You may want to put your king or Alvaro de Luna on the stack for some extra speed. Move the troops from Kirkkilise onto Constantinople.When you see the notification pop up that the ottomans have declared war, pause the game.YouвЂ™ll know itвЂ™s coming because they will move troops to Edirne and probably Selanik or Tirhala. ItвЂ™s not a very hard war to win by any means, so you should be cleaning up the ally and maybe finishing up the siege of Morea when the ottomans declare on byzantium.This will tell you when they declare war on Byzantium Set Ottomans as a nation of interest by clicking on a province, then right clicking the flag in the province menu and clicking the star.First youвЂ™ll want to claim Porto, Beja, and Algarve, and after that itвЂ™s up to you, but I prefer to do states at a time By this time, you should have the ability to start claiming provinces in portugal.This is important because it will allow you to beat them to Constantinople with the help of a maneuver general YouвЂ™ve been improving relations to ensure that theyвЂ™ll give it to you so you can station a few troops in Kirkkilise. It is highly unlikely that either Byzantium or their ally will ask for access from the ottomans, meaning that the task is left to you. You can obviously go and peace out whoever they have allied, which tends to be serbia (although in my experience itвЂ™s better to just leave that for later), but this is where your relations with ottomans start to matter. Once thatвЂ™s out of the way, occupy all of ByzantiumвЂ™s provinces including athens but NOT Constantinople.Otherwise, youвЂ™ll surely get one before your king dies anyway

If you managed to get a royal marriage with Austria, you can expect an event heir very soon.Disinherit your heir, do your estates AFTER DISINHERITING, and no CB Byzantium. Around April/June 1445 youвЂ™re gonna want to put 10k troops on your boats and station them in the Ionian Sea.If for whatever reason you get none of the 3 major countries, influence hungary and improve with them along with scornfully insulting their rival poland to get them to ally you If you donвЂ™t have austria, at least try to get one of aragon / burgundy. ThatвЂ™s all you need, but if you for whatever reason canвЂ™t get one of the other two just ally Savoy and maybe the pope.

Ideally, you have Austria as an ally, and if you arenвЂ™t terribly unlucky you have either Aragon or Burgundy too. Make sure to find time to embargo your rivals without missing an improve relations tick.

YouвЂ™ll want to improve relations with the ottomans in order to get military access from them later, which is going to be very important.

In the average game, my rivals consist of either France/England/Burgundy or France/England/Aragon If not, England is a nice rival as well as morocco, but portugal can work just as well to fill the slot. If Burgundy has rivaled you, rival them back, and itвЂ™s the same for Aragon if theyвЂ™ve rivaled you. Number one is france, since they will be a nice snack for us later on down the line.

For rivals, weвЂ™re gonna be picking quite carefully.

Move your armies and navy to Murcia, and turn both your king and heir into generals.

Leave your merchants how the game has them

Now, you can go ahead and pick your Level 1 Advisors, and leave your national focus to military.

Eu4 castilian civil war