Each puzzle hands you two buffers and names one technique. Transform the left into the right — using that technique — then read exactly what you just did.
You're told what you're practising. The shape shows — the form of the idea. The answer never does.
Actual vim, in the page — its own cursor, its own colours. Keystrokes are counted because they're interesting, not because they're the point.
Solving isn't the point. Being told why the technique matters — and when it quietly doesn't — is.
No score. No leaderboard. No streak. No rank.
This is practice, not a race. The keystroke count is there so you can see what a technique costs — never so you can beat someone. Anything that started to feel like a competition, we cut.