It is the standard 'smothered mate' which has been published a 1000 times on this site. The first move is to move the white queen 2 squares to the left giving check to the black king. If you are a chessplayer you should be able to solve it from here; if not you should be able to google it from here. Good luck!
You must be over thirty. Who still plays Geocache? There is Pokemon Go!
I play geocache and need to solve this chess puzzle:
https://www.geocaching.com/geocache/GC1WF6J_schach-matt
It's white's turn. White should be able to check-mate black in 5 moves. Black plays optimal. The board is smaller than usual, but normal chess rules apply.