pentomino shapes are composed of 5 adjacent black squares
loop implies that they each touch two other shapes
logical. no hypotheses needed.
The pleasure in pentomino hanjies comes from solving - seldom from any beauty in the solution!
I had hoped that having the word 'pentomino' in the title would be sufficient in stating that ONLY these shapes would be in the final picture. Without this knowledge there is not a unique solution. Similarly the word 'loop' in the title may be an aid to the unique solution.
If more than one solution each with ONLY PENTOMINO SHAPES has been discovered, then I have made a mistake!
If more than one solution each with ONLY PENTOMINO SHAPES has been discovered, then I have made a mistake!