Is it b:7 to c:8?
good, just one more!
...
those are the only three in the position
there are some M2s, but you asked for M1s and I gave the only 3...
Qxc8#
bxc8=Q
Bxc8=R
And for black, Nf2#
Nope
Bxf7 or Kc7
There are absolutely only 3 mates here
First to get it gets a taco!