We're sometimes obtuse, we're sometimes right.
We have eight sides, and proffer insight.
Columbus likes our shape, seers like our font.
As do mages, pirates, and debutantes.
Who are we? Three words.
If you take a cube, and grow a new cube out from each of its six faces, you will get a "hyper plus sign":
This 3D solid has an interesting property. It can be sliced along its edges and unfolded into a single 2D shape that can then be re-folded to perfectly cover the surface of a cube. Your chal...
You can choose from 4 colors to color every square of the following $10\times 10$ grid.
After you finish, I'm going to take a connected block with at most three colors away. Your goal is to minimize the number of squares I can take away. How should you color the grid?
Two squares are connected ...