Computer-Generated Chess Problem 02486

Take a look at this 'KBNN vs kpp' mate in 4 chess problem generated by Chesthetica using the relatively new computational creativity approach called the 'DSNS'. Chesthetica is able to generate various types of mates and study-like constructs and also compose problems using specific combinations of pieces fed into it (such as using only a queen vs. rook and knight). Learn more about it on ChessBase.

8/8/8/8/8/5pNK/p4k1N/2B5 w - - 0 1
White to Play and Mate in 4
Chesthetica v10.97 (Selangor, Malaysia)
Generated on 30 Jan 2019 at 12:57:13 PMSolvability Estimate = Moderate
Most changes to Chesthetica that result in a slightly higher 'version number' are simply to improve the interface, by the way. White is over a rook's worth in material but the precise win in this position still needs to be found. Leave a comment below, if you like. Collectively, these puzzles are intended to cater to players of all levels.
Similar Chess Problems by Chesthetica: 00529 01694
Main Line of the Solution (Skip to 0:35)