The winrate for Counterpick v1.0.7 is currently at
Counterpick is a tool for League of Legends that can be described as an advanced form of the hand game Rock-paper-scissors.
Counterpick does not care about the popularity or winrate of a given champion. Instead, it takes every champion, their abilities and their style of play and compares them in a 5v5 matchup using a custom weighting system in order to predict the outcome of a game. Additionally, it tries to create team compositions that covers as many abilities as possible.
If used correctly, Counterpick will help you create some really powerful team compositions (and some really off-meta ones as well).
This is likely the most important question of them all, and the short answer is, probably.
Counterpick is really no different from your own ideas of what a good team looks like, but with over 400 million(!) team compositions to choose from, it's certainly more handy to have a web application doing the math for you.
I always strive to improve Counterpick, and so with each update I simulate over 1000 recently played tournament games and let Counterpick predict the outcome for each of them. The result of that prediction is presented in the "Current Strength" box on top of the page. That way you can see exactly how strong Counterpick is at the moment, and you can even download the result as an Excel file. For example, 60% would mean that Counterpick makes the right prediction in 6 out of 10 games. As a comparison, the highest ranked players in LoL has a win rate of around 56%.
Just remember that individual skill and teamwork is just as important as before, so only play champions you feel comfortable with (important!) and make sure to communicate with your teammates (equally important!).
The goal with Counterpick is to help you build strong team compositions with good synergy that effectively counters your opponents' team. Therefore, you should not use Counterpick to find counters for a specific champion alone. After all, League of Legends is a team based game. Additionally, Counterpick does not rank champions based on win rate or popularity. Instead, it makes suggestions by comparing abilities and style, which is why it sometimes suggests champions that is not considered part of the meta.
Remember that you are in charge and can pick whichever champion you want. If you disagree with a suggestion, simply go with someone else, and Counterpick will do its best to adapt to the new situation.
If you still think that Counterpick repeatedly makes the wrong suggestion, send me a message (see below) and I'll look into it.
Absolutely not. Counterpick is not powered by the Riot API or affecting the client in any way and so it's 100% safe to use.
TLDR: Math happens! Counterpick takes both teams and makes some final calculations so that all champions are treated equally, that’s pretty much it.
Long version: Let's say that each team has picked one champion each and you're about to make your third pick. Since the opponent currently only has one champion, your third pick can only counter that specific champion. Your third pick will also try to synergize with the one teammate that's already been picked and look for champion attributes that the team is lacking.
Let's fast forward to the tenth and last pick. That champion will have five opponents to counter, and four teammates to synergize with. A lot of things has happened since that third pick, and so that third champions score is unlikely to be valid. That's where "Calculate!" comes in. It will make sure that each champion is scored equally as if they all were the last pick. Once that's done, we'll know which team is the strongest.
No one likes an outdated site, so I always try to have Counterpick up to date with the latest League of Legends patch.
Newly released champions will usually be available within 24h.
As of 22 November 2017, there are 139 champions in League of Legends, meaning there's a total of 402073902 (402 million 73 thousand 902) possible team compositions! Ramen226 made a very interesting post if you want to know more how this number was reached.
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