KöMaL 2009 K222
The diagram below shows the nets of four cubes unfolded in a plane. There are line segments painted on the surface of each cube, and these are also shown in the diagram. (No line is drawn along the edges of the cubes.) For which cube will the lines form a closed loop?
Official text KöMaL. 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.