New posts in Coloring

"Math Lotto" Tickets - finding the minimum winning set

Bracing a polygon without triangles

Proof strategy for 4-Colour-Theorem

Number of $2$-colorings of edges of the $n$-dimensional cube?

Minimal covering of a $5 \times 5$ square with $T$ shaped tetrominoes.

AMC 2011 Coloring Problem

Is it possible to cover an $11 \times 12$ rectangle with $19$ rectangles of $1 \times 6$ or $1 \times 7$?

How can this planar map be coloured using $4$ colours?

4 color theorem equivalent to cubic planar bridgeless are 3 edge colorable

A simple game with $n$ points in 3D space - red triangle wins