August 31, 2026
Doubling Track
A 2-minute pattern recognition challenge. Solve first, then compare your answer against the model bench.
Daily challenge switches at midnight in Europe/Amsterdam.
Daily challenge · Pattern recognition · 2 min
Doubling Track
00:00
Study the sequence: 3, 8, 18, 38, 78.
What comes next?
Solve without AI first. The model comparison appears only after you lock in.
Open today's permalinkWhy this can spread
One clean result is easier to share than a whole product pitch.
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