Sher-e-Hindustan With respect to Vienna; this was the end of their supply-lines. 

The need to capture Vienna became paramount for Mehmed as he needed to expand for greater wealth. King Sobieski (I have been to Olesko) had a pact with Austria to help in case of war. Even though Sobieski had a much smaller force than Mehmed, his word of honour was most important. 

The Polish cavilers defeated Mehmed's forces. I have walked the fields of Vienna and the fields of Blackbird; the battle in the Balkans were the Ottomans would also be defeated. Poland, Hungary, Balkans and Romania were all great eventual loses for the Ottoman's. 

Good riddance to them