New posts in Grid

The Caged Circles

Golfing Advent of Code 2020, Day 3

KoTH: Political Simulator

Rectangles in rectangles

Extend the most recent "nice" OEIS sequence: stepping stone puzzle on a grid

Is this a cube?

Triangles in a tetrahedron

Number of distinct tilings of an n X n square with free n-polyominoes

Can the cursor reach the bottom?

Determine if a grid contains another grid