The majority of this post was written by bobble; she asked someone else to post it so as to avoid embarrassment. Aaaaand I accidentally posted this on main meta... sorry, bobble TL;DR: Use plain text instead of MathJax when possible. When should I use MathJax instead of plain text? Many people br...

Let's have two 8x8 GRIDS. By visual inspection we see they are filled with trominoes of three different colors. There are 7 trominoes of each color. On the GRIDS the trominoes are not allowed to touch anywhere side to side with the same color. As you can see the position A4 has two pairs marked ...

I look flat, but I am deep, Hidden realms I shelter. Lives I take, but the food I offer. At times I am beautiful. I can be calm, angry and turbulent. I have no heart but offer pleasure as well as death. No man can own me, yet I encompass what all men must-have.

Here is a cryptic clue can you solve it? A drink around pledge's entrance- makes walking elevated with a bit of risk. Elementary? Certainly fiction! (15)

This is an entry for Fortnightly Topic Challenge #44: Introduce a new grid deduction genre to the community. Here is a standard Neighbors puzzle. Rules of Neighbors: Place one of the digits 1, 2, or 3 into each cell, one digit per cell, so that each digit appears the same number of times in eac...

there must be a better way of solving. Can someone tell me what is the correct answer and reasoning? Thank you.

There is a 6 by 6 dot-grid. You will draw two squares by joining the dots. The squares cannot have common dots/points or areas. Rotations or reflections of a drawing are considered distinct. In How many ways can this drawing be accomplished? The figure above demonstrates only two possible dr...

Previous level and introduction: The Atom Riddles #1 Rules: Again, you are trapped in a room by the same mad scientist. There are clues in each sentence you read. You have to find the correct atomic element that matches the clues. Here is my riddle for today. I am an tragic element to fuse in ...

I'm known to make memories, to help preserve the past. But have you considered a turn to that statement? One click out of me, and you've shot who's in front of me. Though used to prevent, I can cause lament. I'm much deadlier than most weapons, who says I can only shoot people? The click doesn't ...

There is a famous investment firm where a partner was known for having candidates walk into the room without a greeting, sit across from him at a huge desk, and start right away by asking: "We accept 20% of the people who apply. I'm 90% good at my job [of vetting]. What percentage of people who w...

I was always useless at memorising poetry and stuff. I tried putting the poems into my own words as a reminder. The problem is that I only remember my versions now and have forgotten the originals! Here's my memory aid for a bit of verse but sadly I can't remember the original version. Can you so...

There are 6 major political parties in a country. An organization conducted a survey for these 6 major political parties to see what people are going to vote for. The results of the survey, in percentage terms, are as follows: In their calculation, they rounded percentages up or down to nearest ...

Behold, the first (predictably negatively scored) meta post on the main site. Too puzzle posters of this site: 123##456 sacrifices 123#456. If you're going to focus on 123#456 over 123##456, you should 1245. Rules: Uncover the context of the above "meta post", where each number represents a uni...

There are 100 prisoners, each prisoner is given a number between 1 and 100 without knowing which number, the number can repeat and not all of the numbers must be given. Each prisoner in his turn can guess his number, if he succeed, all of the prisoners are freed (they cant hear the other guesses)...

Welcome back to the Density™ series! I had intended to make these more often, but then... well... 2020 happened. Anyway, I finally got round to creating the second puzzle, and perhaps it may hint at one of the things that distracts me from making puzzles... The previous Density™ is here: The fi...

You have a large collection of dominos, each labeled with two distinct symbols drawn from some infinite alphabet. The symbols have 180-degree rotational symmetry so dominoes can be rotated. In other words, these two dominoes are equivalent: +---------+---------+ +---------+--...