Last week I left you with this endgame study (David Gurgenidze Akaki 1991).

It solves as follows:

1. Nd6 c2 2. Nc4+ Kb5 3. Ne5! c1Q 4. a4+! Ka5 5. Kb7!, threatening Nc6+ and meeting Kb4 with Nd3+.

Well done to everyone who solved this!