# All Questions

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86 views

### How to open the lock from this safe?

The puzzle is as follows: The figure from below shows a lock mechanism used to store sensitive data microfilms from a certain lab. This mechanism is magnetic and consists in numbered buttons which ...
62 views

### How to get the least amount of pours to obtain a fractional amount of yoghurt?

The puzzle is as follows: A dairy plant in Milwaukee is well known for its yoghurt. However during the quality control a factory worker forgot to bring a set of adequate vessels to measure the ...
92 views

### What do these three towns have in common?

What do these three towns have in common? "Dublin", "Blackpool", "Chernobyl".
435 views

### How to fill 1/3 of the cylinder?

You are given 3 containers - pictured in this order below: a box with side 2, height 1, and a cone with base radius 1 and height 1 in the middle. a box with side 2, height 1, and a half sphere with ...
180 views

### I got [prefix] [suffix] [infix] from washing the [whole]

I got [prefix] [suffix] [infix] from washing the [whole]. P.S. I [infix] the [whole]. The note above, when the gaps are filled, will be a grammatical and reasonable note. What is the note?
348 views

### How to get the least number of flips to a plastic chips to get a certain figure?

The puzzle is as follows: (Transcription with grammar errors fixed) A game consists of the following: The challenge is to flip the chips in such a way so that they are as in state 2. You start in ...
255 views

273 views

### Sudoku… with 10 digits? SS#6

An entry in Fortnightly Topic Challenge #47: "Wacky Sudokus" Other puzzles in this series Welcome to the sixth puzzle in this series! For more information about the series, see the first ...
364 views

### What is a Quotidian Word™?

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. It seems that it's a rite of passage on PSE to make at least one of ...
221 views

### A talk with Four Brothers

Once upon a time, on going to the small park nearby to take some fresh air, I met four quite peculiar brothers and had a talk with them. Each had a different story to tell. The first two brothers ...
644 views

### Are there any games like 0hh1 but with bigger grids?

I am loving 0hh1 but I got bored by the largest grid 12x12. Are there similar games but with much larger grids?
88 views

### First digit of 2021^2021 [duplicate]

Can you find the first digit of $2021^{2021}$ without a computer? Good luck!
243 views

### Compoundoku wants REALLY BIG and WACKY!

This is an entry for Fortnightly Topic Challenge #47: Wacky Sudokus. Rules of Compoundoku: Solve both left and right Sudokus. In addition, the board below them is the Compound Board of both Sudokus. ...
422 views

### Stop the robot by changing value of variable Z

You're a computer security expert (i.e a hacker who doesn't break law). Your neighbour is infamous professor MacGoofy himself. He specializes in designing programming languages and programming ...
304 views

### Nurikabe: The Twisty Corridors

This puzzle is a Nurikabe. It is a little tougher than my previous one, which was designed for newer solvers, and it has a particularly squiggly solution that I found pleasing enough to post - hence ...
637 views

### If you can walk

If you can walk, I'll point in the direction you need to walk. But only if you're close to me, otherwise I'll point in the opposite direction. If you can't walk, I'll point out what needs to change ...