KAN's blog

Codeforces Blitz Cup 2025
By KAN, 13 hours ago, In English

Hi Codeforces!

As announced earlier, we’re holding an individual competition, the Codeforces Blitz Cup 2025, to celebrate 15 years of Codeforces. The tournament features PvP matches in a novel Blitz format, where every second (literally!) counts. In a 40-minute match, the opponents rush to solve each consecutive problem quicker than the rival. One needs to come up with a correct solution, think over the optimal implementation, and code cleanly: only the first one to get a problem correctly claims the points.

Complete Blitz rules

We’ve selected 64 strong participants who compete against each other in a single-elimination bracket. The first round has just concluded, and we’ve already seen both head-to-head battles and incredible comebacks. You can see some of the exciting screencasts of Round 1 in the streams section. Complete results (also shown below).

Results of Round 1

Starting today until Friday, Round 2 matches are held. Here’s the lineup:

We will stream featured matches of Round 2, and we encourage the participants to stream on their own. We’ll update the lineup above with the start time of the matches, so you can come and cheer!

On the weekend, March 8th and 9th, we’ll stream top 15 matches of the Blitz Cup. The streams will feature both opponents coding side by side, as well as commentary and discussion. Find the schedule of the final matches here and stay tuned in the streams section!

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12 hours ago, # |
  Vote: I like it +73 Vote: I do not like it

Wow, can't wait to see when tourist and conqueror_of_tourist meet one another in a Blitz round.

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    12 hours ago, # ^ |
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    Was about to write the same comment :)

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12 hours ago, # |
  Vote: I like it +10 Vote: I do not like it

The type of game is very interesting. I like it very much.

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11 hours ago, # |
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I'd like to see jiangly vs tourist in a Blitz round.That will be a wonderful game!

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10 hours ago, # |
  Vote: I like it +13 Vote: I do not like it

Each match lasts 40 minutes, with 7 problems of increasing difficulty (worth 2, 3, 4, 6, 8, 10, and 12 points).

Is this a typo for 1, 2, 4, 6, 8, 10, and 12 points? I only see 1, 2, 4, ... points on the score tables.

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    10 hours ago, # ^ |
      Vote: I like it +16 Vote: I do not like it

    The "score distribution" was changed for round 2 and further. Initial scores were 1,2,4...

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10 hours ago, # |
  Vote: I like it +5 Vote: I do not like it

Will the blitz game be released publicly to codeforces users at any time?

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    8 hours ago, # ^ |
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    I don't think that's possible since the old problems are used. And with the huge amount of low-rated users, there's no way to ensure the fairness (ie: make sure they don't violate the rule).

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9 hours ago, # |
  Vote: I like it +76 Vote: I do not like it

Justice for oursaco

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8 hours ago, # |
  Vote: I like it +5 Vote: I do not like it

Please make this blitz format a common thing. Would love it if Codeforces became like Lichess

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8 hours ago, # |
  Vote: I like it +16 Vote: I do not like it

In the competition, either my brain is too fast for my hands, or my hands are too fast for my brain—either way, they refuse to sync up!

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8 hours ago, # |
  Vote: I like it +56 Vote: I do not like it

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8 hours ago, # |
  Vote: I like it 0 Vote: I do not like it

Jiangly vs Tourist would be an interesting match to see

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8 hours ago, # |
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Will this concept be available for common use soon or later? or is it already available? I really would like to choose some problems and compete against my friends. If I can already do that can someone explain how to do it.

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8 hours ago, # |
  Vote: I like it +24 Vote: I do not like it

faker vs Bin

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6 hours ago, # |
  Vote: I like it 0 Vote: I do not like it

Can`t wait

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3 hours ago, # |
  Vote: I like it -8 Vote: I do not like it

Where is dominator69

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3 hours ago, # |
  Vote: I like it +1 Vote: I do not like it

can we know the problem after the contest end?

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