Now, here we have a 'KRRBNP vs knppp' mate in 4 chess puzzle or problem (whichever you wish to call it) composed by a computer program, Chesthetica, using the approach known as the DSNS from the sub-field of AI, computational creativity. Depending on the type and complexity of the problem desired, a single instance of Chesthetica running on a desktop computer can probably generate anywhere between one and ten problems per hour. 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 11 pieces goes even beyond that and was therefore composed without any such help whatsoever.
White to Play and Mate in 4
Chesthetica v12.19 (Selangor, Malaysia)
Generated on 19 Jan 2021 at 11:56:13 PM
A seemingly earlier version of Chesthetica on a problem composed later (based on the date and time stamp) simply means that version may have been running on a different computer or operating system user account. White has a decisive material advantage in this position but the winning sequence may not be immediately clear. Why not time yourself how long it took you to solve this? Collectively, these puzzles are intended to cater to players of all levels.
A Similar Chess Problem by Chesthetica: 01314
Solution
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