Solution:
1...Qg4[a]/Qh7[a] 2.Bxf6#[A]
1...Qxe4[b] 2.Qb6#[B]
1...Bxe4[c] 2.Qg1#[D]
1...Bd5/Bc8[d]/Ba6[e] 2.Rxd5#[C]
1...Nh5[f]/Ne2[f] 2.Bf2#[E]
1...Nxe4[g] 2.Nc2#[F]
1...c3 2.dxc3#/Qb4#/Qd3#
6 tries skipped1.Re3?? (2.Nc2#[F]/Qb6#[B])
1...Qxe4[b] 2.Qb6#[B]
1...Bc8[d]/Ba6[e] 2.Nc2#[F]/Rd5#[C]
1...Qg5/Qh5/Qf5/Nxe4[g]/Bc6/Ba8/Bg5/Bxh4/Bg7/Bh8/Be5/Be7/Bd8 2.Nc2#[F]
1...c3 2.Qb4#/Qb6#[B]/Qd3#
1...Bd5 2.Rxd5#[C]
but 1...Bxe4[c]!
1.Rd3+??
1...cxd3 2.Qb4#/Qxd3#
but 1...Kxe4+!
1.Bxg6?? (2.Nc2#[F]/Qb6#[B]/Qg1#[D]/Bxf6#[A])
1...Be4[c] 2.Bxf6#[A]/Qg1#[D]
1...Bc8[d]/Ba6[e] 2.Nc2#[F]/Rd5#[C]/Bxf6#[A]/Qg1#[D]
1...Nh5[f] 2.Nc2#[F]/Qb6#[B]/Qg1#[D]/Bf2#[E]
1...Ne2[f] 2.Nc2#[F]/Qb6#[B]/Bf2#[E]/Bxf6#[A]
1...Ne4[g] 2.Nc2#[F]
1...fxg6 2.Ne6#/Bxf6#[A]
1...Rge8/Rbe8/Bg5 2.Nc2#[F]/Qb6#[B]
1...c3 2.dxc3#/Bxf6#[A]/Qb4#/Qb6#[B]/Qg1#[D]/Qd3#/Rd3#
1...Bc6/Bxf3/Ba8 2.Nc2#[F]/Qg1#[D]/Bxf6#[A]
1...Bd5 2.Bxf6#[A]/Rxd5#[C]
1...Bxh4/Bg7/Bh8/Be5/Bd8 2.Nc2#[F]/Qb6#[B]/Qg1#[D]
1...Be7 2.Nc2#[F]/Qg1#[D]
1...Nh1/Nf1 2.Nc2#[F]/Qb6#[B]/Bxf6#[A]
1...Nf5 2.Bxf6#[A]
but 1...Rxg6!
1.Bxb7?? (2.Qb6#[B]/Qg1#[D]/Rd5#[C])
1...Qe4[b] 2.Qb6#[B]
1...Nh5[f]/Ne2[f] 2.Rd5#[C]/Bf2#[E]/Qb6#[B]
1...Ne4[g] 2.Nc2#[F]/Rd5#[C]
1...Rge8/Rbe8/Nh1/Nf1 2.Rd5#[C]/Qb6#[B]
1...Rgd8/Rbd8 2.Qb6#[B]/Qg1#[D]
1...Rxb7/Bg5 2.Rd5#[C]
1...Qg5 2.Nc2#[F]
1...Qh6 2.Nc2#[F]/Rd5#[C]/Qb6#[B]
1...Qh5 2.Nc2#[F]/Qg1#[D]
1...Qf5 2.Qg1#[D]
1...Qd3 2.Bxf6#[A]/Qb6#[B]
1...Qc2 2.Bxf6#[A]/Nxc2#[F]/Qb6#[B]/Qg1#[D]
1...Nf5 2.Nc2#[F]/Rd5#[C]/Rf4#/Qb6#[B]/Qe4#
1...Bxh4/Bg7/Bh8/Be5/Be7/Bd8 2.Rd5#[C]/Qg1#[D]
but 1...Qxb1+!
1.Qb2+??
1...c3 2.Qb4#
but 1...Kxe4!
1.Qb5?? (2.Qxc4#)
1...Bd5/Ba6[e] 2.Qxd5#
but 1...Kxe4+!
1.Rf4! (2.Nc2#[F]/Qb6#[B]/Qg1#[D])
1...Qxe4[b] 2.Bxf6#[A]
1...Bd5/Bxe4[c] 2.Rxd5#[C]
1...Bc8[d]/Ba6[e] 2.Nc2#[F]/Rd5#[C]/Qg1#[D]
1...Nh5[f]/Ne2[f] 2.Nc2#[F]/Qb6#[B]/Bf2#[E]
1...Nxe4[g] 2.Bf2#[E]
1...c3 2.Qb4#/Qb6#[B]/Qg1#[D]/Qd3#
1...Qg5/Qh5/Qf5/Bc6/Ba8/Bg5/Bxh4/Bg7/Bh8/Be5/Be7/Bd8 2.Nc2#[F]/Qg1#[D]
1...Nh1/Nf1 2.Nc2#[F]/Qb6#[B]
1...Nf5 2.Nc2#[F]/Qb6#[B]/Bc6#/Bxb7#
1.Rc3! (2.Rxc4#)
1...Bd5/Ba6[e] 2.Rxd5#[C]
1.Qc2! (2.Qxc4#)
1...Bd5/Ba6[e] 2.Rxd5#[C]
1...c3 2.dxc3#/Qd3#/Qa4#