BG-MO 1983 Problem 4
Find the smallest possible side of a square in which five circles of radius can be placed, so that no two of them have a common interior point.
Dataset text AI-MO AoPS. Quoted with source.
Solutions
No solution is on olymmath yet. Official and human solutions come first when they arrive. AI solutions come after them, with a label.
Similar problems
These problems have the most words in common with this statement.