Blog | AlgoBlazer

A results pane that tells you what happened

After a run, the results pane now opens on the verdict and your output beside the expected answer, and says plainly whether you ran or submitted. Shared solutions take comments on specific lines. The site gets a menu on phones, higher-contrast text and buttons, and a Hide difficulty setting. Study groups can ask for an exact mix of tiers, there's a new Streamers page, five new Learn primers, complexity labels for problems with two sizes, and a long list of fixes.

October 26, 2026midnightsimon

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Watching someone code, without the glitches

Spectating in practice rooms and study groups no longer doubles code, shows the wrong language or drops out on a network blip. The tile layout gets a Hide sidebar button, some Trail Blaze nodes now keep their topic secret for good, design problems now start from a class you fill in, your workspace dividers finally stay where you put them, solutions are now labelled with how much memory they use, and Trail Blaze boards now charge time for misses instead of ranking them ahead of speed.

October 19, 2026midnightsimon

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Every submission in one place, and a tier above Gold

A full My Submissions browser with filters, code diffs and a zip export of your accepted solutions; a new Platinum difficulty tier; technique and complexity labels on your solutions, with a breakdown of how everyone solved each problem; test cases you can edit in place, with the reference solution supplying the expected answer; and Trail Blaze opened up to visitors who haven't signed up yet. Plus a round of tile layout fixes.

October 14, 2026midnightsimon

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API docs and error messages that point at your code

A public reference page for the AlgoBlazer API, the Route on your own Trail Blaze post-mortem, and a round of judge fixes so C#, Swift, Rust and C++ errors name the right line in your editor. Plus a fairer leaderboard count, readable gold in light mode, and tile dragging on Firefox under Wayland.

October 10, 2026midnightsimon

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New Runs, open leaderboards, and a tile layout

Trail Blaze gets New Runs on a fresh random map with their own leaderboard, you can open other players' attempts, and the weekly board now ranks earlier attempts first. Plus an opt-in tile layout on the problem page, the drawing tool in Trail Blaze, milestone-only view notifications, and fixes for the stopwatch and for numbers like 3.0 in results.

October 8, 2026midnightsimon

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Trail Blaze, light mode, and a stopwatch on every problem

A new timed mode, Trail Blaze, plus a light mode, a stopwatch on every problem, Random buttons that pick your next problem for you, view counts on shared solutions and a list of who viewed yours, timestamped interview notes, plainer Learn lessons, a multi-select tag filter, a resizable chat sidebar, and fixes for frozen spectator views, BlazerBot after huge failing cases, wrong-typed returns and deep recursion in Python.

October 7, 2026midnightsimon

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A glossary, a line sweep primer, and shared editors that behave

A new glossary of the acronyms and slang you meet in interview prep, a Line Sweep primer with an animated walkthrough, a pull tab for BlazerBot, rank promotions on profiles, and a round of fixes to shared editors, where everyone now sees the host's full submission result, highlighting stops flashing, and indentation matches solo practice.

September 30, 2026midnightsimon

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Core becomes a label, video in the interview room, and @mentions in chat

Core is now a badge and a filter instead of a difficulty tier; mock interviews get a video call inside the room, a camera and mic check before you join, a pop-out video window, two-seat rooms and private notes; global chat learns @mentions; followed users' rank promotions reach your feed; profiles gain social links and a host's open interview times; and the judge answers time limits and hidden-case failures faster.

September 23, 2026midnightsimon

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BlazerBot in the workspace, booked mock interviews, and a test case grid

A chat drawer that reads your code and asks one question at a time; mock interviews you can offer, browse and book on a calendar; a test case grid under the editor; Restore to editor; six new Learn primers; a public homepage and study groups; rank insignia beside authors in the Activity tab and the room feed; judge errors that no longer blame you for the judge's faults; and Vim and Emacs keybindings in shared rooms.

September 21, 2026midnightsimon

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Sortable solution feeds, prints on re-checks, and a difficulty pass over the imported catalog

The problem Activity tab sorts and pages shared solutions instead of stopping at 30; re-checking a revealed hidden case returns your prints; All Subsets accepts any order; 34 imported problems leave bronze; and fixes for a silent collab desync after a token refresh, goroutine-heavy Go solutions, and truncated inputs in submission history.

September 14, 2026midnightsimon

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Mock interviews with replay, filters on saved lists, and a fairer study group draw

Mock interviews launch with a shared editor and Run, private interviewer notes, a stopwatch, a drawing canvas and a full replay of the session; saved lists get the catalog's search and filters; study groups lean toward problems nobody in the room has solved; and a handful of presence and chat fixes.

September 9, 2026midnightsimon

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Chat reactions, a daily challenge calendar, and LeetCode-parity runtimes

Emoji reactions on every chat surface, a calendar of past daily challenges, rank insignia next to usernames, every language moved to the compiler, runtime and library set LeetCode runs, and a page documenting those runtimes.

September 7, 2026midnightsimon

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XP and levels, a dashboard profile, primers on every Tier I category

Every solve earns XP now, across twelve ranks from Lil' Bit to Algo Blazer, and your history is already counted. The profile page is rebuilt as a dashboard, Learn category pages open with a short primer, and BFS and DFS each split into a tree half and a graph half.

September 5, 2026midnightsimon

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SortedList arrives, the Learn guide shrinks

Python solutions can use SortedList, SortedDict and SortedSet without an import line. The "How to use this section" guide on the Learn page is now seven short lines that stay on screen.

September 4, 2026midnightsimon

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Imports included, undo restored

Python solutions start with the standard library already imported. Ctrl/Cmd+Z had stopped undoing your code in three separate ways, and all three are fixed. Also — example blocks wrap, the study-group sidebar survives a crowd, and the Learn map no longer goes blank after a database blip.

September 3, 2026midnightsimon

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The judge grows up, trees get drawn, and every statement gets rewritten

Java 25, Node 24 and Rust 1.98 replace runtimes from 2019, tree problems diagram their examples, the Learn section explains itself, and all 291 problem statements were rewritten to one voice.

September 2, 2026midnightsimon

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Swift joins the lineup, notifications arrive, and chat grows a memory

Swift is the eighth language on every problem, a notification bell lands in the header, global chat keeps a 30-day backlog you can page through, and the emote set grows to around ninety.

August 29, 2026midnightsimon

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Global chat on the dashboard, report follow-ups, and fairer limits for Python and JavaScript

Global chat moves onto the dashboard with unread badges, problem reports get a reply thread, Python and JavaScript get more memory, and study group code survives the end of the session.

August 27, 2026midnightsimon

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Problem activity feeds, live presence, and Vim mode

Every problem gets an Activity feed with reactions and comments, the dashboard shows where the people you follow are right now, and the editor learns Vim, Emacs, and run/submit hotkeys.

August 26, 2026midnightsimon

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Global chat, live streams, and the Mastery tier

A site-wide chat channel with emotes, live Twitch streams on the dashboard, real tree structures in tree problems, and a new beyond-interview tier in Learn.

August 23, 2026midnightsimon

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C# support, deeper study groups, and better verdicts

C# joins the language list, study groups get problem selection and session history, submissions get a proper viewer, and problems now say which companies asked them.

August 22, 2026midnightsimon

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Practice is now Learn, plus C++20 and editor upgrades

The /practice section moves to /learn, C++ submissions compile as C++20, the editor gains word wrap and a safer Reset, and another dozen problems arrive.

August 19, 2026midnightsimon

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A shared whiteboard and 23 new problems

Practice rooms get a collaborative drawing canvas, the dashboard shows who's solving right now, and 23 new problems land across the catalog.

August 14, 2026midnightsimon

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Discussions, topic tags, and a smoother Learn flow

Every problem now has a Discussions tab and spoiler-safe topic tags, your full submission history is browsable, and Learn gets next/prev navigation.

August 12, 2026midnightsimon

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Collab Sessions, AI debug hints, and rebuilt Learn ladders

Solve problems together in real time, ask the AI why your code isn't working, and climb Learn ladders rebuilt from the ground up.

August 11, 2026midnightsimon

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