This is part 17 of the puzzle series Around the World in Many Days. Each part is solvable on its own. Deаr Puzzling, Today’s puzzle is a circular crossword with overlapping answers. Answers in all directions can share any number of letters with the preceding answer, and must share at least one. ...

The answer is a 4-letter word.

This puzzle is part of the Monthly Topic Challenge #8: Cellular Automata. This themed cryptic puzzle is dedicated to a user who proposed to make March 23rd as a special holiday for his group after seeing one of my other questions on Puzzling. It is also an encouraging message for him. If he succ...

There is one blue cube and many white ones - all of equal size. Try to arrange the white cubes around the blue one so that they touch it. Overlapping is not allowed. Valid touching is considered touching particular area on the surface of the cube. Touching in one single point or line (respectivel...

The single-tile aperiodic tiling by Goodman-Strauss, Kaplan, Myers and Smith has been all the rage recently: In this tiling a minority of tiles, coloured purple above, are flipped with respect to the rest of the tiling; the flipped tiles form a rough hexagonal lattice (indeed an infinitely disto...

Greg, our Server Security Admin, was locked up today in his own Server Room. (Yeah, quite crazy I know). The guy had forgotten the password to unlock his door. Fortunately he had saved the password on his laptop. He takes a sigh of relief and sits down on his chair, opens up his laptop and gets i...

Seeing too much increase on picture-based questions after chat-gpt. Is any data available to prove this?

It would be fun to have a puzzle "Find the only 10-digit number having each digit once AND property xyz", but offhand I don't know any "simple" xyz. "Is a square" gives far too many results, other powers don't work (up to 10). "Is prime" of course is an epic fail. Do you know any puzzle of this t...

Consider the set PD10 of pan-digital ten-digit numbers, i.e. positive whole numbers whose decimal representation has each of the digits 0,1,...,9 occurring exactly once. For simplicity, we will allow leading 0s (so there are precisely 10! such numbers). The smallest PD10 number, x=0123456789 has ...

Silent guide of our perception, Shrouded in mystery and deception. Easily brings forth a smile, or a tear so nice, Power that can stir even the coldest of ice. Silent whispers, carried on the wind, So strong, can awaken memories within. Nibbling on a fresh mango, Juices dripping, a tropical gl...