Lazy holiday Byzantium achievement. I restarted my Byzantium run on holiday because I had my laptop without the save file (it was on the desktop).
During my no-CB war with Serbia and Bosnia, the Ottomans declared on Genoa. This pulled in Austria and Hungary, who beat the Ottomans pretty soundly. This netted me two returned cores plus Albania, Epirus and Serbia (an Ottoman core; I had full annexed them) being released. Of course, I immediately conquered both nations giving me a corridor to my Bosnian and Serbian lands and waited for the truce timer to take out Serbia and Bosnia for good.
Shortly after--low on manpower--I thought I could take on the Ottomans mono y mono. I had the Balkans fully occupied, but their war machine recovery was too much. They pushed me back and due to a misclick, I ended up retreating a fight I shouldn't've and secured one province in the peace deal instead of the two I could have had.
Once I recovered, I was able to push through the Ottomans with the help of Austria and Hungary, and then later just Hungary (distant war penalty w/ Austria). It was pretty much over after my second war with them (
i.e., my first joint-ally war) with regards to the Ottomans.
In that very first Ottoman-Austria-Hungary-Genoa war, Hungary was awarded Vidin. Luckily they came to the defense of Brandenburg during the Austrian conquest of some-land-or-another. I was able to start a fabrication and mark it as "strategically vital" before accepting the call-to-arms. Amazingly, in a separate peace deal with Hungary, Austria awarded me the province.
The final Genoese provinces (Scio and Cafa) were secured by declaring on the Papal States but ignoring the wargoal until I could separate peace Genoa for their provinces. I did this because Austria, Hungary, and the Papal States were Genoese allies and I didn't want to go against Austria--I opted for the Papal States-Hungary-Milan-Poland-Genoa vs. Austria-Byzantium war.
Best moment--threatening war on the Ottomans for a smoother northeast border.