ECO A22 · English Opening
English Opening: Carls-Bremen System
The position after 1.c4 e5 2.Nc3 Nf6 3.g3.
English Opening: Carls-Bremen System
5 half-moves in · 4 named continuations
8♜
♞
♝
♛
♚
♝
♜
7♟
♟
♟
♟
♟
♟
♟
6
♞
5
♟
4
♙
3
♘
♙
2♙
♙
♙
♙
♙
♙
a1♖
b
c♗
d♕
e♔
f♗
g♘
h♖
1. c4 e5 2. Nc3 Nf6 3. g3
English Opening: Carls-Bremen System is filed under ECO A22, a variation of English Opening. It is the position after 1.c4 e5 2.Nc3 Nf6 3.g3 — 5 half-moves in, with Black to move. From here theory names 4 continuations: Bb4, d5, c6, g6.