One pawn is given up to bring the pieces out faster. Both kings come under fire early, so one slip decides it. Of the four central squares, pawns stand on e4. 1 pieces have left the board. White has castled.
The position
Length
9 moves
To move
Black
Legal replies
31
Minor pieces out
White 2 · Black 0
Material
38 · 39
Castling rights left
kq
FEN
rnbqkbnr/pppp1p1p/8/8/2B1Ppp1/5N2/PPPP2PP/RNBQ1RK1 b kq - 1 5
Move by move
Each move spelled out: which piece went from where to where.