Feldmann 1 theme

Reciprocal mates (or continuations) after two random and correction move pairs in a single phase. Thematic pairs of variations may be made by two different units, or by a single line-mover along two different lines.
It is otherwise known as the reciprocal black correction theme.

cyclic Feldmann 1 theme

Cyclic mates ( or continuations) after random and correction moves of three black units in a single phase.

white Feldmann 1 theme

Reciprocal refutations after random and correction moves of two white pieces.

cyclic white Feldmann 1 theme

Cyclic refutations after random and correction moves of three (or more) white pieces.

Szwedowski, Leopold
The Problemist, 1970-71
FIDE Album 1971-73
3rd Prize

mate in 2 moves
b) Ba8->a2

FEN: B2B2q1/b2p4/1p2n1R1/Npkp1N1Q/4n2R/P1p1p3/8/K6b