Crossword Clues for ENIGMA

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Clue Source Date
Riddle The Telegraph Quick 02 Jul 2025
Series ot'Variations' composed by Elgar (6)
Puzzle moved in game (6)
Bletchley Park cipher machine (6)
Imagine one leaves what could turn out to be a puzzle (6)
Puzzle in game's complicated
Riddle The Telegraph Quick 12 Jun 2025
Riddle The Sun Two Speed 07 Jun 2025
Riddle good in mysterious anime The Sun Two Speed 07 Jun 2025
Mystery Puzzler Backwords 31 May 2025
Unsolvable mystery Commuter 30 May 2025
Puzzle that's complicated in game The Times Quick Cryptic 28 May 2025
In game that's thrown it is a puzzling thing (6)
Riddle, statement with hidden meaning (6)
Challenging riddle LA Times Daily 20 May 2025
Cracking the code to which cipher machine compromised every German spy in Britain during WWII? (6)
Michael Apted film starring Dougray Scott and Kate Winslet (6)
An explosive return harbouring good riddle (6)
German World War II code
Tough nut to crack TV 11 May 2025
Puzzle Thomas Joseph 10 May 2025
Wartime encryption machine The Times Concise 08 May 2025
Imagine missing out on one convoluted puzzle (6)
Why leave Hemingway out of puzzle? (6)
"The inner machinations of my mind are an ___" (Patrick Star quote)
Puzzle about a gamine (6)
Elgar Variations (6)
Removing outer parts, imagines confusing puzzle (6)
Conundrum The Sun Two Speed 16 Apr 2025
Puzzle in game to be solved The Sun Two Speed 16 Apr 2025
Puzzle Eugene Sheffer 09 Apr 2025
Central letters hidden in magazine's cryptic puzzle (6)
Puzzle or mystery (6)
Person, thing or situation that is mysterious, puzzling/ambiguous (6)
Disturbance in game - this may take some solving (6)
Conundrum The Telegraph Quick 15 Mar 2025
Mind-boggler USA Today 12 Mar 2025
Ecstasy and booze upset mother - it's a complex problem The Times Cryptic 10 Mar 2025
Mystery, conundrum Mirror Tea Time 10 Mar 2025
Imagine not being able to start cryptic puzzle
Confused in game or puzzle
Riddle Mirror Quick 24 Feb 2025
Puzzle solved in game Mirror Cryptic 24 Feb 2025
Famous variations by Elgar (6) Puzzler 21 Feb 2025
Mysterious person or thing
Game in disarray - this needs some solving (6)
Inscrutable sort Universal 10 Feb 2025
Gem in a newly closed book The Telegraph Toughie 28 Jan 2025
Cipher device used by Nazi Germany for communications, subject of the 2014 film The imitation Game (6)
Mystery(6)
Cipher machine used by the German military during World War II (6)
Lack of order in game a" it may be difficult to solve (6)
Mystery solved in game (6)
Return from a mine containing very little gold. It's a problem (6)
Conundrum, riddle (6)
Cold War thriller (1982) starring Martin Sheen
Mystery The Telegraph Quick 23 Dec 2024
Mystery variations in game play
Imagine one leaving a puzzle such as this (6)
Article Phi's written up about grand puzzle
Mystery USA Today 09 Dec 2024
Mystery magnesia compound lacked arsenic (6)
Conundrum The Sun Two Speed 07 Dec 2024
Playing in game creates mystery The Sun Two Speed 07 Dec 2024
Mystery mage swimming round North Island
Puzzle unravelled in game The Times Quick Cryptic 02 Dec 2024
It wants some solving when there's a change in game (6)
German musical project noted for blending Gregorian chants with dance music (6)
Puzzle, mystery Puzzler Backwords 23 Nov 2024
Imagine I no longer have a riddle (6)
Puzzle Eugene Sheffer 11 Nov 2024
Mystery The Telegraph Quick 05 Nov 2024
Film about Bletchley Park The Telegraph Cross Atlantic 04 Nov 2024
Puzzle out in game (6)
Mystery about gamine (6)
Mystery of monogram GI never included retrospectively (6)
Baffler Newsday 24 Oct 2024
Riddle or puzzle The Telegraph Quick 18 Oct 2024
A riddle(6)
Puzzle in game (6)
Disrupted game in mystery (6)
New game in puzzle (6)
Strange figure good in a venue underground on reflection (6)
There's some sort of game in producing this sort of puzzle
Game to get in even though it puzzles you?
Game in disorder - it's difficult to solve (6)
It's a mystery Newsday 10 Oct 2024
Series of 'Variations' composed by Elgar (6)
Tips from excellent new informer giving Morse answer for mystery The Telegraph Cryptic 07 Oct 2024
Imagine one missing when solving the mystery (6)
Problem in a gem being reset The Times Quick Cryptic 02 Oct 2024
WWII German code cracked at Bletchley Park (6) Puzzler 29 Sep 2024
Lack of order in game ___ it may be difficult to solve (6)
Lack of order in game - it may be difficult to solve (6)
Mystery, conundrum Mirror Tea Time 24 Sep 2024
Game in the form of a puzzle (6)
Mad mystery in a gem
Meaning the North has once gone to work out the puzzle (6)
Ciphering machine
Mystery game in fashion (6)
Conundrum to resolve in game
Tough nut to crack New York Times 22 Aug 2024
Riddle The Telegraph Quick 09 Aug 2024
Cipher machine of W.W. II New York Times 23 Jul 2024
For the G-men, I solved a mystery (6)
No dessert disagreements? Well thats a mystery (6)
Mysterious type played in game (6)
Puzzle resolved in game
Elgar's Variations on an Original Theme, for Orchestra are usually called the '-- Variations" (6)
Variation in game puzzles people
Puzzle Wall Street Journal 08 Jul 2024
Riddle Mirror Tea Time 24 Jun 2024
Strange puzzle made me and Gina even stranger (6)
Unfortunately Gina finds me a bit of a mystery (6)
Imagine dropping one obscure riddle (6) Puzzler Cryptic 17 Jun 2024
Imagine I dropped out of scrambled puzzle (6)
Mystery Premier Sunday 09 Jun 2024
Perplexing person Newsday 31 May 2024
Baffling mystery (6) Puzzler 29 May 2024
German electronic band, songs include Sadeness and Return to Innocence (6)
Mystery about the key I mean to solve (6)
What a puzzle! It has a game in it!
This is quite a problem ___ give me a gin well mixed (6)
Real head-scratcher USA Today 09 May 2024
Mystery Magazine republished, dismissing literary ends (6)
Elgar's variation of gamine (6)
Machine Bletchley cracked (6)
Puzzle set in game (6)
Riddle The Sun Two Speed 01 May 2024
Me drunk with a gin? It's puzzling! The Sun Two Speed 01 May 2024
Code cracked by Alan Turing and others (6)
Imagine I ignored boggling conundrum?
Mysterious element in game is misunderstood (6)
Imagine not having an Independent cryptic puzzle!
Riddle Premier Sunday 31 Mar 2024
Mystery Mirror Classic 27 Mar 2024
Puzzle about the key I mean to solve (6)
Mystery, conundrum Mirror Tea Time 26 Mar 2024
Game to get in and solve it?
Riddle in French initially intriguing key family member The Times Cryptic 19 Mar 2024
Mystery Puzzler Backwords 16 Mar 2024
Puzzle about gamine (6)
WWII codebreakers movie of 2001 starring Dougray Scott and Kate Winslet
Mystery source of growth in a pit in recession The Times Quick Cryptic 24 Feb 2024
Game in form of a puzzle
Game to get in and solve it? (6)
Riddle New York Times 12 Feb 2024
A puzzling thing (6)
Imagine avoiding one tricky puzzle! The Times Quick Cryptic 05 Feb 2024
German WWII code (6)
German code used in World War II Puzzler Backwords 27 Jan 2024
Mystery The Guardian Speedy 21 Jan 2024
Mystery, conundrum Mirror Tea Time 21 Jan 2024
Puzzle Thomas Joseph 23 Dec 2023
Mystery of unruly gamine (6) Puzzler Cryptic 10 Dec 2023
Topsy-turvy game - in a dilemma (6)
Breaking in a new game brought round - puzzle (6)
Something perplexing
Imagine not starting cryptic puzzle! (6)
Total head-scratcher Universal 15 Nov 2023
Baffling riddle (6) Puzzler 06 Nov 2023
A setter's retired to tackle good puzzle The Guardian Cryptic 16 Oct 2023
Name GI in error, creating problem The Times Quick Cryptic 11 Oct 2023
"The Imitation Game" encryption machine LA Times Daily 29 Sep 2023
Puzzle Wall Street Journal 20 Sep 2023
Tough person to understand USA Today 12 Aug 2023
A setter includes trap, going over puzzle The Times Cryptic 03 Aug 2023
Mystery The Guardian Quick 19 Jul 2023
Mystery The Telegraph Quick 19 Jul 2023
Mystery The Times Concise 13 Jul 2023
Imagines content being rewritten to create a mystery The Guardian Cryptic 11 Jul 2023
See 16 The Guardian Weekend 13 May 2023
Mystery sample of cream/gin/elderberry served up The Telegraph Toughie 12 May 2023
Mystery LA Times Daily 09 May 2023
Puzzle Wall Street Journal 06 May 2023
Riddle with complex meaning any number missed The Telegraph Cryptic 21 Apr 2023
Mystery USA Today 14 Feb 2023
Puzzle Thomas Joseph 17 Jan 2023
Tough nut to crack Wall Street Journal 09 Jan 2023
WWII code machine The Telegraph Quick 20 Dec 2022
Mystery Universal 06 Dec 2022
Something puzzling USA Today 01 Dec 2022
Mystery The Guardian Speedy 13 Nov 2022
Mysterious person imagined being lost without identification The Telegraph Toughie 19 Oct 2022
Puzzling person or thing The Times Concise 03 Oct 2022
Riddle that had many variations The Times Cryptic 28 Sep 2022
Puzzle, riddle The Telegraph Quick 12 Sep 2022
Very secretive sort New York Times 07 Sep 2022
Conundrum The Guardian Quick 30 Jul 2022
Challenging puzzle LA Times Daily 15 Jul 2022
A car, one nearly new, overturning? It’s a mystery The Times Cryptic 05 Jul 2022
Head-scratcher LA Times Daily 03 Jul 2022
Challenging puzzle The Washington Post Sunday 12 Jun 2022
“I cannot forecast to you the action of Russia. It is a riddle wrapped in a mystery inside an ____.” (Churchill) The Times Specialist Sunday 12 Jun 2022
Riddle deployed in game The Times Cryptic 09 Jun 2022
Puzzle The Washington Post 08 Jun 2022
Puzzle LA Times Daily 08 Jun 2022
Puzzling thing The Times Concise 19 May 2022
It's baffling The Guardian Quick 17 May 2022
Codebreaker scored with variations? Irish Times Crosaire 06 May 2022
Mystery, puzzle Irish Times Simplex 26 Apr 2022
Trendy bright female, at heart, is a poser The Guardian Cryptic 21 Apr 2022
Trendy bright female, at heart, is a poser
Person or thing that is mysterious
Puzzler Wall Street Journal 14 Mar 2022
Imagine stupidly ignoring current puzzle!
Puzzle Eugene Sheffer 14 Feb 2022
Conundrum Premier Sunday 23 Jan 2022
Conundrum Universal 20 Dec 2021
Mystery Canadiana 29 Nov 2021
Puzzling mystery The Times Concise 17 Nov 2021
"The Imitation Game" encryption machine LA Times Daily 07 Nov 2021
Personality that’s hard to read New York Times 24 Oct 2021
Mysterious puzzle The Times Concise 19 Oct 2021
Puzzling thing The Times Concise 15 Sep 2021
Puzzle The Telegraph Quick 24 Aug 2021
Mind-boggler LA Times Daily 17 Aug 2021
Mind-boggler The Washington Post 17 Aug 2021
Monthly publication of the National Puzzlers' League, with 'The' New York Times 15 Aug 2021
Puzzle's meaning not essentially obscure
Real puzzle The Washington Post 20 Jul 2021
Real puzzle LA Times Daily 20 Jul 2021
Gamine poses riddle
A setter having a drink, raises a question
Real baffler The Washington Post 06 Jun 2021
Real baffler LA Times Daily 06 Jun 2021
Riddle The Sun Two Speed 04 Jun 2021
Poser in game that's fixed The Sun Two Speed 04 Jun 2021
Conundrum Wall Street Journal 01 Jun 2021
Riddle cracked in game
Mystery USA Today 11 May 2021
Baffling puzzle Newsday 04 May 2021
Conundrum The Telegraph Quick 23 Apr 2021
Great mystery (anagram of "gamine")
Brainteaser Premier Sunday 11 Apr 2021
Great mystery
Mystery of wild game found around Ulster Irish Times Crosaire 31 Mar 2021
Old lady supporting one in English mystery
It's mysterious, difficult to understand Irish Times Simplex 12 Mar 2021
Me tipsy with gin: a mystery The Sun Two Speed 06 Mar 2021
Mystery, riddle Irish Times Simplex 22 Feb 2021
Mystery, puzzle Irish Times Simplex 16 Feb 2021
Good filling a hole up in puzzle The Telegraph Toughie 02 Feb 2021
Puzzle Eugene Sheffer 01 Feb 2021
Total mystery The Washington Post 17 Jan 2021
Total mystery LA Times Daily 17 Jan 2021
Head-scratcher Universal 23 Dec 2020
Puzzle Newsday 13 Dec 2020
Brainteaser in game, puzzling
Conundrum New York Times 30 Nov 2020
Conundrum The Sun Two Speed 08 Nov 2020
Riddle good in mysterious anime The Sun Two Speed 08 Nov 2020
Source of bafflement Universal 05 Nov 2020
Perplexing thing Newsday 05 Nov 2020
Imagine losing head and dancing! It can be perplexing!
Confused in game puzzle The Sun Two Speed 30 Oct 2020
Puzzle New York Times 30 Sep 2020
Playing in game creates mystery The Sun Two Speed 16 Sep 2020
Elgar’s Opus 36 is popularly known as the ____ Variations The Times Specialist Sunday 13 Sep 2020
Perplexing puzzle Wall Street Journal 08 Sep 2020
"The Imitation Game" encryption machine LA Times Daily 27 Aug 2020
'The Imitation Game' encryption machine The Washington Post 27 Aug 2020
Puzzle Thomas Joseph 18 Aug 2020
Poser trounced in game
Hard nut to crack Universal 25 Jul 2020
Riddle of English graduate imbibing drink from east?
Problem of wild game found around Ulster Irish Times Crosaire 17 Jul 2020
It's a mystery to flipping Russell consuming top malt spirit? Irish Times Crosaire 01 Jun 2020
Tough nut to crack New York Times 29 May 2020
Imagine being foxed, having to abandon one puzzle
A mystery to some playing in game Irish Times Crosaire 04 May 2020
Wartime machine with some variations? 
Something baffling Newsday 05 Apr 2020
Me sloshed with gin — a mystery The Sun Two Speed 01 Apr 2020
Total mystery, say (rhymes with "stigma")
Total mystery Wall Street Journal 23 Mar 2020
Mystery Premier Sunday 22 Mar 2020
Hemingway ignores why this is hard to fathom Irish Times Crosaire 18 Mar 2020
Puzzle imagined to be tricky — not the first or last
New meaning, not new puzzle
Conundrum Newsday 29 Dec 2019
A sports car in Spain raised problem The Telegraph Cryptic 30 Nov 2019
Puzzle The Times Concise 03 Nov 2019
Mystery ingredient of Seagram gin -- enjoyment's up! The Telegraph Cryptic 05 Oct 2019
Conundrum Canadiana 23 Sep 2019
Imagine one away breaking wartime code
Baffler LA Times Daily 30 Aug 2019
Baffler The Washington Post 30 Aug 2019
Puzzler Universal 28 Aug 2019
Riddle good seen in fantastic anime The Sun Two Speed 09 Aug 2019
Puzzlement Premier Sunday 28 Jul 2019
Inscrutable puzzle Wall Street Journal 08 Jul 2019
Imagine bad setter's abandoned puzzle
It's hard to figure out Universal 08 Jun 2019
Force in Maine novel provides a type of mystery Irish Times Crosaire 31 May 2019
Person or thing that is mysterious
Mystery when head of gold found in a hole pulled up
Mystery Canadiana 04 Mar 2019
Mysterious sort Wall Street Journal 20 Feb 2019
Mystery Wall Street Journal 16 Feb 2019
Puzzle-solving in game
Real puzzle The Washington Post 27 Jan 2019
Real puzzle LA Times Daily 27 Jan 2019
Puzzle Wall Street Journal 19 Jan 2019
It's hard to figure out
Puzzler
Baffler
Inscrutable puzzle
Real puzzle
Mysterious sort
Mystery
Puzzle
Puzzle
Perplexing puzzle The Washington Post Sunday 23 Dec 2018
Hard-to-crack puzzle USA Today 21 Dec 2018
Ciphering system cracked by Alan Turing USA Today 20 Dec 2018
Beaming head off, boisterously closed book
Puzzle's unusual meaning when noun's omitted The Telegraph Cryptic 29 Nov 2018
Show-off in game is a mystery to others Irish Times Crosaire 27 Nov 2018
Mystery The Guardian Speedy 27 Oct 2018
Mystery The Telegraph Quick 16 Oct 2018
Riddle Premier Sunday 14 Oct 2018
German cipher machine used in the Second World War The Times Specialist Sunday 07 Oct 2018
Mystery in game, possibly, e.g. man I exchanged The Telegraph Cryptic 30 Sep 2018
Puzzle in game needs to be worked out
Me drunk with a gin? It's puzzling! The Sun Two Speed 12 Sep 2018
Puzzling riddle Universal 29 Aug 2018
Real mystery The Washington Post 16 Jul 2018
Real mystery LA Times Daily 16 Jul 2018
Puzzle The Times Cryptic 15 Jul 2018
Puzzle in game to be solved The Sun Two Speed 25 May 2018
Tough nut to crack Wall Street Journal 23 May 2018
Puzzle‘s meaning can be decoded without a name
Decipher pointless meaning of puzzle
Mystery in game that's fixed The Sun Two Speed 05 Apr 2018
Unhappily imagine being short of one puzzle
Hard puzzle LA Times Daily 05 Mar 2018
Hard puzzle The Washington Post 05 Mar 2018
Mystery at heart of agent's slight remark
Starting late, imagine tricky puzzle The Telegraph Cryptic 07 Feb 2018
Mystery New York Times 04 Feb 2018
Three excited about good puzzle
Mystery Machine's case, again leader lost Shaggy?
Conundrum
Tough nut to crack
Mystery
Puzzling riddle
Hard-to-crack puzzle
Ciphering system cracked by Alan Turing
Real mystery
Puzzle, riddle Irish Times Simplex 29 Nov 2017
WWII device: a piece of ordnance used around about capital of Germany
Puzzling thing The Times Concise 31 Oct 2017
The Mona Lisa's smile, e.g New York Times 21 Oct 2017
Devious game in mystery The Telegraph Cryptic 12 Oct 2017
Paradox Premier Sunday 08 Oct 2017
Government in Maine worried by mystery Irish Times Crosaire 25 Sep 2017
Mystery engineer knocks back spirit with family member Irish Times Crosaire 16 Sep 2017
Game in wild is a mystery to me Irish Times Crosaire 06 Sep 2017
Elgar's variations of gamine
Mysterious baffler Universal 01 Sep 2017
Inscrutable sort Wall Street Journal 26 Jul 2017
Riddle The Telegraph Quick 09 Jul 2017
Tough nut to crack USA Today 01 Jul 2017
Shown up, Paul's clothes embarrassing ultimately, a poser
Puzzle in game to be worked out
Riddle The Guardian Speedy 22 Apr 2017
Puzzle that's new in processing image The Telegraph Cryptic 08 Mar 2017
It's truly puzzling Universal 28 Feb 2017
Mystery unravelled in game
Mystery or riddle Irish Times Simplex 17 Feb 2017
Hard puzzle to figure out Universal 31 Jan 2017
Brain-twister USA Today 31 Jan 2017
Mind-boggler Premier Sunday 22 Jan 2017
New game in for puzzle
It's something of a mystery Family Time 16 Jan 2017
Poser Wall Street Journal 07 Jan 2017
Tough nut to crack
Conundrum
Mysterious baffler
Hard puzzle to figure out
Brain-twister
The Mona Lisa's smile, e.g.
It's truly puzzling
Game in crackers is a puzzle The Telegraph Cryptic 24 Dec 2016
Mysterious puzzle Universal 11 Nov 2016
Puzzle that's a stumper Universal 27 Oct 2016
Source of wealth bearing good returns, a mystery The Times Cryptic 19 Sep 2016
German cipher machine cracked by Alan Turing The Washington Post 15 Jul 2016
Encryption machine featured in 'The Imitation Game' The Washington Post 30 Jun 2016
Mind-boggling puzzle Universal 28 Jun 2016
Puzzlement Jonesin 28 Jun 2016
Puzzling situation USA Today 23 Jun 2016
Imagined flying without wings to be a problem
It's a mystery why one might read Hemingway
Riddle USA Today 08 Apr 2016
Tough puzzle Newsday 05 Apr 2016
Perplexity New York Times 14 Feb 2016
Mystery Eugene Sheffer 21 Jan 2016
Energy and spirit returning, mum closed book
Puzzle The Telegraph Quick 06 Jan 2016
Tough nut to crack
Perplexity
Puzzle that's a stumper
Puzzling situation
Mind-boggling puzzle
Complete baffler Universal 25 Dec 2015
Brain twister Premier Sunday 06 Dec 2015
Riddle relative USA Today 01 Dec 2015
Real poser LA Times Daily 29 Nov 2015
Nazi cipher machine broken by the Allies New York Times 18 Nov 2015
Puzzle's new meaning missing at core The Telegraph Cryptic 11 Nov 2015
Riddle‘s strange meaning Niobe initially ignored
Baffling puzzle Wall Street Journal 28 Oct 2015
After midnight drink and drug, turned to puzzle The Times Cryptic 21 Oct 2015
Imagine not starting cryptic puzzle
Imagine missing one cracking puzzle
Riddle in game needs to be worked out
Mind-boggler New York Times 19 Aug 2015
Something of a mystery USA Today 13 Aug 2015
'The Imitation Game' machine New York Times 17 Jul 2015
… in game-changing conundrum
Hard to understand or imagine headless characters
Musical variations on this puzzle
Solve in-game problem
Puzzlement USA Today 27 Mar 2015
...essentially hidden meaning in cryptic puzzle
It's a mystery to me, as it's under your nose! Irish Times Crosaire 12 Feb 2015
Real poser
Something of a mystery
Riddle relative
Puzzlement
Head-scratcher
Puzzler
Hard puzzle
Complete baffler
"The Imitation Game" machine
Mind-boggler
Nazi cipher machine broken by the Allies
Brain twister
Baffling puzzle
Reflect in the morning with spirit and energy to solve puzzle
Puzzle — new one inserted in extended game
A lot of information perhaps turning up about good puzzle
Riddle
It's a mystery
Baffler
Reason to be at sea?
Puzzle
It's a mystery
It's puzzling
It's mind-boggling
It's puzzling
Conundrum
It's hard to untangle
Brain teaser
Riddle
7 good to keep in a dark hole? On the contrary
Variations in code who could possibly imagine? Not I
"Sadeness (Part I)" electronic band
Conundrum
It's a mystery
Puzzling situation
Puzzling person
Contradictory character
Baffling puzzle
Baffling problem
Puzzling problem
Head-scratcher
Conundrum
Puzzlement
Puzzling problem
Conundrum
In game, cracked riddle
Variation resolved in game
Tough nut to crack
Challenging riddle
Brain twister
Baffling problem
Hard-to-know person
It's no no-brainer
Tough nut to crack
Conundrum
Puzzle
Riddle
Something inscrutable
"I'm a walking, talking ___": Larry David
Baffling problem
Puzzle
Baffler
Head-scratcher
Tough nut to crack
WWII coding machine
Brainteaser
Stumper
Closed book
Mind-boggler
It's something of a mystery
Head-scratcher
Appropriately named monthly of the National Puzzlers' League, with "The"
WWII encryption machine
Puzzle
Problem
"Hmm" provoker
Conundrum
Puzzling situation
Something hard to grasp
Inscrutable sort
Riddle or puzzle
Problem
Poser
Puzzling person
Tough puzzle
Puzzle
Puzzling person
Puzzling sort
Brainteaser
Toughie
Inscrutable sort
Mystery
Knot
Mystery
Inscrutable person
Brain twister
Poser
Stumper
Real poser
Puzzle
Toughie
Poser
It's hard to understand
Stumper
Puzzle
It's no no-brainer
Stumper
Puzzling person
WWII cipher machine
WWII coding machine
Encryption machine of yore
Riddle
National Puzzlers' League publication, with The
Conundrum
It's not clear
It's hard to understand
It's inexplicable
Riddle relative
Axis enciphering machine
"Hmmmmmm" provoker
Mona Lisa's smile, for one
Something puzzling
Puzzle or riddle
WWII code machine
Cryptic mystery
Real poser
Closed book
Stumper
Riddle
Real poser
"Hmm?" inducer
Poser
Poser
Challenging riddle
Tough one to figure out
Challenging riddle
It's a puzzlement
It's hard to fathom
Something of a mystery
Something inexplicable
It's puzzling
Mystery
It's mind-boggling
Perplexity
Perplexer
"Hmmmmmm" provokeer
Cracked object of WWII
Conundrum
Riddle
Complete baffler
Mystery
Puzzlement
It's a mystery
World War II encoding machine
Puzzle
Riddle relative
Puzzle
Mystery
Sphinx
Elgar's "___ Variations"
Perplexing puzzle
Riddle
" __ Variations": Elgar opus
Elgar's "____ Variations"
W.W. II German cipher machine
A puzzlement
Something inscrutable
Baffling matter
Brainteaser
Hard nut to crack
Russia, to Churchill
Elgar's variations
Churchill word for Russia
Woman's age, for one
Obscure saying.
Conundrum.
National Puzzlers League newsletter, with "The"
Sphinxian riddle.
Propounded by the Sphynx.
Inscrutable person.
Mystery.
Ambiguous saying.
Riddle.
Puzzle.
Sphinxian poser.
Sphinxian problem.
Stalin's plans.
Unsolved mystery.
Nazi's cipher
Anything puzzling.
Sphinx.
Baffling problem.
Code broken in the 2014 biopic "The Imitation Game"
Inscrutable one.
Puzzling person.
Baffling person.
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