Tag: theme

Repetition in different variations of an identical mate (or stalemate) pattern, but shifted, reflected or rotated on a chessboard. The term may have a broader meaning including an identical maneuver, idea, combination, etc.

Chameleon echo – an echo in which a mated king stands on the square of the opposite color.

Tura, Waldemar
E. Iwanow-75
Rozmaitosci Szachowe 2008
1st-2nd Prize

helpmate in 3 moves
b) Nf8->g5

There are two rooks between two bishops in the diagram. The play allows all four possible Grimshaw interference pairs.

Van Dijk, Nils
Schakend Nederland 1963
4th Prize

mate in 2 moves

Black promotion defences to all possible pieces are answered by the same white promotions.

Kramer, Wilhelm
Babson Task Tourney 1929
1st Prize

selfmate in 3 moves

A move of a piece passing the critical square to prevent it from being interfered in that square.

Thoren, Karl
Schackvärlden, 1929
Prize

mate in 3 moves

An interference of a line-piece by a like-motion piece of the same color. The complete form assumes
interference after a critical move of the interfered piece.

Langstaff, William
The Good Companion Chess Problem Club 1924
2nd Prize

mate in 2 moves

Mutual (reciprocal) interference between pieces of like motion standing on different lines. Note that the Queen and Bishop can be considered like-moving pieces when the Queen has only a diagonal thematic purpose.

Wurzburg, Otto
The Gazette Times 1916

mate in 3 moves