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This tag is for questions where the answerer must identify a puzzle type based on deliberately limited information about its nature, such as notes made in the course of solving it. For questions where the asker genuinely needs to know the puzzle type, use the [puzzle-identification] tag instead.

11
votes
2answers
419 views

Procedurally generated riddles

Last morning, my AI friend wrote me a letter. hello thomas. how are you? i am good. you said you like riddles so I made some riddles for you. please enjoy. After some time, though I enjoyed the ...
67
votes
2answers
3k views

My God, it's full of stars!

An entry in Fortnightly Topic Challenge #32: Grid Deduction Hybrids My dear friend, unknown to us, may have relocated again. He sent me imagery and constellation maps indicating that a distant red ...
38
votes
2answers
1k views

I am an island (ysaujdiolkiun)

An entry in Fortnightly Topic Challenge #32: Grid Deduction Hybrids I received an envelope containing two drawings and no return address. I would recognize that handwriting anywhere - my dear friend ...
51
votes
4answers
2k views

Desert Irrigation Project

An entry in Fortnightly Topic Challenge #32: Grid Deduction Hybrids My dear friend researches and designs canal irrigation systems in a remote desert. He's been missing for two weeks. Members of ...
14
votes
2answers
532 views

Trapezoids Compound Hidden Puzzle

UPDATE To refute Sconibulus's answer, I drafted a second puzzle with identical rules. 7 months ago, I released a collection of variations of an original puzzle called Trapezoids, but never mentioned ...
8
votes
3answers
461 views

Ambiguous Grids

After six to eight weeks of waiting, your Shmikoli™ Ambiguous Grid Deduction Puzzle Set has finally arrived! You tear into the box only to discover that the instructions are missing. You shouldn't ...
18
votes
2answers
1k views

Three for the price of one

While browsing through your local puzzle store, you see something you can't resist: a box which promises two grid deduction puzzles for the price of one! The vendor explains that the box contains a ...
5
votes
1answer
243 views

So why do they keep asking?

Settle down.   We are all understandably upset — once again — but this meeting is called to order.          &...
5
votes
2answers
423 views

The trunk of trivial trials

This puzzle is a knockoff of humn's The case of the world's easiest puzzles. (humn has encouraged spinoffs in a comment.) Hey be careful with that case! Even the slightest nudge, jostle, or jog, and ...
11
votes
5answers
790 views

My roommate is back add it!

My roommate's computer desk has a paper on it with these 3 weird grids and drawings. I know that he is trying to learn to write computer code and he likes making old video games as a way to learn. I'...
11
votes
4answers
1k views

A line in Connect Four

When I was young, I was playing with a friend. Of course, the topic soon turned to mathematics (as it always does), and we got into an argument over something. We went on for some time, then he got ...
10
votes
3answers
530 views

Steganographic Maze of Ciphers, Riddles and Rhyme!

Go with the flow!!! INSTRUCTIONS Done with my time on this planet, I left you with my creation. I'm hidden in two ways below, one puzzled, while the other is a direct mention. I know you will ...
5
votes
2answers
455 views

Cheating your Boss is not easy

I stole the thought reading device from Ankoganit. I have already understood how to fit it into people. And now, I have fitted it in the neck of my Boss. Now, I get to know what is going in his silly ...
29
votes
1answer
2k views

Reverse puzzling. What game is this?

I saw my friend working on making a computer game version of an old game (not traditionally a computer game) and his notepad has these strange series of numbers. What game is he working on? ...
5
votes
1answer
199 views

Jim is trying to prove he has solved the puzzle

This is an entry for the 16th Fortnightly Challenge. Jim : Bob, I have solved the puzzle !! Bob : I do not believe you, show me ! Jim : No, you have to solve it yourself. After some discussion ...
9
votes
4answers
1k views

A colleague's note

This is an entry for the 16th Fortnightly Challenge. I found this note on my colleague's desk: I am pretty sure he was solving a puzzle. Can anyone help me figure out what the puzzle was? I am ...
12
votes
2answers
560 views

A Modular History Lesson

Firstly, idea blatantly stolen from This great puzzle by Rand al'Thor I was preparing Exams for my students last night, and my wife offered to make some fun riddles to use as Extra Credit. I had five ...
2
votes
1answer
277 views

The outset of the edge of cipher

This is an entry into the 16th Fortnightly Challenge : reverse-puzzling Person 1: Look at the paper. Person 2: Yes, I see, I see, but I don't know what cipher this is. Person 1: Okay, let ...
9
votes
1answer
236 views

Hazing the new guy

Congratulations on your new job with us! You will be working with Alice on writing down details about REDACTED, the show that has those puzzles. ...
37
votes
2answers
1k views

Reassemble the riddles!

I'd just finished writing four short 4-line riddles, painstakingly making sure each line was correct, when a wind caught the slips of paper I'd been using to write on and blew them all over the floor. ...
7
votes
2answers
382 views

Five Closely Related Puzzles

Two friends, Stewart and Ian, sat down to discuss what they had been working on, recently, in preparation for the upcoming puzzling competition in their school. Today's discussion centred on five ...
5
votes
3answers
217 views

What are Jim and Bob trying to solve?

Jim is so happy after finding three solutions to a problem, then he texts Bob this : Bob, I have found 3 solutions for your problem. I do not know whether these three are the only solutions or ...
4
votes
5answers
1k views

What are they trying to solve?

I was on the the train once, bored as hell (because trains in Romania are really slow) and at one point I hear 2 guys behind me, probably as bored as I was, talking about puzzles. And I thought: "Oh! ...
18
votes
2answers
446 views

My colleague's search history

This is an entry into the 16th Fortnightly Challenge - reverse-puzzling I was using a colleague's computer the other day, and he had some ... unusual terms in his search history. No, not that way. ...
6
votes
1answer
174 views

The Mystery of the MathJax Lines

Observed from an old-timey spaceship1 and strewn across the Puzcle Plateau 2 lie 14 mysterious lines.          $ \rlap{\kern 0 pc\raise 0 pc\Rule{0....
9
votes
1answer
590 views

Can you steal the show?

This is an entry into the 16th Fortnightly Challenge - reverse-puzzling My friend just received a letter telling him he made it onto a really famous TV show, and he won't tell me which! All he gave ...
18
votes
1answer
1k views

What kind of puzzle is solved by these sequences of numbers?

Samantha had been fiddling with something at her desk for ages, and constantly scribbling notes on a piece of paper. When my curiosity eventually got the better of me, I wandered over to ask what she ...
15
votes
1answer
407 views

My colleague got mad!

This is an entry for the 16th Fortnightly Challenge. You won't believe what happened at work today! I was working on a new software when Robert, the colleague I work with on this, got mad in a second ...
10
votes
2answers
835 views

The wrong solution?

Alice has been trying to solve a puzzle lately, and today she sent Bob this text message: ...
12
votes
1answer
500 views

Highlighter traces on a sheet of paper

This is an entry for the 16th Fortnightly Challenge. My friend was solving a puzzle but took the puzzle with him. However, he was solving it with highlighters and they left traces on the paper below ...
14
votes
1answer
962 views

Reverse puzzling

This is an entry for the 16th Fortnightly Challenge. This is how a graphical solution may look like: What is this famous puzzle?
29
votes
2answers
1k views

Cheating is efficient, but only until you get caught!

This is an entry into the 16th Fortnightly Challenge - reverse-puzzling The Puzzleland Inc. is recruiting some fresh blood, and after some brain-bending tests, the candidates have been shortlisted to ...
7
votes
1answer
305 views

The missing page of Adrian Puzzlinger

   “Knock, knock, Adrian Puzzlinger. It’s the puzzled police. Are you home?”        “Unless I’m mistaken.” ...
13
votes
4answers
683 views

The mess of Adrian Puzzlinger

Adrian Puzzlinger has gone missing again. Even worse, for puzzle lovers, the latest puzzle under construction is a mess. The only shred of order in the chaos of Puzzlinger's puzzler parlor is this ...
8
votes
7answers
841 views

Reverse puzzling - What is my brother solving?

This puzzle is inspired by the previous reverse puzzles My brother and I love puzzles. But I know he is solving some puzzles without me. So yesterday I sneaked into his bedroom to find out what he is ...
25
votes
4answers
1k views

Reverse Puzzling 4

[This continues prior Reverse Puzzling here, here and here] George rubbed his hands together with glee. "So this is Andrea's puzzle, is it?" "Yes," I answered. "It's the first of them, anyway." "...
12
votes
1answer
394 views

The lists of Adrian Puzzlinger

Adrian Puzzlinger has gone missing again. Even worse, for puzzle lovers, the latest puzzle under construction is missing as well. The puzzle police are puzzled by an imprint of aligned lists of ...
8
votes
1answer
640 views

Reverse Puzzling 3

This is a continuation of Reverse Puzzling 2 "Okay George, let's try this one. Pretty simple." I gave George the puzzle. He picked up his marker and quickly sketched out the following. "Well... I ...
28
votes
2answers
1k views

Reverse Puzzling 2

This puzzle was inspired by Dr Xorile's first reverse puzzle! Kudos to him for coming up with such a fun format. Intrigued, I gave George yet another famous puzzle to ponder over. Once again, I was ...
43
votes
2answers
3k views

Reverse Puzzling

George is a great puzzler, so I was extremely surprised when he didn't immediately know the answer to a really famous puzzle. It's a puzzle that you probably did years ago, and have heard so often ...