Solution:
1...Nd3/Ne2/Na2 2.Nxd3#
1...Bd7/Bb7/Ba8 2.Nxd7#[A]
1...Qf4/Qg7/Qe6/Qe8 2.Qxf4#[B]/Qe6#[C]
1...Qf3/Qf2/Qf1/Qf8 2.Qe6#[C]
1...Qg8 2.Qf4#[B]
1.Bf5? (2.Qf4#[B])
1...Qxf5[a] 2.Qd4#[D]
1...Nd3/Ne2 2.Nxd3#
but 1...d4!
1.Bxg6? (2.Qd4#[D])
1...Qxg6[b] 2.Qf4#[B]
1...Ne2 2.Nd3#
1...Qf4 2.Qxf4#[B]/Qe6#[C]
but 1...hxg6!
4 tries skipped1.Bd3?? (2.Qd4#[D])
1...Nxd3 2.Nxd3#
1...Qf4 2.Qxf4#[B]/Qe6#[C]
but 1...Ne2!
1.Bc2?? (2.Qd4#[D])
1...Nd3/Ne2 2.Nxd3#
1...Qf4 2.Qxf4#[B]/Qe6#[C]
but 1...bxc2!
1.Bb1?? (2.Qd4#[D])
1...Nd3/Ne2 2.Nxd3#
1...Qf4 2.Qxf4#[B]/Qe6#[C]
but 1...c2!
1.Qg3+??
1...Qf4 2.Qxf4#[B]
but 1...hxg3!
1.Bxd5! (2.Qe4#)
1...Kxd5/Qf5[a] 2.Qd4#[D]
1...Bxd5 2.Nd7#[A]
1...Qf4/Qf3 2.Qe6#[C]
1...Qxd5 2.Qf4#[B]