What we have here is a 'KQBPP vs krb' mate in 4 chess construct composed autonomously by a computer using the approach known as the DSNS from the sub-field of AI, computational creativity. There is also no proven limit to the quantity or type of legal compositions that can be automatically generated. Any chess position with this many pieces could not possibly have been obtained from known endgame databases. Chesthetica is therefore the real McCoy.
White to Play and Mate in 4
Chesthetica v11.62 (Selangor, Malaysia)
Generated on 27 Feb 2020 at 8:32:38 AM
Some of the earliest chess problems by humans are over 10 centuries old but original ones by computer are very recent. White is over a rook's worth in material but the precise win in this position still needs to be found. Leave a comment below, if you like. Over time, the tactics you see in these puzzles will help you improve your game. Anyway, if standard chess isn't your thing, you might instead like SSCC.