100 play it in this position. It gives away 1.5 pawns of advantage. It scores 52.1%; xe5 scores 58.5%.
c3Inaccuracy
After 1.b31…e52.b22…c6, 3.c3 is an inaccuracy: the knight lands on your bishop's diagonal and cuts it off from e5. Black takes the center with 3…d5, and after 4.e34…f65.d45…exd46.exd4 your bishop is shut in behind the knight and the d4 pawn. You score 54 of every 100 points with 3.e3 and 47 with 3.c3.
4 in 100 play it in this position. It gives away 0.7 pawns of advantage. It scores 47.2%; e3 scores 53.8%.
g3Mistake
If you meet 1…d5 with 2.b2 and Black replies 2…d4, that pawn blocks your bishop's diagonal. 3.f3 attacks it a second time; 3.g3 ignores it and is a mistake. After 3…c54.e34…e5, two pawns hold it up. At your level it barely costs you: you score 53 of every 100 points with 3.g3 and 54 with 3.f3.
17 in 100 play it in this position. It gives away 1.1 pawns of advantage. It scores 52.7%; f3 scores 54.0%.
How players castle
Lichess 900–1700 · the 6 most frequent combinations
White
Black
Games
O-O
O-O
102,762
Not castled
O-O
39,632
Not castled
Not castled
38,565
O-O-O
O-O
29,337
O-O
Not castled
26,045
O-O
O-O-O
25,584
Over the board, 2300+ · the 6 most frequent combinations
White
Black
Games
O-O
O-O
203
O-O
O-O-O
17
Not castled
O-O
12
O-O-O
O-O-O
10
O-O
Not castled
10
Not castled
O-O-O
8
Variations
Modern Variation
1.b3e5 · 119,140 amateur games · 34 over the board
1…e5 is the most common reply, with 119,140 games; 2.b2 goes after that pawn straight away.
Classical Variation
1.b3d5 · 79,475 amateur games · 209 over the board
1…d5 takes the center without giving your bishop a target; strong over-the-board players prefer it.
Indian Variation
1.b3f6 · 18,853 amateur games · 24 over the board
1…f6 watches e4 and d5; 20 in 100 players rated 2200+ choose it, against 7 at your level.
English Variation
1.b3c5 · 12,148 amateur games · 3 over the board
1…c5 eyes d4 from the queenside; you score 51 of every 100 points across 12,148 games.
Symmetrical Variation
1.b3b6 · 7,319 amateur games · 2 over the board
1…b6 mirrors your move and frees b7 for Black's bishop; 7,319 games at your level.