Computer-Generated Chess Problem 03849

Now, this is a 'KQRBN vs kqrbb' mate in four chess puzzle by a computer program, Chesthetica, using the Digital Synaptic Neural Substrate (DSNS) computational creativity approach. It doesn't use endgame tablebases, neural networks or any kind of machine learning found in traditional AI.

2Nb3r/7B/4bk2/3Q4/8/3q4/8/4K1R1 w - - 0 1
White to Play and Mate in 4
Chesthetica v12.60 (Selangor, Malaysia)
Generated on 6 Sep 2022 at 12:53:26 PMSolvability Estimate = Difficult
Sometimes an earlier version of Chesthetica is credited for a more recent problem because that version was still running on that computer at the time. What was the machine 'thinking' when it came up with this? Did you find this one interesting or have something else to say? Leave a comment below! Take some time to study the analysis and you might appreciate the puzzle a little more.
A Similar Chess Problem by Chesthetica: 02122
Solution