1. ...Ng3+
●2. Kg1 e2+
●●3. Rf2 e1=Q+ 4. Kh2 Nf1++
●●●5. Kg1 Qh2#
●●●5. Kh1 Qh2#
●●3. Qf2 exf1=Q+ 4. Kh2 Qh1#
●●3. Kh2 Nxf1++ 4. Kh1 Qh2#
●2. Kh2 Nxf1++
●●3. Kh1 Qh2#
●●3. Kg1 e2+
●●●4. Kh1 Qh2#
●●●4. Qf2 Qh2#