2 文書を見つけるための辞書。

• teaser, puzzler, mystifier, puzzle
• 難問, 試情牡, パズル
• a particularly baffling problem that is said to have a correct solution; "he loved to solve chessmate puzzles"; "that's a real puzzler"
• 正解を持つとされる特に難しい問題

• brain-teaser, riddle, conundrum, enigma
• 謎, 難問, エニグマ
• a difficult problem
• 難しい問題