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The_Boominator

Second Lieutenant
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Oct 9, 2021
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After much trial and error, I have found a reliable strategy for reclaiming all Byzantine cores before 1454 in the dreaded 1.33 patch.
No save-scumming, bankruptcy, or merc spam required.

Prep Work (largely optional):
1. There are no required estate privileges, but I highly recommend giving the clergy the "religious diplomats" privilege and perhaps "expansionist zealotry," though I was able to do this strategy twice without the latter. I recommend maximizing nobility influence for manpower recovery. I also strongly recommend leaving at least one nobility privilege slot open for "strong duchies" because you should release Bulgaria after the war.
2. I recommend filling out your force limit. I did this with regular troops just to see if it was possible (it is), but you can also use the free company or any merc band you wish.
3. Ideally you would also conquer Epirus in a 1444 war for +1 force limit, but this is only practical if they have no allies. Not essential, but it is helpful.
4. Get a level 1 military advisor and turn on military focus. It's not essential that you get mil tech 4 for this war, but it is essential that the Ottomans don't get mil tech 4 before you do.
5. Ally Albania. You need Skanderbeg.

Alliances
I managed to do this strategy twice with the following allies with no failures:
Albania, The Knights, Trebizond, Wallachia
I also managed to do this strategy this set of allies twice with no failures:
Albania, The Knights, Trebizond, Serbia

Theoretically you can use Moldavia for this strategy, too, but they always got subjugated in the first few years of my campaign or were rivals with one or more of my allies.
I recommend not setting rivals until after the Ottoman war as your power projection will be inconsequential and rivalries can screw up your potential alliances. For instance, I had Albania ally Genoa in one of my games and I had rivalled Genoa so I could not ally Albania. The same interaction can occur with The Knights and Venice, so don't rival Venice.

Strategy:
You should ally Albania, the Knights, and at least one of the Orthodox powers that will readily ally you. However, you should secure at least FOUR alliances. This will put you over your relations limit, but given how long you will have these allies, you should only be paying <100 extra cumulative diplo power, which is far more preferable than near-bankruptcy or the other ways of cheesing the Ottomans. Ideally you will also ally a power to the east of the Ottomans like Trebizond or Karaman, but this is not necessary. You can also usually grab Crimea if you want to, but this is not necessary and they are fairly slow to ally and give favors.

Having these four allies (plus Athens) should deter the Ottomans from attacking you immediately. As long as the allies are comparable to the ones I just described, the Ottomans should instead attack Candar first (one time they attacked Karaman). To prepare for the war, curry favors and improve relations with all of your allies to get them to join an offensive war. Albania and The Knights have cores on the Ottomans and will join the war on the promise of land, so it not necessary to curry favors with them, which is why I favor them as allies. Note that Wallachia and Serbia have a truce with the Ottomans until 1449 so these powers really only serve to deter Ottoman aggression, though you can usually get them to join the war in 1449.
When the Ottomans declare war on Candar, wait a few months for them to move their armies and attrition their troops a bit. Then, when you feel the moment is right, declare a reconquest war on the Ottomans (I recommend making the war target Selanik). The Ottomans typically keep troops in Europe or move them into Europe too quickly for you to cheese the strait, but this is not an issue. With their troops divided in two wars, you and your allies should be able to take Gelibolu and defeat the Ottoman navy. Blockade the strait and then it's just a matter of hunting down the remaining Ottoman troops in Europe and sieging down the rest of their European provinces. This should give you enough warscore to take all of your cores, war reps, and a bunch of gold. I recommend not taking Edirne in the peace deal, since it is a useful war target for the second war. I also recommend releasing Bulgaria and enacting "strong duchies" and then breaking your alliance with The Knights to get under your relations limit. Alternatively, if the war drags past 1454, you can enact strong duchies and then immediately integrate Athens (be sure to improve relations with them during the war). Your peace deal should resemble the situation in the picture I've attached, which shows the ideal scenario. A healthy reserve of manpower, no loans (thanks to Ottoman gold), and no excess relations. Returning allies' cores is optional, since you will conquer them later and most allies are weak enough to improve trust with them if you don't want to lose the alliance.

Notes:
The AI is kind of dumb about supporting your armies. To ensure you get Skanderbeg in your army, walk over to the Albanians without allowing allies to attach their army to yours, then allow allies to attach their armies. Disable and enable this option until the Albanians follow you.

Make sure you have four allies of decent strength by 1447 or the Ottomans will likely attack you. Being over your relations limit with fairly strong allies will usually make the AI attack Candar first, but otherwise they will march on Constantinople. Unless you go way over your relations limit or secure a major ally like Hungary, the Ottomans will likely attack you within a year of defeating Candar, so make sure to declare war on them while they are still fighting. An offensive reconquest war is better than a defensive war since it gives a discount on cores.

Don't procrastinate on declaring the war. The Ottomans will likely get mil tech 4 before your allies do by virtue of their OP starting ruler, so I actually prefer to declare the war somewhat early so that there is parity in the tech levels of your coalition's forces. The Ottomans also have a lot more dev than you and your buddies and will likely gain manpower faster than you, so the longer you wait, the stronger they are. Plus there is the looming succession of Crimea, so the sooner you declare war the less likely it is that the Ottomans will get Crimea as a march. Don't worry about the Ottomans' allies. The worst case scenario is that they ally Tunis, usually they ally AQ. The Ottomans start guaranteeing Ragusa and frequently guarantee Wallachia or Serbia to spite Hungary, so they seldom ever have more than one ally in the early game.

Siege pips help, but they are not essential. Chances are that at least one of your allies, your monarch, or your heir will have at least one.

If the Ottomans come down hard on you, don't panic and don't pick any fights you aren't certain you will win (be sure there is not a second Ottoman force in the fog of war nearby!). Put the defensiveness edict on Constantinople and dance around the Ottoman armies sieging down provinces. They will break sieges to chase you occasionally and they are constantly reassessing where their troops are most useful. By making a dynamic battlefield, you reduce the Ottomans' commitment to sieges and they will typically go back across the Bosporus to finish Candar or any other eastern powers that invade in the absence of Ottoman troops.

Anyway, I have tried some variation of this strategy and had it work several times now, so I am confident that my results can be readily duplicated by competent players. If you guys have alternative strategies or find this doesn't work for you, let me know and I'll go back to the drawing board. I noticed a lot of people getting anxious about the new 1.33 AI not mothballing forts and being more aggressive against inferior armies, so I figured I'd get cracking on this. It only took a few hours, honestly. It's fairly RNG-proof since I built in flexibility.
 

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maybe you want to edit the first line, doing it before 1554 is not really impressive :)

Seems a good guide, I'll try it out if I do another byz run.
 
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maybe you want to edit the first line, doing it before 1554 is not really impressive :)

Seems a good guide, I'll try it out if I do another byz run.
Yeah, I just edited this. Thanks for pointing it out. It should secure your cores by 1454 at the latest, as my screenshot shows I did it in 1452 with no outstanding loans and spare manpower. I'm going to go through this post again to proof the grammar, punctuation, etc. I probably misspelled some of the country and province names, too.
Typically I declare war on the Ottomans in 1447 or 1448 and I conclude the war in 1452 or 1453. It varies a bit with alliances and the RNG of sieges.
 
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I suspect this strategy may not work on VH. Albania is usually unwilling to ally, and even four allies won't dissuade the Ottomans from attacking you first. The extra 17k Ottoman stack doesn't help, of course.
 
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I suspect this strategy may not work on VH. Albania is usually unwilling to ally, and even four allies won't dissuade the Ottomans from attacking you first. The extra 17k Ottoman stack doesn't help, of course.

Yeah, it's not designed for VH. I'm not sure Byz on VH is even possible. Never tried it, tbh. Don't want to try it either, lol.
 
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For my inaugural run I used a bruteforce strategy based on the Red Hawk 1.31 strategy, though it generally has the caveat that Tunis being the Ottomans' ally makes it harder. Also Golden Century is essential

Build 2 heavies and 4 galleys, merc up at least thrice, grab Albania. Expansionist Zealotry + Morale Advisor is optional but useful. Bunch up in Athens and attack, usually by December 1446. March into Selanik, naval barrage, then assault. Yes, you're assaulting a fully occupied fort, but with microing your losses aren't as heavy, and if you've got a morale bonus from somewhere, that is taken into account. Then do the same at Gellibou. The two Heavies usually means your navy can endure the Turkish fleet, even if you don't sink anything The Ottomans will usually be parked on Constantinople, so stagger your arrival (I like to go City Garrison -> 1 Stack with Vassals/Albania 1 day later -> Mercs 3 days later -> Main battle stack 3 days later) and it breaks them.

Unfortunately I wasn't able to do the strait based stackwipe because Albania was parked in the straits and wouldn't move, so I couldn't open the gate. However the two stacks went in different directions, and I was able to pursue and defeat them. However this is where something in 1.33's morale changes affects how I did, because I had to paddle back and forth several times in both cases, and in manpower costs it was high.

Once I fully occupy the Balkans I occupy as much as I can on the opposite side, parking 1-stacks on the forts to lower war enthusiasm, though Turkish reinforcements can make maneuver tricky, and while in theory I could engage further battles, the more direct aggression of the strategy compared to previous patches already had considerable manpower costs. So I peaced out for areound ~85% Warscore. All my cores, a province to spit out Bulgarian rebels, give Serbia a core so they can be my next tarket, and ~700 gold out of the 800 you could take, which paid back my non-1% Loans.

The advantage of the old Budgetmonk strategy surrounding fort sniping was being able to take near 100% war score without too many battles, your main losses being attrition and maybe a sacrificial 1-stack. I don't think we can do that any more. Upon peace and paying back my 4% loans I had around 100 in the kitty and a -4000 manpower deficit. It's not the cleanest victory, and with practice I could probably get the war score to take that extra 100 gold, but it leaves your expansion path open. Unless the Ottomans guarantee Serbia, then you can grumble. :)
 
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For my inaugural run I used a bruteforce strategy based on the Red Hawk 1.31 strategy, though it generally has the caveat that Tunis being the Ottomans' ally makes it harder. Also Golden Century is essential

Build 2 heavies and 4 galleys, merc up at least thrice, grab Albania. Expansionist Zealotry + Morale Advisor is optional but useful. Bunch up in Athens and attack, usually by December 1446. March into Selanik, naval barrage, then assault. Yes, you're assaulting a fully occupied fort, but with microing your losses aren't as heavy, and if you've got a morale bonus from somewhere, that is taken into account. Then do the same at Gellibou. The two Heavies usually means your navy can endure the Turkish fleet, even if you don't sink anything The Ottomans will usually be parked on Constantinople, so stagger your arrival (I like to go City Garrison -> 1 Stack with Vassals/Albania 1 day later -> Mercs 3 days later -> Main battle stack 3 days later) and it breaks them.

Unfortunately I wasn't able to do the strait based stackwipe because Albania was parked in the straits and wouldn't move, so I couldn't open the gate. However the two stacks went in different directions, and I was able to pursue and defeat them. However this is where something in 1.33's morale changes affects how I did, because I had to paddle back and forth several times in both cases, and in manpower costs it was high.

Once I fully occupy the Balkans I occupy as much as I can on the opposite side, parking 1-stacks on the forts to lower war enthusiasm, though Turkish reinforcements can make maneuver tricky, and while in theory I could engage further battles, the more direct aggression of the strategy compared to previous patches already had considerable manpower costs. So I peaced out for areound ~85% Warscore. All my cores, a province to spit out Bulgarian rebels, give Serbia a core so they can be my next tarket, and ~700 gold out of the 800 you could take, which paid back my non-1% Loans.

The advantage of the old Budgetmonk strategy surrounding fort sniping was being able to take near 100% war score without too many battles, your main losses being attrition and maybe a sacrificial 1-stack. I don't think we can do that any more. Upon peace and paying back my 4% loans I had around 100 in the kitty and a -4000 manpower deficit. It's not the cleanest victory, and with practice I could probably get the war score to take that extra 100 gold, but it leaves your expansion path open. Unless the Ottomans guarantee Serbia, then you can grumble. :)

The reason I felt the need to do this strategy was to replace fort-sniping, since it is no longer viable in 1.33
The new AI will never mothball forts if they can afford them (and the Ottomans certainly can).
The older strategies of nearly bankrupting yourself with mercs and ships also still work, but this solution is far more economical. Most of those strategies were designed for shorter wars so Ottoman ducats could defray the cost of fighting, but the new AI takes longer to beat in wars with the new fort and army behavior, which makes costs go up.
 
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You can still fort snipe, though it's more accurate to call it fort rocket launcher now with the violence you're inflicting on it, so if you build the navy as I do while waiting for your Candar war you should be able to march out from Constantinople, assault, and boom, straits blocked, especially if you vassalize/convert Epirus to get you a few extra ships.
 
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You can still fort snipe, though it's more accurate to call it fort rocket launcher now with the violence you're inflicting on it, so if you build the navy as I do while waiting for your Candar war you should be able to march out from Constantinople, assault, and boom, straits blocked, especially if you vassalize/convert Epirus to get you a few extra ships.
How large of an army does it take to reliably assault Gelibolu?
 
How large of an army does it take to reliably assault Gelibolu?
Because I was using the loans + merc strat I had around 20000 nonhorses to do the job. Also Skanderbeg, though I'm not sure if general pips apply to assaults. As long as you shift-consolidate after each day tick you should prevail in a couple of in-game weeks. I haven't explored the precise mathematical minimums for this however. Meanwhile your starting navy + 2 heavies & 4 galleys is enough cannons to barrage and usually wins the ensuing naval battle.
 
You can win alone without allies at normal difficulty level. The important thing is whether the strategy you made on high difficulty works or not.
 
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You can win alone without allies at normal difficulty level. The important thing is whether the strategy you made on high difficulty works or not.

I don't think this is reliable. My goal was to create a strategy that was both economical and resistant to RNG. You can always merc spam or whatever, but even then your ability to match the Ottomans is tenuous. This guide was not designed for higher difficulties so I have no idea if it is viable for them. However, for new, inexperienced, or casual players, this should be a reliable, economical guide for a Byzantine playthrough.
 
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I wrote a guide for 1.32 on Reddit that proved very popular.

It was similar thinking to yours, loads of allies (Hungary is possible with an insult to rival or dip rep advisor, RM then ally) so the Ottomans attack Candar or Dulkadir first. You then declare, snipe forts and trap them in Anatolia without taking a single battle.

I suppose it's a lot harder now the forts aren't mothballed.

I'll test your strategy but just one question, what do you do if Candar allies Crimea giving the Ottomans access through the whole Caucuses rendering your fleet useless?
 
I wrote a guide for 1.32 on Reddit that proved very popular.

It was similar thinking to yours, loads of allies (Hungary is possible with an insult to rival or dip rep advisor, RM then ally) so the Ottomans attack Candar or Dulkadir first. You then declare, snipe forts and trap them in Anatolia without taking a single battle.

I suppose it's a lot harder now the forts aren't mothballed.

I'll test your strategy but just one question, what do you do if Candar allies Crimea giving the Ottomans access through the whole Caucuses rendering your fleet useless?

This is actually the exact scenario that played out in the game I screenshotted. It didn't matter. The Ottomans actually signed a separate peace in which they did not fully annex Candar to focus on fighting me. With Crimea's level 3 fort, the Ottomans are typically fairly delayed. Nevertheless, you and your allies should be able to beat the Ottomans as long as you pick your battles intelligently. Bear in mind that I had also called Trebizond into the war, which slows the down the Ottomans considerably with their level 3 mountain fort. Occasionally the Ottomans improve relations with Trebizond or you get bad RNG and the Trebizond king is malevolent or something, but I found Trebizond or Circassia to be great allies to keep the Ottomans distracted in the east.
 
Because I was using the loans + merc strat I had around 20000 nonhorses to do the job. Also Skanderbeg, though I'm not sure if general pips apply to assaults. As long as you shift-consolidate after each day tick you should prevail in a couple of in-game weeks. I haven't explored the precise mathematical minimums for this however. Meanwhile your starting navy + 2 heavies & 4 galleys is enough cannons to barrage and usually wins the ensuing naval battle.
Yikes. That's a pretty big stack. Do you estimate that 13k infantry has any chance of pulling it off?
 
My apologies for the necro-post, but I saw one of the top up-voted posts on the EU4 subreddit today was about how difficult it is to play Byz in 1.33 so I figured I would bring up this guide again now that the patch has gone live. I have not tested this strategy since the patch's official release, but I imagine it plays the same way since I have not observed any changes in the patch notes to AI diplomacy behavior, but I have noticed that sometimes the alliance with the Knights can be hard to grab if they raid you (it buries your opinion of them so you can't offer an alliance) so be sure to grab that alliance early if you want it.
Anyway, I apologize again if the necro-post was in poor sport but my intention is only to help people and I feel that it has regained relevance in light of the patch finally going live. Please let me know if you encounter new difficulties and I will try to work around them.
 
My apologies for the necro-post, but I saw one of the top up-voted posts on the EU4 subreddit today was about how difficult it is to play Byz in 1.33 so I figured I would bring up this guide again now that the patch has gone live. I have not tested this strategy since the patch's official release, but I imagine it plays the same way since I have not observed any changes in the patch notes to AI diplomacy behavior, but I have noticed that sometimes the alliance with the Knights can be hard to grab if they raid you (it buries your opinion of them so you can't offer an alliance) so be sure to grab that alliance early if you want it.
Anyway, I apologize again if the necro-post was in poor sport but my intention is only to help people and I feel that it has regained relevance in light of the patch finally going live. Please let me know if you encounter new difficulties and I will try to work around them.

I recently ran BYZ opener in the 1.33 beta, and building free company --> galleys to barrage/assault forts is still viable (no free mothballs). It can vary in difficulty a bit depending on who Ottomans ally (seems to still be mostly Aq Qoyunlu early on) and who their first target is (anybody in Anatolia is vastly preferable).

With fort assault strategy, Skanderbeg is not mandatory and you are looking to race for as much war score as possible by occupying one side of strait. If you're stuck trying to occupy Anatolia, you probably won't be able to take as much as the Ottoman siege of your cap (with defensive edict) puts you on a timer. Only do this if they already moved forces towards Venice when declaring on Albania.

Either way, if you can assault enough war score to block the straits in future wars, you can make a relatively stable situation with most RNG, though fast/great starts need a bit more luck.
 
I got Basileus achi on very hard last week. My starting strategy was ally Muscovy to deter a turkish attack. And securing the russian alliance was pretty easy with the estates and rival insult. After that its just getting new allies and waiting for an oportune moment to attack.