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

Rankings: Holes

Reversi in Haskell in chars.

# Golfer Lang Points Chars Time
1st ovs-code 🇩🇪 Haskell 1,000 190
2nd lynn Haskell 918 207
3rd Shanethegamer 🇺🇸 Haskell 792 240