Puzzler's Lexicon: A–Z Guide to Puzzle Terms and Types
Welcome to an all-in-one, human-friendly dictionary of puzzle terms. Whether you build escape rooms, collect mechanical puzzles, or teach logic, this page defines the language of puzzling and links you to examples, buying guides, and trustworthy references.
For gift ideas or quick shopping help, browse our Puzzle and Game Gift Center or see what is trending in Popular Puzzles and Games.
A
- Assembly puzzle
- Goal: assemble given pieces into a specified shape or object. Often framed or 3D. See examples via site search: assembly puzzles.
- Algorithm
- A repeatable sequence of moves that solves a puzzle (commonly used for twisty cubes). For official cubing standards, see the World Cube Association.
- Alphametic
- A cryptarithm where letters stand for digits and form a valid arithmetic equation. See logic teaching resources at NRICH.
- Anagram
- Word puzzle where letters are rearranged to form new words or phrases.
B
- Any compact challenge testing logic, pattern finding, or lateral thinking. Explore brain teasers.
- Burr puzzle
- Interlocking sticks form a stable 3D shape. Often requires a key piece and precise move order. Browse burr puzzle options.
- Bolt puzzle
- A metal or wooden bolt with a trick or hidden constraint. Objective: free a nut or component without force.
- Binary puzzle
- Constraint logic grid using 0 and 1 with balancing rules (non-mechanical logic genre).
C
- Calibron 12
- Classic rectangle packing puzzle with 12 pieces of specific dimensions. See product results: Calibron 12.
- Cast puzzle
- Typically metal interlocking or disentanglement designs; made famous by brands like Hanayama.
- Cipher wheel
- Rotating rings align alphabets or symbols to encode and decode messages. See our cipher wheels.
- Combination puzzle
- State changes via discrete moves (e.g., twisty cubes). Solutions often use algorithms and parity concepts.
- Coordinate motion
- Pieces must move together simultaneously to assemble or disassemble, common in advanced wooden designs.
D
- Disassembly puzzle
- Start with a complete object; objective is to open, separate, or take apart. See disassembly puzzles.
- Disentanglement puzzle
- Separate linked parts (wire, string, wood) without force. Explore disentanglement puzzles.
- Dovetail puzzle
- Precision joinery traps components in seemingly impossible ways, often revealing a counterintuitive slide or rotation.
- Dexterity puzzle
- Uses balance, tilt, or timing (e.g., ball-in-a-maze). Objective: guide elements to target positions.
E
- Edge-matching puzzle
- Tiles must be placed so that adjacent edges match color or symbol constraints.
- Eight queens problem
- Classic chess placement puzzle: place eight queens on a chessboard so none attack another. Background: Britannica.
- Encryption puzzle
- Any puzzle leveraging ciphers or encodings. See also cipher wheel.
F
- Fifteen puzzle
- Sliding-tile classic with 15 numbered squares. Basis for many sliding block variants.
- Flexagon
- Folded paper structure that reveals hidden faces by flexing; combines math and manipulation. See NRICH for foldables.
- Frame puzzle
- Packing or assembly within a boundary frame; often multiple solutions exist with varying difficulty.
G
- Gear puzzle
- Pieces intermesh; a move on one part forces motion elsewhere (e.g., gear cubes).
- Greek cross
- Iconic dissection and assembly challenges forming a cross from limited pieces.
- Goal state
- The target configuration or condition that defines success for a puzzle.
H
- Hanayama
- Influential maker of cast metal puzzles with graded difficulties.
- Internal trick or lock that must be discovered; common in puzzle boxes.
- Higgins style lock
- Generic term for trick locks that demand non-obvious moves to open; see also trick lock.
I
- Impossible object
- Appears to defy construction or physics (e.g., arrow through block). Conversation pieces that challenge intuition.
- Interlocking puzzle
- Pieces mutually constrain each other until a correct sequence or key piece releases them.
- Inscription puzzle
- Engraved clues or symbols are part of the solution path; common on thematic boxes and ciphers.
J
- Japanese puzzle box
- Traditional multi-step secret box with precise sliding panels and elegant marquetry.
- Jigsaw puzzle
- Image is cut into interlocking pieces; challenge can involve angle, color, or piece shape deception.
- Jam state
- Sliding block condition where naive moves trap progress; requires retreat and re-planning.
K
- Kakuro
- Number-placement logic puzzle with sum constraints; a crossword of digits.
- Key piece
- The critical element that must move first (or last) to begin disassembly or finish assembly.
- Key Maze
- Multi-layered routing challenges used in escape-room-style props. Explore key maze puzzles.
L
- Lateral thinking puzzle
- Riddle-like problems solved by challenging assumptions and reframing clues.
- Latin square
- Matrix where each symbol appears once per row and column; foundation for Sudoku variants. See Britannica.
- Lock puzzle
- Padlocks or mechanisms that open via secret moves or tools. See trick lock.
M
- Magic square
- Grid where rows, columns, and diagonals share the same sum. Historical background at Britannica.
- Maze
- Route-finding challenges with dead ends, sometimes layered or 3D. Browse maze puzzles.
- Mechanical puzzle
- Hands-on objects solved by manipulation, logic, and spatial reasoning. See our broad selection.
- Metagrobology
- The study and collecting of puzzles; a metagrobologist is a puzzle aficionado and scholar.
- Move count
- Metric for difficulty: minimum number of moves required to solve or open a puzzle.
N
- Napier's Bones
- Historic calculation rods. We offer themed versions; see search results for Napier's Bones.
- N-ary puzzle
- Requires a state machine of base n (e.g., some boxes and interlocks require ternary or quaternary move systems).
- Nonogram
- Logic art puzzle (also called Picross) where row and column counts reveal a hidden image.
O
- Opening sequence
- The first required moves to start progress on a puzzle box, lock, or burr.
- Orthogonal moves
- Moves constrained to straight axes; common in sliding block or interlocking pieces.
- Opaque mechanism
- Internal trick cannot be seen directly; solver must infer behavior from feedback.
P
- Packing puzzle
- Fit all pieces into a frame or volume with no gaps or overlaps. Explore packing puzzles.
- Penny Drop
- Original tabletop dexterity and chance game by Creative Crafthouse. Learn more: Penny Drop.
- Pentominoes
- 12 polyomino shapes made of 5 squares; foundational for tiling challenges.
- Peg solitaire
- Jump pegs to remove others, aiming to leave a single peg in the board center.
- Puzzle box
- Secret-opening box requiring sequential actions; discoverable mechanisms. Browse puzzle boxes.
Q
- Quality of fit
- Precision of fabrication that affects tolerances, feel, and solution fairness in wooden puzzles.
- Queens puzzle
- Placement problems on chessboards (see Eight queens), generalizable to N queens.
- Quaternary puzzle
- Move system with base 4 states; related to the broader concept of n-ary puzzles.
R
- Riddle
- Word or situation puzzle where a concise answer resolves a scenario.
- Rotation puzzle
- Solution depends on twisting pieces or whole layers; includes many twisty cubes.
- Rubik's Cube
- The iconic 3x3 twisty cube. See competition info at the World Cube Association.
- Reversibility
- Whether a solution path can be undone via the same or mirrored moves.
S
- Safecracker puzzle
- Rotary dial or wheel puzzle that mimics safe mechanisms. Explore our designs via Safecracker.
- Sequential discovery
- Multi-stage puzzles where tools or parts are discovered and used later within the same puzzle.
- Sequential movement
- Requires a set order of moves; wrong turns may require full reset.
- Sliding block puzzle
- Move rectangular or shaped pieces within a boundary to free a target piece.
- Soma Cube
- Classic 7-piece 3D assembly creating a cube and many shapes. Browse Soma Cube.
- Stewart Coffin
- Influential designer of wooden interlocking and coordinate motion puzzles; widely referenced by collectors and makers.
T
- Tangram
- Ancient 7-piece dissection forming silhouettes and geometry lessons. See teaching resources at NRICH.
- Topology puzzle
- Challenges based on properties preserved by stretching or bending (no cutting), often with rope or bands.
- Tower of Hanoi
- Move a stack across pegs using minimal moves; illustrates recursion. Background: Britannica.
- Trick bolt
- Bolt or fastener that opens by a hidden action. See also bolt puzzle.
- Trick lock
- Lock that opens via concealed steps or tools, not a standard key turn.
U
- Undo move
- Critical backstep that enables progress; experienced solvers plan undo points deliberately.
- Unidirectional key
- A key piece that exits only in one direction or along one axis due to internal blocking.
- Utility challenge
- Puzzles with practical outcomes (e.g., ciphers for messages) as part of the fun and learning.
V
- Vanish puzzle
- Dissection illusion where a piece seems to appear or disappear when rearranged (missing square paradox).
- Volumetric packing
- 3D packing into a box or cavity; solutions weigh rotation, interference, and coordinate motion.
- Void cube
- A twisty cube variant without center pieces; parity and orientation feel change accordingly.
W
- Wire puzzle
- Metal disentanglement forms with clever loops and traps. Explore wire puzzles.
- Word Wheel
- Rotating rings generate words or ciphers. See: Word Wheel.
- Word ladder
- Transform one word into another by changing one letter at a time with valid intermediates.
- WCA
- Governing body for twisty puzzle competitions: World Cube Association.
X
- XOR parity
- Bitwise logic idea used informally to explain parity states and constraints in twisty or sliding puzzles.
- X-Cube (twisty variant)
- Layered twisty cube variant with extended axis behavior; example of combination puzzle diversity.
Y
- Yggdrasil Cipher Wheel
- Creative Crafthouse cipher tool with Norse theme; great for escape rooms. Browse: Yggdrasil Cipher Wheel.
- Yield move
- A short-term sacrifice that unlocks long-term progress in sequential or interlocking puzzles.
Z
- Zebra puzzle
- Also called Einstein's riddle; logic grid deduction with unique solution. See Britannica overview.
- Zig-zag burr
- Burr family variant with characteristic angled or zig-zag notches producing novel interlocks.
FAQ
What is the difference between a mechanical puzzle and a brain teaser?
Mechanical puzzles are physical objects solved by manipulation and spatial reasoning. Brain teaser is a broader term that includes mechanical challenges plus logic, word, and riddle-based puzzles.
What are good starter mechanical puzzles for adults?
Try classic interlocking or frame-and-packing designs, or browse our curated Popular Puzzles and Games. For gift shopping by interest or occasion, visit the Puzzle and Game Gift Center.
Where can I learn more about puzzle history and theory?
Explore the Strong Museum of Play, MoMath, NRICH, and Britannica.
Do these terms help with escape room design?
Yes. Knowing mechanisms like sequential discovery, hidden mechanisms, and cipher wheels helps build fair, delightful experiences. See our search results for cipher wheels and key mazes.
Missing a term or want examples for a specific mechanic? Comment below and we will expand our A-Z guide to puzzler's lexicon.