Carol Leith started Monkeypuzzle in 1976 and her designs included a wide range of freestanding sculptural jigsaw puzzles. Some of the larger ones were specifically commissioned by galleries and were only produced in limited editions. Carol Leith started Monkeypuzzle in 1976 and her designs included a wide range of freestanding sculptural jigsaw puzzles. Some of the larger ones were specifically commissioned by galleries and were only produced in limited editions. All of the puzzles were hand cut out of highest quality 12mm birch plywood and were finished by hand in Norfolk, England.