Editing Glossary of chess problems (section)

== T ==
{{glossary}}

{{term|term= task |content = task {{anchor|Task|tasks}} }}
{{defn|defn= Chess problem or study with a record content or with highly unusual, bizarre [[#theme|theme]], e.g., [[#Babson task|Babson task]] or Valladao task.}}

{{term|term= theme |content = theme {{anchor|Theme|themes}} }}
{{defn|defn= The underlying idea of a problem, which gives it logic, coherence and beauty.}}

{{term|term= threat |content = threat {{anchor|Threat|threats}} }}
{{defn|defn= A move or variation that White plays (usually following their [[#key|key]]) if Black does nothing to defend against it. Problems with no threats following the key are [[#block|blocks]].}}

{{term|term= three-mover |content = three-mover {{anchor|Three-mover|three-movers}} }}
{{defn|defn= A problem with the stipulation "White to move and checkmate Black in no more than three moves against any defence". In composition tourneys, there are often separate classes for three-movers, [[#two-mover|two-movers]] and [[#more-mover|more-movers]] (as well as classes for [[#helpmate|helpmates]], [[#selfmate|selfmates]] and others).}}

{{term|term= try |content = try {{anchor|Try|tries}} }}
{{defn|defn= A move that almost solves a problem, but is defeated by a single Black defence, as opposed to the [[#key|key]] (which actually does solve the problem). Variations after tries are called ''[[#virtual play|virtual plays]]'' and may be an important part of what makes some problems pleasing.}}

{{term|term= Turton doubling |content = [[Turton doubling]] {{anchor|Turton doubling}} }}
{{defn|defn= A kind of [[#doubling|doubling]] in which one piece moves along a line allowing a second to move onto the same line in front of it; this second piece then moves in the opposite direction to the first. Named after [[Henry Turton]]. Cf. ''[[#Zepler doubling|Zepler doubling]]''.}}

{{term|term= twin |content = twin {{anchor|Twin|twins}} }}
{{defn|defn= Two or more problems that are slight variations on each other, often composed by the same person. The variation is usually brought about by adding, removing or moving a piece in the initial setup.}}

{{term|term= two-mover |content = two-mover {{anchor|Two-mover|two-movers}} }}
{{defn|defn= A problem with the stipulation "White to move and checkmate Black in two moves against any defence". In composition tourneys, there are often separate classes for two-movers, [[#three-mover|three-movers]] and [[#more-mover|more-movers]] (as well as classes for [[#helpmate|helpmates]], [[#selfmate|selfmates]] and others).}}

{{glossary end}}