The next move is the big one, so if you want to take a second to look at this position, go ahead. Black to play and mate in 5 from here. Next move in next post.

2. ... Qc1!! Hopefully a double exclamation is not out of place here. What a move! Immediate threat is Qxe3#. The most obvious defense, 3. Rxc1 (or 3. Rc3) loses to 3. ... Rd5#. Also, both 3. Nc2 and 3. Nf5, defending e3, lose to 3. ... Ng4+ 4. Ke4 Qh1#. So that leaves one defense for White.