ECO A00
Polish Opening, with d5
The position after 1.b4 d5.
Polish Opening, with d5
2 half-moves in · 1 named continuation
8♜
♞
♝
♛
♚
♝
♞
♜
7♟
♟
♟
♟
♟
♟
♟
6
5
♟
4
♙
3
2♙
♙
♙
♙
♙
♙
♙
a1♖
b♘
c♗
d♕
e♔
f♗
g♘
h♖
1. b4 d5
Polish Opening, with d5 is filed under ECO A00, a variation of Polish Opening. It is the position after 1.b4 d5 — 2 half-moves in, with White to move. From here theory names one continuation, Nf3.