Computer-Generated Chess Problem 03227

Here is a new 'KRRNP vs kbp' mate in 4 chess construct composed autonomously by the program, Chesthetica, using the approach known as the DSNS from the sub-field of AI, computational creativity. Chesthetica is able to generate mates in 2, mates in 3, mates in 4, mates in 5, study-like constructs and also compose problems using specific combinations of pieces fed into it (e.g., instructing it to compose something using perhaps two queens vs. four rooks). Read more about it on ChessBase.

b7/5k2/4RP2/1N6/8/8/1p2K3/6R1 w - - 0 1
White to Play and Mate in 4
Chesthetica v12.26 (Selangor, Malaysia)
Generated on 1 Mar 2021 at 5:50:18 AMSolvability Estimate = Difficult
Humans have been composing original chess problems for over a thousand years. Now a computer can do it too. Get a glimpse into the 'mind' of a computer composer. If this one is too easy or too difficult for you, try out some of the others. Feel free to copy the position into a chess engine and discover even more variations of the solution. If you're bored of standard chess, though, why not try this?
A Similar Chess Problem by Chesthetica: 01926
Solution