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

stefangimmillaro (he/him)

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Card Number Validation in Java in Bytes Play Hole

4th in Java and 201st overall.

Last tested .

Bytes Chars Submitted
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148 148
153 153
154 154
160 160
162 162
164 164
167 167
170 170
173 173