This has got to be one of the most colourful and “pretty” packing puzzles around. The YACP was Rik van Grol’s IPP37 Exchange Puzzle in Paris last year. With a name like that, I can
This has got to be one of the most colourful and “pretty” packing puzzles around. The YACP was Rik van Grol’s IPP37 Exchange Puzzle in Paris last year. With a name like that, I can