Computer-Generated Chess Problem 02720

An original 'KQRR vs kqrr' mate in 4 chess puzzle or problem (whichever you wish to call it) composed by a computer using the Digital Synaptic Neural Substrate AI computational creativity method. Chesthetica can compose problems that might otherwise take centuries or longer for human composers to think of, so you may enjoy them right now. The largest endgame tablebase in existence today is for 7 pieces (Lomonosov) which contains over 500 trillion positions, most of which have not and never will be seen by human eyes. This problem with 8 pieces goes even beyond that and was therefore composed without any such help whatsoever.

R5R1/8/7k/2K5/6r1/8/3rq3/1Q6 w - - 0 1
White to Play and Mate in 4
Chesthetica v11.32 (Selangor, Malaysia)
Generated on 8 Aug 2019 at 12:58:01 PMSolvability Estimate = Difficult
Material is even. Both armies also have the same pieces. Did you find this one interesting or have something else to say? Leave a comment below! Over time, the tactics you see in these puzzles will help you improve your game.
A Similar Chess Problem by Chesthetica: 02169
Main Line of the Solution