Unto Heinonen

Unto Heinonen (25-12-1946 - 17-09-2022) Finnish chess composer and FIDE GRANDMASTER in chess composition

Unto Heinonen "composed everything", as Juraj Lörinc put it on his website, where he shows 5 fairy problems by the Finnish composer. He was also a remarkable Proof Games composer. His article about the Ceriani-Frolkin theme can be read on Problemskak.