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Public Puzzle · Logic
The Missing Frame
One image in a sequence has been removed. Reconstruct the pattern.
DifficultyStarter
Reward40 pts
Est. time5 min
Challenge
The symbols below follow a repeating transformation. Determine the missing symbol number and submit it as BASHCTF{NUMBER}.
Evidence
1 itemE-01Sequence
2 → 6 → 12 → 20 → ? → 42