Solution:
1...Nb3+[a] 2.Rxb3#[B]
1...Bf5[b]/Bd5 2.Nd5#[C]
1...Bf2/Bg1/Bd2/Bc5/Bb6/Ba7 2.Qd2#
1...Bf4/Re4 2.Ne4#[A]
1...Bd4 2.Qd2#/Qxc1#/Qe1#/Qc2#
1...Nd3 2.Qxd3#
1...Ne2/Na2 2.Qd3#/Rb3#[B]
1...R4g5 2.Qc2#/Ne4#[A]
1...Rd4/Rxc4 2.Qc2#
3 tries skipped1.Nc6?? (2.Qc2#)
1...Nb3+[a] 2.Qxb3#[D]
1...Bf5[b] 2.Ne4#[A]
but 1...dxc6!
1.Rxg4?? (2.Qc2#/Ne4#[A])
1...Nb3+[a] 2.Qxb3#[D]/Rxb3#[B]
1...Bf5[b] 2.Nd5#[C]
1...Bf4 2.Ne4#[A]
1...Bd2 2.Qxd2#/Qc2#
1...Nd3 2.Qxd3#/Qc2#/Qb3#[D]/Rb3#[B]
1...Rxf6/d5 2.Qc2#
1...Bxg4 2.Ne4#[A]/Nd5#[C]
1...Bd5 2.Qc2#/Nxd5#[C]
but 1...Rxg4!
1.Qe1+??
1...Bd2 2.Qxd2#
but 1...Kd4!
1.Nf3! (2.Qc2#)
1...Nb3+[a] 2.Qxb3#[D]
1...Bf5[b] 2.Ne4#[A]