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Unanswered Questions

392 questions with no upvoted or accepted answers
1 vote
0 answers
362 views

General Approach to Solving Cryptarithms

I have recently started honing my problem-solving skills, starting with number-related puzzles. Cryptarithms have appeared frequently, so I was wondering whether there is some sort of general approach ...
1 vote
0 answers
545 views

MARRIED : 47 :: BLESS :?

I am preparing for a competitive exam, and I am stuck on this problem which I found in one of the practice test. I found this question on tcyonline. The practice test is not accessible to everyone. ...
1 vote
0 answers
199 views

Cryptogram with one frequent letter and other letters random

I arrived at this ciphertext as a result of a particular decryption step from the famous unsolved "Kryptos 4" cipher. It has a very unusual letter distribution: ?...
1 vote
0 answers
418 views

Is the OP on mushrooms?

What two words am I looking for in the puzzle below? (The title too is a clue). 35437 When a Deity sees its reflection, Clip the best of rediscoveries approximately. Blow has been blown when it is ...
1 vote
0 answers
448 views

Not a sudoku, but still fun?

Context: I was trying to solve some of the puzzles on this site, when it occurred to me to make a puzzle variant myself. I immediately could construct one with my additional rule. Making an ...
1 vote
0 answers
223 views

Smallest Unattainable Target in Letters and Numbers (Countdown in the UK)

To cheer myself up during the twin problems of (1) underperforming sports team XXX and (2) lockdown in state YYY, neither of which shall be named, I am doing daily number puzzles based on the show ...
1 vote
0 answers
69 views

Spider Solitaire - Minimum Guaranteed Turnovers

Consider the following game-state in Spider Solitaire. Although this game is not the most popular compared to others (e.g. poker, chess, backgammon etc) I assume the reader is familiar with the basic ...
1 vote
0 answers
144 views

Building a cube from small bricks such that no lines can be pushed through between the seams

There is a puzzle on fault-free rectangles tiled by dominoes. It is rather known (it is described in Martin Gardner’s “Mathematical puzzles and diversions”, see here) and rather old (it is known at ...
1 vote
0 answers
127 views

Searching online catalogs is a pain. Can you tell me if it's worth my trouble?

Searching online catalogs is a pain. Can you tell me if it's worth my trouble? As an example, I searched the following online catalog of a well-known country-wide British outlet for the keyword "...
1 vote
0 answers
771 views

How do you force a win in 4x4x4 TicTacToe

I have read in the wikipedia page of TicTacToe that it is possible for the first player to force a win in a 4x4x4 board. I tried to find a strategy on how to do it online but failed. So, how do you ...
1 vote
0 answers
179 views

Find the next term in the given sequence

I created this puzzle. The sequence is as follows: $$320, 71,4632,1E3D, 84B7, 6154, 4F3A44, 38B12, 11F1, BE7E44$$ Find the next element in the above sequence. Hint 1: Hint 2: Hint 3: Hint 4:
1 vote
0 answers
164 views

How would you solve the following Matrix Puzzle by u/---Kyu---?

I've been staring at this puzzle for too long, but I cannot get how it was solved. Based on the comments in the thread, a user identified that Number 1 is the correct answer, with the comment by u/---...
1 vote
0 answers
119 views

Word lists for general knowledge crosswords

When using software to create a grid for a cryptic crossword, most general-purpose word lists will do because you want most of the answers to be headwords from a dictionary. But I'd like to compile a ...
1 vote
0 answers
609 views

Decode this message to stop the destruction of Science!

An extremist religious organization called "The Redeemed Against Scientific Usurpation of God's Authority", or RASUGA, have converted the world's leading time travel researcher to their ...
1 vote
0 answers
312 views

What are sequences of letters/symbols for creating a cipher?

I have two gears with different numbers of teeth (20 and 10): The small gear makes two turnovers, while the large gear makes one turnover only. My idea is to use a large gear as an alphabet wheel (...

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