What we have here is a 'KQBNPP vs kqr' mate in 4 chess problem generated autonomously by Chesthetica using the relatively new computational creativity approach called the 'DSNS'. Chesthetica is able to generate three-movers, four-moves, five-movers and study-like constructs and also compose problems using specific pieces types fed into it (such as using only a queen vs. rook and knight). Read more about it on ChessBase. 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 9 pieces goes even beyond that and was therefore composed without any such help whatsoever.
White to Play and Mate in 4
Chesthetica v11.88 (Selangor, Malaysia)
Generated on 26 Sep 2020 at 10:34:16 AM
Even with the same version number, each copy of Chesthetica 'evolves' and performs somewhat differently over time. White is significantly ahead in material. Leave a comment below, if you like. Some of these problems may be trivial for you, especially if you're a club or master player but bear in mind that chess lovers can be found at all levels of play. So do check out some of the other problems. You can probably find something more to your taste.
Solution
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