STUDIES 

Chess Tactical Themes

Home Page

 

DOUBLE ATTACK

Tactical theme that allows a material  gain thanks to a move that attacks two pieces at a time.  The double attack is effective only if the defender can't counterattack in turn an opponent's piece, moving one of the attacked pieces.
Behting 1894 Troitzkij 1912 Kasparjan 1940 Costa 2000

DISCOVERY CHECK

The attack by means of a discovery check is a deadly weapon that allows to gain material, because the defender, busy to stop the check, can't take care of the attacked piece.  
Platov 1929 Gurvic 1955 Kubbel 1927 Kubbel 1925

IMPRISONMENT AND DOMINATION

The imprisonment is a manoeuvre that allows to cage an enemy piece in order to capture it or to make it harmless. The domination is a  similar theme and concerns the absolute control of the movement of an opponent's piece in order to achieve the capture of that piece. 
Kovalenko 1936 Guljaev 1940 Zachodjachin 1932 Troitzkij 1914

ENFILADE

When an opponent's piece is positioned on the same line occupied by the opponent's King, it is possible to gain a material advantage by means of the  enfilade: you deliver check to the King along such line in order to capture the piece placed  behind him once the King has moved.
Liburkin 1940 Guljaev1926 Troitzkij 1895 Bautin 1926

ZUGZWANG

Zugzwang is a German compound word (literally forced move) that, in chess, indicates the disadvantage associated with the obligation to move: the zugzwang occurs when a player, that must move, has at his disposal only moves that make his position worse thus causing the defeat (or preventing the victory).
Liburkin 1947 Herbstman 1927 Gorgiev 1930 Troitzkij 1924