I have an interesting real life problem that can be turned into a puzzle pertaining to a tournament that can be represented in this way: I have 24 people which are assigned numbers 1 to 24. A team of them are in groups of three.

ex: (1,2,3) is a team. Obviously, groups such as (1,1,3) are not possible. 4 games can arise from these teams, ex: (1,2,3) vs (4,5,6), (7,8,9) vs (10,11,12), (13,14,15) vs (16,17,18) and (19,20,21) vs (22,23,24).

There will be 4 of these games per round as there are always 8 teams, and 7 rounds in the entire tournament. The problem comes when these restrictions are placed: once 2 people are put on the same team, they cannot be on the same team once more. Ex: if (1,2,3) appears in round 1, (1,8,2) in round 2 cannot appear since 1 and 2 are on the same team.

The second restriction is that people cannot face off against each other more than once. Ex: if (1,2,3) vs (4,5,6) took place, then (1,11,5) vs (4,17,20) cannot because 1 and 4 already faced off against each other.

If there are 4 simultaneous games per round, is it possible to find a unique solution for creating and pairing teams for 7 continuous rounds with these criteria met? I'm not sure if there is a way to find just 1 solution without extensive (or impossible amounts of) computational resources, or if its somehow provable that there are 0 solutions. All I'm looking for is just 1 valid solution for 7 rounds, so in that way it can be seen as a nice (or very challenging in my case) puzzle.

My daughter found this puzzle in an activity book and is asking for more like it. Is there a name for this type of puzzle so I can look for more of them?

I have experience with Sudoku puzzles but I have only attempted a few Futoshiki puzzles, so I am stuck at this position and I need help for the next step. The rules are pretty much the same as Sudoku, except there are no boxes and you have to obey the inequalities.

Hi everyone, thank you for the fantastic feedback from my 5x5 sudoku the other day (which had cages summing to distinct prime numbers). I finally finished making my first 9x9 puzzle, and wow it was a lot of work compared to a smaller grid size! I’ll make another smaller puzzle before trying something big again.

Archipelago Bridge Network

Due to your sudoku prowess, you have been tasked with surveying a collection of islands and building a network of bridges between them

I’ve posted it to LMD here: https://logic-masters.de/Raetselportal/Raetsel/zeigen.php?id=000HXJ

Additionally, you can solve the puzzle on sudokupad here: https://sudokupad.app/v0wv9cxv0k

The rules are a bit long, but hopefully intuitive:

Rules:

Standard Sudoku rules: every row, column, and box contains the digits from 1 to 9 exactly once each.

Islands: every cell of the grid is either part of an island or the ocean. Every concrete foundation and corner-clue lies on an island. Conversely, every island, which is necessarily an orthogonally connected cage, contains exactly one corner-clue (anywhere on the island). This corner-clue denotes the sum of all digits on the island. The digit occupying the cell containing the corner-clue is the size of the island. All digits on an island are distinct, and no two distinct islands may touch each other (orthogonally or diagonally).

Ocean: the ocean is orthogonally connected. Bridges: Between any two islands, there is a sequence of islands and bridges that connect them. A bridge is a line (consisting of vertical, horizontal, or diagonal segments) whose endpoints must lie on concrete foundations. Besides their endpoints, bridges exclusively lie over ocean cells. No two bridges can share a cell (including endpoints) or cross over each other. A bridge is a palindrome line, that is, digits in the cells under a bridge form a palindrome along the bridge. Finally, a bridge cannot be built through the center of a windy cell.

Note: the win-condition is to correctly fill the grid with digits. The islands and digits are unique, but the bridges are not.

Need help interpreting these clues because apparently I’m reading this puzzle wrong. Clue 1 seems to suggest that two people made a total of 3 exchanges for a total of $8. To me that means one of them did 1 exchange, the other 2; and one made $2 and the other $6. However, clue 3 says that the person that made $6 is neither one of those previously mentioned.

I can’t fault now.

Hello /r/puzzles,

I’m currently conceptualizing a book idea (Not promoting, this is purely for community feedback and figuring out whether to tackle this project.) My idea involves blending classic literature with an interactive riddle and symbol element. As readers, you would occasionally find certain symbols at the bottom of pages, with the challenge being to decipher why they appear based on the text on that page. Also, after each chapter, there would be a statistics page for those who love numbers & stats.

Here's the breakdown:

Symbols trigger under specific conditions such as:

• The word 'prince' is mentioned.
• There's a palindrome of at least 10 characters on the page.
• A chain of 6 or more words where the last letter of one word is the first of the next.

This added layer of engagement is optional—you can choose to dive into the puzzle-solving aspect or simply read the literature in its traditional form and do the riddles later. I would also like to do five difficulty levels, and resolve every riddle at the back of the book.

I have two key questions for you:

• Would a book that combines reading with content-based riddle solving appeal to you? How would you prefer to interact with such a book?
• What are your thoughts on integrating these elements into classic literature? Does it enhance the experience, or could it potentially detract from the original works?

I’m eager to hear your feedback! (I know I would love to have such a book, but I also now that I am a not the most normal person on this planet :D)

Thank you for your time and thoughts!

How many triangles can you count?

https://preview.redd.it/xfpd9wk16vxc1.png?width=527&format=png&auto=webp&s=fedbcbd2008facb71f9696f649aa9b952926b553

I have been trying to solve this Kanoodle for 2 weeks and i cant! Someone solve it for me!!!!!!! Thank youuuu!!!!

I came across a puzzle book that had phrases meaning the opposite of a matching book title paired with the initials of the author. (The phrase as a whole is the opposite, not each individual word.)

For example: Pessimistic Outlook C.D.=Great Expectations by Charles Dickens.

There is one problem I don’t understand: Non-imitation, grade A, citrus. A. B.

Could anyone tell me what it is?

I've been thinking about this for a good while now, but it feels impossible, so I think I misunderstood the problem.

From my understanding, it is:
3 gods assigned True, False or Random, in a random order
You must ask 3 questions total. They can be towards the same god. You can't, for example, ask 3 different questions, each for all 3 gods, totaling 9 answers.

The wikipedia page for the problem states this:
"each question must be put to exactly one god"
"a single god may be asked more than one question"

Does this mean that you can ask 3 different questions but each 3 times? If so, it is a lot easier than anticipated.

Also, please DON'T SPOIL ANYTHING!

I made a spy themed puzzle treasure hunt and wrote it up on a web page. It has a series of puzzles in it, each one leading to the next one.

https://www.petertheobald.com/play/puzzle-hunt-2023-mission-improbable/

The answers are hidden, so you can try to solve them all yourself (I encourage you to!) or there's a button to just show you everything solutions and all (don't do that!)

It has: a bomb they had to defuse with wire-cutters; a hidden recorded message like the intro to the old Mission Impossible shows; A dossier with team member secret agent code names; a nuclear "core" they had to render safe; a stolen ID Badge to get into the right room; and lots of puzzles

If you solve it, I'd love to hear your feedback!

https://preview.redd.it/a3x055w51oxc1.png?width=750&format=png&auto=webp&s=829b6e4dd95d66137e3eb997f8e27fc554347b5d

Hi Could someone pls help me to solve puzzle. I need all alphabets number . Here are some conditions

1- Place each digit from 1 to 9 in the place of alphabets so that the three rows across and the three rows down from correct airthmetic statements.

2- All calculations should be performed using the correct order of operations.

​

https://preview.redd.it/dnk5w6cj1nxc1.png?width=391&format=png&auto=webp&s=807ec53cc5b9ed295bf947c8a1d145c9c3535233

https://preview.redd.it/b67tufvsamxc1.png?width=605&format=png&auto=webp&s=bf5bbc4a1a6ee1458fa2289839e35f50f57bbfca

It’s a little bit frustrating, since it seems easy

I’ve got all the possible options but there are too many combinations that work…?!

2350 = D is too D M for R

A bunch of people have tried and can’t solve this. The context is: The question contains the initial words that will make it correct.

Examples: 16 = o in a P (Ounces in a Pound)

1000 = W is what a P is W (words is what a picture is worth)

TIA!

Edit: Here is the whole sheet: Riddle

You’re walking through an unknown forest when you come to a fork in the road. Unfortunately, it’s one of those roads. You know the sort. The one where there’s always a guide or two who might lie or who might tell the truth, but never any actual signposts?

Anyway, this particular fork in the road has two guides. The first of them says “You should definitely take the left road”. The second guide, who is a monk, says “Not so fast, sir. That one’s a liar!”, “Meh, only three times out of ten”, the first guide replies.

Now, you know monks have all sworn solemn oaths to tell the truth, the whole truth, and nothing but the truth. Unfortunately, Monks only speak once per conversation, so you can’t get any more information out of him. Based only on what you’ve heard, should you follow the other guide’s advice? You can safely assume that the first guide will lie a certain integer number of times out of every ten