Computer-Generated Chess Problem 03106

Take a look at this 'KRRBB vs kqrb' mate in 3 chess puzzle created by Chesthetica using the relatively new computational creativity approach called the 'DSNS'. You can learn more about the DSNS here. Any chess position over 7 pieces could not possibly have been derived from an endgame tablebase which today is limited to 7 pieces.

8/2B5/8/7K/4k3/2br4/B1R2R2/2q5 w - - 0 1
White to Play and Mate in 3
Chesthetica v12.02 (Selangor, Malaysia)
Generated on 18 Nov 2020 at 4:13:46 AMSolvability Estimate = Difficult
White actually has less material than Black. The white army is down by about 1 (Shannon) pawn units in value. 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.
A Similar Chess Problem by Chesthetica: 02382
Solution