Good Rectangles and Evil Numbers - Integrated Original: Good Rectangles and Evil Numbers Good Rectangle We define a good rectangle with base $ x $ as a rectangle in which $ \frac lw = x $ where $ l $ is the length of the rectangle and $ w $ is the width of the rectangle. Tiling This is simply to ...

Find-the-stars instructions: A Find-the-stars puzzle is played on a square grid that is initially empty except some squares contain arrows. The goal of the puzzle is to fill some empty squares with stars so that: 1) Every row contains exactly one star. 2) Every column contains exactly one star....

My prefix used to levitate a ball When he was just a lowly youth, and small. His friends are not con, but surely quite pro. He's rarely an object, just so you know. My infix will happily take your place, And sounds like something that is on your face. Of terrible storms, she's sometimes a part, Y...

This is Part III of a series. Other parts: The Alchemist's Grimoire and The Alchemist's Cauldron Yet again told from the perspective of my fantasy self. The story nor the front of the letter are needed to solve the puzzle. Just like before, the story continues but the puzzles are unrelated. ...

Happy Mondays everyone Each circle represents a category (as yet unknown) Each tile belongs in at least one category - but which ones where and why?

A very old puzzle, #146 from American Agriculturist, April 1865: How may twenty-four trees be planted in eighteen rows, with four trees in each row?