Solo chess challenge not possible

So this is in the "solo chess" challenge. You have to capture a piece with every move. No piece can capture more than two times, and the king has to be the last one left on the board. This challenge is not possible, since the knight in the corner can't capture anything on the board, and by the end of it, the king can't move across the empty space to grab it. Or is there something I'm missing? There's no sneaky castling move available or anything like that.

Bxa1, Bxa4, Rxe4, Rexa4, Rxa1, Rxa4, Kxa4

Or a similar set of moves.

edit, ah sorry, I see now! The rook is needed to take and come back. Thanks!

 Can anyone solve this solo chess challenge

Looks like it could be bugged and has pieces from a previous position on the board. Did you try refreshing?

I refreshed the board, but not the page, I'm afraid that the challenge will disappear, cuz I'm solving this haha