brain teaser
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Connections
Greece
Country
Archimedes
Entity
mind
Entity
International Standard Book Number
Entity
mathematician
Entity
riddle
Entity
digital object identifier
Entity
paradox
Entity
sudoku
Entity
board game
Entity
intuition
Entity
crossword
Entity
syllogism
Entity
puzzle
Entity
optical illusion
Entity
problem solving
Entity
Mensa International
Entity
dilemma
Entity
Monty Hall problem
Entity
maze
Entity