Computer-Generated Chess Problem 03493

Published online for the first time, consider this KRBN vs knp mate in 4 chess puzzle created by a computer using the computational creativity approach which doesn't use any kind of traditional AI or even deep learning. There is no known limit to the quantity or type of compositions that can be generated.

6R1/8/N7/3B4/8/3p3n/3K4/k7 w - - 0 1
White to Play and Mate in 4
Chesthetica v12.41 (Selangor, Malaysia)
Generated on 22 Oct 2021 at 2:09:28 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 or generation date above does not match today's date. White has a rook and a bishop for Black's pawn. Did you find this one interesting or have something else to say? Leave a comment below! Note that not all the chess problems are like this. They cover quite the spectrum of solving ability and there are thousands published already.
Similar Chess Problems by Chesthetica: 00068, 00403, 00419, 01683, 01930, 02242, 02358, 02902.
Solution