Now, this is a 'KQRRP vs kqrbbnppp' #3 chess problem generated by a computer using the DSNS computational creativity approach which doesn't use any kind of traditional AI. Chesthetica has the creative ability to compose positions that may otherwise take centuries to arise in an actual game, if ever. You can learn about how these constructs are selected here. 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 14 pieces goes even beyond that and was therefore composed without any such help.