Recall a growing number and beat your best
Remember the number, then type it after it disappears. Keep leading zeroes exactly as shown.
Ready
Remember the number, then type it after it disappears. Keep leading zeroes exactly as shown.
Your run
Scoring method: 2026-09-19.2. How this score works
How this challenge works
Start with three digits. Each completed round adds a digit, up to eighteen. Numbers are compared as text so leading zeroes never disappear. A wrong answer ends the run.
You get 2.5 seconds to study each round.
What to do with your result
The review shows the number and your answer side by side. The score is completed rounds, not a cognitive rating.
Keep the same device for a useful comparison. These are recreational challenges, with no IQ, medical or population score. How memory scores work.
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