Imagine you are on a spaceship. To activate this machine, you have to enter a code with these given clues. 1110C1742 0110F1230 1001B1126 -------------- You have to enter the fourth code using one of the given codes. Which code suits the logic above? 10110E2733 11001Z51146 1111A3240 11011C3036...

Welcome to my new puzzle: the NURIKOLOR, which is essentially the colored version of Nurikabe, but not exactly, with a few twists. The rules are simple: There are colored numbers on the grid, which indicate the number of tiles the group of its color holds. There are tiles with 1 "X", which ind...

A box containing identical dice that were arranged to have same orientation has a missing die in the center (see figure). The dice moves to the free space for they can change orientation and position. To move by sliding is prevented by some wire mess but a die can roll up, down, left or right...

Apply Slitherlink rules. In addition, all sheep must be inside the loop and all wolves must be outside the loop.

Previous level: Nurikolor (Level 1) Level 2 of Nurikolor is now here. As a recap, here are the rules, but changed "X" to colors. There are colored numbers on the grid, which indicate the number of tiles the group of its color holds. There are tiles with 1 color, which indicate the color of the ...

Summary: I'd like to create a puzzle which also instils a sense of the 'Cryptic Clue Chat Chains (CCCC)' used in The Sphinx's Lair chatroom on this site. Before I do, I would like to be sure that it fits within the scope of the site. Idea: To create a puzzle within a particular theme where the a...

(again a more a difficult one) The (same) premise: An unknown number of people stands on a line playing a hat guessing game they may not move during the game, they can only look straight ahead (each person in a direction along the line, i.e. right or left depending on their facings) they all wea...

I crossed a suspension bridge at 10 PM to go to the local market, buy some fruits and vegetables, and then returned home. After coming home I turned on the TV and opened the news. I saw that the same suspension bridge which I crossed before collapsed at some point of time between 10:15 to 11 PM a...

How many bags of marbles, each 2/5 of a kg each can be made from a sack of marbles which weighs 280kg? Please explain with explaination

They say a picture is worth a thousand words. That may be a slight exaggeration in this case, but surely any deficit in the quantity of the words would be vastly outweighed were they to be infallible? I present to you a puzzle which is quite simple (albeit large). While its creation has cost me m...

I know this kind of question is asked before but answers were not clear. Recently, like yesterday, a nice question, got 18 (and counting) answers! Many interesting, some out there. While I have seen many questions either closed or asked for an edit for even 5 or 6 answers this one has not drawn a...

I don't know the name of this puzzle but I'd like to be able to google it See the attached photo. (I've already search on G puzzle and Hook puzzle without any luck).

One of my good friends is a scientist, working for some kind of radio telescope organization - I forget the name, but maybe it started with an S? Anyway, she told me that yesterday her team picked up an intense narrowband radio signal, out of the blue, that beamed for around a minute and then dis...

This is in the spirit of the What is a Word/Phrase™ series started by JLee with a special brand of Phrase™ and Word™ puzzles. If a word conforms to a special rule, I call it a Lifelong Word™. Use the examples below to find the rule. $$ % \def\Pad{\P{0.0}} \def\Title{\textbf{ Lifelong }} % \def\...