[Retros] ep in fairy helpmate

[Valery Liskovets]

Dear retro-friends,

Let me call your attention to a kind of fairy retro (implicit)
in the following problem that has just won the 3d place (preliminary)
in the Liga Problemista 1/2008 tourney of Mat Plus (Mat Plus No.29
 http://www.matplus.net/pub/zip/MP29.pdf ):

P.Pitton, 8/8/1p6/B7/kPp5/s1p5/2sp4/1S1K4 (4+7) h#2; b)-wKd1
 1.Sa1 Ke2 2.Sb3 Sxc3#.
 1.cxb3 ep Bxb6 2.Sb4 Sxc3#.  (!?)

Theme: h#2 twinned by removal of wK.

Valery Liskovets