1.sg4? - 2.m:c6(A)#
1...d4 2.se6#
1...ud4 2.o:g7(B)#
but
1...of5!

1.q:c6? - 2.o:g7(B)#
1...d4 2.qc5#
1...ud4 2.sc3#
but
1...q:b7!

1.qd7! - 2.o:g7(B)#
1...d4 2.mc4!#
1...ud4 2.m:c6(A)#
Le Grand in Zagoruiko.