This is an archived problem from a previous year. Submissions are closed, but you can view the problem and its solution.

Welcome to another year of Advent of Chess!

Starting from the initial position, give a sequence of moves that reaches this position in exactly 4 moves (4 moves for White and 4 moves for Black).

Write the answer using *algebraic chess notation*. See the paragraph on *Chess Notation* on the About page if you don't know how to write chess moves.