Computer-Generated Chess Problem 02732

Now, here we have a 'KQRN vs krnnp' mate in 3 chess problem generated by the program, Chesthetica, using the 'Digital Synaptic Neural Substrate' computational creativity method. It does not use endgame tablebases, artificial neural networks, machine learning or any kind of typical AI. The chess board is a virtually limitless canvas for the expression of creative ideas (even by computer). There is no known limit to the quantity or type of compositions that can be generated. The largest endgame tablebase in existence today is for 7 pieces (Lomonosov) which contains over 500 trillion positions, most of which have not been seen by human eyes. This problem with 9 pieces goes even beyond that and was therefore composed without any such help.

5nn1/2rpk3/6Q1/8/4N3/4R3/4K3/8 w - - 0 1
White to Play and Mate in 3
Chesthetica v11.32 (Selangor, Malaysia)
Generated on 29 Aug 2019 at 12:00:43 PMSolvability Estimate = Difficult
These chess puzzles are published in order based on the composition date and time stamp above. Due to the sheer volume of compositions generated, the latest ones may therefore only be published later on. White is significantly ahead in material. Try to solve this as quickly as you can. If you like it, please share with others. Collectively, these puzzles are intended to cater to players of all levels. If you're bored of standard chess, though, why not try this?
Solution