Cat Among the Pigeons

Pentaplex also supplies four circular jigsaw puzzles each of 500 pieces - the Pentaplex Masterclass

Pentaplexity, Perplexing Pisces, Perplexing Poultry, and Cat Among the Pigeons is a portion of a Penrose tiling. The pieces are the standard interlocking jigsaw shapes, but the challenge arises from the taxing nature of the Penrose designs.

The puzzles are the invention of Sir Roger Penrose, one of the world's top mathematicians, who was joint winner with Stephen Hawking of the 1988 Wolf Prize for Physics. His work on non-periodic tessellations is the basis of the Pentaplex range of puzzles.