Pieces, not pawns, are the ones that take the open squares. The move order is kept loose so several set-ups stay available. Of the four central squares, pawns stand on e4 · e5. Nothing has been captured yet. Neither side has castled yet.
The position
Length
3 moves
To move
Black
Legal replies
29
Minor pieces out
White 1 · Black 0
Material
level
Castling rights left
KQkq
FEN
rnbqkbnr/pppp1ppp/8/4p3/2B1P3/8/PPPP1PPP/RNBQK1NR b KQkq - 1 2
Move by move
Each move spelled out: which piece went from where to where.