ECO C20
Center Game
The position after 1.e4 e5 2.d4.
Center Game
3 half-moves in · 2 named continuations
8♜
♞
♝
♛
♚
♝
♞
♜
7♟
♟
♟
♟
♟
♟
♟
6
5
♟
4
♙
♙
3
2♙
♙
♙
♙
♙
♙
a1♖
b♘
c♗
d♕
e♔
f♗
g♘
h♖
1. e4 e5 2. d4
Center Game is filed under ECO C20. It is the position after 1.e4 e5 2.d4 — 3 half-moves in, with Black to move. From here theory names 2 continuations: d5, exd4.