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66 votes
Accepted

I have forgotten what the puzzle was

I am ashamed this came to me so quickly.
Neil W's user avatar
  • 2,288
15 votes

Looking to find the name and objective of this puzzle

Looks very similar to Simon Tatham's "Net". The goal is to get everything connected together; the operation you're allowed to do is to rotate each square by any multiple of 90 degrees.
Gareth McCaughan's user avatar
14 votes
Accepted

Single letter chemical elements on a 2x2 grid

The answer is: First row: Second row: The elements are:
GoodDeeds's user avatar
  • 913
13 votes

A riddle in James Still's "River of Earth"

My guess would be Explanation: First green and then yeller, (sic. yellow) All guts and no tallow.
gstats's user avatar
  • 1,110
13 votes

Puzzle similar to 15-puzzle but more moveable pieces?

As answered by @BeastlyGerbil, you have the world of twisty puzzles. Here in the Twisty Puzzle Museum you can find over 5,000 of these kind of puzzles, and here is my personal collection of currently ...
Kevin Cruijssen's user avatar
13 votes
Accepted

14 piece wooden cube puzzle

This type of puzzle is called a burr puzzle. This particular one was designed by Bill Cutler, and is called Wausau '83. It is produced by Jerry McFarland, and available from Bill himself, or from Mr ...
Jaap Scherphuis's user avatar
12 votes

Puzzle similar to 15-puzzle but more moveable pieces?

Kevin Cruijssen gives some good examples. You might also want to consider multiple layers as a part of the puzzle, which allows you to have additional constraints, either visible or hidden. For ...
bkuehner's user avatar
  • 456
11 votes
Accepted

What is the name of AB×B×A=BBB puzzles?

This is a type of puzzle called a "cryptarithm" or an "alphametic". We have many examples of this type of puzzle under the alphametic tag.
Deusovi's user avatar
  • 148k
11 votes
Accepted

Twisty puzzle composed of hexagonal prisms, with As and diamonds

It was first released in June 2004 by Mefferts under the name Jackpot, and later it was renamed Platypus, and after that the New Generation Puzzle. It probably was sold under other names as well. See ...
Jaap Scherphuis's user avatar
10 votes
Accepted

The case of the world’s easiest puzzles

Possible answers for the non starred ones: a. You b. So c. So d. e. f So g So Now for the starred ones: h It was actually: i It was actually: j Or (thanks @Silenus) It was ...
Beastly Gerbil's user avatar
10 votes

What kind of puzzle is this?

I've seen this be called "Mazes With Rules" or "Logic Mazes" see: https://www.logicmazes.com/dec99.html for Robert Abbot's take on the term, and if you want more of them he's ...
Spencer Fleming's user avatar
9 votes

What is the name of this mechanical puzzle with two G-like hooks interlocked?

After much scrolling, I found this puzzle on Rob's puzzle page, which lists hundreds of entanglement puzzles. It's a great page, definitely consider checking it out. This puzzle is from the (now ...
isaacg's user avatar
  • 7,158
8 votes

Puzzle similar to 15-puzzle but more moveable pieces?

I'm sure you know of the Rubik's Cube. That has got multiple movable pieces. If you want something with a lot more movable pieces you could try some of the family members of the Rubik's Cube. For ...
Beastly Gerbil's user avatar
8 votes

3-sided pyramid with 9 red and white triangular pieces on each side

The Great Pyramid by Eliot Inventions Ltd I do not know whether the competition was won. The prize was not a million pounds - you may be confusing this with the Eternity puzzle that had such a prize ...
Jaap Scherphuis's user avatar
8 votes

Calculating with Symbols

These are usually called alphametics, but these usually have letters instead of numbers. A common example is below: \begin{align} &SEND\\ +&MORE\\\hline M&ONEY \end{align} The equivalent ...
boboquack's user avatar
  • 22k
8 votes
Accepted

What is this puzzle called? Have you seen it before?

Every instance of this type mentioned here, including the USAMTS problem and your screenshot, was written by me. You can also see my contributions GM puzzles, which is the best place to go if you're ...
Palmer Mebane's user avatar
8 votes

Mechanical puzzle ID: Ring, barbell, and four-holed panel

I haven't seen this particular puzzle before, but this seems to work: (Edit note: my earlier answer went through an extra loop, which turned the whole method into a complicated no-op. This new one ...
Bass's user avatar
  • 77.9k
8 votes
Accepted

Metal entanglement puzzle with an S-shaped piece, chain, and rings

I think the objective is to separate the small ring from the chain. Also, it seems the chain goes around the S-shaped part twice. This procedure removes one of those loops, so you'll want to repeat it ...
Bass's user avatar
  • 77.9k
8 votes
Accepted

What is the name & solution for this 33-piece 3D wooden puzzle?

This appears to be the Hercules burr puzzle. (It may also be known as Diamond #33; I can't tell if theirs is the same, because they claim to have 9 different shapes but they also don't cut the corners....
Deusovi's user avatar
  • 148k
7 votes

The case of the world’s easiest puzzles

OK. Let's get the ball rolling. This was too fun to not come up with a fun alternative answer. So let's pretend I'm a contestant for Jeopardy. Me: "Alex, I'll pick puzzle identification for 1000". ...
Marius's user avatar
  • 18.2k
7 votes

The case of the world’s easiest puzzles

a. b. d. e. g. h. (but not e.) i. j.
KeyboardWielder's user avatar
7 votes
Accepted

Can anyone solve this?

which is a typo, should be
humfuzz's user avatar
  • 1,201
7 votes
Accepted

Unknown 5-pieces cube puzzle - help recognize

I haven't seen this puzzle before. I cannot tell you the name or who produced it. But assuming your goal is to reassemble it, I can help. It seems the problem is to fit all 5 pieces in a 4x4x4 ...
Florian F's user avatar
  • 30.8k
7 votes
Accepted

A Twisty Puzzle my friend barely remembers

It is called Gear Shift: It was invented by Oskar van Deventer, and produced by Meffert. The Skewb Shift was a later design inspired by this one. Note however that the Gear shift can pull apart ...
Jaap Scherphuis's user avatar
7 votes
Accepted

I need help with a 12 piece wooden puzzle

Using Burr Tools I've made an image of the solution steps.
Jaap Scherphuis's user avatar
6 votes
Accepted

Cross between a crossword and sudoku. What's it called?

You're looking for the gryptic!
Deusovi's user avatar
  • 148k
6 votes

Any ideas how to solve this wooden puzzle? (And anyone happen to know what it's called?)

NOTE: Not really an answer, but more like bits and pieces of information. I'm unable to find the name, nor a tutorial/solution for it. On websites like eBay, Amazon, and AliExpress it doesn't really ...
Kevin Cruijssen's user avatar
6 votes
Accepted

Need help to decipher this encrypted text

This is a The message is How I found the key
Excited Raichu's user avatar
6 votes
Accepted

Six inch, clear plastic binary counting puzzle

Is it Magnif's Brain puzzle? And video (thanks to AK19!)
Carley's user avatar
  • 512

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