Analysis of adversarial binary search game

Lemonade Stand

Using a Watch as a Compass

Bresenham’s circles are (always?) optimal

String art: "draw something interesting with one continuous thread"

I found 2 identical packs of Skittles among 468 packs with total 27,740 Skittles

Analysis of (hexagonal) Battleship

Arbitrary-precision integer arithmetic in C++ (public domain)

Exact analysis of Chutes and Ladders in Python

More on "not-so-bad" card shuffling algorithms

Calories in, calories out