Take a look at this 'KRRBNNP vs krrbnnp' mate in 3 chess problem generated autonomously by Chesthetica using the relatively new computational creativity approach called the 'DSNS'. You can learn more about the DSNS here. The largest (Lomonosov) tablebase today is for 7 pieces which contains over 500 trillion positions. With each additional piece, the number of possible positions increases exponentially. It is therefore impossible that this problem with 14 pieces could have been taken from such a database.
White to Play and Mate in 3
Chesthetica v10.98 (Selangor, Malaysia)
Generated on 3 Feb 2019 at 8:49:02 PM
If you notice an earlier version of Chesthetica listed with a newer problem, that simply means an earlier version may have been running on a different computer or OS user account. The material value is about equal. Both armies also have the same pieces. Try to solve this puzzle. Do try some of the others in the series as well before you go. Collectively, these puzzles are intended to cater to players of all levels.
Main Line of the Solution (Skip to 0:35)
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