The ROT13 hole will go live in approximately . Why not try and solve it ahead of time?

nwellnhof 🇩🇪

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Card Number Validation in Java in Chars Play Hole

2nd in Java and 88th overall.

Last tested .

Bytes Chars Submitted
133 133
134 134
136 136
137 137
138 138
142 142
143 143
144 144
145 145