Your puzzles are unique and very clever, Cos, and a several are downright diabolical. Even when my gray matter was turning to mush and only a few tufts of hair were left on my head, I admired the devilish mind that created them. Also, the rewards for completing a puzzle are very impressive!
Winter is an etching, spring is a watercolor, summer is an oil painting and autumn a mosaic of them all. -Stanley Horowitz