A 2026 proof shows Ramsey numbers grow forever, settling Erdős's prize question
The Triangle Game, from Zero

A step-by-step visual guide to a coloring game studied since 1955, for which Erdős offered prize money. The guide explains the game, the known results for two and three colors, and the 2026 result that the people-per-color score grows without limit as the number of colors increases. It includes interactive activities and source code.
A result in 2026 showed that it never stops growing.