Computer-Generated Chess Problem 03775

What we have here is a 'KQB vs kbn' mate in four chess puzzle by the program, Chesthetica, using the fairly new computational creativity approach known as the DSNS (Digital Synaptic Neural Substrate). 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 (e.g., composing something original using only a rook vs. five pawns). Read more about it on ChessBase.

3kBn2/5K2/2Q5/2b5/8/8/8/8 w - - 0 1
White to Play and Mate in 4
Chesthetica v12.58 (Selangor, Malaysia)
Generated on 18 Jul 2022 at 6:46:09 AMSolvability Estimate = Difficult
Even with the same version number, each copy of Chesthetica 'evolves' and may perform somewhat differently over time. 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. 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. Therefore, do consider some of the other problems available. You can probably find something more to your taste. If you'd like to learn something interesting about computer chess problem composition, consider this.
Similar Chess Problems by Chesthetica: 00020, 00196, 00301, 01831.
Solution