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

xyangst

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23,879
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hi

⛳

35 / 108 Holes

🔣

51 / 58 Langs

🏆

28 / 75 Cheevos

📅

π in C in Bytes Play Hole

55th in C and 1,979th overall.

Last tested .

Bytes Chars Submitted
1,019 1,019
1,021 1,021
1,044 1,044