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

Rankings: Holes

Card Number Validation in JavaScript in bytes.

# Golfer Points Bytes Time
1st duckyluuk 🇳🇱 1,000 68
1st JayXon 🇺🇸 1,000 68
1st emplv 🇱🇻 1,000 68
1st rucin93 🇵🇱 1,000 68
1st sean-niemann 🇺🇸 1,000 68
6th nwellnhof 🇩🇪 986 69
7th stefangimmillaro 971 70
8th GrayJoKing 🇦🇺 958 71
8th pardouin 🇫🇷 958 71
8th ovs-code 🇩🇪 958 71
8th vlpx 🇫🇮 958 71
12th xsot 🇸🇬 944 72
13th dmrichwa 🇺🇸 932 73
13th DialFrost 🇸🇬 932 73
15th Natanaelel 🇸🇪 919 74
15th helbling 🇨🇭 919 74
15th Irratix 🇳🇱 919 74
15th emgordon154 919 74
19th voytxt 🇨🇿 907 75
19th MeWhenI 🇻🇦 907 75
19th m-tkach 🇺🇦 907 75
19th error256 907 75
23rd Shanethegamer 🇺🇸 883 77
24th edsrzf 🇳🇿 872 78
25th tayloia 🇬🇧 840 81
25th targrik 840 81
27th KingSkyrock 🇺🇸 829 82
28th uttumuttu 🇫🇮 819 83
28th KatieLG 🇬🇧 819 83
28th Larento 819 83
28th Andrey-Plotnikov 819 83
32nd didion0 🇺🇸 810 84
33rd weliveinhell 🇭🇹 800 85
34th Maznek 791 86
35th KrausRaus 🇺🇸 782 87
35th GeorgeStechman 🇬🇧 782 87
35th coreynash 782 87
38th kirjavascript 773 88
39th dtbao20 🇻🇳 764 89
39th madeforlosers 764 89
39th junkondo-jp 764 89
42nd alexsave 756 90
43rd LukeBridges 🇬🇧 739 92
44th Salutations45 731 93
44th strattonwhisler 731 93
46th two-bad 🇬🇧 701 97
47th xyangst 694 98
47th BambooleanLogic 🇸🇪 694 98
49th BalaM314 654 104
50th HumanoidCPU 642 106
51st 823126 607 112
52nd madex 🇩🇪 586 116
53rd zakariamouhid 576 118
54th eranws 571 119
55th deancureton 562 121
56th TheRealOhead 🇺🇸 519 131
57th Mabeloid 🇳🇴 428 159
58th Ralac07 🇦🇺 420 162
59th noahhorlacher 356 191