Questions tagged [no-computers]
A puzzle designed to be solved without using calculators, online decoders or computer programming.
2
votes
0answers
35 views
9 Mates In 5-An Original Chess Puzzle
Here’s a toughie for you-and no computers allowed!
I have created this unique chess puzzle which white mates black in 9 different ways, all in 5 moves, no matter what black does. Assume optimal play ...
0
votes
2answers
70 views
Famous Number Displays Dual Cubic Relationships..Figure it out
$Given$:
A, B, C, D are all distinct digits.
ABCD is a concatenated number
$ABCD$ = $A^3$ + $(A+C+D)^3 $ = $D^3+ (A + D)^3$
Figure out this Number and why is it Famous?
Also provide ...
6
votes
1answer
292 views
The Most Powerful Number
A power-full number is defined as a number with $n$ amount of non-zero digits $D_x$.
The number takes the form $D_n$&$...$&$D_2$&$D_1$. The digits in a power-full number satisfies the rule
...
-1
votes
2answers
123 views
Hexagon vs Harry Houdini…Round 1…How did Harry do? Let us Find out
$Given:$
Harry Houdini is Mental Math Magician and top Math Wizard at Hexon..one of the top cryptographic companies in the world.
They have deployed Passwordless super smart secret system to ...
0
votes
2answers
63 views
Lady Luck Powers Up Every Member to Sum Upto Non-Prime Number. Who am I?
$Given:$
UV, WX, UVCUVWX, are concatenated Numbers.
U, V, C, W, X are distinct digits ( zero to nine ).
$Relationship:$
$UVCUVWX$ = $U^7 + V^7 + C^7 + U^7 + V^7 + W^7 + X^7$
$Clues:$
1) UV ...
8
votes
1answer
127 views
These Two Cubes are The Only Ones That Are All Pure Prime..name them
Given:
CU and BBUE are concatenated Cubes with all prime digits B, C, U, E.
Which are these two Unique Cubes?
8
votes
1answer
119 views
Uh oh, now the boards are missing!
I found another trunk in the attic, with more of those vintage propeller games. This time, I've got propellers, but no boards.
Is it possible to figure out the whole board from just the propeller?
...
5
votes
2answers
195 views
SAD!!!…System Access Denied..you got three minutes to input three digit passcode
Given
Hexagon is super secret system with varying levels of access. Users do not have to remember any password. They just have to answer the questions posed by Hexagon strictly in the allotted time.
...
1
vote
3answers
406 views
Palindromic Pan digital Special Square wants you to reveal its Root
All you need is just Mathematical Logic and few minutes.
No calculators... no computers.
Concise Logic based answers are the preferred choice.
Given:
Palindromic Pan digital Perfect Square ...
4
votes
3answers
185 views
Find this Unique UVC Palindrome ( ignoring signs and decimal) from Given Fractional Relationship
Given:
U, V, C are three distinct digits ( 0 to 9 ).
UVVVV and CVVVV.U are concatenated numbers.
Dot “.” Stands for decimal.
Relation:
$UVVVV/C= CVVVV.U$
Find U, V , C
0
votes
2answers
105 views
Number of Days in a Year with Consecutive Perfect Squares
Given:
Number of Days in a normal Year
To Do:
Express it in two different ways utilizing Squares of consecutive positive numbers.
3
votes
2answers
113 views
Find the values of U, V, C based on the given relationship…useful for upcoming puzzles
Given:
U, V, C are 3 distinct digits..values can vary from 1 to 9.
CU is a concatenated number
Solve for U,V, C from the following relationship:
$U^V$ X $V^U $ = $CU $
This will give some basis ...
0
votes
0answers
58 views
Can you Crack Cohen Family’s Cryptic Codes?
Cohen family of four ...each have their own single numeric code to generate first level access to the system. Before first level access is granted, system displays any one of the 4 single digit codes. ...
3
votes
2answers
143 views
Can you express this orderly Palindromic Devil in strict ascending Pandigital form?
Given:
Devil as you know is $ 666 $
Using digits 1 to 9 in strict ascending order and only three mathematical signs ( +, -, /, x ... of these are allowed), write the Pandigital expression
$ 666 = ...
2
votes
1answer
97 views
Puzzling Palindromic Year with Pleasing Palindromic Expression.. Please find them
No computers, calculators or searches.
Given:
The number is a Palindromic year. $PQ$ is a concatenated number.
$ U , V $ are two distinct positive integers
Expressed as
$ PQ ^ U + PQ ^ V + ...
1
vote
1answer
159 views
Be a Wizard..Find the missing digits of this 41 digit Humongous Palindromic Square!
Absolutely No calculators or computers.
Only Simplest Method for finding the missing digits will be accepted as the right answer.
Given:
The square of this 21 digit number
$ 229 359 782 235 085 ...
2
votes
2answers
179 views
Cathy’s Composite party is powered by three Prime Pals. Can you find them?
Given:
A, B, C are 3 distinct primes.
Find the smallest composite number Y that satisfies the relation:
$ Y = A ^ C + B ^ B + C ^ A $
1
vote
1answer
79 views
After seeing my 16xxxx16 sequence puzzle, my Younger sibling wants to get into the act and give a little puzzle of his own
In our Reptand prime family, as you know, everybody has our own signature Cycle length. My younger sibling unit has shorter cyclic period and he wanted to create little puzzle for you.
He truncated ...
11
votes
3answers
611 views
Five Powers of Fives Produce Unique Pandigital Number…Solve for X..Tell me Y
Given: Y is a Pan-digital Number (no zero, 1 to 9 only) ending in 3.
Pan digital number consists of all 9 digits 1 to 9..each digit occurring only once as is the case here. Last digit is given as 3 ...
2
votes
1answer
82 views
Composite Cat Cannot divide its immediate lower neighbors factorial without leaving a remainder
Find this unique composite cat given the information in this title.
5
votes
2answers
127 views
Prime turns into Perfect Cube, if you reverse its digits and subtract…What is the number
Given:
1) I have more than one digit.
2) Reversed number is subtracted to give at least 2 digit number which should be a cube.
2) you don’t even need a calculator to figure me out.
Who am I?
1
vote
2answers
91 views
Unravel this simple cryptic Unique NUMBER relationship
Find GC ...it is a concatenated number
Given:
N + U + M + B + E + R = GC
8
votes
1answer
665 views
A B C in close knit relationship.. Who are they?
Find these closely knit numbers examining their relationships.
A, B, C are distinct positive integers. AB, AC are concatenated Numbers.
Given:
1 / AC = 0.0BC0BC0BC......
1 / BC = 0.0AC0AC0AC......
0
votes
0answers
95 views
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 ...
7
votes
1answer
343 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:
$$ \overline{CCC} = \overline{UVUVUV} \div \left ( \overline{UV} \times \overline{UV} \right) $$
26
votes
3answers
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, ...
5
votes
1answer
123 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 ...
17
votes
2answers
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?
2
votes
0answers
137 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
9
votes
1answer
598 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?
8
votes
5answers
961 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 ...
13
votes
3answers
825 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 ...
-9
votes
1answer
88 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 ...
14
votes
2answers
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 ...
1
vote
3answers
457 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.
(...
9
votes
1answer
341 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 ...
2
votes
2answers
86 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 ...
24
votes
7answers
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 ...
10
votes
4answers
287 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 (...
3
votes
1answer
199 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:
...
15
votes
6answers
1k 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
...
13
votes
3answers
994 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 ...
24
votes
5answers
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 ...
6
votes
2answers
250 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! ...
8
votes
2answers
502 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
...
9
votes
1answer
501 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 ...
12
votes
2answers
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 ...
14
votes
1answer
371 views
The road to El Dorado reconstructed from fragmented accounts
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, ...
5
votes
5answers
443 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 ...
3
votes
3answers
547 views
Word-Letter Ladder
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)
...
