These jigsaws might be just the thing for a friend of relative who is beginning to struggle with ordinary jigsaws. They have eleven large pieces and are designed to be assembled on a specially printed backing board that provides prompts to help people with dementia to complete a puzzle more easily.  London Bus picture.   11 Piece Wooden Jigsaw Puzzle 40 x 29 cm.  Postage included. VAT added at checkout.

Dementia friendly jigsaw