1.Rd6 ! threat: 2.Se6 + ! fe 3.R:c5 # / 3.B:d8 #

1...R:g5 2.Bf2 ! threat: 3.Bb6 # 2...Rc5 3.R:c5 #

1...B:g5 2.Rh8 ! threat: 3.Rc8 # 2...Bd8 3.B:d8 #

Nabokov theme, meredith.

This is a lighter version of my own problem https://www.yacpdb.org/#575075. If the judge decides that this is not original enough, he is welcome to exclude it from the competition.