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

Rankings: Holes

Reversi in Rust in chars.

# Golfer Lang Points Chars Time
1st stefangimmillaro Rust 1,000 221
1st mousetail 🇳🇱 Rust 1,000 221
3rd Shanethegamer 🇺🇸 Rust 825 268