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

    retrohun

    86,417
    81,590
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    placeholder for brainwashing short quote

    123 / 123 Holes

    🔣

    62 / 62 Langs

    🏆

    89 / 99 Cheevos

    📅

    12 Days of Christmas
    171149168885169 2575189181 179 135131174178162 178 124 186149 184125132 181165 179159 181185209135150175170202174188724 166198 910208136172 183134184
    24 Game
    49313 20 384 984
    99 Bottles of Beer
    2016488929435 7493279518 36 1817191920 21 18 2314 201515 2016 1814 202050320151716211719764 1722 839242020 191319
    Abundant Numbers
    148240883831247 341824311329 713 392237373274357 302 86 373137 27311869 275222 211113 25514549425424633757385761231208 250399 1,000518316343 264292326
    Abundant Numbers (Long)
    264788374647 988216668 186 7744855969 72 13 8625 50 12 6642 3826 5831915642591277634135 4480 2111036961 587167
    Arabic to Roman
    330759 882
    Arithmetic Numbers
    852 231
    Arrows
    822 589
    Ascending Primes
    858 605 151 558 846341
    ASCII Table
    323264351928368 17757416376 408318416471429 379 170 449211 403123205 377401 307241 415313474469281342152411306352262 276483 938554497459 365267483
    Billiards
    654 440
    brainfuck
    816883 468 823
    Card Number Validation
    857 930
    Catalan Numbers
    630477155 26442640 118 2019242315 19 29 437 16106 3914 1415 53538510115498171,000489 1147 531296619 305174
    Catalan’s Constant
    5192105185155 172134123147 1018610410776 82 99 16843 8196 17566 4573 1391825582086611367627112557 55199 67157916098 136208164
    Christmas Trees
    7985878667120 144546141156 134103164118156 134 49 19256 1243238 142115 9661 13213717714062013339137785114489 102158 806232147158 13775130
    Collatz
    71490675413 228231921 58 2916271624 24 5 248 1484 2013 1410 178281615183248512013 1527 48352126 172121
    CSS Colors
    379113 505
    Cubes
    55275353349 27474551 5138564661 59 42 5427 412319 5239 3725 5060726434512485344534 3153 37855864 534154
    Day of Week
    1,000904 924 275
    DFA Simulator
    445
    Diamonds
    55535283964 31727579 8862887275 77 33 9430 703020 8463 5529 73721038345612274607142 4890 7411359182 723979
    Divisors
    233687585248 9187055832 149 5741655750 54 21 7920 52711 5938 3318 545270616494213541,00030824 3866 151885458 493052
    Emirp Numbers
    238404341813337 518572468484 786 631451548440465 477 158 525241 43713392 416369 444143 40743367837335748998531736479816 418647 1,000797553556 425560536
    Emirp Numbers (Long)
    49545462068 94817781 199 9859897390 105 29 9730 623113 7851 5823 6442117765059158056773755 59102 1972178589 6111586
    Emojify
    612 787
    Evil Numbers
    131356818919345363498845470824346457557330571382853159608 584356154345895548197735472127933735133632953881227273803767412108445213294358894257065973606155141,000753160605613136467518494
    Evil Numbers (Long)
    62085785415 229092328 76 2515342031 28 5 338 2284 2516 187 19103616142232489120714 1531 718432429 181924
    Factorial Factorisation
    689957 110 798
    Farey Sequence
    902
    Fibonacci
    81238943938186233286958282852688542633872327164360242345396247183888657436694 1995486653859489224419777276253222367904686248502769471947928718041662585540304773399233201302306
    Fizz Buzz
    801459031,00085346670960139931 380 664122194142175 128 9334 19186 952115506 1531,000 85372 9311182328189551,000100172983156911 877217 922223129169 619112168
    Foo Fizz Buzz Bar
    11151293114 7321419 42 2114201516 18 5 208 15104 1912 138 16821171115416141610 1322 585251819 151418
    Forsyth–Edwards Notation
    618656 989
    Fractions
    849632 646
    Game of Life
    794 770 74 678 692
    Gijswijt’s Sequence
    221 717
    Happy Numbers
    243402403768347 404701503511 754 692469574475539 462 150 568232 480272113 424425 426176 500421758364582609100542667547433 438685 1,000798595681 411473590
    Happy Numbers (Long)
    56938272099 16130117140 338 19595153123157 163 37 17448 1038424 13388 9146 119711951268312825149128119424 90191 346227168149 12795157
    Hexdump
    935 554
    Hilbert Curve
    37 433
    Intersection
    664
    Inventory Sequence
    6161264512 2242323 62 2216302032 36 5 298 20 3 2414 218 192040151316329202113 1436 110542825 172926
    ISBN
    747932440 826 788 490 622 722 574
    Jacobi Symbol
    720633 784
    Kaprekar Numbers
    615 303 995
    Kolakoski Constant
    455598184155 39115124142 12390100109125 108 104 14040 93191 13371 6843 150136335194711047786699561 59168 20157716599 133189151
    Kolakoski Sequence
    10152243418 3293339 4125393644 35 29 4713 3512 3624 277 3337474820211933512020 2241 841533841 271836
    Leap Years
    275995788641 6090066806 161 7843885861 64 18 9229 5515419 6946 4731 233488180793563117479649778 45659 933965871 504563
    Levenshtein Distance
    627750 588 369 558
    Leyland Numbers
    988880566795 46127122132 246 1127511810983 90 44 15931 7314322 12670 5340 829314612067852993817456 55145 325120141121 1079498
    ln 2
    90149 52 671
    Look and Say
    2626508247476306273824264172 8643718169 9468 71 9822 63200 8246475425 807091111295945657634428 41102 9291346463 724076
    Lucky Numbers
    5131058012 3151516 45 1911191316 18 5 205 12123 1710 116 131320141012318111010 1021 95381418 13816
    Lucky Tickets
    103 487
    Mahjong
    113
    Mandelbrot
    779 897
    Maze
    552 683 1,000
    Medal Tally
    752 644
    Minesweeper
    1,000 505
    Morse Decoder
    166 285
    Morse Encoder
    137169
    Musical Chords
    282 23628 10
    N Queens
    123 569 147
    Niven Numbers
    157369894951296290461875429829309403731323606340492366495 378323162100 497219 385138110326328321143374165 357338606319848447272480978366964582354550 1,000633429474525351406472
    Niven Numbers (Long)
    365937686 1081689 24 1241078 9 2 113 752 96 63 771174759774 510 251288 768
    Number Spiral
    391194253511459 49304340346 351278370363360 360 229 396138 34328367 336271 21899 394351409434257320292363256210161 249381 614664398444 338426349
    Odious Numbers
    126323603921273 463860478821 701 547367553400580 422450 101 540179 45513994336353349 407127 375371744339788487282560870410727 359624 1,000725460544 396436523
    Odious Numbers (Long)
    61867992315 372923732 79 2515342031 27 5 338 22155 2516 177 192036171420142587218686 1531 662412326 181824
    Ordinal Numbers
    865964 1,000
    PalindromemordnilaP
    1,000 988 880
    Pangram Grep
    957915 571 586 137 140 99 219 610 889 1,00015748
    Partition Numbers
    106 889
    Pascal’s Triangle
    356070174182 2262597585 236 7470989188 91 62 13130 892017 9765 5719 898611512830667518598246813 56104 1051569381 834892
    Pernicious Numbers
    128267727750240 370696364604 745 442245426301444 324 94 441143 34914977 291239 306123 293291549267429340196414833345571 276458 953542333349 289343365
    Pernicious Numbers (Long)
    1228132 36713687 9 32423 3 1 41 3 1 32 21 22424872038253750 24 729433 233
    Poker
    280 466350
    Polyominoes
    123
    Prime Numbers
    171440750889393 498897554793 697 631403563462532 449 653 626850 4021441,000 419350 380111 406471786698778581337561930346875 939670 1,000846588656 466447547
    Prime Numbers (Long)
    375496677 88879781 30 971289 10 3 13950 731,000 5735 62 981298188199785808 611 202346910 869
    Proximity Grid
    749
    QR Decoder
    587 321
    Quine
    1,000 5961,000 172527 418 578 667 600 1,000 854958963 735 492 1,0006321,0008931,000750 969478630 962682 4081,000 638 286
    Recamán
    215347458145 82747576 190 9551956177 100 18 9432 645815 7744 6132 57611095341541181675742 47100 2121248090 588375
    Repeating Decimals
    1 445
    Reverse Polish Notation
    574877
    Reversi
    693 672
    Rijndael S-box
    195 180 525
    Rock-paper-scissors-Spock-lizard
    506 184
    Roman to Arabic
    448763 393 502 676 399
    ROT13
    975 988
    Rule 110
    446506848 55195559 74677 7 93 522 75 42 7899354580564 47 5381186 47
    Scrambled Sort
    877 465 486
    Set
    973
    Seven Segment
    176 650
    SI Units
    36 142 676
    Sierpiński Triangle
    7175100782123 106604116661 1458612986133 120 85 17264 1263749 8585 8357 120135173188799288117101119575 89150 99223113145 10957104
    Smith Numbers
    294115821147 20515553 151 10146645386 75 20 6830 521759 5639 4423 56558351405154757175349 4572 3771536573 505374
    Spelling Numbers
    559 510 509
    Star Wars GPT
    638 535
    Star Wars Opening Crawl
    39
    Sudoku
    718 489
    Sudoku (Fill-in)
    370 468
    Ten-pin Bowling
    464 218
    Tic-tac-toe
    784 738 772
    Time Distance
    472
    Tongue-twisters
    559416592852528 80536497536 587 588490491543507 517 558 539466 549521425 508504 497474 537562651553498544493607501544510 480604 878687564533 509559530
    Topological Sort
    1,000 457
    Tower of Hanoi
    14 2059148 22 7 86 23
    Transpose Sentence
    955 853 543
    Trinomial Triangle
    667
    United States
    588 71 758
    Vampire Numbers
    28113298178141 45112113118 407 181110119108155 134 62 13544 9327225 12088 8746 127138207171761221191329812488 96137 697316126168 127143144
    Van Eck Sequence
    5181241513 3252224 74 2617311726 30 5 296 17323 2312 198 15163514 151621 1914 1533 30362728 172025
    Zeckendorf Representation
    813 818
    Zodiac Signs
    505742 456 683
    γ
    844 724
    λ
    187198567707549 249283218299 200 219186193222226 213 384 285109 193428 271172 146174 558545555575168535183222162543180 152348 788577550242599529567544
    π
    385392134130 84106107125 45669010063 70 80 15033 6870 12059 3162 12214717819325945254161108127 42150 79022314783281118145123
    τ
    385592134131 88106106125 51669010265 73 79 15033 6970 12261 4062 122146179193279452556410847 42150 77822414783281120145123
    φ
    305891135134 5811096111 5256787658 62 80 11023 6050 8349 3757 121145180197319247495210127 35154 7901881464027886136117
    √2
    295793153133 5510789109 4456807859 64 80 9325 6275 6151 3655 123144176196279548484810432 35145 7882271414028083147127124
    𝑒
    29446486109 598694106 3958808749 60 70 13024 5551 10249 3141 97117128144266540494775516 39111 78617710468221909290139