Field test
Untimed — take as long as you need on every puzzle. A run answered faster than the puzzles can genuinely be read still gets its score, but never ranks.
Each of the four kinds opens with one unscored practice puzzle, so you always know what’s being asked before anything counts.
Every run is drawn fresh — a retake gets new puzzles, and your best run is what ranks.
The puzzles are nonverbal: the score measures how you find rules in pictures, not what you know. Every run is generated and scored on the server — this page is only the pencil.
The result shows on the Nomor Scale (40–160, centred on 100) with an honest ± range: a 24-puzzle test can place you well, but never to the point. The raw correct count is what ranks.
Anti-cheat is flag-not-reject: a run that moves faster than its four parts can genuinely be read, or lands past your daily share of ranked runs, still scores and saves — it just never enters the leaderboard. A score near the very top is asked to confirm itself with a short extra round before it ranks; nothing about the run is judged, and both scores stay yours either way.