Serial Keys
#001 Digit SumTier 1
Some keys pass, some don't. What's the rule?
#002 Modulo Gate[LOCKED — solve #001 first]
Requires Digit Sum
#003 XOR Gate[LOCKED — solve #002 first]
Requires Modulo Gate
Some keys pass, some don't. What's the rule?
Requires Digit Sum
Requires Modulo Gate