Jigsaw Puzzle Terminology

Death by Lemming:  When you go to pick up a piece from the edge of the table and accidentally knock it off.

PuzzleSaurus [puhz-uhl-sawr-uhs]:  a light-hearted reference guide describing the terminology used in assembling jigsaw puzzles.

Each of the terms came to mind while assembling jigsaw puzzles. Most are common terms you'll recognize, but they have been given new meanings related to jigsaw puzzles.

Some will make you smile because they happen to you all the time; others will get you thinking, or perhaps shaking your head or rolling your eyes.

I hope you enjoy these terms as much as I do.

Peter Christensen
Vancouver, WA

The Puzzle Table

Parade Grounds

The area of the table where the puzzle is being assembled.


The collection of pieces that have not yet been assembled in the Parade Grounds.

Pre-Assembly Area is a politically correct term used in place of Stockyard by vegans and members of PETA.


The other side of the table.


Lower back or neck strain resulting from leaning over the puzzle table.

Laying Out the Puzzle

Cow Tipping

Turning the upside-down pieces right side up.

Natural Selection

Setting aside the edge pieces.


When laying out the puzzle you find all of the edge pieces.

A Bogey is when you find all but one of the edge pieces; Double Bogey for two, and so on.


Sliding pieces together and pushing them into the Stockyard.


Herding the pieces in a thinned-out Stockyard into a tighter group.

The obvious advantage of this practice is that with the pieces closer together they will be easier to scan. However, it may also be argued that with the pieces closer together it will be easier to miss the piece you are looking for.

The International Society of Jigsaw Puzzle Hobbyists will address this topic in a panel discussion titled A Statistical Analysis of the Benefits of Rounding-Up at its 37th annual symposium in Z├╝rich, summer 2020.

Finding the Pieces


Looking over the Stockyard for particular pieces.


When you normally scan the Stockyard horizontally, but try scanning it vertically after failing to find a particular piece; or vice versa.

Cross-Hatching is a variation of the term Double-Crossing. Used by artists and illustrators, cross-hatching refers to the drawing of an intersecting series of parallel lines.

Cross-Thatching is a regional variation of the term Cross-Hatching, popular in the British Isles. In roofing, cross-thatching is a method of laying the foundation of a thatch roof.

Selective Vision

We use selective hearing when we talk with someone in a noisy crowd or someone asks us to take out the trash; we use selective vision scanning the Stockyard. We pass right over the most obvious pieces when we aren't looking for them, then they jump out at us when we are.

Gold Strike

When you thought you found all the pieces to complete an area or object of the puzzle, but came up short and on re-scanning the Stockyard find a number of them in close proximity.


Spotting a piece in the Stockyard that you do not want at the time, you convince yourself that you will remember where it is when you want it later.


Picking out pieces that attract you for whatever reason when you aren't working on a particular area of the puzzle.

Most Wanted List

A mental list of pieces you looked for and couldn't find. You've moved on, but keep the list in the back of your mind as you continue to work on the puzzle.

Doubting Thomas

You, when you're starting to think the piece you're looking for was missing when you opened the box, or your dog ate it. In most cases, it turns out to be a Misnomer.

Storing the Pieces


Storing pieces of an area or object that you aren't currently working on in piles for future use


Similar to Piling, except that the pieces are carefully stacked pancake-style in stacks often reaching great heights.

A Piling or Stacking that is concealing pieces that belong to an area you are currently working on is called an Infringement.


When you return a piece to the Stockyard that didn't belong in a Piling or Stacking.


Sorting pieces by color, shape, or any other distinguishing characteristic that makes one piece different from the others.


Vast blue skies, huge green lawns, endless walls of brick, piece after piece they all look the same!

Assembling the Puzzle


Shifting Clones around until you find where they fit.


Describes how you feel about the progress you are making when Shapeshifting.


An emotionally stimulating occasion when two blocks of assembled pieces are joined together.


Just as when two tectonic plates of the earth's crust push together and one rises over the other, so it is when Marrying two blocks of assembled puzzle pieces. The threat of earthquakes and tsunamis can be minimized by carefully raising then lowering one block of assembled pieces down to interlock with the other.

Spontaneous Combustion

When you have placed a great number of pieces in the area where they belong, but none connect. Then finally one does, and it leads to another and another until most all connect.

Critical Mass

The state preceding a Spontaneous Combustion, which may have a negative impact on mental and emotional stability.

Chiropractic Adjustment

An adjustment made to the alignment of a partially assembled puzzle so that the pieces fit together properly.


When you go to place a piece and connect it to another loose piece, and find that it connects to not one but two loose pieces already on the table.


Assembling the outer pieces of an area containing similar pieces, like those of a brick wall or green lawn. The outer pieces are easier to identify as they contain a partial image of something on the perimeter, and assembling them first reduces the number of similar pieces belonging to the area being assembled.

Black Ops

Working late into the night with complete disregard for the desire to behave in a sane manner or show consideration for those who are trying to sleep.

Global Positioning System (GPS)

Just as your smartphone or automobile can determine your position based on your location relative to satellites, you can determine the position to place a puzzle piece based on its location relative to the edge pieces in an assembled border.

Flying Blind

Assembling the puzzle without looking at the photo on the box, a technique many reserve for only the last pieces.

Note:  The photo was a Halloween gag that went viral.

Palm Reading

When you have so few pieces left that you have to search to find where pieces are missing, it's easier to feel for them with your hand than to look for them. Also used to confirm that areas of the puzzle are complete so that you can set the box on them for easier viewing.


Turning a puzzle board around to work on the top of the puzzle without having to move to the other side of the table.

Lost and Found

Amelia Earhart

A piece that went missing, and you're determined to keep looking till you find it.

Missing Link

A border piece missed when setting out the puzzle, which ended up in the Stockyard with all the other pieces. Note that these are most often pieces that didn't require Cow Tipping, which calls attention to border pieces.


A piece that stuck to your hand or arm when you leaned over the table.

Hiding in Plain Sight

A piece that's sitting on top of an assembled area of the puzzle that you don't know is there and keep passing over.

Stooping to a New Low

Bending down so that your eyes are level with the table to look for pieces Hiding in Plain Sight.

Lost Child

When picking up a piece you were looking for, you grab the wrong one. After looking away you realize your mistake and frantically return to the Stockyard trying to remember where you last visited.

Black Hole

A single "hole" in a large area of the puzzle that you thought you had completed long ago. You've been baffled that you haven't been able to find a place for the piece that goes in it. A Black Hole my be located through Palm Reading.

Stray Cat

A piece that doesn't belong to the puzzle you are working on, and you don't know where it does belong.

Island of Misfit Toys

A collection of pieces that you picked up because they looked like they'd be easy to place, but you can't find a home for them.


A piece you can't fit into the area you are working on and eventually realize belongs in another, similar-looking area of the puzzle.



Pieces found locked together when setting out the puzzle. Purists consider accepting Temptations highly inappropriate and immediately separate the pieces.

Dog Bone

A piece that fell on the floor and was chewed on by your dog.

And Dog Food, of course, is a piece that fell on the floor and was eaten by your dog!

Cat Tails

"Knobs" that have been bent upward and won't lie flat no matter how long and hard you press on them.

Split Ends

"Knobs" where the surface of the puzzle has separated from the backing. The backing itself may also be split into multiple layers.

Those who only do a puzzle once may not realize the damage that is done by folding a puzzle to break it up. Split Ends may be repaired by lightly but thoroughly dampening both sides of a split with water from the end of a toothpick and pressing the piece flat overnight. A minuscule amount of glue will ensure that it stays together.

Loosey Goosey

Describes puzzles that fit so loosely that they come apart when you don't want them to.

Thin Ice describes the worst of the Loosey Goosey. They fall apart when you look at them!

Tighty Whities

Describes puzzles that fit so tightly that you have to push each piece down firmly, and it takes an inordinate amount of time to take them apart without damaging them (see Cat Tails and Spit Ends).

Puzzle Dust

It comes in the box. Some puzzles come with none, some come with a lot, and some are "the gift that keeps on giving."

Technical Difficulties

Wrong Way

A border piece, which you believe to be missing, that has been placed in the border in the wrong position.


Correcting a Wrong Way, often resulting in a feeling of euphoria.


A piece that, when you finally find it after an exhaustive search, doesn't look like you thought it would.


When the shape of a piece coincidentally follows the edge of an object in the puzzle image so that the adjoining piece is different in appearance, often leading to a Misnomer.

USB Flash Drive aka Memory Stick or Thumb Drive

A piece that doesn't quite fit until you flip it around 180 degrees.


A piece that has a distinct appearance, and yet you can't find where it goes so you set it aside knowing it will "come back" later.

Hidden Treasure

Pieces in areas that are obscured on the box top by text or graphics.

Northern Lights

Reflections on the surface of puzzle pieces that make them difficult to see.

Double Trouble

A piece doesn't fall out of the die in the manufacturing process, resulting in a puzzle with a missing piece. But it falls out in the manufacturing of the next puzzle, resulting in a puzzle with an extra piece.

Death by Lemming

When you go to pick up a piece from the edge of the table and accidentally knock it off.

The Games People Play

Puzzle Support Animal

A dog, cat, or other species who provide unquestioning support as you assemble puzzles for long hours and late nights while humans only ridicule.

You can learn the difference between the other types of support animals here:

Service, Emotional Support and Therapy Animals


You, when you aren't following your rules for assembling puzzles.


One who doesn't follow any rules for assembling puzzles.

Fleeting Glance

When you find a piece and you know where it goes, you only glance as you place it. You have already moved on to find the next piece, and only when you complete a section of the puzzle do you stop to admire your work.

Just Five More Minutes!

A catch-all phrase used in response to those summoning you away form the puzzle table, frequently issued in conjunction with a hand signal thrust in the direction of those guilty of the offense.

Last Call

You pick up a few more pieces, promising yourself they will be the last as you need to tend to other business or get to bed.

And so it goes with one Last Call after another until you finally achieve a Final Call, i.e., a successful Last Call.

Curtain Call

Your puzzle is complete, and you enjoy the tactile sensation of running your fingers across its surface.

An Encore is any Curtain Call other than the first.


It's Thanksgiving, and as part of the traditional family gathering, everyone is working on a puzzle together. The puzzle is almost complete, and someone — it happens every year — secretly holds a single piece so they can be the one to place the last piece and complete the puzzle.


A puzzle assembled from the pieces of two or more puzzles manufactured with the same die or cut pattern, creating a unique, new image.

You can view and purchase this and other works by Tim Klein at Puzzle Montage Art by Tim Klein.

Comfort Food

An old puzzle that brings you the comfort of a good friend.

Feeding the Habit

Puzzle Addict

Needing a puzzle fix, you begin late-night searches of marketplace websites. You visit all the thrift stores within driving distance, and hit the brakes at the glimpse of a Garage Sale sign.

After "the buy" is complete, reality sets in and you wonder why you now have huge boxes filled with puzzles of images you don't like made by manufacturers you don't like. The shame sets in, then dissipates as rapidly as you begin to plot your next offensive.


Those of us who collect more puzzles than we'll ever be able to assemble.

Bead Buy

Purchasing a great quantity of puzzles for next to nothing via a thrift store or on-line marketplace. The term references the 1626 purchase of Manhattan Island from Native Americans in trade for beads and other trinkets valued at $24.

Reasonable Doubt

The feeling you have, or should have, when you find a very desirable puzzle for sale on eBay at a very reasonable price, but the seller's note reads: "I was told it is complete, but I am not a puzzler so am selling it as is."