Clan WAr Matchmaking improvements - match less engineered clans in clan war

Clan War Matchmaking – Less Mismatches

Have you ever asked yourself why your Clan is being matched up against much stronger Clans in Clan Wars? I want to explain how the Clan War Matchmaking works, and also bust some myths and common misunderstandings that are out there. With all the recent changes and developments, I have been reworking this guide here from the ground for 2018.

How Clan War Matchmaking Works 2018

Basically, you and your clan members get points for everything you have – you get defensive points depending on the Levels of each of your Defenses, you get attacking points for your Troop Levels and Spell Levels, your Heroes levels, and what you, theoretically, could create to attack someone.

These points are called war weight.

These numbers are added up and are used to match against another Clan with the most similar attacking and defending scores. There is no individual weight counted at any point in the game as of the state of January 2018, so only your whole clan’s weight is counted (along with many other factors, like Town Hall structure, streak and much more that Supercell won’t tell us)

You can learn more about war weight here:

War Weight Calculator & Upgrade Priority for Clan Wars (Updated!)

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When now thinking about it, the system itself sounds quite solid and should create a fair clan war match when clans with similar Town Hall structures and similar offensive & defensive weights are matched, at least in theory!

In reality, it will generate hours of waiting times because you have to wait until such a clan is searching for a Clan War at the same time as your clan does. Mathematically, if you have a clan with 50 members going to war with TH7 to TH11 accounts, there are millions of different possibilities how your Town Hall Levels are and now you add the factor that a matching clan needs the same weight in offense & defense.

This is the reason why the matchmaking does create problems right now. The algorithm simply takes far too long to make a perfect Clan War match, so with the time going by the algorithms starts to also check for clans that are not a perfect match, but a close match – so you might war against a clan that will be slightly stronger or slightly weaker than your clan. This helps not searching for days to find a matching clan but in return created unfair wars.

This was the status quo for a long time, but then suddenly engineering got more and more popular. Engineering means that one is not upgrading the defenses with high weight but focus on upgrading offense stuff like troops & heroes.

This will make the base look weaker for the algorithm, but the person is able to perform with maxed troops 2 full attacks and might get 6 Stars for only offering easier 3 Stars from his base on defense.

Attention! This is not the place where I want to discuss the pro & con of engineering, but you can discuss this in this article here where many people frequently discuss in the comments:

The Future of Engineered Bases - State Right Now

Supercell has made several bigger changes to the war matchmaking algorithm during the past months and I want to show them and what could be the reason why you get mismatches, but first I would like to define what a war mismatch is

What’s a Clan War Mismatch?

Here’s where I see most of the mistake being made – identifying a clear mismatch. One of the most frequent false mismatch identifiers is the “I am matched against a higher Town Hall on the map…”

war matchmaking in clash of clans

Your location in the map has absolutely NOTHING to do with your opponent, it’s just your defensive weight compared to your clanmates – so you see those with higher upgraded defenses above you and those with lower below you. If your position is, let’s say, number 4 it doesn’t mean that you’re exactly as heavily weighted as the number 4 of your war opponent clan.

At a side note, attacking the mirror is the worst war strategy out there but still performed by so many clans – I got a better one for you here:

Grouping - The Best Clan War Battle Day Organization?

But I think you now understand why many think they are mismatched, but they simply don’t know that the number on the map has nothing to do with matching.

A clear mismatch is when your top five Town Halls are, as an example, TH10 and you’re facing maxed TH11 bases on your opponent’s side.

Or like this example here 16 TH10 on top versus 28 TH10 on top

clan war matchmaking mismatch 2018

Preventing Clan War Mismatches in 2018

In the second half of 2017, Supercell reworked a huge part of the war matchmaking algorithm to make it work for the broad player field.

Simply spoken, they worked on matching clans with engineered bases more often with clans that have engineered bases and maxed clans with other maxed clans.

This is still not working 100% perfect, but the results are now a lot better than they have been a couple months ago. Of course, there will never ever be a matchmaking algorithm that will prevent you from getting one single mismatch, but the path is the right although still in need of more tweaking.

So, if you get constant mismatches with your clan, you’re very likely having something in your clan that triggers the signal in the matchmaking algorithm to mark your clan as an engineering clan and even through your clan is not an engineering clan it will get matched preferably against other engineering clans.

The algorithm, as in the state of today, will compare your defensive and offensive weights and identify if there is an imbalance.

Here are the most common things you should check:

  • Do you have any very low Town Halls in your war lineup? A long time ago this helped to lower your weight but, as being said above, will now trigger the “engineering flag”
  • Do you have ANY engineered 8.5, 9.5, 10.5 bases in your lineup? Even one single engineered base can mess up your matchmaking!

I’ve been talking with a ton of people about that, also checked out a lot of clans that wrote me that they still get constant mismatches against engineering clans and bottom line all of them had several .5 bases in their clan and after removing the results got a lot better for them.

You might not believe me, but doing a proper research on your clan members bases you take to war can be worth it when you get mismatches not 1 in 10 times but like 5 or more in 10 times!

Examples like that here are countless:

clan war matchmaking improvement 2018

Check Your Clan For Engineering Score!

So checking every single member can be tough and you can take a simple first step when checking your clan using the website – where you can enter your clan tag and it will show you an “Engineering Score”

Attention! Sometimes some rushed bases are also identified as engineering, but you’ll get a good idea and know if you need to check bases.

Here’s one example of how it can look like:

check your clan for engineering

This clan has an engineering score of 13.9% which means that 14% of all bases are lopsided and either engineered or rushed.

Still, this is not a 100% final result that this is an engineering clan, but you get a good first impression how many bases could cause the trouble and very helpful to start with.

Click here to go to CoCPIT and check your clan. On some mobile devices the search for your clan tag doesn’t work there, so you will need to search for your clans’ name 🙂

Time Matter

There are many myths around when it comes to time, so I also want to briefly cover this here as it has an influence.

As explained in the beginning, mismatches only occur (or at least get more likely to happen), when there’s no perfect matching clan searching for a Clan War at the same time – so by logic you would like to search when most clans are searching so the likelihood of getting a matching clan is a lot higher.

According to, not the day of the week matter (as you can see in the stats below) but when it comes to the time of the day there is a huge difference.

best time for clan war matchmaking

The most popular times are GMT 11:00 to 18:00 which means daytime in Europe & evening in Asia, where most players by numbers play.

Still Mismatching?

Help Supercell improve the algorithm! There is a thread in the official forum where you can report your mismatch and this will get closer analyzed by Supercell.

You will not get a response there, but your data is being processed if you believe you got outmatched.

Click here to go to the thread.

Please share your thoughts in the comments below 🙂



Leave a Reply
  1. Jimmy, great Info. I’m sure you addressed it at some point, but simply restarting the WarSearch after 30-45mins helps avoid mismatches!! I simply set a timer, and get on and if we have no opponent, i will reset the Search. Anytime i fail to reset and time goes over 45-60mins is when we get a MisMatch. Sometimes to our benefit, but usually its a bad Matchup for us! Thanks for all your hard work!! Love this Website!!

    • Thanks 🙂 Yes I did mention it above in the article – the longer it takes the more likely you will get a mismatch (but can also be a match against a weaker clan though), but risking it is not worth it.
      That’s why I also recommended searching in the time where most clans search, this makes it more likely to find a well-matching clan.
      I think 30 minutes are appropriate to restart 👍

  2. Interesting article. I’ve been looking for some info on this matter for about a week after being mismatched severely since christmas. All I’ve been able to find is reddit posts of other clans reporting the same, so thank you for this.

    • You’re welcome 🙂 But also please keep in mind that mismatches can still occur from time to time, but if you see constant mismatches it’s 99.99% the reason because you have one or more engineered bases in your war lineup

      • I don’t particularly mind mismatches, if they happen occasionally. But I dare say that we’ve been mismatched in 95% of our wars since the update. Not nearly as badly mismatched as some of the other examples I’ve seen, but bad enough. We’re trying to find the cause in coming wars. Thanks again. 🙂

      • You might also want to check if there are rushed bases in the lineup, they also tend to mess up with your matchmaking.
        Good luck, I hope you find the reason 🙂

  3. is currently DOWN and is due back up 1/15/18 (after the error is fixed.) The reason you can see the war results of a clan that BLOCKS its war log, is because they have gone to war with a clan that DOESN’T block war results.Those wars are all logged by Also if you have EVER unblocked your clan’s war result, gets to see all your war results too. Great site, I use it all the time.

  4. Not very well researched. dosnt work with internal error. How can that sight see weight of clan, when not at war? All in all complete rubbish.

    • A reasonable critic is always welcome but why is my article “rubbish” when an external website doesn’t work in the moment you’ve been trying?
      By the way, I never had this error myself (though several others here did).
      Also, why are you interested in seeing it when not going to war?! If you not go to war it’s plain logic that it doesn’t show data 😉

  5. How about if they simply didn’t allow you to go to the next level th until you built all of the defenses? Those that already have engineered, would be limited to the th offensive troops available to the defense they have achieved. So, an engineered th11 with lvl 50 heroes may be reduced to lvl 30 for war same as troops. This would balance war based on defense and troop levels would be balanced down to match for war. Would make it fun again.

    • That was in dicussion but the thing is, most of the engineered bases are already existing so the limit wouldn’t change much in the near-mid future.
      Also Supercell is extremely aware that they can’t p*ss off a huge part of the community that use engineering as a strategy, they would lose a ton of players, that’s why they’ve choosen the current path to match engineers vs engineers.
      Automatically adjusting troop levels would kill a lot of fun in clan wars I guess (at least for me) 🙂

    • Thanks so much! We’ve been struggling so long despite our attempts at changing up our line up. I feel like we’ve at least got hope again now 🙂

  6. They need to go by town hall level that will stop the abuse as first level to choosing matches. And people should wait for a good match without complaining. I have been ready to quit after starting my clan 3 years ago. How about we got 5 max queens and we only had 1. That needs to changed too. The customer service people are a joke.

    • In theory going by Town Hall sounds like the easy solution, but if you have a 50v50 war and take TH6-TH11 to war there are 15.6 BILLION different combinations of Town Halls in your clan possible. This means that millions of clans could wait days for a match even when they have a single TH7 more than another clan…
      But in general I agree they should take the Town Hall structure (especially the TH10 & Th11s) way more into account in the MM algorith

  7. I absolutely agree with the last post. I am on the verge of quitting wars altogether because too many people are adding rushed bases with no defenses. Today we are battling a Clan with 3 TH11 bases with our max being a TH 9. In a 20 on 20 war there TH11 bases are ranked 9, 11, and 17. So there TH 11 gets 35 spots of maxed troops in their castle and all they have to do is take out their mirrors which are TH 9, TH 8, TH6. My TH 6 can be defeated with nothing but their CC troops….yet all of my troops can’t even take out their CC troops let alone their base. It sucks. I sure hope someone from COC reads this as this is ruining the Clan wars. Make it equal so people are forced to play the game the way it is supposed to be played.

  8. clan wars should be based on townhalls and hitpoints of all the unit buildings togeteher. like a th10 has no def structures or not should still be matched with any th10 whatever that way townhall abuse can be reduced and the game will be balanced. a th10 maxed out heroes and army with no defence structures is out playing the oppenent 1st base. its ridiculous…bye2…. SUPERCELL pls fix this

  9. My clan rarely gets an ideal or “fair” matchup for wars. I don’t expect this to change. I’m sure efforts are made to improve this but too many people have lost focus on the games entertaining value, instead focusing on gaining unequal advantage. If you have a level 30, th11 with a level 1 cannon, yet your offense is fortified with all troops, maxed out, you have clearly lost sight of the fun behind a great game. As long as these players participate, it will be very little anyone can do to create competitive matchups.

  10. Only way to make it more fare would be to put 50% of total war matchup weight into town hall level, 25% into offensive upgrades and 25% on defences, that way not add defences would become alot less an advantage. I saw matchup we have 2 th11 and face 14 completely maxed offensively en better overall in defence. So if un say, per example à th11 maxed total weight would beaucoup 20000 pts, town hall alone should be 10,000

  11. this guy has no idea what he’s talking about. Clan equity actually makes it WORSE. He forgets the simple fact that each player gets 2 attacks.

    Consider a clan with 25 maxed out TH11s and 25 TH3s (with no defenses). This clan will probably get matched against a (lets for the sake of argument say a homogeneous) clan of TH8s or 9s. The maxed out TH11s will make mince meat or 3 star ALL the bases, while the TH8s can only 3 star the lower half of the bifurcated clan.

  12. Has anyone tough about the fact that supercell could match clans based on the amount of money spent ? Like if you are a big spender you will get an easy match ?

  13. The war match ups are an absolute joke, I would much rather wait 4,5,6 hours and get a fair match up than get the ridiculous impossible tasks that my clan keeps getting. I’m shocked how long supercell have let this go on for

    • it’s very likely that they will change the algorithm up to prevent mismatches in the next update – however it’s the nature of this algorithm to have mismatches here and there.
      But in general, I agree that the matches got way off since more and more clans use engineered accounts

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