Are you impressed by savants who can recall the day of the week on any given date in history?  Well don't be, anyone can do it.  Here's how

A step-by-step method for the 4x4x4 Rubik's Cube.

This page is a kind of catch-all for things I find interesting.  May not be exactly related to mathematics....

Surprising result: What is the volume remaining in a sphere with a hole drilled through it?