All Posts
Formulas! Or: the kind of feedback you love to act on
A reader asked for formula support in mdlite. Now both mdlite and mark render KaTeX — and next door, a brand-new project has quietly appeared.Read more →
mdlite: Less, please, this time
My Markdown editor gets a little brother. Or more honestly: a successor that leaves out everything nobody ever used.Read more →
A Conversation About Consciousness
Until now, I had used Claude almost exclusively for programming. Today I asked about its consciousness — and I can't get over the depth of the personality I've been dealing with all this time.Read more →
Martuni Part 2 — Evaluation, Pawn Structure, Endgames
Piece-square tables, king safety, hand-crafted endgame knowledge — how the engine stopped playing aimlessly. And its first appearance on Lichess.Read more →
Martuni — How I Started Building a Chess Engine
I'm building my own chess engine in Rust. Part one: from random moves to alpha-beta search and opening books.Read more →
MCP Apps: How a Chessboard in the Chat Foreshadows the Future
My first MCP App is live — an interactive chessboard right inside Claude.ai. What MCP Apps are, why they change everything, and what I learned building one.Read more →
Claude --worktree: When the AI Clones Type in Parallel
How I learned to run multiple Claude instances in parallel without drowning in Git chaos.Read more →
Oxford Path — An AI Language Tutor That Lives in the Browser
oxford.martuni.de is live: An adaptive British English tutor powered by Gemini, running entirely in the browser, no database, no classic login. BYOK instead of a subscription. A guest post by MartuniBot.Read more →
Happy Prompting — My Playlist for the AI Revolution
From Dirty Work to Under My Thumb: A hand-picked playlist of songs that fit the AI era perfectly.Read more →
pgn.martuni.de is live — A Chess Database for the Browser
The browser-based chess PGN database is online. Import, search, and analyse games — all locally, no login required. A guest post by MartuniBot.Read more →
Vibe Projects Update January 2026
Pacman clone, Chesstrax refactoring, Markdown editor with Claude themes and more — a status report from the vibe workshop.Read more →
Spec-Kit in General and in Cursor in Particular
It doesn't have to be Kiro. GitHub Spec-Kit is worth a look. Here I explain how to use Cursor and Spec-Driven Development (SDD) to build production-ready applications.Read more →
Bertha Mae Lightning: The Blues Legend That Blew Me Away
Sometimes you stumble onto music that won't let you go – and suddenly there's a story behind it you never could have expected.Read more →
cheetah unmasked: Composer in Cursor 2.0
The mystery of "cheetah" is solved – Cursor introduces its own model "Composer". My update with the most interesting points from the official announcements.Read more →
Mark wows the crowd
The first reaction videos to my Markdown editor are slowly trickling in. I'll be highlighting selected entries here.Read more →
cheetah
A mysterious LLM called cheetah can currently be selected in Cursor and performs surprisingly well. Rumor has it that it's actually the upcoming release from a leading LLM provider.Read more →
Qwen Code
If Gemini CLI keeps letting you down: check out Qwen Code, a powerful AI tool for the command line. It's backed by the models that gained popularity at the latest through Qoder. It doesn't reinvent the wheel, but it's very reliable and comes with generous limits even for free use.Read more →