/r/puzzles

Photograph via snooOG

The place for all kinds of puzzles including puzzle games. Self-promotion is allowed in the stickied "Promo Weekly" post.


Colors

Pick a color for the header!

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Blue

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Yellow

Rules

  1. No spam. Self-promotion is allowed only in the Promo Weekly post stickied to the top of the thread. Links to apps, blogs, and most videos belong in the Promo Weekly post. Logic and/or math-based puzzles that fit a text or image format are generally allowed. Posts that make sense as a video or website link are allowed with moderator approval, so please ask us first. Generally, videos should promote discussion, and websites should provide features that are useful to solving the puzzle.

  2. Use spoiler tags when posting a hint or solution to a puzzle. Guesses must also be spoiler-tagged. Top level comments are automatically removed unless they include a spoiler tag or start with "Discussion:" or "Question:"

  3. All puzzles should be logic based. Check out /r/riddles for puzzles based on lateral thinking. Jigsaw puzzles are best suited to /r/jigsawpuzzles

  4. Use a descriptive title. Titles should be descriptive, not just "Check out this puzzle" or "Puzzles only geniuses can solve."

  5. Please do not posts puzzles from ongoing contests. If you see a riddle that's part of a contest, please report it.

  6. Credit puzzle creators. If you did not make the puzzle, please try your best to credit the original source. If you are not sure of it, or have personally received the puzzle from someone, please indicate that. This rule applies more to puzzles you found online.

How to Spoiler Tag

Apps, old.reddit.com, and the New Reddit markdown editor:
>!The princess was in another castle!!<
becomes:
The Princess was in another castle!
Template: >!The guess goes here!<

Be careful to avoid whitespace at the beginning or end of your spoiler tag. White space at >! the beginning!< or >!end !< of your spoiler will break it for users on some apps and old.reddit.com

Reddit Desktop Site (Fancypants editor/redesign):
https://i.imgur.com/SWHRR9M.jpg

Related subreddits

/r/riddles - word-based puzzles that use lateral thinking, rather than logic. Stuff like "What gets wetter as it dries?"

/r/mazes - Visual puzzles where you find a path through the, well, maze.

/r/rebus - Visual puzzles where images are strung together to make a sort of visual pun. Find the phrase the images "spell"

/r/jigsawpuzzles - Jigsaw puzzles. You have a bunch of pieces that fit together to make an image

/r/CrackTheCode - If you solve the puzzles, you could win a key to a game!

/r/puzzles

332,639 Subscribers

1

Triple tribond 1

https://preview.redd.it/xxqu2uyyiayd1.jpg?width=522&format=pjpg&auto=webp&s=13a5a8458fb6340679f79cba7ddd34714921f17a

Tribonds are 3 words with something in common. For example, "REV. / FULL / STRUCK (4 letters)" would have the answer "moon", as in Reverend Sun Myung Moon, a full moon, and moonstruck. I used to play with friends on Facebook, but with more puzzle people I'm hoping the final answer will be figured out without hints. I also hope the format makes sense. Good luck.

2 Comments
2024/11/01
13:22 UTC

12

How many triangles in this figure?

55 Comments
2024/11/01
08:30 UTC

3

Movie Leavers

Last night I went on a date to the cinema. I enjoyed the movie but apparently most people did not.

A third of the way into the movie a third of the initial audience had left.

Half way through 1 new person joined.

30mins after that 1/5th of the people there left.

50% of the remaining viewers left in the middle of the climax.

At the end of the movie I looked around and saw there was no one else in the theatre.

How many people came into the cinema in total?

34 Comments
2024/10/31
23:33 UTC

1

Would like to make some progress on the Sudoku portion of "The Graveyard of Schrödinger" by fjam

https://preview.redd.it/5cn4tbvf65yd1.png?width=499&format=png&auto=webp&s=4d9f0e864f96d8b7b5edef28de729362b10d2710

Rules (from here):

>Normal sudoku rules almost apply. Place the digits 0-9 into cells such that each digit appears once in every row, column and region. To accommodate this, one cell in each row, column and region is a Schrödinger cell, which contains two digits. In graves (cages), digits must sum to the day, month or year of the date on the grave. Digits cannot repeat within graves. Escape the graveyard by carefully plotting an orthogonally connected path between the green and red cells. The path may not cross the highest or lowest digits in a grave.

To clarify:

  1. I don't want the full solution. I only want to know what I can do to progress on the Sudoku portion on this portion. (i.e. tips/tricks to figure out the cell values (or maybe what these cell values are), maybe figuring out where a few more Schrödinger cells are located) I have also marked Schrödinger cells with dark gray and cells that must contain a max/min value in a grave with orange.

  2. I would like to say that I am the OP of the same question here on Puzzling Stack Exchange, as to not cause any confusion. If anything I'm also posting here (aside from seeing if I can get some extra help, given the difficulty of the Sudoku) just because I've been relatively inactive on Reddit lately and am trying to be somewhat more active.

0 Comments
2024/10/31
20:22 UTC

15

we cannot solve this

me and my coworker can not for the life of us solve this 9 x 9 puzzle we googled and youtube'd everything but no solutions only how to play from the company youtube, if you can please help😭

17 Comments
2024/10/31
19:06 UTC

1

This has stumped me for a week

Been stuck on this star battle puzzle for over a week and cannot for the life of me figure out what to do next. The groups of yellow blocks mean one of the two in the group must be a star, but only one. Two of the green blocks must be stars.

7 Comments
2024/10/31
14:13 UTC

17

Simple puzzles with surprising solutions?

These are my favorite kind of puzzles. Can you share some others that you know of? Two examples shown. The first is well-known, the second less so. The solutions are very surprising to most people, not what you'd expect at all!

Birthday paradox. What's the least number of people you must pick, if you pick people at random, for it to be more likely than not that at least two have the same birthday (e.g. 7 May)? >!The answer is 23, which is surprisingly small.!<

Ninety-nine puzzle. There are 100 balls in a bag, 99% of which are red. Some red balls are removed and now 98% of the remaining balls are red. How many red balls were removed? >!The answer is 50, which is surprisingly large.!<

14 Comments
2024/10/31
03:09 UTC

15

Consider me puzzled. Please just give me a hint. (Suguru)

14 Comments
2024/10/30
22:26 UTC

3

Any help? 43 moves, just need to have 123 and 456 in the logical places in the middle. 43 moves, and my brain can't wrap around it, knowing I have to destroy the order to get it right. TIA!

13 Comments
2024/10/30
17:56 UTC

8

I need help solving this logic puzzle. The game explicitly states that you do not need to guess to solve the puzzles, so what am I missing?

The game is called “Clue Master.” I got it on the Apple Store

29 Comments
2024/10/30
17:18 UTC

19

Can anybody help me solve this?

17 Comments
2024/10/29
23:01 UTC

3

Help with Montague Mystery 2.3- what cannot be assumed?

Hi Everyone, I’m working through Montague Island Mysteries right now, and I’ve gotten totally stumped on puzzle 2.3. I’m hoping someone can explain it to me.

A couple of rules set out in the beginning of the book: the Montagues and the staff never lie. Statements made by innocent guests are never lies. Statements made by guilty guests may lie.

Okay. So. My first thing I notice is clue 3: only 2 people are in the library at the same time. So looking at statements 8, 9, 10, one of them is lying. So, the others (11, 12, 13, 14) are all telling the truth.

So, looking at clue 14, we know every guest subscribes to a different magazine.

So then I’m looking at clue 7, which says only 1 of three statements are true. Well, if according to clue 6, Taylor subscribes to Ferret Fancy, then Jessica subscribes to Court Illustrated. This can’t be true, because then there are two true statements in clue 7. So, Charles must subscribe to Popular Seance.

So, clue 5, Karen must subscribe to Height Watchers. But, then you go to clue 2, and all the statements must be false!

The only thing I can think of is the inverse of clues is not always true. So, if Jessica subscribes to court illustrated, Taylor doesn’t have to subscribe to Ferret Fancy.

But how can that be? Can someone explain why the inverse is not true? Why can that not be assumed?

7 Comments
2024/10/29
22:51 UTC

11

Is this even possible?

I’ve been stuck on this one for a while. I’m starting to wonder if it’s even possible. Some color is always getting blocked off no matter what I do! 😭

14 Comments
2024/10/29
20:18 UTC

0

2 player puzzle in a video game, 1 player on left 1 player on right. Each player has 12 color tiles they must place in their room in the grid shown.

Title, each player has their own hall/room. The rooms appear to be mirrored in the decor as well as “coded” in that a red light in the left room is a blue light in the right room, etc. The players can see into each others rooms but not interact. Trying to figure out what order to put the colors in each room to pass through.

10 Comments
2024/10/29
14:04 UTC

30

anyone know what this kind of puzzle is called? i really want to find more.

42 Comments
2024/10/29
12:19 UTC

27

Crossword help

18 across and 10 down

44 Comments
2024/10/29
01:12 UTC

0

Help!

i’ve already tried a handful of combos and none are working

15 Comments
2024/10/28
23:49 UTC

4

Looking for a puzzle I saw yesterday

I saw a puzzle in my feed yesterday, and now I can’t find it. It was made by the person who posted it, and was a whodunnit with a 12 by 12 grid representing a house. Each person had a clue about where they were located i.e. “was next to a table.” Each person occupied a separate row and column, with the victim going in the last remaining space. The murderer was the person in the same room as the victim. Can anyone give me a link?

4 Comments
2024/10/28
21:21 UTC

28

Name and occupation teaser

12 Comments
2024/10/28
11:10 UTC

1

Kubok puzzle combination chart?

Does anyone have a combination chart (or strategy guide) for the numbers 1-16 like is used for killer sudokus? kubok is a 4x4 grid with numbers outside the rows and column that indicate the total sum in each row and column. this is what i use for killer sudoku, but i need one that is from 1-16. https://godoku.com/play/killer/combinations/

1 Comment
2024/10/27
18:31 UTC

2

Bed Sheet Puzzle

So this came to me while making my bed this evening, and maybe this belongs in r/math, but my puzzle is this:

Say you have a fitted sheet that has side lengths A and B, which match bed side lengths A and B. One corner of the sheet has a tag, which is placed at either the bottom right corner or the top left corner of the bed.

If you are at the bottom right corner of the bed and are holding the corner of the fitted sheet, which does not have the tag, and you do a quarter rotation, and still do not have the tag, can you prove if the corner you are holding will fit the fitted sheet onto the bed, i.e., the tag is at the top left corner of the bed? Or should you rotate the fitted sheet another quarter turn to fit the sheet on the mattress?

4 Comments
2024/10/28
03:44 UTC

1

Games Magazine Puzzle

Long shot for sure, but wondering if anyone recalls the Game Magazine quiz that was part of a contest to visit Ireland. I’m going by my memory, which…well, you know, tricks at times, but as I recall, the two clues were along the line of -

  • a royal one 1066
  • a road divided is

I cannot recall what those provided the answer to, but if anyone has a great recollection, I’d appreciate the insight!

8 Comments
2024/10/28
02:10 UTC

4

Promote your project in this thread

This thread is for promoting your own works. Please limit your promotions to only one per week.

15 Comments
2024/10/28
00:01 UTC

0

Jack and Jill

These are two different math problems that are a bit tricky.

1.) Jack and Jill are avid sports fans, and they have made a bet about the outcome of tonight's baseball game, even though they only have $20 in cash between them. Whoever wins the wager will get five dollars; if Jack loses, he would end up with one-third of the amount of money that Jill would have. How much does each pal currently have in his or her wallet?

2.) Jack and Jill are rivals in other ways as well. For example, last year they both sold boxes of Choco and Nutti cookies for a charity, and of course each wanted to outdo his or her chum. As it turned out, Jack sold 20 more boxes of Choco than Jill did, and Jill sold 30 more boxes of Nutti than Jack did. Knowing that Jack sold 80 boxes in total--some in both brands-- and that Jill sold 30 boxes of either Choco or Nutti, who sold more boxes in total?

4 Comments
2024/10/27
20:02 UTC

750

Ball Logic Puzzle

139 Comments
2024/10/27
17:54 UTC

17

Crossword? Word Search?

This is on the pavement at my children’s school and it drives me crazy. If it is a crossword, why are there random letters? If it is a word search, why black out four spaces? Is it a game? Some letters missing, some duplicated?

28 Comments
2024/10/27
13:04 UTC

1

Stumped on this Sudoku?

As the title says, was doing this Grandmaster difficulty Sudoku on the Microsoft Sudoku app, but can't find any other moves I can make with what's available?

7 Comments
2024/10/27
08:33 UTC

1

Long shot

Ok long shot!!! It’s about a puzzle that I did as a child trying to figure out what it was. All I remember is bears patriotic banners might have something to do with fireworks they had ribbons the bears it was just a whole of going on. And I wanna try to find it to do it again.

1 Comment
2024/10/27
01:11 UTC

1

Trying to figure out how to resolve the indicated square in this ColorSweeper puzzle

The basic rules of ColorSweeper are as follows: Each square must be filled with a colour (white squares are considered unfilled). A number on a square indicates the amount of squares orthogonally or diagonally adjacent to the square which share their colour with the square. Filling a square with the correct colour will immediately reveal both that square's colour and a clue. Filling a square with the incorrect colour will cause the solver to lose a heart. Losing three hearts ends the puzzle. No guessing is required (according to the developer).

The variant rules for this board are as follows: The board only contains two colours. A dot indicates that the cell may be surrounded by any number of cells its own colour (including zero). A number outside the grid indicates the number of same-colour segments with an exact length of two are in that column or row. For example, row 2 has YYBBYYB, with YY,BB, and YY all being segments of length 2. Row 3 has BBYBYYY, and thus the first BB is the only valid segment of length 2 in that row.

r7c4 has been indicated by the game's hint system as a square that can be resolved with the information given, but I can't quite puzzle it out. Anyone able to walk me through how it resolves?

4 Comments
2024/10/27
00:41 UTC

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