ECO A00
Anderssen's Opening
The position after 1.a3.
Anderssen's Opening
1 half-moves in · no named continuation
8♜
♞
♝
♛
♚
♝
♞
♜
7♟
♟
♟
♟
♟
♟
♟
♟
6
5
4
3♙
2
♙
♙
♙
♙
♙
♙
♙
a1♖
b♘
c♗
d♕
e♔
f♗
g♘
h♖
1. a3
Anderssen's Opening is filed under ECO A00. It is the position after 1.a3 — 1 half-moves in, with Black to move. Named theory ends here; beyond this the position is yours to work out.