Why Andernach? :)

 

PG 3.5 Andernach*, Breton Adverse**, Extinction***

* Andernach chess is a chess variant in which a piece making a capture (except kings) changes colour. 

** When a piece is captured, another piece of same nature belonging to captured side (if any) must also disappear.

*** A side is in check if it is threatened to no more have a kind of piece it owned in the diagram position. Promotions to King are allowed.

Sol. 1.e3 Sc6 2.Bb5+ Se5 3.Qh5+ g5 4.f4#