1.Qe4? (2.Qc2#[A])
but 1...Kxa4!
1.Qe2? (2.Qc2#[A]/Qd1#[B])
but 1...Kxa4!
1.Qe1? (2.Qd1#[B])
but 1...Kxa4!
1.Qd6? (2.Qd1#[B])
but 1...Kxa4!
1.Qg6? (2.Qc2#[A])
but 1...Kxa4!
1.Qf5? (2.Qc2#[A])
but 1...Kxa4!
1.Qg4? (2.Qd1#[B])
but 1...Kxa4!
1.Qd5? (2.Qd1#[B])
but 1...Kxa4!
1.Rd4+??
1...Kc3 2.Qe3#/Qc4#
but 1...Kxa4!
1.Rf4+??
1...Kc3 2.Qe3#
but 1...Kxa4!
1.Rg4+??
1...Kc3 2.Qe3#
but 1...Kxa4!
1.Rh4+??
1...Kc3 2.Qe3#
but 1...Kxa4!
1.Nb1?? (2.Ra3#)
but 1...Kxa4!
1.Nb5?? (2.Ra3#)
but 1...Kxa4!
1.Nc2?? (2.Ra3#)
but 1...Kxa4!
1.Rc3+!
1...Kxc3 2.Qe3#
1...Kxa4 2.Qb3#