Computer-Generated Chess Problem 02994

Here is a 'KRRBPP vs krp' mate in 4 chess puzzle created by Chesthetica using the DSNS computational creativity approach which doesn't use any kind of traditional AI. Chesthetica has the creative ability to compose positions that may otherwise take centuries to arise in an actual game, if ever. There is also no proven limit to the quantity or type of legal compositions that can be automatically generated.

4k3/8/1K6/3P4/1PR1p3/7B/4rR2/8 w - - 0 1
White to Play and Mate in 4
Chesthetica v11.79 (Selangor, Malaysia)
Generated on 22 Jul 2020 at 5:00:35 AMSolvability Estimate = Difficult
Chesthetica, especially if running on multiple computers or operating system user accounts, is capable of generating far too many compositions than can be published in a timely fashion here. The newer ones will therefore only be published some time later. This is why the composition date above does not match today's date. White is over a rook's worth in material but the precise win in this position still needs to be found. If this one is too easy or too difficult for you, try out some of the others. Solving chess puzzles like this can be good for your health as it keeps your brain active. It may even delay or prevent dementia.
Solution