(27.07.2013) An elegant and super original problem by Zivko Janevski from Macedonia!

1.Sd3 Bd6+ 2.Ke4 Re5#

1.Sf3 Bxd4+ 2.Kf4 Be5#

1.e6 Be7+ 2.c5 Rxc5#

1.Kd5 Rf4 2.e5 Ba2#

      A diagonal/orthogonal setting of two pairs of thematically connected solutions and two pairs of white R/B mechanisms.

I. pair – black anticipatory self, mates on BK’s initial square and pin-mates. Reciprocal changed functions of two pairs of white pieces: Ra5/Bc5 and Ba1/Rf1. 

II. pair – black self-block by BPe7 one-two play and reciprocal changed functions of the white mechanisms: white battery (Ra5/Bc5) and white pinning pieces (Ba1/Rf1).

(Author)