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

Rankings: Holes

Reversi in all languages in bytes.

# Golfer Lang Points Bytes Time
1st ovs-code 🇩🇪 K 1,000 57
2nd saito-ta 🇯🇵 Perl 964 72
3rd nwellnhof 🇩🇪 sed 956 78
3rd canissimia 🇦🇶 sed 956 78
5th nwellnhof 🇩🇪 Ruby 952 84
6th nwellnhof 🇩🇪 Perl 951 73
6th Steffan153 🇫🇮 Perl 951 73
8th m-tkach 🇺🇦 Python 950 121
8th orthoplex 🇨🇽 Python 950 121
10th nwellnhof 🇩🇪 Raku 945 77
10th GrayJoKing 🇦🇺 Raku 945 77
12th nwellnhof 🇩🇪 Python 942 122
12th MeWhenI 🇻🇦 Python 942 122
12th sisyphus-ppcg 🇦🇺 Python 942 122
12th Steffan153 🇫🇮 Python 942 122
16th xsot 🇸🇬 Ruby 941 85
16th GrayJoKing 🇦🇺 Ruby 941 85
18th sisyphus-ppcg 🇦🇺 Perl 938 74
18th SirBogman 🇺🇸 Perl 938 74
20th JayXon 🇺🇸 Crystal 938 91
20th Steffan153 🇫🇮 Crystal 938 91
20th GrayJoKing 🇦🇺 Crystal 938 91
23rd ovs-code 🇩🇪 Python 934 123
24th rucin93 🇵🇱 JavaScript 932 121
24th Steffan153 🇫🇮 JavaScript 932 121
24th sean-niemann 🇺🇸 JavaScript 932 121
27th ovs-code 🇩🇪 Ruby 930 86
27th JayXon 🇺🇸 Ruby 930 86
27th MeWhenI 🇻🇦 Ruby 930 86
30th nwellnhof 🇩🇪 PowerShell 929 93
31st lyphyser Assembly 927 84
32nd antimon2 🇯🇵 Julia 927 97
33rd m-tkach 🇺🇦 Coconut 927 119
34th JayXon 🇺🇸 Python 927 124
34th xsot 🇸🇬 Python 927 124
34th pardouin 🇫🇷 Python 927 124
34th GrayJoKing 🇦🇺 Python 927 124
38th JayXon 🇺🇸 JavaScript 925 122
39th ovs-code 🇩🇪 J 920 88
40th Steffan153 🇫🇮 Ruby 919 87
40th stefangimmillaro Ruby 919 87
42nd Steffan153 🇫🇮 Coconut 919 120
43rd stefangimmillaro Crystal 918 93
44th emplv 🇱🇻 JavaScript 917 123
45th ovs-code 🇩🇪 Coconut 912 121
46th 5cw Python 912 126
46th kg583 🇺🇸 Python 912 126
46th SirBogman 🇺🇸 Python 912 126
49th nwellnhof 🇩🇪 JavaScript 910 124
49th vlpx 🇫🇮 JavaScript 910 124
51st SirBogman 🇺🇸 Ruby 909 88
52nd SirBogman 🇺🇸 PowerShell 909 95
53rd Steffan153 🇫🇮 Civet 909 130
53rd rucin93 🇵🇱 Civet 909 130
53rd sean-niemann 🇺🇸 Civet 909 130
56th CatsAreFluffy Assembly 906 86
57th MeWhenI 🇻🇦 GolfScript 905 92
58th rhdqor213 C 905 138
59th kg583 🇺🇸 Coconut 904 122
59th MeWhenI 🇻🇦 Coconut 904 122
59th pardouin 🇫🇷 Coconut 904 122
62nd emgordon154 jq 903 105
63rd MeWhenI 🇻🇦 PowerShell 900 96
64th xsot 🇸🇬 AWK 900 114
65th saito-ta 🇯🇵 sed 899 83
66th GrayJoKing 🇦🇺 Tcl 898 110
67th AlephSquirrel Python 898 128
68th JayXon 🇺🇸 Coconut 897 123
69th JayXon 🇺🇸 Civet 895 132
70th Steffan153 🇫🇮 Dart 893 130
70th Steffan153 🇫🇮 Clojure 893 130
72nd sean-niemann 🇺🇸 Java 893 186
73rd xsot 🇸🇬 PHP 892 117
74th bitsandbeyond 🇳🇱 PowerShell 891 97
75th namelessiw C# 891 175