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

    Rankings: Holes

    Card Number Validation in all languages in bytes.

    # Golfer Points Bytes Time Submitted
    641st FranklinJiaChen 565 141
    642nd KatieLG 🇬🇧 562 85
    643rd aliakseikalosha 561 127
    644th brimstonetrader 561 142
    644th codewrite 🇬🇧 561 142
    644th RobGLambert 561 142
    644th GodlyProgrammer1 561 142
    648th FortuiteMan 🇫🇷 559 272
    649th ravnskjaer 🇩🇰 558 167
    650th GeneralFabian 557 143
    650th CutSandstone 557 143
    650th kistlerf 🇨🇭 557 143
    653rd madex 🇩🇪 555 116
    654th MeWhenI 🇻🇦 554 290
    655th hiichbindermax 553 144
    655th mathisfun271 553 144
    655th bob-th 553 144
    658th JDiLenarda 🇫🇷 553 165
    659th KatieLG 🇬🇧 552 120
    660th snoozingnewt 🇨🇦 552 148
    661st edsrzf 🇳🇿 551 135
    662nd JunkIce 550 145
    662nd Flekay 🇩🇪 550 145
    664th msbranicky 550 185
    665th mousetail 🇳🇱 549 128
    666th ethanlally 549 170
    666th snoozingnewt 🇨🇦 549 170
    668th gpikmddk 548 130
    669th croc54 546 146
    670th zakariamouhid 545 118
    670th JOrE20 🇺🇸 545 118
    672nd xyangst 545 171
    672nd kmathis22 545 171
    674th najs91 544 131
    674th bac0id 544 131
    674th CaedenHarper 🇨🇦 544 131
    677th dokutan 543 122
    678th PyryL 🇫🇮 542 147
    679th eranws 541 119
    680th Sciman101 539 147
    681st mbittner20 538 148
    681st YAJUE114514 538 148
    683rd psaban 535 149
    683rd TheZwierzLF 🇵🇱 535 149
    685th msbranicky 533 175
    686th deancureton 532 121
    687th FlorianCassayre 🇫🇷 531 150
    687th jameswmccarty 531 150
    687th yousefalizadeh 531 150
    687th feherd 531 150
    687th kadamkaustubh 531 150
    692nd msbranicky 528 126
    693rd adamnielson42 🇺🇸 524 152
    693rd voidgloom 524 152
    693rd omero-san 524 152
    693rd brochmann 🇸🇪 524 152
    697th Macweese 524 178
    698th galloj 🇨🇿 522 112
    699th TheZwierzLF 🇵🇱 522 127
    700th xyangst 521 153
    700th denisfouchard 521 153
    702nd snoozingnewt 🇨🇦 520 213
    703rd bac0id 518 180
    704th osNiko 🇧🇷 517 154
    705th sidok 515 109
    706th dokutan 514 143
    707th robin-scragg 514 155
    707th celiendonze 🇨🇭 514 155
    709th travisdoesmath 511 156
    709th Shotokhan 511 156
    711th nephila-nacrea 🇬🇧 510 77
    712th yoshykai 510 183
    713th KatieLG 🇬🇧 509 140
    714th KatieLG 🇬🇧 509 146
    715th dokutan 508 116
    716th Chinay-Domitrix 🇺🇸 508 131
    717th lhulinsky 508 157
    718th dokutan 507 126
    719th ThatAlo 504 158
    720th Andrey2001 502 132