B-SIDE
A CTF challenge series with fun puzzles to enjoy every day — B-SIDE
What is B-SIDE?
This side program features challenges with a different flavor from Daily AlpacaHack. We publish harder or more unconventional challenges from time to time.
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.
New to CTFs?
This program features higher difficulty and unconventional challenges. Try the beginner-friendly Daily AlpacaHack first to warm up.
Leaderboard
Period
Upcoming challenges reveal the , , and in advance. 
tchen
Mon
Tue
Wed
Thu
Fri
Sat
Sun
26
Coming soon
27
Coming soon
28
Coming soon
29
Coming soon
30
Coming soon
31
Coming soon
1-4tchen
tchentchen5-8
kakur41
kakur419-12
k0080
k008013-16
Planned topicGraphQL
Web
Very Hard
Planned topicGraphQL
Web
Very Hard
17-20
Planned topicRSA, AES
Crypto
Very Hard
21-24
Planned topicmalloc
Pwn
Very Hard
Planned topicmalloc
Pwn
Very Hard
25-30
Planned topicClient-Side
Web
Very Very Hard
Planned topicClient-Side
Web
Very Very Hard
1
Coming soon
2
Coming soon
3
Coming soon
4
Coming soon
5
Coming soon
6
Coming soon
