puzzler

from WordNet (r) 3.0 (2006)

puzzler
    n 1: a particularly baffling problem that is said to have a
         correct solution; "he loved to solve chessmate puzzles";
         "that's a real puzzler" [syn: {puzzle}, {puzzler},
         {mystifier}, {teaser}]

from The Collaborative International Dictionary of English v.0.48

Puzzler \Puz"zler\, n.
   One who, or that which, puzzles or perplexes.
   [1913 Webster]

         Hebrew, the general puzzler of old heads. --Brome.
   [1913 Webster]

from Moby Thesaurus II by Grady Ward, 1.0

28 Moby Thesaurus words for "puzzler":
      Chinese puzzle, baffling problem, brain twister, crossword puzzle,
      crux, enigma, enigmatic question, floorer, jigsaw puzzle, knot,
      knotty point, mind-boggler, mystery, nut to crack,
      perplexed question, perplexity, poser, problem, puzzle, puzzlement,
      question, question mark, sixty-four dollar question, sticker,
      stumper, tough proposition, vexed question, why

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