I will try the white lead, sorry if my opinion is still not in compliance with the expectations of Mr @jaki01. I am just learning to play chess.
White
=Bb8 x Mc8
=Gf7 - D5
=Ba1 -a8
Black
=Ma6 x Bc8
=Mc8 - f8 (free)
=Mf8 x Ba8
White Is So Superior.
White can checkmate within five moves! So your solution is not the fastest way. :)
I'll try it another timeYes @jaki01, sorry can not provide a good solution.