A particularly baffling problem that is said to have a correct solution:
— He loved to solve chessmate puzzles.
— That's a real puzzler.

synonyms: mystifier, puzzler, teaser.

Roget 533: secret; dead secret, profound secret; arcanum^†, mystery; latency etc. 526; Asian mystery^†; sealed book, secrets of the prison house; le desous des cartes [Fr.].    enigma, riddle, puzzle, nut to crack, conundrum, charade, rebus, logogriph^†; monogram, anagram; Sphinx; crux criticorum [Lat.].    maze, labyrinth, Hyrcynian wood; intricacy, meander.    problem etc. (question) 461; paradox etc. (difficulty) 704; unintelligibility etc. 519; terra incognita etc. (ignorance) 491.    ... show more

Roget 519: unintelligibility; incomprehensibility, imperspicuity^†; inconceivableness, vagueness etc. adj.; obscurity; ambiguity etc. 520; doubtful meaning; uncertainty etc. 475; perplexity etc. (confusion) 59; spinosity^†; obscurum per obscurius [Lat.]; mystification etc. (concealment) 528; latency etc. 526; transcendentalism.    paradox, oxymoron; riddle, enigma, puzzle etc. (secret) 533; diagnus vindice nodus [Lat.]; sealed book; steganography^†, freemasonry.    pons asinorum [Lat.], asses' bridge; high Dutch, Greek, Hebrew; jargon etc. (unmeaning) 517.    ... show more

Roget 704: difficulty; hardness etc. adj.; impracticability etc. (impossibility) 471; tough work, hard work, uphill work; hard task, Herculean task, Augean task^†; task of Sisyphus, Sisyphean labor, tough job, teaser, rasper^†, dead lift.    dilemma, embarrassment; deadlock; perplexity etc. (uncertainty) 475; intricacy; entanglement, complexity etc. 59; cross fire; awkwardness, delicacy, ticklish card to play, knot, Gordian knot, dignus vindice nodus [Lat.], net, meshes, maze; coil etc. (convolution) 248; crooked path; involvement.    nice point, delicate point, subtle point, knotty point; vexed question, vexata quaestio [Lat.], poser; puzzle etc. (riddle) 533; paradox; hard nut to crack, nut to crack; bone to pick, crux, pons asinorum [Lat.], where the shoe pinches.    nonplus, quandary, strait, pass, pinch, pretty pass, stress, brunt; critical situation, crisis; trial, rub, emergency, exigency, scramble.    scrape, hobble, slough, quagmire, hot water, hornet's nest; sea of troubles, peck of troubles; pretty kettle of fish; pickle, stew, imbroglio, mess, ado; false position.    set fast, stand, standstill; deadlock, dead set.    fix, horns of a dilemma, cul de sac [Fr.]; hitch; stumbling block etc. (hindrance) 706.    [difficult person] crab; curmudgeon.    ... show more

Polish: łamigłówka

A game that tests your ingenuity.

Dutch: raadsel, puzzel
Polish: łamigłówka

Be a mystery or bewildering to.

synonyms: amaze, baffle, beat, bewilder, dumbfound, flummox, get, gravel, mystify, nonplus, perplex, pose, stick, stupefy, vex ... show more.

Roget 528: conceal, hide, secrete, put out of sight; lock up, seal up, bottle up.    encrypt, encode, cipher.    cover, screen, cloak, veil, shroud; cover up one's tracks; screen from sight, screen from observation; drawing the veil; draw the curtain, close the curtain; curtain, shade, eclipse, throw a view over; be cloud, be mask; mask, disguise; ensconce, muffle, smother; befog; whisper.    keep from; keep back, keep to oneself; keep snug, keep close, keep secret, keep dark; bury; sink, suppress; keep from, keep from out of view, keep from out of sight; keep in the shade, throw into the shade, throw into background; stifle, hush up, smother, withhold, reserve; fence with a question; ignore etc. 460.    keep a secret, keep one's own counsel; hold one's tongue etc. (silence) 585; make no sign, not let it go further; not breathe a word, not breathe a syllable about; not let the right hand know what the left is not let the right hand know what the left is doing; hide one's light under a bushel, bury one's talent in a napkin.    keep in the dark, leave in the dark, keep in the ignorance; blind, blind the eyes; blindfold, hoodwink, mystify; puzzle etc. (render uncertain) 475; bamboozle etc. (deceive) 545.    be concealed etc. v.; suffer an eclipse; retire from sight, couch; hide oneself; lie hid, lie in perdu [Fr.], lie in close; lie in ambush (ambush) 530; seclude oneself etc. 893; lurk, sneak, skulk, slink, prowl; steal into, steal out of, steal by, steal along; play at bopeep^†, play at hide and seek; hide in holes and corners; still hunt.    ... show more

Roget 475: be uncertain etc. adj.; wonder whether.    lose the clue, lose the clew, scent; miss one's way.    not know what to make of etc. (unintelligibility) 519, not know which way to turn, not know whether one stands on one s head or one's not know whether one stands on one s head or one's heels; float in a sea of doubt, hesitate, flounder; lose oneself, lose one's head; muddle one's brains.    render uncertain etc. adj.; put out, pose, puzzle, perplex, embarrass; confuse, confound; bewilder, bother, molder, addle the wits, throw off the scent, ambiguas in vulgus spargere voces [Lat.]; keep in suspense.    doubt etc. (disbelieve) 485; hang in the balance, tremble in the balance; depend.    ... show more

Dutch: verbluffen, verlegenheid, verstomd doen staan

Be uncertain about; think about without fully understanding or being able to decide.