Lev Loschinski, Two-mover, Black Arrival Correction

Lev Loschinski was a master of composition. His name is pre-eminent like Comins Mansfield for the two-mover. However, he was equally great in the three-mover, in the modern as well as the strategic, discovered various new artisitic touches such as the Loschinski "magnet". Here, we see a elegant and spare setting for a two-mover featuring 'arrival correction', a term connoting the mechanism for separating the white mates, as explained below.

After the key (click on the 1.?), a random Black piece needs to arrive on d4 to prevent the threat (>2.Qxa7). However arrival of a powerless Black piece allows 2.Qxe2 mate. However, since the Black piece that arrives has powers to move and is not just a square-occupier, new mates are required and enforced thus:

1...d4 2,Qxe2? d3!! Therefore 2.Bc4# (Black pawn has interfered with the fourth rank)

1...fSd4 2,Qxe2 Sxe2 Therefore 2.Ra3# (Black line-opening third rank, valve closing 4th)

1...eSd4 2,Qxe2?? Therefore 2.Qa2# (Black line-opening third rank, valve closing 4th)

1...Bd4 Therefore 2.Qxe2# (Black bishop has interfered with the fourth rank)

1...Rd4 (Completing the Grimshaw (defintion: Two variations in which Bishop and Rook interfere with the other on the same square)) 2.Qxe2? Rc4, Therefore Rh6#(Black rook has vacated the h file (line-clearance) while BB's control of h6 has been interfered with, this is Grimshaw)