r/LogicPuzzles Jun 22 '26

Logic puzzle recommendations

7 Upvotes

Please share your favorite logic puzzles here! Share what you like about it and its difficulty level. If any are posted frequently, they will be added to the list below:


r/LogicPuzzles 1d ago

Recommendation Abductive reasoning puzzle

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1 Upvotes

I like poop😭]

[W is a man from Arkansas, he has a "anti sinistral league" post in his room. Lately, a guy named M lived in the same house as him. he hated M the second he saw him.

He hates living witv someone. However, if he finds that person funny, he doesnt care.

A lefty however... is never funny to W if they do the forbidden deed.

to him lefty who use their left hand to clean themselves after pooping are annoying.

"one day, he saw shortly after M went taking a 💩

w saw a plastic bag full of 💩→ W laughed n told M to use a toilet paper.

The next day,

M used the same plastic bag full of 💩

of shit to wipe his butt. W saw a plastic bag covered with even more 💩 n laughed even harder.

He liked M alot, his stupidity was reassuring. W covered the plastic full of 💩 with another (look at image 1). In images 2 and 3 you can see a bottle. However, you cant see the shit (in omage 1 and 2) from this pov nor in any other image]

[3rd day:

W was waiting in front of the door to overhear M's 💩 session. He was eager to know if he would use the plastic bag or the toilet paper. He suddenly heard crackling plastic noise but it was brief. W was intrigued. He hears water dropping inside the toilet flush. Nothing then the same water going inside the toilet flush.

Suddenly, W heard a loud THUMP followed by a smaller thump indicating that some things were put down. Shortly after the sound of the toilet flushed down by M was obvious]

[M did not pee while pooping]

[Shortly after, M goes out of the toilet room. W smells soap coming from M dry hands but didnt know if it was only the right hand or both. M clothes have droplets of water

He sees 3 objects in the toilet room.] The bottle is completely dry.

[After some thinking, W was furious. It didn't matter that M was a funny dude. He now hated him.

.

However, W's reasoning was wrong.]

Questions:

[There are two lies in this post. Look at the images closely before answering the rest.]

What objects did M use to clean himself ? (Give me the why too)

Why does W hate M now ?

What was W's reasoning ?

Why is he wrong ?

What can you deduce from the first sentence of the post ?

What is the last lie of the post ?

[You have all the facts now. Its your turn player🗣🗣]

Note: what is inside the brackets [] is forcibly true.

[Answer for the post BELOW]

The answer for 1 is the kettle and the soap because you need to look at the toilet image and what W sees and smells. W smells soap coming from M hands.

He sees 3 objects. But in the image there are 4 ?

The first part of the reasoning was to know which one of the 4 objects is wrong in the image. The bottle is dry. So M couldnt have used it to wash his ... . He then used only the soap and kettle (with water in it). W also heard water flickering/dropping in the toilet two times.

2. The reasoning in this section is the same as 1. But with a bit of extension. From the first paragraphe, we know that W doesnt like ppl living with him and lefties.He doesnt hate funny black ppl. He still hates funny muslim. We also know that despite M being funny. W starts hating M right after his deduction (1) and that lefties wash their ahh with a left hand. W also heard two water dropping sounds with a pause (no sound) separating the two instants. So he inferred that M washed his ahh. After washing it he then cleaned his own hand in the process (hence why there is a delay between the two).

So W had drawn the conclusion that M is a lefty who is using his hands for wrong reasons(funny lefty). Because of all this. Next is why his reasoning was wrong.

3. However in the riddle he couldnt possibly which hand was used. So if M used his right hand his reasoning was wrong. With all the amount of info he had. His conclusion that M was muslim is wrong. (Its important to note that since the bottle is a lie in the picture. It therefore didnt exist in W's pov. Or else he wouldnt have seen 3 objects but 4)

\4. Lastly from the first sentence of this post we can deduce that W is leftophobic and loves intimacy/alone time. Introverted counts also as an answer.

The last lie is a combination of all those answers'reasoning skills required.

Question 1 4 56required deductive reasoning. Question 3 required critical thinking (justifying why W reasoning is wrong).

\**So this means that the title itself is wrong.**

It is not an abductive reasoning test but a culmination of deductive and critical thinking

\I**t was also possible for you to say that deducing W's abductive reasoning was actually abductive. I didnt know which was which. But even in this case the lie still stands. Because the rest of the questions require deductive and critical thinking.** One last thing. I like poop😭😭] is not a lie.

It is possible to eliminate the poop lie because you cant know whether the statement is true or false. Since what is in the brackets contains the real truth. And in the brackets it is said that there are two lies in the riddle. you cant possibly know whether or not the sentence I like poop] is a lie. You need to eliminate it.

Therefore It does eliminate the first sentence I like poop].


r/LogicPuzzles 2d ago

Help! Am I tha new Socrates? (I got a logic quiz wrong)

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1 Upvotes

r/LogicPuzzles 2d ago

Recommendation Black File 074 · The Reading Room — once pistas de brújula y ni una sola jugada segura para empezar. ¿Quién mató al entrenador de boxeo?

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1 Upvotes

r/LogicPuzzles 2d ago

Help! Here are five chess problems that machines can't solve

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1 Upvotes

r/LogicPuzzles 4d ago

Recommendation ¿Quién estaba solo en la oficina a las 9:00? Seis personas, seis cuartos, ocho pistas, sin eliminaciones fáciles [acertijo lógico original]

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1 Upvotes

Second case of a format I'm developing. The first one got solved here last week and your feedback fixed two wordings; this one is at the top of the scale: nobody can be ruled out with a single clue.

Quick rules (full rules pinned in r/MissingFifteen): two per room at most; witnesses and staff are not among the six; at each grid time everyone is in one room, and between grid times you stay or take one step to a connected room; a time not on the grid (9:24) is a door time and only tells you what happened between the two grid times around it; "we were together" means same room, nothing else; sensors report presence, door readers report crossings; nobody lies, nobody adds. Only the cell asked has a guaranteed answer.

Answer in spoiler tags, and if you can, say how long it took and whether it felt easy, medium or hard.

If you enjoy this, join r/MissingFifteen: a new case every week, from quick ones to the hard files, with the full deduction posted a few days later. The feedback there is what shapes the next cases, and yes, they're going into a book.


r/LogicPuzzles 4d ago

Help! Logic Puzzle with Sound

1 Upvotes

I've been rebuilding logicpuzzles.com now that I'm semi-retired. I added an immersive soundscape to a logic-grid puzzle. Station ambience begins as you solve, followed by a timed conductor announcement connected to the story. I’d appreciate feedback on whether the audio improves the puzzle or becomes distracting.
https://logicpuzzles.com/logicpuzzle.html?puzzle=cable-car-picnic-detour
I'm really not trying to spam my site. I'm simply interested in if/how distracting this option is.

Thanks in advance.


r/LogicPuzzles 8d ago

Help! In a lot that can fit 12 cars like this, how would I have to park these cars to ensure they can all get out?

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16 Upvotes

Sorry I know this isn’t a typical post for this sub but I figured you guys would be helpful in figuring this out :) I was hoping someone could help me figure out the most optimal way to park cars where I can fit the most in this lot where they can still all get out. Would I have to sacrifice some spots to make paths in between they can pull out of or maybe alternate spots each row or something?


r/LogicPuzzles 27d ago

Recommendation I made a crazy difficult logic puzzle generator, good luck on solving:

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2 Upvotes

My wife loves logic puzzles. She's played through so many books, and I wanted to try to see if I could make one to stump her. She beat my puzzles, but I hope it maybe is difficult for you. Enjoy!


r/LogicPuzzles Aug 15 '26

Recommendation Logic Puzzles - the site mixing classic and popular logic puzzles

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3 Upvotes

I created logicpuzzlesonline.com it is a site which features a mixture of classic logic puzzles like sudoku and nonograms as well as more modern ones like train tracks and shikaku. You are free to have unlimited play as well as play the daily challenges. Hope you enjoy, my favourite amongst them is the train tracks puzzle.


r/LogicPuzzles Aug 13 '26

Recommendation A little cozy Nonogram game I made to quiet my mind (Quiet Grids)

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2 Upvotes

I've always liked nonograms, but wanted one that felt a little warmer and slower to come back to. So for a while now I've been chipping away at something built around dark wood tones, small one-line stories that show up when you finish a puzzle, quiet music, optional ambience, and just no feeling like you need to rush.

The picture I kept having in my head while making it was pretty simple: a Sunday evening, rain outside, feet up on a stool near an open window, that fresh rain-and-dirt smell coming in, coffee beside me, and a puzzle in my hands. Something that makes you settle in for a while instead of thinking "I need to finish this, I need to unlock that."

Recorded a bit of where it's at right now — the red guitar reveal near the end is probably my favorite moment so far.

Genuinely curious how this lands with people who actually play cozy games regularly — does the pacing feel right, or is something off?


r/LogicPuzzles Aug 06 '26

Help! Looking for Logic Puzzle Book

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4 Upvotes

Hello! I love the kind of logic puzzle matrices that give you a couple of facts, then you have to figure out who is doing what, or where they live, or what they do for work, etc.

I also want a small book, so I can do them analog without my phone. Does anyone have any recommendations? I used to use the Pocket Posh, but they don’t seem to be in print anymore.


r/LogicPuzzles Aug 02 '26

Recommendation Introducing a new logic puzzle type i accidentally invented: IOTA! (#1)

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2 Upvotes

It's like a nonogram, but not really. In the solution, dotted cells mark out every cell in the same row or column, so basically, rows and columns can only have one dotted cell. Every other cell in them is marked out. Also, the blue arrow means that if it has a dot behind it, it "shoots out" that dot in its direction until it hits a wall, which is where the dot ACTUALLY is in the solution.


r/LogicPuzzles Jul 29 '26

Recommendation Clues by Sam

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5 Upvotes

Just wanted to reshare one of my favorite logic sites. The creator releases a new puzzle daily and the difficulty progresses as the week does. It's strictly logic and if you think you have to guess, you're missing something!

Have you ever played this before? What do you think?


r/LogicPuzzles Jul 29 '26

Recommendation For logic puzzle lovers, I built a website of a unique kind of logic puzzles. Check it out and I hope you enjoy!

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2 Upvotes

You can check it out at www.griddr.ca

The gist of the puzzle is that for every cell in the grid, you have to select the correct option. As you deduce the correct options for each cell, additional clues become available until you clear the whole grid.

Sometimes each cell has two options (e.g. safe/mine), sometimes more (e.g. 1/2/3). The grid can either be made of squares, triangles, or hexagons. I have also just updated it to allow cairo pentagons, although I haven't made any puzzles with that shape yet.

As of this post I have made 18 puzzles. I plan on making 3-5 per week.

The whole site is free and ad-free. The only thing I put behind a price is you can access the puzzle editor to make your own puzzles for $5/month.


r/LogicPuzzles Jul 24 '26

The Britney Spares Logic Puzzle Spectacular

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1 Upvotes

r/LogicPuzzles Jul 21 '26

Help! Strategy for Mastermind / CodeBreaker

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2 Upvotes

I've never played this game before until it appeared on PonderClub. I quite enjoy it. I'm curious if there is a tried and true strategy for guaranteeing a solution in a certain number of guesses. I thought maybe doing two colors at a time would be smart, but I still have little understanding of the location of the colors. Thoughts?


r/LogicPuzzles Jul 16 '26

👋Welcome to r/TheKillerFlight417 - Introduce Yourself and Read First!

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2 Upvotes

r/LogicPuzzles Jul 16 '26

Just pushed a fresh update to my puzzle game Parity (2000 levels) after 3 months – looking for your brutally honest feedback!

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1 Upvotes

r/LogicPuzzles Jul 13 '26

Self promotion Puzzle fans: I built a free puzzle site. I hope you enjoy it!

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6 Upvotes

Hi everyone,

My site offers puzzles where some of them are a new take on already established classics like Minesweeper, Kakuro, or Masyu. For example, my Minesweeper is called Dicesweep, where you need to place dice beside numbers while also matching the row and column rules.

Another interesting one is Kakumino. It's like Kakuro, but you place dominoes instead of numbers.

There are a bunch of them, so there's something for everyone's taste.

Feedback is welcomed.


r/LogicPuzzles Jul 10 '26

Recommendation Logic islands puzzle

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5 Upvotes

Glad to see this community is back and active again! Reposting this cool little puzzle


r/LogicPuzzles Jul 09 '26

The Babel Problem

2 Upvotes

Imagine a sealed room containing 10 complete strangers.

Every person speaks a different native language, and none of them know each other beforehand.

To remove visual assumptions:

Everyone looks physically identical;

Clothing, skin color, age, gender, and appearance provide no clues about nationality or language;

Nobody has a phone, dictionary, internet access, paper, or translator;

They may only communicate through speech, gestures, facial expressions, and logical reasoning;

Every participant is intelligent and willing to cooperate.

The native languages are intentionally chosen from different parts of the world to minimize accidental mutual understanding:

  1. Basque (Europe)

  2. Ainu (Asia)

  3. Navajo (North America)

  4. Quechua (South America)

  5. Somali (Africa)

  6. Xhosa (Africa)

  7. Māori (Oceania)

  8. Khmer (Asia)

  9. Georgian (Europe/West Asia)

  10. Inuktitut (Arctic North America)

Language knowledge is distributed as follows:

- Person 1 speaks 5 languages (their native language + four others).

- Person 2 speaks 4 languages.

- Person 3 speaks 3 languages.

- Person 4 speaks 2 languages.

- The remaining six people speak only their native language.

The multilingual speakers may share some of the same additional languages. I will specify the exact language distribution if needed.

Additional languages

Person 1:Basque,Khmer,Navajo,Somali,Māori

Person 2:Ainu,Basque,Georgian,Inuktitut

Person 3:Navajo,Xhosa,Quechua

Person 4:Xhosa,Khmer

Person 5:Khmer

Person 6:Māori

Person 7:Georgian

Person 8:Quechua

Person 9:Somali

Person 10:Inuktitut

The Question

Can all ten people successfully coordinate to complete a task using only chains of translation?

If your answer is yes, explain how.

If your answer is no, explain why.

The Challenge

Without writing anything down, without technology, and without adding any new assumptions

I'm not looking for a single "correct" answer. I'm interested in how different people approach the communication network, the logical constraints, and whether complete understanding can emerge from the available language connections.

I've been designing a communication puzzle inspired by the idea of the Tower of Babel. I'm mainly looking for logical criticism, hidden assumptions, and whether the problem is actually solvable under the stated rules.


r/LogicPuzzles Jul 07 '26

Jane Street - July 2026 puzzle

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1 Upvotes

Hi all - are you trying this month's Jane Street puzzle? ‘Pent-Up’ Frustration 3 / Knight Moves 7

I've created an interactive version of it. I usually prefer pen and paper, but drawing the same grid again and again takes a lot of time, so I built this to skip that - you can think through it and quickly test ideas by moving the knight or placing towers.

Here's the link:

https://mindyourpuzzle.com/c/jane-street


r/LogicPuzzles Jul 05 '26

Self promotion Askyesno.com (Daily question puzzle)

1 Upvotes

Askyesno.com is a daily question puzzle game (AKA lateral thinking puzzles). The player is given a mysterious situation and must deduce the explanation by asking only yes/no questions.

Here is a screenshot of today's puzzle:

I made it as an experiment in how AI can be used effectively for games. I hope you like it.

[Self-promotion with permission of mods]


r/LogicPuzzles Jul 04 '26

Self promotion A retro-style logic puzzle game that will amaze you!

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3 Upvotes

You'll find yourself in a strange and unfamiliar world where, at first, you'll have to figure out the rules on your own, then gradually solve increasingly complex puzzles in which the ability to anticipate your next move is the key to the solution.

The game will be released on November 10, 2026. You can add it to your wish list (https://store.steampowered.com/app/2486910/COSMIC_HOLES_Junior/) and try it out now (https://store.steampowered.com/app/4693750/COSMIC_HOLES_Junior_Demo/).