Questions tagged [no-computers]

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

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Join the Fun at Jack’s Casino to get a shot at Jackpot

Jack’s casino dealers are not all prime. But, he gives better odds to get the daily Jackpot by revealing lot more numbers in the sequence in play. That way his Casino is much better than Cryptic ...
382 views

It is as easy as A B C, Figure out U V C from the given relationship

Given $U, V, C$ are three distinct digits, figure them out from the following relation: $$\overline{CCC} = \overline{UVUVUV} \div \left ( \overline{UV} \times \overline{UV} \right)$$
3k views

Uh oh, the propeller fell off

I was rummaging through a trunk in the attic when I found this vintage game. It is some sort of pinwheel or propeller mounted on a board. The propeller has a cryptic series of letters painted on it, ...
138 views

Find the immediate square dancing neighbors, they dance together to perfect square

We live in a community of houses sequentially numbered from 1 to 100. We all love square dancing but only two immediate neighbors are joy to watch. If you concatenate their house numbers, it forms a ...
2k views

We are two immediate neighbors who forged our own powers to form concatenated relationship. Who are we?

Our concatenated number is $\overline{ABAC},$ where $A, B, C$ are all positive digits (1 - 9). Our relationship is $$\overline{ABAC} = A^A + B^B + A^A + C^C$$ Who are we?
159 views

Find the next terms in this sequence. 4,82,1

Find the next few terms X, X, X. in this sequence Give your reasoning 4, 82, 1, 14, 84, 88, 0, 82, 81, 22, 12, X, X, X
609 views

Narcissistic cube asks who are we?

I am a five digit narcissistic cube who likes to display my root right upfront. I also have hidden it in the back of my four digit cube brother. Who are we?
1k views

Long digital sequence. 16xxxxxxxxxxxxx61

Find the digital key and very simple method to unlock the long digital sequence 16xxxxxx61 Additional clues: Eeryday one clue will be given till problem is solved Day 1: Bounty Day 2: My code is ...
855 views

And now you see it II (the B side)

It amuses me that the word CANOES has been there in VOLCANOES all along. And URCHIN is barely hiding in the word LURCHING. And ASPIRIN is right there in ASPIRING. SISTER is in RESISTER. AKIN is in ...
108 views

Number of days in a normal year expressed with five consecutive positive integers [closed]

Given $D$ is the total number of days in a normal year $a$, $b$ are positive integers $P$, $Q$, $R$, $S$, $T$ are consecutive integers Figure them out by combining the following six expressions ...
2k views

And now you see it

It tickles me that the word TUNA is found within FORTUNATE. And there is a COFFIN in SCOFFING. And who put the LAGER in the VILLAGER? The SKIER in RISKIER? The ROMAN in the MICROMANAGER? The ...
481 views

Solve for the Number in the number..square..cube relationship

Each letter stands for a distinct digit...no computer or calculator needed. Just pure logic and some mental multiplication. CUBE is a concatenated number and it is a cube. X denotes multiplication. (...
348 views

Like totally amazing interchangeable sister outfits II: The Revenge

The sisters have learned a few lessons from their recent debut. They are now ruthlessly efficient outfit-swapping machines. (You know, sort of like Valley Girl Terminators...) They can now sustain ...
117 views

Find Those Notations #5!

Here’s another different one. You must find as many mates in 4 as possible. Include shorter ones if you want that you find, but at least one mate in four has to be included in your answer. But no ...
3k views

Like totally amazing interchangeable sister outfit accessory swapping or whatever

OMG, me and my sister are like total BFFs and we share clothes like all the time! We soooo have the same sense of style and we borrow stuff from each other like every single second! We don't even ...
321 views

Choo-choo! Word trains

All aboard the Word Train Express! Engineering a word train is simple: I'll give you the locomotive (the first word) and the caboose (the last word), and I'll specify the number of boxcars (...
637 views

Square Spin #1: Sun and Moon

Defining Square Spin Lets play a game! The aim of this game is to transform one image into another using the least amount of moves possible. Here is what a move consists of: ...
2k views

Fully-Firstable Anagram Sets

Okay, first let's define some terminology: Anagram - Oh come on, how are you on Puzzling.SE if you don't know this one? Anagram Set - a list of words that are all anagrams of eachother, e.g.: ACTS ...
1k views

From jafe to El-Guest

Largely inspired by From Puzzling to StackExchange by CodeNewbie From jafe to El-Guest jafe > cafe > cate > cete > cet > get > gest > egest > e gest > e guest > el guest Rules: In any move, you ...
2k views

Superhero words!

Quietly walking among us are words which are actually superheroes in disguise! Just as Diana Prince spins around to become Wonder Woman, some seemingly ordinary words can spin around to reveal their ...
254 views

Have Some Tea, people!

Haven't been online for so long due to school and stuff :P Saw a teapot riddle a while ago so here's one Teapot 1: What's with you and your slimy things? Teapot 2: I help maintain the ecosystem! ...
513 views

Missing checkmates in one

Have you ever missed a one-move checkmate and immediately realized it after making your move? If you have, you just might have what it takes to crack this problem. Let's take an example: g4 e5 ...
513 views

This word with a lot of past tenses

This interesting word is full of past Starts with a past tense verb. Add a letter at the end and you have a different past tense verb. Then add more letters at the end and you get yet ...
2k views

My Graph Theory Students

I have 18 students in my graph theory course this semester: Anne, Bernard, Clare, David,..., and Rachel. At the start of the course I asked them to draw the graph below, in which each of them is ...
387 views

You are seeking the route to the lost city of El Dorado. You have assembled several historical accounts from explorers who claim to have reached it. Unfortunately, the accounts are incomplete, ...
449 views

Backwards pawns

Part One: Reach the above position from the starting position Part Two: Find the fastest way to get to this position. Answering part one will get you an upvote, answering part two gets the ...
585 views

Inspired by this What is the longest word you can form by using other words arranged in alphabetical order, and making a ladder out of their letters. Example: (8 letters - Identity) ...
221 views

Digital Font Puzzle. One easy the other may be not

In the Digital Font shown below, each letter is made up of line segments. For example letter A has 6, B has 7, C has 4 segments and so on. Question 1 ( Easy) Which english number, when spelled out ...
2k views

Second-rate spelling

Find the longest word which can be spelled with the second letters of a group words in alphabetical order. An example with incomprehensible (16 letters): a...
282 views

Holiday cookies word attrition [humans only]

I am inspired by the story of the boy who came upon an assortment of holiday cookies beautifully arranged on a platter. The boy quietly helped himself to a cookie and artistically rearranged the ...
524 views

1 0 1 0 1 0 1 0 1 0 1

Start with the digits:       $1\ 0\ 1\ 0\ 1\ 0\ 1\ 0\ 1\ 0\ 1$ You may then add (only!) these simple arithmetic operators:       $+\ -\ \times\ \div$ You may also ...
887 views

Nested word series [humans only]

[This is just a fun little puzzle for humans. We'll see you next time, computers!] It's interesting to think about words contained in other words. How often do we notice, for example, that ...
4k views

The No-Straight Maze

Consider the following maze. You can walk on the black lines, and your aim is to go from the green at the maze's bottom to the red on the left side. However, each time you reach an intersection of ...
172 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 ...
90 views

The hardest one I believe [duplicate]

If you are really smart solve this Sudoku within a day BEST OF LUCK
633 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, ...
104 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? ...
154 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 ...
720 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 $x$?
377 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,...
128 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,...
627 views

The “Evan” Numbers

The Even numbers are simple: $2, 4, 6, 8, 10, 12, \dots$ The "Evan" numbers follow a tricky rule: $2, 4, 6, 30, 32, 34, 36, 40, 42, 44, 46, 50, 52, 54, 56, 60, 62, 64, 66, 2000, 2002, 2004, \dots$ ...
231 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.
678 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 ...
288 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 ...
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?)
150 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 ...
172 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 ...