TopsOJ Changelog

• Added
  Welcomed the Society of Actuaries as a Bronze sponsor of Summer Contest 2026.

  • Sponsors and partners now also appear on the Summer Contest page, and each logo is sized by sponsorship tier.
• Added
  Added a self-service team dashboard where team accounts can manage members and settings.
• Added
  Added an audited team administration panel for admins, including linking legacy team accounts to the new system.
• Added
  Imported the MIT Integration Bee and Náboj contest problem sets.
• Added
  Added a live LaTeX preview of your answer while submitting a solution.
• Changed
  Disabled legacy login identities and required reauthentication for affected accounts as part of a security upgrade.
• Changed
  Normalized problem statement source formatting across the site for more consistent rendering.
• Fixed
  Closed several security issues, including a fix ensuring contest submissions stay hidden until each contest's embargo window ends.
• Fixed
  Fixed value-based grading so numeric answers from the newly imported contests score correctly.

• Added
  Added a clock tool page for timing practice sessions.
• Changed
  Removed the Leading Aces Academy sponsor card from the homepage.
• Fixed
  Fixed a homepage scrolling issue and a dark mode color bug.
• Fixed
  Fixed a bug in the info dropdown menu in the site header.
• Fixed
  Fixed submission limit and lock logic affecting multiple-choice problems, Zen mode, and the API.

• Added
  Added upvotes, community difficulty voting, private notes, and issue reporting on problem pages, plus a personal “My Notes” study index.
• Added
  Added course enrollment with progress tracking, course-list progress indicators, and a My Courses navigation link.
• Added
  Added a per-category solved/points breakdown, solved-problems list, and recent activity feed to user profiles.
• Added
  Added optional live auto-refresh and a freeze option for contest scoreboards, plus a persistent submissions-left counter on contest problem pages.
• Added
  Added an overall standing banner to the rankings page and made point, rating, and streak leaderboards handle ties correctly.
• Changed
  Rolled out a sitewide visual redesign with a new design system, followed by a bold poster pass with ink-edged cards and maroon banners.

  • Applied across the homepage, problems, contests, courses, profile, auth, math gym, rankings, admin, and submissions pages.
• Improved
  Sped up page loads by fixing slow database queries and adding indexes on contest, ranking, and problem-listing pages.
• Fixed
  Fixed Zen mode, which was completely broken due to a missing session token, including its repeat-problem prevention.
• Fixed
  Fixed a broken team page, missing contest verdict alerts, and bad-gateway errors during site startup.
• Fixed
  Fixed a bug that exposed other organizations' problem lists, a hole that let non-participants submit fake PvP records, and a non-working See More button on clipped cards.

• Added
  Multiple-choice problems now lock after two wrong submissions to prevent guess-spamming.
• Added
  Added a rolling rate-limit lock on repeated wrong submissions for non-multiple-choice problems.
• Changed
  Renamed remaining “Tops Online Judge” text across the site to TopsOJ.
• Fixed
  Fixed the lock timing and improved the message shown when a problem is temporarily locked.
• Fixed
  Fixed UI markup and input handling bugs in the Be Perfect game.
• Fixed
  Fixed dark mode contrast and spacing issues on the homepage and dashboard stats.

• Improved
  Rankings now let you jump straight to your own position on the leaderboard, with ties broken consistently.

• Added
  Added a filter to browse problems by point value.
• Fixed
  Fixed a bug that could break score submission in the Mental Math game.

• Added
  Added Zen Mode, a distraction-free practice mode with instant problem selection, an onboarding walkthrough, and configurable settings.
• Added
  Added a Courses section with lessons, enrollment, and progress tracking.

  • Launched with intro algebra, geometry, and counting & probability curricula.
• Added
  Added dynamic team member profiles with an admin editor for the Our Team page.
• Added
  Added quick filter buttons, active filter chips, and pagination/sort summaries to the problems list.
• Added
  Added an upcoming contests card, stats card, and announcement tag filtering to the homepage.
• Added
  Added a public ranking API endpoint.
• Improved
  Redesigned the homepage hero banner, leaderboard sidebar, and announcement cards.
• Improved
  Redesigned the settings page.
• Improved
  Reorganized the navbar and rankings/organizations tabs, and improved dark mode toggle behavior sitewide.
• Fixed
  Fixed bugs in the problems and rankings API, including tag parsing and the streak leaderboard query.

• Added
  Added a smart suggestions modal to the problems page to help you find what to try next.
• Added
  Published the 2024 annual report, with a new solved-by-month chart.
• Added
  Added a grace period and a new leaderboard for problem-solving streaks.
• Added
  Added bonus round scoring to the tournament results table.
• Fixed
  Fixed several annual report bugs, including an incorrect percentile baseline, and stopped the report overlay from reappearing after it had been viewed.
• Fixed
  Fixed streak tracking so it updates correctly and refreshes the profile banner.
• Fixed
  Fixed incorrect tournament team and guts score totals.
• Fixed
  Fixed the tournament page so it lists all linked teams, and added support for linking teams by username.
• Fixed
  Fixed guts contest navigation and prevented contest submissions from being duplicated on page refresh.
• Fixed
  Fixed the homepage so logged-out users see the landing page, and fixed user-specific filters redirecting properly to login.

• Added
  Launched a new Imposter party game with classic and stealth modes.

  • Added custom word list uploads and preset word packs.
  • Added a mystery word reveal mode and default player names.
  • Added an end screen after the final reveal.
• Added
  Introduced an annual Wrapped year-in-review report with a personalized recap and a prompt modal accessible from the navbar.
• Improved
  Polished the Imposter game's UI, feedback, and mobile layout, and hid round info and word choices until the proper reveal moment.
• Improved
  Refined the Wrapped recap's typography, animations, and glass-effect styling.
• Fixed
  Fixed a bug in the annual report calculations.

• Fixed
  Regraded the 2025 AMC contests to correct scoring errors.

• Added
  Added search filters and tag-aware pagination to the contests page.
• Added
  Added a Discord-only Problem of the Day placeholder to the Math Gym page.
• Changed
  Redesigned the Math Gym landing page.
• Improved
  Reworked the homepage hero section with a redesigned layout, fixed background layering, and tighter spacing.
• Improved
  Improved the mock contest generator's pre-generation screen.
• Fixed
  Fixed Full Solution contest problems appearing out of numeric order.
• Fixed
  Fixed the homepage logo centering and feature card grid layout.

• Added
  Added a contest answer-preview page that shows the rendered problem statement next to an editable answer box before you submit.
• Changed
  Redesigned the homepage with a sticky navbar, login and sign-up buttons in the hero section, and a refined Learn More section.
• Improved
  The weekly leaderboard now also shows your own rank even when you're outside the top 3, over a wider 20-day window.
• Fixed
  Fixed the tournament editing page, whose problem and team list controls were broken by leftover merge-conflict markers.

• Added
  Added a personalized “Problems you might find challenging” recommendation panel to the problems page, based on your submission history.
• Fixed
  Fixed an API bug that exposed a user's password hash in login-confirmation responses.

• Added
  Showed how many submissions on the problems page come from mobile platforms.
• Added
  Added a Show All API Keys page in account settings, listing every key's platform and creation date and letting you delete individual keys.
• Changed
  Switched TopsOJ Mobile and other API clients to log in with a username and password instead of a manually copied API key.

• Added
  Added support for submitting problem answers from the TopsOJ Mobile app.
• Added
  Added rate limiting on login attempts and made API keys expire after 14 days.

  • Regenerating a key now automatically invalidates the old one.
  • Added a clearer safety warning in account settings.

• Added
  Added an animated gradient bubble effect to the homepage.
• Added
  Added contest admin controls.
• Added
  Added API key login and authentication support.
• Changed
  Redesigned the profile page with new customization options, including a show/hide toggle for information.
• Improved
  Improved dark mode styling on the profile page.
• Fixed
  Fixed contest permission handling.

• Added
  Added a submission activity heatmap to user profiles.
• Added
  Added a weekly leaderboard.
• Added
  Added file upload support for contest submissions, with size limits and a submission checkbox.
• Added
  Added a grading page for reviewing and scoring file-based contest submissions.
• Added
  Added next/previous navigation, with hotkeys, between contest problems.
• Improved
  Reworked the math gym cards and improved dark mode styling.
• Improved
  Updated the scoreboard to account for Euclid contest submission timing.
• Fixed
  Fixed several Euclid contest timer bugs.
• Fixed
  Fixed a grading bug and a submitted-file bug.
• Fixed
  Fixed an issue causing excessive redirects.

• Added
  Added a new Euclid contest type with its own scoring and file-preview support.
• Added
  Added the ability to bookmark problems.
• Improved
  Restyled the bookmark icon to match the TopsOJ theme.
• Improved
  Updated the team page.
• Fixed
  Fixed problem list sorting and navigation issues.
• Fixed
  Fixed a bug when creating tournaments.
• Fixed
  Fixed the problem-solved sorting error.
• Fixed
  Fixed filter storage and previous-filter toggle bugs.
• Fixed
  Fixed a submission limit bug for standard-style contests.

• Improved
  Updated the add-problem-to-list page.
• Fixed
  Fixed a bug where problem list filters were not being saved correctly.
• Fixed
  Fixed a ticket-reported bug affecting the site.

• Added
  Expanded tournaments with team management, scoring multipliers, and tournament problem lists.
• Added
  Added natural sort ordering to the problems page.
• Changed
  Redesigned the team page styling.
• Fixed
  Fixed a tournament status display bug.
• Fixed
  Fixed the server uptime display.
• Fixed
  Fixed various tournament bugs and tightened permissions.

• Added
  Added a leaderboard for problem lists.
• Added
  Added tournament creation for admins, including naming tournaments and adding teams.

• Added
  Added problem lists so organizations can create and manage curated sets of problems.
• Added
  Added a quick problem-creation link to the organization dashboard.
• Added
  Organization admins can now create contests and add problems to private contests.
• Changed
  Organization admins can no longer delete their own organization.
• Fixed
  Closed a security gap that allowed XSS attacks on the contest page.
• Fixed
  Fixed several contest display bugs.

• Added
  Added a confirmation page before joining a contest, along with new contest join restrictions to prevent accidental entries.
• Added
  Added an optional window timer display on contest listings.
• Added
  Added an organization admin role with its own dashboard permissions.
• Added
  Added your current ranking position to the home page.
• Changed
  Adjusted mental math penalty scoring and updated its description.
• Changed
  Updated the mock contest generator's problem type and scoring.
• Fixed
  Fixed mental math ranking bugs.
• Fixed
  Fixed problem todo pagination, problem search, and a contests page rendering timing bug.
• Fixed
  Fixed several bugs in viewing and joining private organization contests.
• Fixed
  Fixed a weekly leaderboard bug and updated the rankings page.

• Added
  Launched user and problem ratings, with per-problem rankings, solve-time tracking, and contest-weighted rating calculations.
• Added
  Added rating graphs and highlights to user profiles.
• Added
  Added a mental math ranking page and time tracking.
• Added
  Added AMC-style formatting and updated AMC problem displays.
• Added
  Added full-text search for problems.
• Added
  Added a random-problem button and a filter to hide already-solved problems.
• Added
  Added a problem to-do list page.
• Added
  Added a course view.
• Fixed
  Fixed security vulnerabilities allowing XSS and CSS injection.
• Fixed
  Fixed a bug on the problem-of-the-day ranking page.

• Added
  Added daily streaks and bonus points, with follow-up fixes to streak tracking and display.
• Added
  Added private contests with per-organization visibility controls.
• Added
  Added a new Perfect Square game to the Math Gym, with the ability to save game settings.
• Added
  Added guts round export and an animated logo for contests.
• Added
  Added contests and a popular-problems display to the organization home page.
• Added
  Users can now view their own past submissions.
• Improved
  Improved the home screen layout.
• Improved
  Improved dark-mode display by inverting problem images.
• Fixed
  Fixed a bug in answer key generation and in the AMC 8 mock display.
• Fixed
  Fixed two security bugs.

• Added
  Added a resources page and updates to the Math Gym triangulate game.
• Added
  Added a timer and timed-mode setting for practice sessions.
• Added
  Added a leaderboard to the organization home screen.
• Added
  Added more contests to the mock generator.
• Changed
  Redesigned the home page layout.
• Changed
  Restricted organization data management to admins and superadmins.
• Fixed
  Fixed pagination bugs, including one that broke on Safari and WebKit.
• Fixed
  Fixed a bug in joining and leaving organizations; organization owners can no longer leave their own organization.
• Fixed
  Fixed mock generation for past AIME contests that don't have separate I/II versions.
• Fixed
  Fixed a display bug affecting mobile devices.

• Added
  Added a navbar link for quick access to your organization.
• Fixed
  Fixed a bug where LaTeX would fail to render in problem statements.
• Fixed
  Fixed bugs in the organization scoreboard and dashboard pages.

24.4.1

• Added
  Added search by points (upper and lower bound supported).
• Added
  Added ranking for most points in the last 7 days.
• Changed
  Made several limited features public, for users who aren't logged in.
• Changed
  Patched and balanced some triangulate features.
• Improved
  Improved attributions and added recent AMC 8/10/12 problems.
• Fixed
  Fixed positioning errors.

24.4.2

• Added
  Added the option for users to hide problem tags.

  • The option to view this can be toggled in user settings.
  • Problem lists will now display whether tags are hidden or not.
  • This setting is overridden in the problem itself, where a temporary button can show or hide tags at will (default hidden).
• Added
  Added a filter so you can hide problems you have solved.
• Added
  You can now sort problems by category, name, solves, or point value by clicking the corresponding title in the problems table.
• Fixed
  Fixed dark mode in changelog.
• Fixed
  Fixed security bugs involving user submissions.

24.3.1

• Added
  Added triangulate.
• Improved
  Balanced and fixed triangulate.
• Fixed
  Fixed bugs involving post contest.
• Fixed
  Contest display fixes.

24.2.1

• Added
  Began tag adding to problems.
• Added
  Added contest join confirmations.
• Improved
  Enlarged all problems.
• Improved
  Highlights user in rankings.

24.1.1

• Added
  Added next set/problem for live contests.
• Changed
  Changed the “efficiency” stat to “general rating”.
• Changed
  Changed ranking icons and gradient.
• Improved
  Massive contest query optimizations.
• Fixed
  Fixed admin backend bugs and displays.
• Fixed
  Fixed a variety of team contest bugs.

24.1.2

• Added
  Officially released dark mode as beta.
• Added
  Added time zone aware URLs in contest start and end times.
• Added
  Finished Our Team, Uptime, and Changelog in the info section.
• Fixed
  Fixed email sending bugs.

24.1.3

• Added
  Implemented and released the Mock Generator.
• Added
  Implemented and added contest timed windows.
• Added
  Added a Discord section in Info using a Discord widget.
• Improved
  Improved rating algorithm (releasing next month).
• Fixed
  Repaired some more broken problems.

23.12.1

• Added
  Added guts contest features.
• Added
  Added problem tags.
• Added
  Added hover-growable elements.
• Added
  Started contest rating algorithm.
• Changed
  Minor color modifications.
• Improved
  Problem edit and create quality of life updates.
• Fixed
  Fixed bug with Filter by category.

23.12.2

• Added
  Started making Math Gym, added colorful gradients.

  • Global Problems
  • POTD Lists
  • POTD Leaderboard
  • Mental math practice
• Added
  Added a search by problem title feature with fuzzy search.
• Added
  Added ranking medals beside top five users.
• Improved
  Improved problem icons, added an attempted icon.
• Changed
  Split user profiles into user-info and quick stats.

23.12.3

• Added
  Added a gradient aesthetic for top five users in user-info.
• Added
  Added a multi-select search by tags feature for problems.
• Added
  Added all CEMC PCF problems.
• Added
  Added next/prev button for problems in a contest, such as AMC.
• Added
  Added search by users and rankings page by 50.
• Added
  Added site tester permission, improved team algorithms, added team features.
• Improved
  Improved problem search UI.
• Improved
  Vastly improved account email confirmation UI.

23.11.1

• Improved
  Performance updates on redirects.
• Improved
  Backend NGINX and server optimizations.
• Fixed
  Repaired broken AIME problems.

23.11.2

• Added
  Added basic and advanced user statistics.

  • Basic stats: join date, problems solved and points.
  • Advanced stats: everything else, such as total submissions.
• Improved
  Balanced out the efficiency statistic by adding weightings and more factors.

23.11.3

• Added
  Added global and public submission viewing.
• Improved
  Quality of life updates.

  • Separate contest rankings.
  • Minor positioning fixes.
  • Color modifications.
• Fixed
  Bug fixes.

  • Fixed installer bugs.
  • Fixed contest related bugs.
  • Fixed backend bugs.
• Changed
  Security updates.

  • Updated requirements.txt.
  • Updated module versions.
  • Improved helper functions.

23.11.4

• Added
  Added specific submission viewing for problems and contests.
• Improved
  Huge performance update with SQL query optimizations.
• Changed
  Admin related updates involving submissions.
• Fixed
  Minor UI fix with login page, register page, and problems page.

23.10.1

• Improved
  General UI improvements.
• Improved
  Performance updates.
• Changed
  Formatting and alert/warning design changes.
• Fixed
  Fixed contest system and API.

23.10.2

• Added
  Added virtual and post-contest solving.
• Changed
  Permanently changed domain to https://www.topsoj.com/.
• Changed
  Edited alerts and cards related to contest.
• Fixed
  Repaired broken problems.

23.10.3

• Added
  Added a submission limit to current contests; past contests do not have this limit.
• Added
  Added an efficiency statistic for users (renamed to General Rating in version 24.1).
• Improved
  UX and UI improvements related to rankings and scoreboard.

• Added
  Initial public release.

• Added
  Initial private release (first domain).