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

    Shanethegamer 🇺🇸

    111,530
    109,853
    💎122
    🥇650
    🥈385
    🥉514

    130 / 133 Holes

    🔣

    65 / 65 Langs

    🏆

    100 / 116 Cheevos

    📅

    12 Days of Christmas
    127211150913634853187 834878829176841 884847908926939838165957180208131891888157170885 129132976945173995945841932861983954179666838729202894189668172883903137175208966172 930703923227
    24 Game
    1220132032 17 20262413908 7292333202217169806932 555272717768 6 9842845214888419242586328152128131315163546322201494329433923401931
    99 Bottles of Beer
    1822161735153718 49770254017936 1776374471519957258062122 9804921417422 123499087951718800399226327682350742348346721171962319727470839192356020 7803661932
    Abundant Numbers
    88892239855290798787 813824874836904867862831909849827871910824824973 8448569587701,000 1,000711817835842917720960900764838787771707831704385797816972363933901835591441789343537792544851489
    Abundant Numbers (Long)
    178924785552899968 8539538748691,0001941,0008939779539739571,000973926973 1,0009739607701,000 1,0006921,000934895980725962984972971817924707877722779548169196493596394510810393161153973560985114
    Alphabetic Numbers
    57344935 32 42475134985 31223455503837547782 16355203430 31 4054343027 35505353 264627893334305328432149473490 715347157
    Arabic to Roman
    714 539 556702591 1,000 7471,000643674814 1,000 966696 675 709793605 705 617730719884471573554 765816486 585 1,000 886 730 752
    Arithmetic Numbers
    87918942 908 938958941922932 9866768319789768961,0001,000945890 97697611583 1,000 9719609493723098585995185387668690166122920567386490786910732369318309224
    Arrows
    838709836 844936923 750 918812882958863 8391,000933 898 883896822 793526 886906873921697835933 915862619 867828 859 981775896
    Ascending Primes
    65237101716176 124 9189079341229075515583469429219112022441,0001,000308 54391562126750 27 1,000922915143702436231819201,000 12684954413855814374263864785618620341887210450788205679247
    ASCII Table
    516263862 902334 809895792792899 796801832800803983425975844375 918796215 836 132 883815800662750237823800881965 743750588411750357 770794735 554883 838410881556
    Billiards
    769 843813863915 910 1,000949 992 829 946 761 873937 844 847 831 1,000
    brainfuck
    614 289522 845680469727752 806 852482789 838 801817605748614408409353 874 253 813 746 765407987
    Calendar
    821 908
    Card Number Validation
    723 813 857 807863 857833900929898802 835 962882 920 812858883 899707822967805769 815689 902 797662831 830 840491875
    Catalan Numbers
    1491303946 51 4485942168621201,0007959829578249179581,00067760 1,000935713831 4955765641,00047952 26556372 977489418451,0004867668970479495012966199631445443
    Catalan’s Constant
    518823192105120155125 13212314886118 7105788138281265381826301374121372501694360562 31423551376382271,0007311112918218520977107816277411546719668819912967157916195584136208148190
    Christmas Trees
    5773685484109 110 137713172826800 939532934817811794156796821142 92020457103884 31 976152854926815 929964976861 831709860137861114767124917158511 232713158293921402924217
    Collatz
    598114951628953984 855976927919963591,0009198951,0009869299801,000904710 1,0009378879924 789 9879899151,000865 9009611,000891921891868922249009295862084589891226359587854095978885937
    Connect Four
    657 732 1,000 1,000 747681 775 729 715
    Continued Fractions
    553 789 705 904 814
    CSS Colors
    202 112784871867 936743 909 679483692 906 1,000 630667677 878 882713 883 76152
    Cubes
    4064253953 48 47330523452 325006194542715609217959 1,000525273341 14 5944453645704 5973679172 409387403853345431445665349 855664 6593184495
    Day of Week
    969 1,000 1,0001,0001,000 1,0001,000 904 962537986907 894985 887593 1,000905 755 944
    DFA Simulator
    605 855837917 865681825979976922 1,000 898937 883 783949917 1,000 696970953 511784641 886 808 981 926 990
    Diamonds
    39854525446670263 55957661069808 7394948966466266481017867781 7625693060840 14 1,000667620600882 1,0006966779663952650435274684714566263953087 13471082 71932879141
    Divisors
    2495136875836959917 8708168689399521541,0008171,0009151,0001,0009761,000849968 8919548897101,000 1,0003391,0008408919257968759681,000971943933822845615541,0001,000560501,0001,00096388889707081021,000417984103
    Emirp Numbers
    158949401324556 492 572571512573857983880855753573541833622911792478 972639248452964 262433679602846892800510777573531687 909489431531882493800525881647717731797553549793528560536680
    Emirp Numbers (Long)
    33993545476 63 807179763492320782498829817888471131,000909931 9161163060897 26 95397696125773 91670267390577505954807017380084873102789138217817742226379886129
    Emojify
    713 443 311 391
    Evil Numbers
    117948341783447788925 9259159446071,0009739271,0009679539419611,0009381,000424 964988700450943 1,0006431,0009229746839391,0007849051,0009841,0008449058066359768957506139649497227027531,000605826930565936752
    Evil Numbers (Long)
    99531965718 17 7046877696131,000779521,0009689036588158678241,00021 93375272719915 900 6908386967558331,00086861375069589071865654724976600714258538847253843904286360342256547
    Factorial Factorisation
    14918483724126132110 552783617110904 7335629448897919771737238421521207136865895891 2944969803816100729 116875884791225911091021357419180135847781139610191911169 700104902236
    Farey Sequence
    68401485513 12 15988211381750884745767967938202297276917 1,000964514920 6 98895483314844 19960908976 11833101687075611176471989922229872233915182032
    Fibonacci
    881,000226943882977952 9799819868928307939448428211,0001,0001,0001,0001,0008138387469901,0008679711,000 889 9359831,0009709039299801,0009501,0009438578509649521,0007578262379621,0001,0005064829578364891,000483849585
    Fizz Buzz
    451,000141933965844918 8671729228218594171,0001,000797944974871743899887182391962800973125976 8467808619891,0001,0009677408319318718848299551,0007785539838869321321,000797667186224971986245946566911297
    Foo Fizz Buzz Bar
    698314977838843865 823787881840982431,00063688093397188357783681319 95477177414953 5 1,0009639191,0008315448579089157638249121,000829161,000168241587568363721259556822599061795431
    Forsyth–Edwards Notation
    710 718825759 823862841936946 1,000 971819 1,000 792955886 807 897907898 836702 894681 680704 949 807 880800872
    Fractions
    993 833494783719 903819929845974 1,0008779591,0009909389341,000964 9891,000 833 970971829913841780913810926953932639638613 1,000736857 1,000773988 985 953684865
    Game of Life
    642 727797783 977 720798735891750 742962 1,000 754 890837804 755 638676690890 588 756 811 789 809 877510
    Gijswijt’s Sequence
    71213169444 31 45615626483126658122 7278034311168416434 7387513329729 17 55659753267840 79610631621 225105548672832335538117118247310150677189585663
    Gray Code Decoder
    506 702 937 881702846844789 847787 870820 523838870 860 825719733 896 580 833774 876 864
    Gray Code Encoder
    948 745 930 1,000977 1,0009861,0009751,0009899879851,000 1,0001,000 750 1,000 9661,000 1,000 9847551,000 1,000935652 1,000 969 1,000942977 1,000 1,000
    Happy Numbers
    131939398698469579828 7989408168516109807097229816071,000 1,0001,0007546495481,000982929709986 3115178918098991,000817833717706526835 597788481542765692629598831731776659798750681726522473590717
    Happy Numbers (Long)
    3498592663397802909 7878569048518863639007459818989269261969429699596499461,000931779986 49525849927899983836806839814900840786597798707149878736619151833883774207227979149336957482890233
    Hexdump
    884 753 842 876 924 964 903 888 841 833 719 760 873
    Hilbert Curve
    7374273537 37 3538403172 356531395861648475155 10544423845 16 6542294433 474365131 3737388132403255304668571595969858812366101
    Intersection
    928 684 713787774 809 802807832832843965 1,000720 1,000886 925 750793803 796380 811782956825408865 831 482 670 770 888 819 857
    Inventory Sequence
    5391686015 17 92692194317654638365668729519119433696056020 1,000914818763 10 74491583918720 89285096188387563078277229885636478208099057003654937253879254680243
    ISBN
    969 889491790970 875891882888958 8718798109559548338381,000865 794892931 1,000 968983961733829861867949887993917831935808 901859505 838854901 983 944518968
    Jacobi Symbol
    756758784 746730712764 1,000 732 819746 686 546784 596541721 767 635625 804 793752
    Kaprekar Numbers
    98291115118401 130 156177187121237485153299123177156252241192207451 312784188158206 36 190647505181688 175161185232 124131219226157152218676124193209803501745283752165544174277
    Kolakoski Constant
    451272105598118155140 11550814492116 7877186367161289472238001751681443361414063595 22 278574649128543431071421352351948310491867459554015269416116220257716499332133189126181
    Kolakoski Sequence
    39991568816802779 78488284948722 897774943884818927871,0001316946697198892525798 11436907893817825857405955985962887770645662684338972158231900872522275392841638464561,00063
    Leap Years
    1991156863818682740 8858469118408501708759068008368208631,0007939527395069308711,000765980 889800877873909763727657722786696725690707918650571878679718607507781,000958469171122741579783128
    Levenshtein Distance
    832 630 766742800 825 6007971,0001,000 730 907937 1,000685 870 787685796 754488658694909343661 966 573 169 1,000 616 860 912617829
    Leyland Numbers
    49141886674 125 12777814978938258986694720991974974129952817145 8587283071961 16 943687729910783 699707732829 659752462939867060214080314068227812075612139812094759213
    ln 2
    43391875490102125106 105971186677 852536894101551497185142104198148244675 152923912563991,0005173116149151185349150528558641140381379867121913562275110189109147
    Look and Say
    73110265065 76 62658834281817879565198296879947851,0006574 8456842251953 13 95159864547920 74080080592975784149345658414467957930998024013465461138855338705148
    Lucky Numbers
    52313101281110 804813848127244577962766782115884237701412 648863512829 5 77989482224736 16815768776 620687111878310101663577658734386671845771859829
    Lucky Tickets
    621 629542 584 596 773 634 624739629 714 709 604 407 695 342 808 653
    Mahjong
    728 912 721 826759 865 1,000 183 872 921 566 692 922 655 739
    Mandelbrot
    112091118 12 1214131114 1013913141516151118 251771011 6 141411138 13131319 1012111510971291613242515224613171320
    Maze
    983 750 1,000 8009217941,000953 9489267659141,0009628001,0001,000 963940 959 9929479157141,000 8158981,000982 515944701 922835563 794823963 1,000 1,0004781,000
    Medal Tally
    988806 570849625917965 9168669781,0001,000921 1,000814 1,000893 901 923940953 9358038659419831,000 766910712 890755738 899786795 989 946626990
    Minesweeper
    736 992940 854 798981 903 945 996 873 827839 835 704786984 821 718
    Morse Decoder
    680
    Morse Encoder
    1,000
    Multitap Input
    652708 600 740 578 603 545
    N Queens
    50125586977 71 861081087367736662410769985897116122121101119 1791253868908 20 89120698858 10294115114 749581886487553112722111105123137117112214129227108180
    Nim
    881 730 664 927868 1,000 8758708549127831,000829 1,000 959 802877937 789 957929932 972 776630 846
    Niven Numbers
    938853668758869491,000 9071,0009329771,0009771,0008631,0001,0001,0001,0009861,0001,0001,0007421,0009891,0008511,000 1,0007371,0009701,0009141,0008401,0001,0001,0001,0009878759771,0004809789749645949441,0009556836331,0009797111,0007091,000665
    Niven Numbers (Long)
    21,00066766 831 8271,000863927909259806831,0001,0008929849789851,000915 8869031,000701969 1,000 1,0008499629331,000852831747838760703561714691998068590081,000762825171281382282750585915
    Number Spiral
    248518193253307 303 285349364275321 253357278375374541363807462433 534412140261679 53460309388577272218477393390408409 257320302363602212201449249353366 664398444 347426349577
    Odious Numbers
    115888319745443774902 8429178956231,0009738641,0009679389239611,0009391,000417 947988737434926 1,0007311,0009238817639711,0008049071,0009851,0007889257506358898727275649669676836947251,000544778955596958745
    Odious Numbers (Long)
    89531857118 16 7216918076451,000818671,0009689016538158678211,00021 93375275019947 1,000 7008617227928291,00092361378172395750065556025872571706237638977223741902266159741456548
    Ordinal Numbers
    1,000 662 839 766784784885800 909844783939856836 797894 977872 925 8538781,000632973532894952877825577765810775434920774688 774844805 1,000907 859630887
    PalindromemordnilaP
    792 504 733 726725 885852694832825692518952 1,000 846 545 857596800593817 686800694650 920 662 706 990
    Pangram Grep
    1,000 833 864 587679621970853 954827961830806844 989787 9288381,000 1,000 700600910790894814860 9849181,000991823533587597503935 889 848 1,000 120746 874327971
    Partition Numbers
    45200907372 86 1061351339162628252813680126115562162544106149 5531594587611 19 611139546111540 113667642713 748874112505708410451713512578627411013616959792127192
    Pascal’s Triangle
    6389259681558883942 8338308517468892481,000690915846851810699973720950 9129573068922 1288294086582560957750904973944830925680776645851,0001,000520831,00090189210515696181168930344791178
    Pernicious Numbers
    969052641,000805942943 1,0001,0001,0009739619791,0009261,0001,0001,0009061,0001,0001,000981 8161,0001,000914750 1,0006369769841,0008339717739771,0001,0001,0001,0001,0001,0001,0004141,0009749235149671,0009666125421,0003496871,0006861,000596
    Pernicious Numbers (Long)
    1,000223 2 3342787 926753897924371458291,0003 9115123 1 53496224898 333612 22239453767393543543383335
    Poker
    745 868 7859097147876631,000 932 979656 764 671659 790626 596939 807 787 726546 785 791841815
    Polyominoes
    48114315048 37 4351493858 3468394849665210178137 13167203733 12 8461364338 55667311283294641633447375827636924796161 531705552
    Prime Numbers
    119787435907741934895 8679398909291,0009738848417958459159138031,0001,0008064859731,000236596956 9001,0001,0009219237258111,0001,0008727168466679038116675619093649136719399388776958469265457711,000607870766
    Prime Numbers (Long)
    378978338861898 9029309058541,000309777189759449678399759091,00095554990286437927 9001,0001,0009228267608721,0001,00087085586085875083346999785875109431,0008171616964102391835296419
    Proximity Grid
    699 667 609 910 882 873 738 672 571 934 628 869
    QR Decoder
    862
    Quine
    1,000 5961,000726 9235141,000609892627 8441,000556417918977 600462 1485191,000 854958 9631,0009198931,0001,000 1,0006961,000893750750 9693861,000 1,000682 356730732 387 322
    Recamán
    22127533848 54 747109775081119986486792090588890910996945970 8859113253860 40640785660895753833537938930972825 60765349818847326036484069582411612494890199957582944130
    Repeating Decimals
    826 720 9599481,000896 955 1,000 962867 929 6681,000 517888975 728 868 842 773
    Reverse Polish Notation
    647 569811677 975 8366689338939061,000 1,000878 1,0008551,000 974 911827888781864 920730884974 754651657 877 500 900774821 1,000 925280945
    Reversi
    684 858 725 760 1,000726592723644677 800 797948 792 630641818 858 618675934 982 618720 757 9721,000800
    Rijndael S-box
    21534166178143 201 98179127168268559158265114143234311306170184334 60319599168268 68 159194163299299 226207170289117146154155273163187135490133161246363662275284638131314281210
    Rock-paper-scissors-Spock-lizard
    710811631529 752549 783 395 599 663 495575 731 728 616 572592682
    Roman to Arabic
    784 820895 703754767 792 9446771,0009081,000962 9821,000 1,000986 976 903895868 904 9808779851,000824821797 1,000714868 968401 982 953814976
    ROT13
    718 685725 882 583703 862 692770 911 667 582 913 881 940746656 889 958 921 778 742120
    Rule 110
    5104558716 6895857095717 6055766266967769780168 76074934581 1 6507616826550600687727905742658256658507560352966615585551 117936 74233379410
    Scrambled Sort
    889 839869 973808908865 881 1,000 809 885 1,000 1,000 935 840789818649891 802 978 929 672
    Set
    847 904 771 845 798 978 750 849 679 897 742
    Seven Segment
    787 576 344594430 639741711731 617 594 1,000670 688 630638709 621 624639739 728500539435 712 471 752665695 778 714854747
    Sierpiński Triangle
    932537561110974792 690618729108761 767686706649859763162747140136 6996996582596 32 73767057699701 11472678088371362956090117770705605154803635636 223686136 656254787199
    Smith Numbers
    20100414251 49 6167476924689615575810079277364893931,000835645559628173052713 27 748743640111672 666617428826214835504347577653818678006937413771537647318272535474789
    Spelling Numbers
    899 918 970959987959961 6791,0009061,0001,000990 958566 5491,000959 835 1,000702956 8027575881,000940989895716990789 672959377 901889 9437561,000
    Star Wars GPT
    823 745 1,000 955 860 835 715 735 986 835 676 973
    Star Wars Opening Crawl
    965 355
    Sudoku (Fill-in)
    60
    Taxicab Numbers
    35151719 28 2025251522 672281623232227272536 563081820 4 2226161318 23192332 13201627731131223162732659272630 20142540
    Ten-pin Bowling
    633 678619636 830 1,000 706 538592 525 669628 650 601 672 330
    Tic-tac-toe
    595 838564 773 600780681 848 826773 898 705 792 636 665707830 769 565 707 852607
    Time Distance
    908 951 867950882964958 9488839768401,0001,000 1,000 1,000879 884 9319719416901,000 981900943938992814968872 925865811 858841866 992 8701,0001,000
    Tongue-twisters
    478651415592577 603 536508554515556 495624490495557640470545556697 656556469495549 453 784559516534725 517548723651 501544506607499541513604483587633576691717533 718502530733
    Topological Sort
    618 894 786927 819 708982 882 976 994 1,000 878881672 1,000 718759750792 785 663
    Tower of Hanoi
    8511286714 12 929918966855880 945912873950956828860924870886 84125814725 6 89096288519918 943950952976 8651579020912161222870202212271519 8551691229
    Transpose Sentence
    818768 981 543791620936969 987803921788944923 983966 1,0009141,0007051,000 1,000 926801907959859 956990867801952527800809 946906478 929959729 992685 970489992
    Trinomial Triangle
    4255232627 39 35464832764 940382946417525686487146 816591331853 5 9384873024797 826424554 213024439558521943762493748074453784421124384
    Ulam Sequence
    135575256 64 6882926082 5279508185739311877128 127112295358 40 6899556451 738593104 46654671525140954593973232379773 11113575113
    United States
    951 80 432 263 928136 172 964670
    Vampire Numbers
    7120213298117 179 11212913599850423832303857696211107128980636168 93525644102804 33 837143642165797 736145965969 7612220213282820188106769132681540316825168615672175144184
    Van Eck Sequence
    5903171115 15 66073873571976775912807860830769824862962850215521,00086988918584 87357677668271662370090191496768765565349416219661956419848336583036945286692242586344
    Zeckendorf Representation
    1,000 806 1,000848 788890871935984 9808279779151,0001,000 1,000938 1,000968 956 1,000940913 885 9919491,000970773784757796 949882652 875968835 917 841940901
    Zodiac Signs
    718785899 919846898 919858932893759941 1,000 949775 883 924974962 880795 9511,000940958672843740 965 586 903762 861 979979965
    γ
    52392579124564548355557 26812328290137 11615494115143 2101881195483392882004772114 3165920190875361,000125130556361912570101544911031172088255166324157670578586131607257584544647
    λ
    187183576198561545550555 283613300200235 149521831227234 351819215546531524287110153229 92122938502644535656174190557545554576198535210222629414413551637289318665577551242599529567542253
    π
    38291955392102130104 1069481267486 913383727926843568163753611471112041503348381 201,0002501499231501,000627511914716119333394605494210865315570015011266522314783281118121111159
    τ
    38401955592102131104 1069391267586 928433736926878586163784611481102031503348387 201,0002511569541501,000627711914616119336094635594210865315470015011266522414783281120120111159
    φ
    30382025791103134106 110961125960 76833345654989468146411471511111971102334500 1523256874501651,000575411614516019723892494976810127130625149626651881464027886135111133
    √2
    2934201569397133109 1044081096157 873372509741926521416915214511120393253374 846262592646341481,00055501191441621963389552488911043951358331415666522714140280913124113132
    𝑒
    293314843646510986 5646006186170 83935168682710163313871347105966676752442691 12442173529714841,000416793707127144193451454984271464105796713926651776406822166981561144