Heteromino is an area-dividing puzzle with very simple rules. I encountered this puzzle type on puzz.link, and seeing there's none posted here, I decided to give it a try. Here is an example puzzle with solution: The rules of Heteromino are as follows: Divide the white area into L- or I-tromin...

I came across this beautiful puzzle and decided to create my own version. Start by placing numbers 1, 2 and 3 anywhere on an infinite square grid. Now place numbers 4, 5, 6 ... $m$ in order, subject to the rule that when you place the number $k$ the sum of its 8 neighbors must be equal to $k$. Wh...

I've answered many questions on Stack OverFlow, many of which got me to sit down and think in a way like it were an entertaining puzzle! Here is an example of such a post. I want to know where the line is drawn to separate programming puzzles and programming problems (sort of like the line betwee...

This is the brutally hard Tatooine Sunset Sudoku puzzle by Philip Newman ... except the Noble Happy Star has goofed! Two of the digits have been swapped and there are multiple solutions. Fortunately, you are not required to solve the whole puzzle. All you need is six measly digits – or more preci...

It's been a tiring day and Jack's hungry. His daughter calls him up and asks daddy to buy donuts on the way back. Instead of going to his favorite shop, Pi Donuts, Jack sees Sigma Donuts on the way instead, and decides to drop by. 'Five donuts please,' he says. 'That'll be 25 cents,' says the sho...

Three colorful birds, one tropical From African lands a wild animal A made-up creature, beautiful, magical Keeping order in the streets, we are essential Who are we?

The goal of this puzzle, a hybrid of Statue Park and Cave, is to place the given shapes into the grid, subject to the following rules. As in both original puzzles, all unshaded squares must form a single orthogonally (on a side) connected region. As in Statue Park, two shapes cannot be orthogonal...