Nowotny interference

An interference between line-pieces of unlike-motion and of the same color, forced by a sacrifice on the critical (interference) square.

English Nowotny

A Nowotny interference where one of the thematic pieces is a pinned black Queen.

Azerbaijan Nowotny

Combination of Finnish and Romanian Nowotny.

Finnish Nowotny

In the initial position there is a black piece B on the intersection square of black Rook and Bishop
lines. A thematic try by white piece W introduces a double threat which is defeated by removal of
the black piece B which opens both black lines. White piece W corrects by capturing the black piece B, after which follows the normal Nowotny interference play.

Latvian Nowotny

In the initial position there is a white piece W on the cutting point. The key, made by another white piece, triggers the double threat and takes advantage of both interferences.

Romanian Nowotny

A Nowotny interference key threatens two mates due to the interference. Captures at the cutting point refute both threats but introduce new mates that take advantage of the interference.

Szwedowski, Leopold
Probleemblad 1959
2nd Prize
FIDE Album 1959-61

mate in 2 moves