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Questions tagged [no-computers]

A puzzle designed to be solved without using calculators, online decoders or computer programming.

5
votes
1answer
80 views

Unsolving a Rubik's Cube

A few days ago I picked up a solved Rubik's Cube that I had abandoned due to forgetting how to solve it, and started turning the faces to make nice patterns. A few minutes later, I'd made one - each ...
0
votes
0answers
80 views

The hardest one I believe [duplicate]

If you are really smart solve this Sudoku within a day BEST OF LUCK
7
votes
4answers
566 views

Unusual letter combinations 2

I really liked this puzzle so I made my own version of it! I'll give you an unusual set of letters which are present consicutively in one* word in the English language (and possibly its derivatives, ...
2
votes
1answer
91 views

Slumber, watcher — What am I?

This is the start of a poem I've always loved. If you don't know the source, can you guess the answer? ...
0
votes
1answer
147 views

ENCRYPTED MESSAGE

I have been given a code to break, and I did frequency analysis on it, but I cannot go any further due to the fact that I am not clear on where are the spaces between words, so in example I present ...
13
votes
2answers
707 views

Digit sums of successive integers

For a natural number $x$ both, the digit sum of $x$ and the digit sum of $x+1$ are multiples of $7$. What is the smallest possible $x$?
12
votes
4answers
368 views

This word is a name. Also a Surname

Starts with a place, ends with a place Starts with a number, ends with a number Starts with a surname, ends with a surname A word to the wise. Only one vowel- used twice. Can you guess,...
4
votes
1answer
105 views

What's the most triangles you can make with 4, 5 or 6 straight lines?

All the triangles can stick together. The triangles counted is the independent triangles, triangles made up of two shapes, a triangle made up from 3 shapes, or the outline of the shape consisting of 4,...
5
votes
1answer
611 views

The “Evan” Numbers

The Even numbers are simple: $2, 4, 6, 8, 10, 12, \dots$ The "Evan" numbers follow a tricky rule: $2, 4, 6, 30, 32, 34, 36, 40, 42, 44, 46, 50, 52, 54, 56, 60, 62, 64, 66, 2000, 2002, 2004, \dots$ ...
0
votes
3answers
133 views

Unscramble the words and find the odd one out

Unscramble these words: noacb olve aukccpe Which is the odd one out? There are several possible solutions.
2
votes
1answer
114 views

A word if you take one letter away at a time you will be left with a two letter word [duplicate]

A word where if you take away one letter away at a time you end up with a two letter word. What is it? Hint 1: Hint 2: The word is not mentioned in The most words that can be made by ...
3
votes
2answers
226 views

The Multiple Choice Test Test

One day, the logic professor announces a pop quiz. "All questions in this test are about the test itself. In fact, the test is open note since you have a copy of the test itself. Good luck!" 1. What ...
35
votes
5answers
3k views

Word that is fun. Nine and one

Starts with a name, ends with a name Starts with a charge, ends with a charge Starts with an element, ends with an element Would be fun to guess this one! (May be more than one?)
2
votes
2answers
129 views

The Inducheon Conspiricy (Who is guilty #8)

At the Korean Nation Police Agency (NPA) in Migeun-dong, Seoul, researchers discovered that 73% of the Senior Inspectors (경감, 警監) all came from the small village of Inducheon. At first, they thought ...
5
votes
1answer
153 views

The Inducheon Conspiracy (Who is guilty #7)

At the Korean Nation Police Agency (NPA) in Migeun-dong, Seoul, researchers discovered that 73% of the Senior Inspectors (경감, 警監) all came from the small village of Inducheon. At first they thought it ...
12
votes
1answer
178 views

This compound word is a fun thing

Here is an interesting compound word It has all the 5 vowels but used only once (no repeat of the same vowel) It has 4 consecutive words that include 2 names. It starts with a name and ...
4
votes
1answer
196 views

Murder Detective (Who is guilty #6)

[This is a puzzle I've been working on. It has a unique solution. This one is meant to be one of the easier ones. Comments, thoughts and suggestions are welcome!] The suspects are Amos, Celia, Emilia,...
3
votes
2answers
196 views

A Criminal Conspiracy (Who is guilty #5)

[This is continuing from previous puzzles. #4 was quite tricky. This one is meant to be much easier (I'm testing the boundaries here). I've been testing various versions and would love your thoughts. ...
7
votes
2answers
229 views

A Criminal Conspiracy (Who Is Guilty #4)

[Appeal: I'm trying to figure out a fun puzzle formula. There are many out there ("Who owns the fish", sudoku, etc). I'm interested in feedback on whether this works or is interesting for people. ...
9
votes
10answers
4k views

A Body Part inside another Body Part

In one of his silly question mood Grandpa says: " Can you name a body part that is entirely inside (within) another body part but some distance away?" Taking the clue from his last question I ...
14
votes
1answer
543 views

A Compound word full of words

This compound word is full of words. You might say it is made up of 2 words and you would be right. But the first of the 2 words is also a compound word! You might say it is made up of 3 ...
2
votes
2answers
217 views

Endless eight swap

I have a pegboard with 10 pegholes numbered 1 to 10. There are 10 pegs of different colours: dark blue, orange, violet, black, light gold, indigo, navy, green, ivory, and teal. Each peg initially is ...
6
votes
2answers
434 views

The Chessboard Exhibition

Why not, another entry in Fortnightly Topic Challenge #41: Short and Sweet I just bought the newest, coolest chessboard! I think I'm going to share it to my five chess pieces at the National ...
5
votes
5answers
1k views

Anagrams: From Cheese to Sneeze [closed]

Anagram time! Similar to Anagrams: From Food to Food, but this time its From Cheese to Sneeze, or (almost) Anything You Please. Brief: You must turn the names of cheeses into common nouns using ...
39
votes
5answers
3k views

Unusual letter combinations

This is an entry in the Fortnightly Topic Challenge #41: Short and Sweet. English spelling is very strange. Sometimes you encounter words with letter combinations that would seem entirely ...
14
votes
8answers
2k views

But it is not an Enclave

What country (sovereign) lies entirely within (inside) another country, But It is not an Enclave? Two possible solutions
3
votes
3answers
293 views

Grandpa's Numbers

Grandpa likes pencils but not pens Grandpa likes Beijing but not Tokyo Grandpa likes math but not chemistry Grandpa likes Contact but not _______ Make sure to explain! Hint 1: Hint 2:
6
votes
2answers
2k views

100 Fruits for 100 Dollars a more challenging version

This is a more challenging version of the reported puzzle " How will you get 100 fruits in Rs. 100? " Bob buys 4 different fruits for exactly 100 dollars Jackfruits cost 15 dollars each ...
13
votes
2answers
1k views

A Halloween Chess Puzzle

Halloween is finally here, so I thought I'd do a theme puzzle! I love chess, and I wanted to do a chess puzzle... so... (It kind of looks like a jack-o-lantern, okay?) Black to move and ...
13
votes
2answers
1k views

Knight Checker Puzzle

Inspired by this question Here's a quick Knight Checker (a chess variant) puzzle. In case you haven't read the rules to it in the above link, I'll repost them here: Each player begins with 1 ...
0
votes
2answers
573 views

Spelling Puzzle

All right students, take your seats for the "Spelling Bee." Perhaps I should say "Arranging Bee." Listed are the names of seven countries of the world. For the test, I have scrambled the letters that ...
7
votes
3answers
622 views

No spanish required

Each letter represents a digit, so what is Mucho and Poco (although who's to say?) ...
11
votes
4answers
2k views

A poorly-designed chess problem

Entry into Fortnightly Topic Challenge #40 Out of character comment: For effect, don't open up the next spoiler until you've finished the statement before. If answering, please explain each remark. ...
2
votes
1answer
101 views

Excited Raichu vs the Dream (Chess Puzzle)

(Source: An actual tournament game I played all the way back in 2016) I had the weirdest dream last night… It started out normal enough, which for me, is basically nothing… but then I woke up, ...
4
votes
1answer
198 views

The Wheel of Judas

I was studying up on some pretty archaic methods for testing intelligence and I came across one called The Wheel of Judas. It is said that if you were able to fully solve the wheel that you were a ...
3
votes
1answer
134 views

Facing four mate threats

Just a regular chess puzzle. White to move and win.
3
votes
1answer
232 views

An Antichess Puzzle

There's a fairly popular alternate version of chess called Antichess, or Losing Chess, or about seventeen other names. In this variation, the pieces move as usual, but the rules are slightly altered. ...
17
votes
6answers
3k views

Nobody likes this compound word

This compound word, that no-one likes, is made up of 3 consecutive words. Also made up of 2 consecutive words. Also the prefix and suffix are identical words Uses only 3 consonants. ...
12
votes
2answers
335 views

Cannibalistic Words

Drawing from the word pool below, find the twelve Cannibalistic Words. (Note the no-computers and logical-deduction tags.) WILD _ _ ☐ _ _ _ _ ☐ PENS ☐ _ _ _ _ ☐ _ _ DEED _ _ _ ☐ ☐ _ _ _ BLED ...
2
votes
1answer
142 views

Row of alternating coin

I stumbled upon a mathematical puzzle that goes like this: You have 2n coins that alternate between head and tail. For example, if n=3, then it looks like H T H T H T, where H = head and T = tail. To ...
2
votes
1answer
130 views

Some Really Confusing Math

I was talking to a co-worker this morning and he stated that he was able to make both of these statements true using only $1, 3, 5,$ or $ 7$. He then proceeded to tell me: $1 = 5$ $2 = 4 + 7$ $3 = 1$ ...
5
votes
2answers
1k views

Did Grandpa count correctly? Another Grandpa Mystery

Grandpa just returned from a long trip. He started telling me about his adventure in a wild place. " I saw animals", he said. "Three different kind" "Just for fun I counted their limbs" "...
3
votes
2answers
142 views

$109088$ as sum of $3$ palindromes

One can write the number $109088$ as the sum of two palindromic numbers as follows: $$109088 = 99199 + 9889$$ Note that the numbers on the right are both palindromes (read the same left to right as ...
12
votes
1answer
306 views

A small team doing their job

Find the unique solution to $$ 5\,ninja + retook + quarter + turn = \_\,\_\,\_\,\_ + \_\,\_\,\_\,\_\,\_\,\_\,\_\,\_\,\_\,\_ $$ where each unknown is a different _ _ _&#...
6
votes
3answers
386 views

Calculator Bomb

So, I need your help. I got home after a long day and found a calculator roughly taped to my door. However, there was something much more disturbing attached to that calculator. It was some kind of ...
7
votes
4answers
171 views

Fill in the boxes to get the right equation v2

My take on a recent puzzle. Place numbers into boxes to create a correct equation, using each number at least once: $$\Box-\Box+\Box\times\Box=\Box\:/\:\Box$$ This time the four decimal numbers are ...
1
vote
2answers
101 views

A Fairly Simple Equation #2

I got a lot of positive feedback on my last puzzle, A Fairly Simple Equation (even though it was apparently a lot easier than I thought it would be!) So, I've got another similar puzzle. General ...
3
votes
3answers
150 views

A Simple Math Puzzle

So my last math puzzle was too easy apparently, and this one might be too. Either way, the rules are the same. No rotation. No duplication. No combination. No rounding. No computers. Good luck to ...
6
votes
3answers
534 views

My First Math Riddle

Okay, so I write a lot of Riley and story riddles; however, I've noticed that I like the mathematical riddles too! I decided to write one, and I hope you all enjoy it. A few rules: No rotation. No ...
10
votes
7answers
781 views

Fill in the boxes to get the right equation

Here is a math puzzle I had a little bit of hard time with No computers please There is a solution without inverting 6 to 9