Daily AlpacaHack
A CTF challenge series with fun puzzles to enjoy every day
What is Daily AlpacaHack?
We regularly publish simple, beginner-friendly or educational CTF challenges!
Join Anytime
Solve each challenge within its time window to appear on the leaderboard.
Not a Competition
Discussion with friends or AI is welcome (account sharing is prohibited).
Solution Sharing Rules
Sharing solutions is allowed only after the challenge period has ended.
Today's Challenge
admin
Baby Alpaca47 solves
Misc
Welcome🌱
Leaderboard
Period
Try the first challenge
Is this your first CTF? Let's begin by tackling the first challenge released on Daily AlpacaHack.
admin
AlpacaHack 21002,235 solves
Misc
Welcome🌱
Upcoming challenges reveal the , , and in advance.
Dec 2025
NextSolved
Unsolved
Upcoming
Mon
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1
admin
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xornet
xornet3
ark
ark4
minaminao
minaminao5
mora
mora6
n01e0
n01e07
jp3bgy
8
yu212
yu2129ark
ark10
xrekkusu
xrekkusu11
hiikunz
hiikunz12
chocorusk
chocorusk13
ptr-yudai
ptr-yudai14
iwashiira
iwashiira15hiikunz
hiikunz16ark
ark17ptr-yudai
ptr-yudai18
kanon
kanon19
k0080
k008020
fabon
fabon21
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tchen
tchen23hiikunz
hiikunz24minaminao
minaminao25hiikunz
hiikunz26tchen
tchen27n01e0
n01e028
hi120ki
hi120ki29kanon
kanon30
soon-haari
soon-haari31
admin
1
admin
2kanon
kanon3hiikunz
hiikunz4minaminao
minaminaoWant a harder challenge?
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