MIT Mystery Hunt Puzzle Index: All Keywords

26-skiddoo puzzle: see alphagram

3-D modeling

3SAT (boolean satisfiability problem)

42 Essential 3rd Act Twists

52-skiddoo puzzle: see alphagram

5-bit binary alphabet: see binary/biliteral/Baconian cipher

5D Chess with Multiverse Time Travel

69 Love Songs

7 Little Words (online word game)

7 Wonders (board game)

7xwords

“88 Lines About 44 Women”

8-ball (pool game)

A=1, B=2, ...

A1Z26: see A=1, B=2, ...

achievements in video games

A Chorus Line

ACME's Have You Tried document

acronyms

actors playing famous people

Ada programming language

A Day in the Life

adding "in bed" to fortunes

Adventure (Atari 2600 game)

Adventure Time (animated program)

Aksharapalli number system

alethiometer (golden compass from His Dark Materials)

algorithmic complexity

Alice in Wonderland

aliens

alignments (Dungeons and Dragons)

All About Steve

Allied Occupation puzzle: see Fillomino puzzle

Alphabet Soup (Penny Press): see alphagram

alphacode: see Alphacipher

alphagram

alphametics (encoded arithmetic)

Alpha Sleuth

Altered Beast (video game)

Alternate Corners puzzle

alt tags

Alvin and the Chipmunks

“The Amazing Race”

American Film Institute's top 100 movies lists

American Girl dolls

America (the Book): A Citizen's Guide to Democracy Inaction

amino acids

Among Us (game)

Anacrostic puzzle: see double crostic

Android version code-names

Angband (Rogue-like game)

Anglo-American telegraph code

Anglo-Saxon language

Anguished English

Animal Crossing: New Horizons

animals

Animals on the Underground web site

Animal, Vegetable, or Mineral

The Animaniacs

anime

answer given for completing task

Apples to Apples game

Arrested Development (band and TV show)

arrow ring puzzle: see yajilin

Ars Goetia

art

Artist's Block: see Spiral Galaxies puzzle

arukone: see Number Link puzzle

arXiv academic paper preprints

ascending and descending letters

Athena (MIT computer system)

Atlantic City

atmospheric layers

audio crossword

audio file manipulation

augmented reality

Australian English language

Aztec numerals: see Mayan/Aztec numerals

Back and Forth (puzzle type)

background music

backsolving

backswitch

Back to the Future movies

"Backwards" (Rascal Flatts song)

backward talking

the (Kevin) Bacon game

badges

“The Bad Touch” (Bloodhound Gang song)

Bag puzzle: see Corral puzzle

Balance Loop logic puzzle

balance puzzle

"The Ballad of Lydia Pinkham"

BASIC programming language

“Batman” (60s TV series)

Battle Line (game)

battles

Battleship (board game)

Battleships (puzzle)

“Battlestar Galactica” (2000s TV show)

Ben & Jerry's ice cream

Bhavacakra (Buddhist Wheel of Life)

Bhutasamkhya system of numbers

The Bible

bifid cipher

“Big Bang Theory” (TV show)

“Big Brother” (reality TV show)

bigrams

Binairo

binary

binary/biliteral/Baconian cipher

binary tree

The Binding of Isaac (roguelike video game)

bingo

binomial nomenclature: see scientific names for organisms

biological taxonomy: see scientific names for organisms

black and white (logic puzzle)

Black Box crosswords

Black Box (game)

black box (solver must figure out inner workings)

blackjack

blacklight

"The Blacklist" (TV show)

Mr. Blackwell's Worst Dressed List

blank answer

blank puzzle

Blaseball

"Blessed Messiah and the Tower of Ai"

blindness

block-style crossword

Board Game Geek (web site)

Bob's Burgers (TV series)

bridge bidding conventions

bridge (game)

bridges

Bridges puzzle: see hashiwokakero

British and American English differences

“Buffy the Vampire Slayer”

bughouse chess

bugs

building 16-56 floor code

building 2 mathematical models

building 56 murals

building 6C floor squares

Building Blocks puzzle: see lettered dice

buildings

Bulgarian language

Bulls-Eye 20 Questions

bullseye crossword

Bulwer-Lytton Fiction Contest

Burman language

burr puzzles

buses

busy beaver Turing machines

"but I hardly know her" jokes

BWV numbers (Bach music catalog)

Cabin Pressure (BBC radio show)

Caesar shifts

calcudoku: see KenKen

calculatrivia

calendars

call letters of TV or radio stations

Cambridge street cleaning schedule

Camelot (board game)

Canadian Aboriginal syllabics

cannabis: see marijuana

capitals of states or countries

Carnatic (South Indian Classical) music

“Car Talk” (radio program)

Cartesian coordinates

Castawords puzzle: see lettered dice

Castilian: see Spanish language (Castilian)

The Cat Who... mystery series

causal loop diagrams

Cave puzzle: see Corral puzzle

celebrities' original names

celebrity baby names

celebrity deaths

celebrity photos

Cell Structure puzzle: see Nurikabe

characteristic polynomial

chemicals (particular molecules)

chemistry

Cherokee language

Cherokee numerals

Cheryl's Birthday problem

chess

chess variants/fairy chess

chewing gum

children's books

Chinese brand names

Chinese five elements

Chinese language: see Mandarin Chinese language

Chinese numerals

Chinese remainder theorem

Chinese zodiac/calendar

chiptunes

chocolate ingredients

choose your own adventure

circular periodic table

Clabbers (anagram Scrabble)

Colemak keyboard: see keyboard

collective names for animals

college football bowl games

college sports team nicknames

color blindness

color palettes in image files

colors

color separations

colors of noise

colors of the rainbow

col (saddle point between mountains)

combination locks

comedians

comics

Commander Keen alphabet

commercials

Commodore 64

common letters

common meter for songs

Commonwealth Avenue Mall

The Communards (band)

communication

Community Solar System (exhibit of the Museum of Science)

"Community" (TV Show)

compass points

completing the square

complex numbers

composers of music

computer architecture

conlangs: see invented languages

Constitution of the U.S.

construction

context-free grammars

Conway's Game of Life: see Life (cellular automaton)

cooking/bring us food

"Cooking with Dog" (YouTube show)

"Countdown" (British game show)

counties

counting shapes

countries

country codes (any variety)

country music

Country Road (puzzle type)

The Court Jester (1955 film)

court settlements

covers (musical remakes)

cowbell songs

cowboys

Cow Parade (civic art projects)

Cross Products (Cross Sums variant)

cross-stitch

cross-stitch crossword

Cross Sums

crosswordese

crossword puzzles

crosswords on the landscape

crostic puzzle: see double crostic

crows

cruise lines

crushword puzzle: see 1, 2, 3 crossword

cryptarithms: see alphametics (encoded arithmetic)

cryptic crossword clues

cultural houses within MIT's New House

Daedric alphabet (Elder Scrolls)

The Daily Show

Dai Shogi

Dance Dance Revolution

Dante's circles of Hell

"Dare to Be Stupid" (Weird Al Yankovic song)

Dark Side of the Moon (Pink Floyd album)

DARPA Network Challenge

Da Vinci's Notebook (band)

dead or alive

dead things

Deal or No Deal

Dear Sriracha (comic in The Oatmeal)

death metal

Decrypto (board game)

defecation

deficit sudoku: see udoku

deletions and insertions

Delphic maxims

demons

Demotivators (parody of motivational posters)

“Desperate Housewives”

desserts

The Devil's Dictionary

/dev/joe's Mystery Hunt Index

Dewey decimal system

D'Hondt allocation method

diacritical marks

Diagnostic and Statistical Manual of Mental Disorders

diagonalizing

diagramless criss-cross

diagramless crossword

dialogues

Diceware

Dicey Words: see lettered dice

diff files

dimension added

The Dinner Party (art by Judy Chicago)

dinosaurs

Dinotopia footprint alphabet

disconnected criss-cross

discover the hidden rules

dissection (geometric)

Dominosa: see domino puzzle

Domino's Pizza

Dotty dilemma puzzle: see fences puzzle

double crostic

double dactyls

double letters

double-or-nothing crossword

double trouble crossword: see 1, 2, 3 crossword

Dragonriders of Pern

drawing letters and numbers

dream sequences

Dresden Files books

dress-up

Dr. Horrible's Sing-Along Blog

drill sizes

drinks

DropMix (music-mixing game)

dropquotes

drugs

dubbing videos with parody dialogue

Duck Konundrum

"Dumb Ways to Die" (Melbourne train video)

Dungeons & Dragons

Dungeons and Diagrams (logic puzzle)

Dutch language

Robert Duvall

DVD region numbers

Dvorak keyboard: see keyboard

Dwarf Fortress

Dwarf Fortress conlangs

Bob Dylan songs

Easter dates

George Eastman plaque in building 6

Easy as ABC puzzle: see End View puzzle

EBCDIC

Edel puzzle: see paint by numbers (logic puzzle)

edge matching puzzles

eggcorns

EGOT

Einstein's puzzle: see logic puzzle based on elimination

elder futhark: see Futhorc

electoral college

electrical engineering

electric circuits

elimination tournament

Encyclopedia of Integer Sequences

End View puzzle

Enigma cipher

Entertainment Weekly magazine

enzymes

Epic Rap Battles of History

episode titles

epithets

eponyms (words made from people's names)

Equation Analysis Test (26 = L. in the A.)

Escape from Zyzzlvaria

escape room

Escape This Podcast

esoteric programming languages

Eurovision Song contest

Chris Evans

even/odd letters

events

events staged multiple times

Every Second Turn: see Alternate Corners puzzle

evolutionary tree

EXIF data

experimental study group (ESG at MIT)

expired facts

explorers

ext2 filesystem

external publications and broadcasts

extra answers

eye chart

"The Eye of Argon" (short story)

Fact Sphere (Portal 2)

Fallout 4 (video game)

false cognates

false comparatives

false friends: see false cognates

Fear and Loathing in Las Vegas

feast days for saints

federal congressional districts

Federal Reserve banks

FedEx tracking numbers

fences puzzle

Fermat's Last Theorem

fictional characters' love interests

fictional characters who attended MIT

fictional curse words

fictional definitions of words

fictional secret organizations

fictional steeds

fictional train stations

fictional weapons

Figure Logic puzzle: see cross-number puzzle

Final Fantasy video games

first and last letters of words

first ladies

firsts

fish

Fit-In puzzle: see fill-in puzzle

flags

flats (NPL puzzles)

flavors

Flesch-Kincaid grade level

floating point roundoff

floods

flower meanings

flower names

flower power puzzle: see petal puzzle

Fold-Ins (as in Mad Magazine)

forms (word squares and others)

Formula 1 racing

Fortran

fortune cookies

four horsemen of the apocalypse

Four Quartets by T.S. Eliot

fourteen-segment displays

fractals

“Fra Lippo Lippi” (Browning Poem)

framelinks

Fraternal Twins puzzle

fraternities

FreeCell (solitaire card game)

The Freedom Trail

free puzzle

French language

French Republican Calendar

frequency distributions

Fruits Basket (anime)

Funny Farm

Furbish conlang

futhark: see Futhorc

Game of Life (cellular automaton): see Life (cellular automaton)

Game of Thrones

games

game shows

game shows staged for solvers

game theory

"Gangnam Style"

Garbage Pail Kids

The Garden of Earthly Delights

garden-path sentences

Garfield

“Gashlycrumb Tinies”

gattai: see samurai sudoku

gendered names for animals

genealogy

generals

genes

The Genius (Korean reality TV series)

German compound words

German language

German sausage puzzle

Gilbert schema for Ulysses

Gnommish alphabet (Artemis Fowl)

Godel, Escher, Bach: An Eternal Golden Braid

Go Fish

go (game)

Going Too Far crossword

Gokigen Naname: see Slant puzzle

Google Maps user maps

Google Street View

Google Translate Sings

Graffiti (Palm Pilot writing)

Sue Grafton novels

grammar

Grand Tour puzzle: see path puzzles

The Great British Bake Off

great circles

The Great Dome

greatest common factor

Griddlers: see paint by numbers (logic puzzle)

Guardians of the Galaxy Vol. 2

Guillotine (card game)

guitar playing

guns

gym badges (from Pokémon)

Mark Halpin's Labor Day puzzles

Hamiltonian paths

Hamilton (musical)

Hanabi (cooperative card game)

Hanayama disassembly puzzles

hanging on for dear life

hangman

Hangul (Korean script)

Hanjie: see paint by numbers (logic puzzle)

Harry Potter

Harvard

Harvard Sentences

Harvard spectral classification

hash algorithms

hashi: see hashiwokakero

hashiwokakero

hat tricks (hockey)

haunted places

Hayden elephant mural

Joseph Haydn

Hearthstone: Heroes of Warcraft game

Here-There (MIT Media Lab art)

Hermes Conrad (Futurama character) "Sweet X of Y" phrases

Charlton Heston

heteromino (logic puzzle)

hidden tracks on albums

hidden words

hieroglyphics

High Fidelity (book)

high school CEEB codes

Al Hirschfeld (caricatures with "Nina")

historical events

historical markers

"A History of the World in 100 Objects"

The Hitchhiker's Guide to the Galaxy

Hollywood Walk of Fame

Sherlock Holmes stories

Homestar Runner

home worlds

homonyms: see homophones

homophones

homophonic substitution cipher

Honeycomb crossword

hops (beer ingredient)

horse racing

Hotaru Beam puzzle

Hot Ones (YouTube show)

house of cards

House of Representatives

“House” (TV show)

How I Met Your Mother (TV series)

hull numbers of ships

Hundreds of Chinese Surnames

i before e except after c exceptions

I Can Has Cheezburger

ICD-10 codes for medical diagnoses

identify text from stress pattern, prosody, or poetic meter

Illinois driver's license code

The Improper Bostonian

Inception

InChI (international chemical identifier)

Increasingly Verbose meme

Index Sums puzzle: see kakurasu

India

Indian numerals

The Infinite Corridor

Infinity Train (cartoon)

Infocom games

infographics

information missing

Ingress glyph language

initials

Inner Circles puzzle: see Honeycomb crossword

In-person interview

insult swordfighting

integer sequences

Interactive Introduction to the Institute (i3) videos

interleaved words

intermediate tasks

International Math Olympiad (IMO)

Internet RFCs

internet top-level domains

intersections

___ in the ___ phrases

Inuktitut language

Invader (street artist)

invented languages

inventions

invisible ink

IPA (international phonetic alphabet)

IP geolocation

iPhone apps

iPod Submarine (party game)

Iraqi Most Wanted playing cards

“Iron Chef: America”

Irregular Webcomic!

Isabella Stewart Gardner Museum

Islands in the Stream puzzle: see Nurikabe

isobars

isomorphic graphs

Italian language

"It's the End of the World as We Know It (And I Feel Fine)"

Ivy League

"Jack and the Beanstalk"

"Jellicle Songs for Jellicle Cats" (song from Cats)

Jelly Belly jellybeans

John Hodgman's hobo names list

JoJo's Bizarre Adventure (anime and manga series)

Just One (word-guessing game)

“Kaiju Big Battel”

kakurasu

Kakuro: see Cross Sums

Keep Talking and Nobody Explodes

KenKen

John F. Kennedy

kennings

Kenny's deaths on "South Park"

kerning

Key and Peele (Comedy Central show)

keyboard

keyboard shortcuts

keyed-order crossword

killer sudoku

Killian Court names

Kingdom of Loathing

The King of Kong: A Fistful of Quarters

knights (British titles)

"The Knowledge" (London black cabs)

kriss kross: see criss-cross

The Language of Flowers: An Alphabet of Floral Emblems

languages

Lao numerals

Lapine (conlang from Watership Down)

lasers

Last Week Tonight with John Oliver

last words

"La Terre vue du ciel" (photograph series by Yann Arthus-Bertrand)

LaTeX

Latin language

Latin names of cities

Latin phrases

Latin squares

Latke vs. Hamentaschen debates

letter adjacency graphs

“letter and word” phrases

letter pairs that look like another letter

letter shifts

letters in alphabetical order

letters in same positions

letters shared, adjacent words/squares

liar logic puzzles (and self-referential statements, etc.)

library catalog numbers

Library of Babel

license plates

Life (cellular automaton)

The Life of Pi

Lights Out

Light Up puzzle: see Akari puzzle

Linear B script

linguistics

Link-a-Pix

Link's Awakening trading sequence

Linnaean binomial nomenclature: see scientific names for organisms

lobby 6 periodic table

Lobby 6 "The Physical World" mural

lobby 7 Inscription

logical deduction

logical operators

logic puzzle based on elimination

Logo (programming language)

logos

Lojban (conlang)

lolcats

longitude and latitude

“Look Around You” (British TV show)

Looney Tunes

Loop and Block puzzle

Loop the loop puzzle: see fences puzzle

Lord of the Rings

Lost Cities (game)

H. P. Lovecraft

Lovecraft Letter (game)

Macy's Thanksgiving Day Parade

Mad Libs

Mad Men

magazine covers

magazine writing styles

"Major General's Song"

Mandarin Chinese language

marathon run in under 2 hours

Marble League 2020

Marching Bands

marijuana

Mario Kart video games

maritime signal flags

Markov models

Marvel alternate Earths

Marvel Cinematic Universe

Maslow's Hierarchy of Needs

Massachusetts Avenue (street near MIT)

Matoran alphabet (Bionicle)

matrices

Walter Matthau roles

Mayan/Aztec numerals

Mayfield Handbook (writing reference)

mazes

McMaster-Carr catalog

MD5 hashes

meat

medical names for conditions

mergers and acquisitions

Merriam-Webster dictionaries

message encrypted multiple times

Middle Earth (Tolkien setting)

middle names

Midnight Madness

midpoints

Nightmare on Elm Street films

Minor League Baseball

minor planet numbers

miracle sudoku

mirror logic puzzles

Mirror Universe puzzle

misheard lyrics

misspellings

Miss Universe pageant

Mistborn series by Brandon Sanderson

MIT a capella groups

MIT Board of Chaplains

MIT brass rats

MIT building names

MIT building numbers and room numbers

MIT campus phone numbers

MIT classes

MIT class gifts

MIT course bulletin

MIT courses (departments/majors)

MIT door inscriptions

MIT fire extinguisher numbers

MIThenge

MIT history mural in Kendall Station

MIT homepage "Spotlight" images

MIT ID cards

MIT Library Access Music Project

MIT Museum

MIT Musical Theatre Guild

MIT named rooms

MIT Nerdopoly (edition of Monopoly game)

MIT OpenCourseWare

MIT people (staff, alumni, etc.)

MIT professors

MIT public art

MIT student groups

MIT theatrical productions

Mixed Doubles crossword: see Split Ends crossword

mixtures

mnemonics

Mobius strip

Mohs scale of hardness

molecular models

money

Monopoly game

Monster Factory (YouTube series)

monsters

month abbreviations

Monty Python

Mooninites advertising Aqua Teen Hunger Force

moon names from Farmers' Almanac

The Most Interesting Man in the World

mother sauces of French cuisine

mountains

movie or TV show remakes

MTV Movie & TV awards

multidigit sums puzzle

multiple answers to logic puzzles

multiple crossword solutions

multiple meanings of words

Muppets

the Muses

mushrooms

music adapted from classical music

music (identification from audio samples)

music (identification from clues or lyrics)

music (other)

music (sheet music, transcriptions of notes, or solfege)

music videos

mustaches

"My Brother, My Brother and Me" (podcast)

My Little Pony

Myspace

Mystery Hunt

Mystery Hunt: refers to other puzzle in same hunt

Mystery Hunts of the past

Mystery Hunt team names

Mystery Science Theatre 3000

The Name of the Rose by Umberto Eco

NATO alphabet: see phonetic alphabet

Nautical Almanac

Navajo code talk

navigation way points (fixes)

NCAA basketball tournament

Nethack (rogue-like game)

neural networks

neurons

The Neverending Story

"Never Not Funny" (Jimmy Pardo podcast)

Isaac Newton's apple tree

New York Times crosswords

NFPA 704 fire diamonds

nicknames

nicknames for playing cards

no four in a row (logic puzzle)

non-intersecting crossword

Nonograms: see paint by numbers (logic puzzle)

No Such Thing as a Fish (podcast)

not alone (logic puzzle)

number place: see sudoku

numbers

numbers associated with or in words

number two

Numbrix: see Hidato puzzle

numeronyms

Nurikabe

nursery rhymes

Nuruomino: see LITS puzzle

"___ of the ___" phrases

omnidirectional crossword

On Beyond Zebra

One.MIT

One Piece (manga)

one-time pad, Gronsfeld cipher, or Augustus cipher

one time pad used multiple times

“One Week” (Barenaked Ladies song)

Only Connect (British TV game show)

optimization problems

opus numbers

ordered sets

ordering logic puzzles

The Order of the Stick (webcomic)

O'Reilly covers

origami

The Orville

Oscars (Academy Awards)

paint by number (coloring book)

paint by numbers (logic puzzle)

paintings

pairing up matching things

pairs (__ & __)

palindromes and palindromic sequences

Palm Pilot application

parts with unusual names

Pentomino Minesweeper (logic puzzle)

Pentominous puzzle

people executed by hanging

Percy Jackson and the Olympians books

periodic behavior

periodic table of the elements

periodic table parodies

Perl

permutations

Persian language: see Farsi language

Persona 5

petal puzzle

Peter's evil overlord list

phonespell (2 = A,B,C)

phonetic alphabet

phonetic ambiguity

phonetic letters and numbers (NV = envy or single letters)

phrase structure grammar

phrases with a set of words

phylogenetic trees: see cladograms

physical education (P.E.)

physics

Pic-a-Pix: see paint by numbers (logic puzzle)

picking locks

Picross: see paint by numbers (logic puzzle)

Pic-Tac-Toe

Pictionary

Piet programming language

Pipe Dream crossword: see pathfinder crossword

pips

Pixar films

pizza toppings

places north of other places

Places, Please puzzle: see reverse word search

places with the same name

planets

plants

pastic recycling codes: see resin identification codes

plastics

Playboy playmates

Playfair square cipher

playing cards

playing cards code (assigning letters to specific cards)

polarization of light

Polcari's Italian Restaurant in Tech Square

police alphabet: see phonetic alphabet

The Police (band)

Polish language

polyominoes

Poor Richard's Almanack

popcorn

popes

popup ads

Popy Chogokin robot toys

porn

portable electronic devices

position players pitching

pot: see marijuana

presidential also-rans

programming algorithms

programming contests

programming languages

Proof of Quilt: see Shakashaka puzzle

proofreading marks

proteins

proverbial sayings

provinces, states, divisions of countries

Pset (MIT homework set)

PubMed (National Library of Medicine repository of papers)

punch cards

Punch Out!! (video game)

punctuation

Punjabi language

puns

Puns and Anagrams crossword

Purenrupu: see path puzzles

Python programming language

QI (British game show)

QR code

Quadrate (area in Mannheim, Germany)

“Quantum Leap” (TV show)

quantum superposition

quarks

Questions (game)

questions with two answers

quotation puzzle: see dropquotes

quotations

quotefalls: see dropquotes

quote square

qwerty: see keyboard

QWOP

racetracks

racing

radio broadcasts (localized)

Railroad Crossing puzzle

railroad interlocking (switches and signals)

Railroad Tracks puzzle: see Railroad Crossing puzzle

rainbow: see colors of the rainbow

John Ratzenberger characters

“The Raven” (Poe poem)

Razzie awards

"Real Housewives" (TV show)

Real Men of Genius (Bud Light ad campaign)

rebus

rebus crossword

Red Dragon Inn board game

Red Light Green Light

reduce, reuse, recycle

reduplications

Reese's Peanut Butter Cups

rescue and salvage ships

reserved words

resin identification codes

resistor color code

The Restaurant at the End of the Universe

ribbons (substitute military medals)

"Rick and Morty" (cartoon)

River Crossing logic puzzles

Rock & Roll Hall of Fame

Rock Band (game)

rock climbing

rocketry

rock, paper, anything

rock, paper, scissors

rock, paper, scissors, lizard, spock

Rolling Stone's 500 Greatest Songs of All Time

Roscolux lighting filters

rotator logic puzzle: see Spiral Galaxies puzzle

round-robin tournament

Round Trip puzzle: see path puzzles

Rows Garden

RSA cipher

RSA Factoring Challenge

rubbings

Rube Goldberg machines

Rubik's Cube

rum

Rummikub

runarounds (and photo identification of MIT)

runes: see Futhorc

Rupaul's Drag Race

Rush Hour (sliding block puzzle)

Russian language

sabermetrics

SafeRide (MIT shuttle system)

saints

Salt Lake City, UT

Salt-N-Pepa (hiphop group)

same title, different work

samurai sudoku

Sanskrit language

Saturday Night Live

Scattergories

scavenger hunt

scholar's mate (chess game)

"School Song" (alphabet song from Matilda, the Musical)

scientific names for organisms

"Scooby Doo, Where are You!"

Scotland Yard (board game)

Secret Service codenames

security questions

Seeking Syren (logic puzzle)

selfies

self-modifying programs

Semantle

semaphore

Senate

Senior House entry names

sentence diagrams

sephiroth (tree of life)

Sesame Street

Set (card game)

sets

Settlers of Catan (game)

Dr. Seuss

Seven Sages puzzle

seven-segment displays

sex-related terms

sex toys

Sgt. Pepper's Lonely Hearts Club Band

shortened forms of words

shortlex order

Will Shortz

Siamese Twins puzzle

signal loop (logic puzzle)

Sign Language

silent letters

similes

Simmons Hall (MIT Building)

Simplified Chinese characters

The Simpsons

simulated computer

"Single Ladies" (Beyonce song)

Singlish (Singaporean English creole)

SKI combinator calculus

skipping crossword

ski trails

Skulduggery Pleasant books

skyscrapers puzzle

Slalom puzzle: see Slant puzzle

slang

Slant puzzle

slide puzzle

Slither Link: see fences puzzle

slogans

Slovak language

Slow-scan television (SSTV)

Snow White and the Seven Dwarfs

Solitaire Dominoes: see domino puzzle

Solitaire (encryption algorithm from Cryptonomicon)

solitaire hangman puzzle

Solresol (musical conlang)

solution missing

Some Assembly Required

something different crossword

Stephen Sondheim

songs named for musicians

songs with lists

Aaron Sorkin shows

sound changes (phonetic letter changes)

space groups (crystallography)

Space Jam

space shuttle

Spaceteam (app/game)

Spaghetti (metapuzzle creation game)

spaghetti westerns

Spam Haiku Archive

Spanish language (Castilian)

Sparks (band)

spatial perception

spectrograms

spectrum: see colors of the rainbow

speeches

speedruns

spelling bee

spelling bee losing words

Spelling Bee (New York Times puzzle)

spelling bee winning words

Spiral Galaxies puzzle

spiral puzzle

spiroglyphics

Split Decisions puzzle

Split Ends crossword

spoilers

Spongmonkeys

sponsor names in 10-250

Spontaneanation with Paul F. Tompkins (podcast)

spoonergrams: see spoonerisms

spoonerisms

Sporcle (trivia web site)

sports

sports teams with the same names

spreadsheets

square dancing

squares (named road intersections)

Star Battle (logic puzzle)

Star Trek (all series)

state superme court seals

Strava (cycling and running app)

Student Center elevator directories

John Stump (satirical composer)

subsequences

subway (the T or other cities' systems)

sudoku

suffixes

sun and moon (logic puzzle)

Super Mario Maker 2

superposition

Super Smash Bros. Melee

supervocalics: see vowels, phrases containing all

Supreme Court cases

SureType keyboard

Survivor (reality TV show)

Swahili language

Swedish language

Sweethearts conversation hearts

Sym-a-Pix: see Spiral Galaxies puzzle

the Taco Bell $2 bill story

Tagalog language

taiko

Takegaki: see fences puzzle

Takuzu: see Binairo

TaleSpin

Tamil language

Tamil numerals

tangible objects given to teams

tanglewords puzzle: see reverse word search

Technical Machines (TMs, from Pokémon)

Technique (MIT Yearbook)

tectonic plates

TED talks

telephone calls

telephone exchange words (like 55 = Klondike)

Telephone (game)

television networks

Television Without Pity web site

Telugu language

Tengwar numerals

Tentai Show: see Spiral Galaxies puzzle

tents logic puzzle

ternary cipher

test solving

TETCBN (answer appears as part of puzzle)

Tetracross puzzle

tetragrammaton appears in puzzle

The Happy Squirrel (tarot card introduced by The Simpsons)

"The Incredible Giraffe Puzzle"

The Joy of... books

The Meaning of Liff

Thermo Fisher white powders library

Thermometers (logic puzzle)

They Might Be Giants

things shaped like letters

"This is Just to Say" (William Carlos Williams poem)

Threadless T-shirts

three letter acronyms

time-sequence puzzles

Tohu wa Vohu: see Binairo

toponyms (words derived from place names)

toppling dominoes

Touch Tone dialing tones

transdeletions and transadditions

Transformers

transliteration into different writing system

transpograms

transposition cipher

traveling salesman problem

treaties

tree numbers

tree of life (cabbala)

Tupper's self-referential formula

Turing machines

Turing Prize

turkeys pardoned by the U.S. President

Turkish language

turtle graphics: see Logo (programming language)

Tuva or Bust! (Book about Richard Feynman)

TV shows

TV themes

TV Tropes

tweets: see Twitter messages

“The Twelve Days of Christmas”

Twilight Struggle (board game)

twin cities: see sister cities

UNESCO World Heritage Sites

unmanageably many/huge puzzles

unpowered record player

Untappd (beer tracking app)

UPC barcodes

upsets

upside-down calculator letters

Urdu language

urine samples

URL manipulation/guessing

US states order of entry

UTF-8 overlong sequences

valley words

Vampire: The Eternal Struggle

variogram forms: see 1, 2, 3 crossword

vaulting (gymnastics)

vector norm

Vegas Showdown (game)

vending machines

Venice Connection game

Venn diagrams

"verbing name" movie titles

vertical anaquote

The Very Hungry Caterpillar

vice presidents

video games

vi editor

views of a solid object

voiced and unvoiced consonants

Voo Doo (MIT humor magazine)

voting systems

vowel/consonant pattern

vowels, phrases containing all

Voyager Golden Record

Wacky Packages trading cards

wacky wordies

Waffle House

Waiting for Godot

“Wait, Wait, Don't Tell Me” (NPR show)

walks on the moon

walkthrough

Wally Wood's 22 Panels that Always Work

war (card game)

Washington Nationals presidents race

Watchmen by Alan Moore

Waterfall puzzle

wealthy fictional characters

weapons

weaving

Webby awards speeches

web site icons

web tricks

weird laws

Welcome to Night Vale podcast

“Well-Tempered Clavier”

Welsh language

West Coast Swing Dancing

Westminster Kennel Club

“The West Wing” (TV show)

what3words

what comes next

"What Does the Fox Say?" (Ylvis song)

what is it?

Wheel of Fortune

"Wheel of Fortune" (game show)

Wheel of Time (Robert Jordan series)

where are black cells?: see kuromasu

Where in the World is Carmen Sandiego?

Wie Is De Mol? (Dutch reality show)

Winning Ways for Your Mathematical Plays

“Winterreise” by Schubert

wolves and sheep: see Sheep and Wolves

“Wonderfalls” (TV show)

wood

Woodstock performers

Word Arithmetic: see alphametics (encoded arithmetic)

word association

Word Avalanche: see reduplications

word chains

word deletions

word functions: see discover the hidden rules

Word Search board game

words on winding paths

“Words” (poem by Dana Gioia)

working with other teams

works inside other works

world leaders

World of Warcraft

World of Warcraft Trading Card Game

World Puzzle Championship

World's Strongest Man

"Yakko Warner Sings All the Words in the English Language"

Weird Al Yankovic

Yin-Yang logic puzzle: see black and white (logic puzzle)