(21.07.2018) Our original 900 is a wonderful helpmate by the Bulgarian maestro Petko Petkov which according his opinion is one of the best his helpmate in the recent years!
(19.07.2018) An attractive fairy original with KoKo chess by Anatoly Stepochkin!
P.S. After the publication of the problem the author inform us that it was also sent to other tourney, so he exchange it with the fairy original here which is now published as 898.