Here is a 'KRBBN vs knp' four-move chess puzzle created by the prototype computer program, Chesthetica, using the fairly new computational creativity approach called the 'DSNS'. There is also no proven limit to the quantity or type of legal compositions that can be automatically generated. The largest endgame tablebase in existence today is for 7 pieces (Lomonosov) which contains over 500 trillion positions, most of which have not been seen by human eyes. This problem with 8 pieces goes even beyond that and was therefore composed without any such help.
White to Play and Mate in 4
Chesthetica v12.29 (Selangor, Malaysia)
Generated on 6 Apr 2021 at 2:28:40 PM
Most changes to Chesthetica that result in a slightly higher 'version number' are simply to improve the interface, by the way. White has a decisive material advantage in this position but the winning sequence may not be immediately clear. If this one is too easy or too difficult for you, try out some of the others. Feel free to copy the position into a chess engine and discover even more variations of the solution.
Similar Chess Problems by Chesthetica: 00247, 02478.
Solution
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