imgchk

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Rows:

CHALLENGE	AUTHORS	SOLVES (CURRENT)	SOLVE RATE (AT CONTEST TIME)
Welcome Misc	admin	1241 solves	-
AlpacaHack 2100 Misc Daily AlpacaHack	admin	663 solves	-
Simple Login Web AlpacaHack Round 2 (Web)	ark	510 solves	Top 28% = 84/300 users
a fact of CTF Crypto Daily AlpacaHack	xornet	459 solves	-
Emojify Web Daily AlpacaHack	ark	322 solves	-
echo Pwn AlpacaHack Round 1 (Pwn)	ptr-yudai	311 solves	Top 32% = 56/174 users
Leaked Flag Checker Rev Daily AlpacaHack	minaminao	294 solves	-
simpleoverflow Pwn Daily AlpacaHack	n01e0	267 solves	-
Treasure Hunt Web AlpacaHack Round 7 (Web)	ark	246 solves	Top 15% = 71/458 users
qrime Crypto AlpacaHack Round 3 (Crypto)	xornet	228 solves	Top 38% = 91/239 users
hit-and-miss Misc Daily AlpacaHack	ark	211 solves	-
Country DB Web CakeCTF 2023	ptr-yudai	205 solves	Top 33% = 246/729 teams
size limit Crypto Daily AlpacaHack	jp3bgy	189 solves	-
Integer Writer Pwn Daily AlpacaHack	mora	189 solves	-
Read Assembly Rev Daily AlpacaHack	xrekkusu	187 solves	-
inbound Pwn AlpacaHack Round 6 (Pwn)	ptr-yudai	187 solves	Top 28% = 57/197 users
Alpaca Bank Web Daily AlpacaHack	hiikunz	185 solves	-
Safe Prime Crypto Daily AlpacaHack	ptr-yudai	160 solves	-
Fully Padded RSA Crypto Daily AlpacaHack	yu212	160 solves	-
masking tape Rev AlpacaHack Round 8 (Rev)	arata-nvm	159 solves	Top 19% = 61/316 users

Rows:

7 solves

Author:

ptr-yudai

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Ordinal flag checker but not for text.