"Hlavolamy." . . "Jeux intellectuels." . . "Kritické myšlení" . . . . "Puzzles." . . . . . . . . "Handbooks, manuals, etc" . . . . "Critical thinking puzzles"@en . "Critical thinking puzzles" . "Challenging critical thinking puzzles" . . . "A collection of puzzles and mind games."@en . . . . . . . . "Příručky" . "A collection of puzzles, challenges, riddles, and brainteasers designed to test mental powers and improve critical thinking." . . "Hlavolamy pro rozvoj kritického myšlení" . "Critical thinking." . . "Pensée critique." . .