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Identify the opening in progressively smaller browser-rendered symbols.
Press SPACE or click
If you are signed in, eligible saved scores are automatically considered for public leaderboards under your username and saved country snapshot. You can remove individual results through your Profile history. Learn more in our Privacy Policy.
Choose which way the symbol opens. The browser makes the symbol smaller after three correct answers.
Arrow keys or Click
Mouse and touch input also work.
Metric
detail level
Difficulty
Medium
Use the same device and similar conditions when comparing runs. Your saved personal best and repeated results show your own trend; public leaderboard entries provide current competition context, not a population benchmark.
A visual-only browser challenge based on recognizing the opening in a rendered symbol.
Choose which way the symbol opens. The browser makes the symbol smaller after three correct answers.
The level is useful for comparing your own runs on the same screen and browser. It is not an eye exam or vision measurement.
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