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Learn / Rating, XP and streaks

How the numbers actually work.

Three counters, each with a job. Rating says how well you solve. XP says how much you've done. Streaks say whether you showed up. None of them can be bought with a Run button.

01Rating

Every rank is earned on Accepted.

Every account starts as a Novice. Accepted submissions move the rating; nothing else does. Five ranks — Novice, Apprentice, Adept, Expert, Master — sit on fixed thresholds, so “Adept” means the same thing for everyone, and your profile always shows exactly how far the next rank is.

It's deliberately simple. A rating you can explain in a sentence is one you can actually chase.

Tier thresholds

Novice

Where everyone begins.

0

Apprentice

The habit is forming.

100

Adept

Consistent, across difficulties.

400

Expert

Hard problems, regularly.

900

Master

The top of the ladder.

1,500

02XP

Additive, and it never goes down.

XP is the volume counter. Problems pay by difficulty, bug fixes pay a flat fifty, and the dashboard shows how much you've earned this week next to the total. It's the number that rewards a long Tuesday evening even when the rating didn't budge.

  • 01

    Challenges pay by difficulty

    An accepted submission adds XP scaled to the problem's difficulty. Solving it again doesn't.

  • 02

    Bug fixes pay a flat 50

    Every completed hunt is worth 50 XP, on top of counting as activity for the day.

  • 03

    The daily contest pays at midnight UTC

    When the day closes, everyone who solved its problem gets 20 XP; the fastest gets 15 more and the second fastest 10.

  • 04

    Two counters, one total

    Your profile keeps problem XP and bug XP separately; the dashboard shows the sum and this week's gain.

03Streaks and the heatmap

A year of days, and a number that notices gaps.

A day counts when you get something accepted — a challenge, a SQL problem or a bug hunt. The heatmap keeps a year of those days; the streak counts the current run and remembers your best. Both live on your profile and on the dashboard, next to the tier meter.

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FIG. 01Activity filling in week by week; active days and streaks count up alongside.
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FIG. 02An Accepted arrives: the solving ring, the rating and the streak move together.
04Leaderboards

Compared the way you choose.

The leaderboard can be sliced by what's being ranked, by scope and by time window, and your own row is pinned at the top so you never scroll to find yourself. Category ranks show where you stand for the kind of problem you care about, not just overall.

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FIG. 03Your row, pinned and highlighted. An Accepted comes in, the rating ticks up, and the board re-ranks around you.
05Questions

What rank do I start with?

Does a wrong submission lower my rating?

What counts as an active day for streaks?

Where do I see the distance to the next tier?

Every Master started as a Novice.

Rating, XP and streaks — all earned against real tests.

How Rating, XP and Streaks Work

Rating moves only on accepted submissions, XP is additive and a streak needs an accepted solution a day. The five ranks, Novice to Master.

About CodeKairo

CodeKairo is a web-based coding practice and interview-preparation platform for college students and early-career software engineers.

Frequently asked questions

What rank do I start with?
Novice, at zero. Accepted challenges and bug hunts move your rating from there — the first 100 makes you an Apprentice.
Does a wrong submission lower my rating?
Wrong submissions are recorded in your history and count toward accuracy on your profile; the rating itself is driven by accepted solutions.
What counts as an active day for streaks?
A day with an accepted solution — a challenge or a bug hunt. Runs and failed submissions don't count.
Where do I see the distance to the next tier?
On your profile card ("220 rating to Adept") and in the tier meter on the dashboard.