What is known about the match-making algorithm? Help us flush this out.

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Originally Posted by iceageg

after the last patch supposedly TH level was worked into the equation as a secondary system.

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I too have read that. I believe (don't quote me) it was in the release notes? Or maybe I am thinking of the blurb about not being so quick to establish a match? Don't remember for sure. But I would argue that the match making is worse since the release. At least in our case.

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Originally Posted by iceageg

Moral of the story is, TH has nothing to do with how strong/week/good/bad/developed/rushed a given village is. All it indicates is what the COULD be.

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I agree with this statement....mostly. The bottom line is, until you see the opponents in action there is no clear indicator of how the war will play out. I don't mean to imply otherwise. With that said, TH level is a baseline for the structures and troops available to that player. Those players running .5 strategies have used the matching system to their advantage to great success because of the troops their TH level affords them.

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Originally Posted by iceageg

The fact that you only posted the TH numbers from each war implies that you did not analyze the matchups closely.

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In my original post I specifically stated that 'war 2' opponents had some rushed bases and the match up was not as uneven as it would appear on TH level alone. I posted the TH numbers in the interest of simplicity and brevity.

But that highlights the real spirit of my thread. How does the match making algorithm compare two bases and declare them equal(ish)? I know you can't just say all TH10s are the same, the difference between a fully maxed TH10 and a new TH10 is astronomical. Even at TH8 the difference is sizeable. But how is it that in 2 of our last 3 wars we've had a new TH9 'matched up' with a middle of the road TH10 with lvl 25+ royals (to our TH9s <10)?

Here is a fun little experiment for sister clans .... (Note: We have done this with 3 of our sister clans and it has worked twice.)

1. After a war, figure out your "base value" for each member of your clan (i.e. visit your opponent after the war is over). Have your sister clan do the same.

2. Do a little math. Figure out who needs to swap clans from A to B and from B to A for a couple of days so that each clan has the same "value."

3. Push the start war button at the same time.

4. Get matched against each other ... have a fun mixer, or put out terrible bases for a giant tie. Whatever floats your boat.

5. Note: This will probably only work once every few months - I imagine the algorithm tries not to match up the same clans over and over.

If you can get that to work, then you can try to get silly ...

1. Create a new clan.
2. Send half your members so that value of new clan = value of original clan.
3. Let original clan stomp the ♥♥♥♥ out of the new clan for XP and Loot.

Repeat, but now the other half create the new clan so everyone has a turn to get winning war loot.

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Originally Posted by Reddigulous

How does the match making algorithm compare two bases and declare them equal(ish)?

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The algorithm compares clans, not bases.

It's the same reason that the numbers 10 10 10 6 6 6 and 10 9 8 8 7 6 have the same average.

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Originally Posted by zachhhbro

I don't know why one of your clans would have a different experience than the other if the makeups are very similar, but I would suggest adding a couple offensively strong TH9's and getting rid of the 5's, 6's, and some of the 7's. I believe you should have a minimum of 3 or 4 TH9's that can three star other 9's. This will leave your 10's to deal with the enemy 10's and you won't have to get your 8's to attack enemy 9's. We like our makeup to be about 1/8 TH7's, 1/4 TH8's, 1/2 TH9's, and 1/8 TH10's. Too many 10's is bad and too many low guys seems to be bad as well.

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I wonder if you are on to something. In my original clan we have 2 players below TH7. In the 'second' clan I participate with they have no one below TH7. But surely that wouldn't affect us adversely at the top of the batting order, would it?

With that said, we do have a small chasm between our TH10s and our TH9s. Our TH9s are mostly new TH9s and our TH10s are middle of the road. We are trying to catch those TH9s up though.

But I wonder if clans with less TH level variety have more consistent war matchups.

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Originally Posted by Uthrac

The algorithm compares clans, not bases.

It's the same reason that the numbers 10 10 10 6 6 6 and 10 9 8 8 7 6 have the same average.

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Really? Well I think that explains it. I don't want to call you a liar, but I do hope you are lying. This makes complete sense when comparing the two clans.

So a clan of ten members with half TH10s and half TH4s could easily be matched up against a clan of all TH8s (assuming the TH10s are rushed, etc, etc)?

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Originally Posted by Uthrac

I would be surprised if the algorithm is much more than:

1. Calculate the "value" of each base (total defense and offense).
2. Sum the values.
3. Match with a clan with similar sum.

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This is what I think it most likely is as well, pretty sure Supercell has stated this, but the actual weighted details of offense/defense/walls is what I kind of wish I knew more about.

But if that's the case, that's why you don't want to have only a few well-developed TH10/9s with bunch of TH6s in your clan, as that could average out to you getting a bunch of premie TH9s which can 3-star your TH9s down and 2-star your TH10s, while your TH10/9s don't have enough attacks to effectively clean the board and then you're relying on TH5/6s to pull their weight on the bottom 1/3rd or so. Losing wars with the bottom 2/3rds to 3/4s not totally cleaned is not a position you want to be in war after war, especially if your top 2/3rds are decent attackers. That becomes an issue of your TH spread being too heavily skewed on the low TH-level end.

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Originally Posted by Reddigulous

Really? Well I think that explains it. I don't want to call you a liar, but I do hope you are lying. This makes complete sense when comparing the two clans.

So a clan of ten members with half TH10s and half TH4s could easily be matched up against a clan of all TH8s (assuming the TH10s are rushed, etc, etc)?

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1. Well, I'm guessing .... I'm not a coder for SuperCell. :D

2. I doubt it is quite as straightforward as averaging TH levels ... the building values could be quadratic or exponential growth instead of linear.

3. Overall ... just trying to be illustrative. My guess is that each building has a value; each troop level has a value; the algorithm adds them up for the whole clan and gets a clan war value - - then finds another clan with a similar value.

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Originally Posted by Reddigulous

Really? Well I think that explains it. I don't want to call you a liar, but I do hope you are lying. This makes complete sense when comparing the two clans.

So a clan of ten members with half TH10s and half TH4s could easily be matched up against a clan of all TH8s (assuming the TH10s are rushed, etc, etc)?

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Originally Posted by Uthrac

1. Well, I'm guessing .... I'm not a coder for SuperCell. :D

2. I doubt it is quite as straightforward as averaging TH levels ... the building values could be quadratic or exponential growth instead of linear.

3. Overall ... just trying to be illustrative. My guess is that each building has a value; each troop level has a value; the algorithm adds them up for the whole clan and gets a clan war value - - then finds another clan with a similar value.

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It is not as simple as just averaging everything together, but each base has a specific weight attached to it. Add up the weights of each base for an entire side in war and that would be the clan's weight for that particular war. The opponent matched to that clan should be within some random % set by SC, but the total clan weight for both clans should be relatively similar. More realistically, a clan with 5 TH10's and 5 TH4's would never match to an all 8 or all 7 clan, but it probably could match to a clan of 7 TH9's and 3 TH10's. Again, the TH level means nothing, but in my example I'm assuming each base is relatively well upgraded and the 10's on either side are better than the 9's, but the 4's in the first clan are pulling down the clan weight enough to match a clan with fewer strong TH10's.

You might wanna calculate the weight of each defense. There are videos on YouTube of this. This is why the 8.5 is so affective. You just have bases that bring in harder people. That's really your own fault.
http://youtu.be/3_k8cVY3WAI