PUZZLE, PUZZLE (MATE IN 2)
Instead of Qb1 why doesn't black play Pe5 which would allow for a Kd5 escape. Even if white plays Rxe5+ black could sacrafice the queen (Qxe5) to get out of mate.
I also agree: mate in 1 with Nf6+
First, you have to change g8 into white bishop per GINOPFRITZ, so there's no Nf6#. the N on g8 is a white Bishop.
1. Qb1 ... 2. with lots of variations depending on what black's next move.![]()
if black moves:
Qxa3 then Pc3#
Qb3 then Pxb3#
Qc3 then Nxc3#
Qd3 then Pxd3#
Qe3 then Rxe3#
Pxd5 then Bxd5#
any other moves then Qb4#