Hi! I'm Md Hossain (@knowriafan). My favorite part of math is the small notation traps that trip people up, like why −3² = −9 but (−3)² = 9. Here's a piece with a quick self-check puzzle set: https://medium.com/@knowriafan/how-to-simplify-square-roots-without-guessing-374ee27a98c9. I'd love to write puzzle-style pieces for Math Games.