Questions tagged [reverse-puzzling]

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.

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6
votes
0answers
253 views

Solution without words

Here comes a series of snapshots in the life of a worksheet that might come into play when solving a variation of a fairly-well-known numerical logic puzzle. ­ Parameters of the progenitor puzzle ...
7
votes
1answer
118 views

A Grid with some Green Cells

So a friend wanted me to try out the reverse-puzzling riddle he created. It consisted of a 4x4 grid with a digit in each cell and a single closed loop drawn along the edges of its cells. Also some of ...
21
votes
1answer
1k views

This new puzzle type needs a name {6}

I believe I have invented** a new type of puzzle... What is its name? Begin by solving the Fillomino puzzle: Rules of Fillomino (taken from Nikoli) Fill in all empty cells with numbers ...
14
votes
2answers
591 views

This new puzzle type needs a name {5}

I believe I have invented a new type of puzzle... What is its name? Colour-blind-friendly version available here. Begin by solving the 9x9 sudoku; each of the 9 symbols ...
12
votes
1answer
812 views

This new puzzle type needs a name {4}

I believe I have invented a new type of puzzle... What is its name? Begin by solving the 16x16 sudoku; each of the digits 1-16 must appear exactly once in each row, column and thick-bordered 4x4 ...
27
votes
1answer
1k views

This new puzzle type needs a name {3}

I believe I have invented** a new type of puzzle... What is its name? ** Well, 'adapted' an existing one, really... Colour-blind-friendly version available here. Those without colour-blindness ...
24
votes
4answers
1k views

Another new puzzle type needs a name

For an example of how this type of puzzle works, see here... I believe I have invented another new type of puzzle... What is its name? Colour-blind-friendly version available here. Begin by ...
77
votes
2answers
5k views

This new puzzle type needs a name

I believe I have invented a new type of puzzle... What is its name? Colour-blind-friendly version available here. Begin by solving the 16x16 sudoku; each of the digits 1-16 must appear exactly ...
7
votes
1answer
712 views

My friend is being a hypocrite

So I was having an argument with a friend and I know I'm right, but she just won't admit it and it's getting really irritating. She thinks this thing goes one way when it clearly actually goes down! ...
25
votes
2answers
3k views

Reversed Sudoku

Sudoku from Sudoku Solutions. Here's a Sudoku grid with all the obvious candidates removed. Your task is to re-supply the givens.
14
votes
6answers
458 views

Useful Aide memoire

“Well, that's all great but how do you remember it?” George asked. “Easy,” I replied pointing at a nearby board. “Just remember these words: Clue, Fox, Rain, Basket, New, Haze and Quiz, Jades, Moved, ...
9
votes
2answers
356 views

Reverse Puzzling - Curious Chess

George rubbed his hands together. "What have you got for me today?" he asked. I showed him the pieces set up on the chess board and told him the stipulation. "That's a very strange one." He said. "...
14
votes
1answer
336 views

Reverse Puzzling 5

(Continued thematically from here) "George, you know this puzzle?" I asked. "Oh yes, of course. And I much prefer this version to the French one." "Yes, it's much better." I agreed. "So you can ...
6
votes
1answer
383 views

I have a puzzle and a solution… it's the method I'm after

The cipher message is: J B A Z R X K Z N T W K O Y E Z The answer is: T O N G L A N D B R I D G E How did I (or more accurately my father) arrive at the answer?
16
votes
2answers
702 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 ...
76
votes
2answers
4k 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 ...
42
votes
2answers
2k 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 ...
52
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
734 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
546 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
251 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
484 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
883 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
671 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 ...
6
votes
2answers
490 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
216 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
593 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
291 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
251 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. ...
43
votes
2answers
2k 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
406 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
239 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! ...
19
votes
2answers
476 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
202 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
605 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 ...
19
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 ...
16
votes
1answer
459 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 ...
11
votes
2answers
859 views

The wrong solution?

Alice has been trying to solve a puzzle lately, and today she sent Bob this text message: ...
12
votes
1answer
516 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
993 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?
30
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
328 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
712 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
870 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 ...
26
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." "...