A CTF challenge series with fun puzzles to enjoy every day
We regularly publish simple, beginner-friendly or educational CTF challenges!
Solve each challenge within its time window to appear on the leaderboard.
Discussion with friends or AI is welcome (account sharing is prohibited).
Sharing solutions is allowed only after the challenge period has ended.
Try the first challenge
Is this your first CTF? Let's begin by tackling the first challenge released on Daily AlpacaHack.
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edwowmathhiikunzhiikunzWant a harder challenge?
Go to B-SIDETopic: IPPONReleased: Mar 14, 2026
Aim to score an IPPON — the top mark in an oogiri, a Japanese comedy game where players try to give the funniest answer to a prompt!
server.py will guide you.[Announcement] A special collaboration between the YouTube channel "Full Weak Engineer" and AlpacaHack 🦙 https://youtu.be/O-FUncmtNCE