Ctrl+P again to print, arrows/tab to navigate results, enter to confirm

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

    Natanaelel 🇸🇪

    107,060
    102,367
    💎1
    🥇157
    🥈41
    🥉78

    Will eventually allow for logging in with any supported OAuth connection.

    122 / 122 Holes

    🔣

    60 / 62 Langs

    🏆

    73 / 95 Cheevos

    📅

    1 Referral

    12 Days of Christmas
    1,376th 2,164th608th 1,104th 1,236th 2,348th 1,393rd
    24 Game
    199th 285th 406th 252nd
    99 Bottles of Beer
    864th 2,901st 1,276th 2,773rd 1,578th
    Abundant Numbers
    1,483rd 2,975th 2,248th46th 980th 450th 262nd 1,450th 1,392nd 182nd 2,001st
    Abundant Numbers (Long)
    1,200th 89th 982nd 1,058th 57th 1,562nd 153rd 597th
    Arabic to Roman
    320th 499th 1,338th 236th1,537th 1,479th 1,115th
    Arithmetic Numbers
    326th 1,777th519th 103rd 662nd 780th 1,002nd 1,331st 556th
    Arrows
    957th579th 793rd 493rd 725th 835th 511th
    Ascending Primes
    355th 6th524th 48th 288th 250th
    ASCII Table
    878th 461st 1,340th356th 1,229th 1,489th 1,177th 630th 650th 315th
    Billiards
    173rd 191st 214th 215th
    brainfuck
    1,121st749th 791st658th 231st 419th 612th 728th 879th 659th 843rd 431st 989th
    Card Number Validation
    296th 392nd 111th 126th 261st 223rd
    Catalan Numbers
    620th 1,045th213th 14th 782nd 1,320th 813th 174th 107th 258th
    Catalan’s Constant
    384th 164th 3rd 644th 474th
    Christmas Trees
    2,292nd 358th 706th 409th 377th 852nd 564th 1,193rd 489th 2,092nd
    Collatz
    2,589th 865th 862nd 1,086th1,950th 1,340th663rd 962nd911th 95th 926th 1,051st 822nd2,086th 1,475th 775th 284th593rd
    CSS Colors
    416th 680th 192nd 415th 922nd 438th 538th 576th
    Cubes
    369th 752nd407th 868th 501st 544th 455th 851st 469th
    Day of Week
    667th 552nd 1,262nd 951st 1,142nd 155th 1,026th 860th 772nd
    DFA Simulator
    253rd 275th 186th 288th
    Diamonds
    308th 750th302nd 421st 852nd 581st 726th 893rd 612th
    Divisors
    4,597th3,575th 2,222nd2,758th2,624th 4,873rd2,972nd 1,667th2,948th 3,867th3,291st 1,866th207th 199th 4,102nd1,912th 244th 1,966th 2,255th1,131st3,727th 1,149th 891st 1,437th316th 4,849th
    Emirp Numbers
    1,800th 1,622nd 1,621st784th 390th 242nd 1,372nd 1,420th 70th 1,195th
    Emirp Numbers (Long)
    740th 374th 217th 151st 39th 776th 791st 52nd 347th
    Emojify
    331st 324th237th 518th 253rd 534th 317th 349th 364th 307th 879th
    Evil Numbers
    4,614th 2,925th 1,040th 1,276th 2,395th1,572nd 183rd 2,889th 1st 2,007th 44th 1,281st 705th424th2,981st668th
    Evil Numbers (Long)
    2,220th 712th 1,020th 77th 1st 1,655th 1,195th 1,632nd 971st924th
    Factorial Factorisation
    485th 297th 233rd 261st 564th 594th 319th 180th
    Farey Sequence
    716th 497th765th 623rd 381st 422nd
    Fibonacci
    4,735th5,571st6,310th6,182nd2,629th8,889th1,860th845th2,386th5,371st7,359th5,139th4,039th7,211th4,570th3,810th4,364th8,540th7,197th2,773rd6,001st8,878th4,010th964th1st395th9,098th4,020th5,698th6,688th221st2,450th7,099th3,836th4,551st502nd4,359th7,884th4,821st3,626th4,031st5,840th8,942nd55th9,050th1,928th4,524th1,089th2,900th8,204th7,288th7,885th3,554th5,304th8,369th4,526th8,852nd4,899th5,948th
    Fizz Buzz
    8,234th 12,681st 12,771st5,179th3,620th 11,136th 5,635th 8,766th5,779th 5,855th4,528th 7,788th 6,965th23rd 7,871st 5,479th 4,182nd 2,249th 1,549th 2,657th7,615th 10,808th
    Foo Fizz Buzz Bar
    1,911th 2,028th 1,014th272nd 2,229th 547th 1,853rd 1,945th 1,211th 756th 1,614th862nd 2,476th
    Forsyth–Edwards Notation
    595th 296th 46th 670th 137th 140th 154th
    Fractions
    350th 611th883rd 583rd 1,263rd 124th 10th
    Game of Life
    426th 272nd 397th 697th 316th
    Gijswijt’s Sequence
    94th 558th 437th 400th 651st 387th
    Happy Numbers
    1,684th 1,459th 1,202nd 1,728th 791st630th 540th 2,204th1,663rd 309th 1,533rd 1,235th 224th 1,486th1,423rd 1,019th
    Happy Numbers (Long)
    1,030th 595th 887th190th 382nd 2nd 1,175th 792nd 53rd 694th352nd
    Hexdump
    670th393rd 663rd 689th 209th 602nd 513th 368th
    Hilbert Curve
    418th 271st 200th
    Intersection
    522nd 1,203rd215th 858th 425th 516th 1,120th 987th
    Inventory Sequence
    360th 469th 302nd 554th 36th 549th 369th 618th 26th859th
    ISBN
    1,428th 1,448th 678th 1,130th313th 923rd 386th 685th 673rd 1,079th 393rd 690th 1,417th
    Jacobi Symbol
    406th 670th 626th 575th
    Kaprekar Numbers
    589th 412th 357th 427th
    Kolakoski Constant
    334th 17th 276th 395th
    Kolakoski Sequence
    1,195th 1,211th954th 515th 1,099th 843rd86th 102nd 1,005th 1st 868th 444th 67th 225th993rd 1,160th
    Leap Years
    4,017th 4,411th 3,093rd1,595th 1,468th 467th 1,238th 1,849th 1,482nd 1,846th 1,855th 4,239th
    Levenshtein Distance
    490th 789th420th 678th 671st 742nd 429th 719th 54th
    Leyland Numbers
    1,373rd 941st 697th183rd 266th 1,069th 909th 943rd 386th 679th 1,243rd
    ln 2
    609th255th 294th 395th 3rd 391st 516th 166th 743rd
    Look and Say
    1,861st 955th 197th 1,289th237th 539th 256th 571st 790th 125th 291st 691st
    Lucky Numbers
    255th 405th 562nd 396th 726th 274th 461st 972nd
    Lucky Tickets
    344th 465th 452nd
    Mahjong
    156th 206th 190th
    Mandelbrot
    237th 193rd 264th 337th 167th 244th
    Maze
    373rd 219th 391st 297th 327th 326th 334th 294th
    Medal Tally
    337th 30th 449th 379th 272nd
    Minesweeper
    141st 240th 197th
    Morse Decoder
    307th 329th 108th 310th 135th 437th 396th 377th 326th 496th
    Morse Encoder
    264th 318th 335th 242nd 372nd 374th 309th 542nd
    Musical Chords
    291st 467th 280th
    N Queens
    89th 103rd 423rd 160th 200th
    Niven Numbers
    3,695th 2,738th 2,857th 1,952nd1,409th 1,703rd 3,305th1,822nd 1,627th 1,026th 1,641st 1,843rd 569th 2,009th 1,907th
    Niven Numbers (Long)
    1,090th 1,018th861st 1,084th 302nd 752nd 1,581st 233rd 181st 70th 1,976th
    Number Spiral
    171st 212th418th 1st 583rd 8th 577th 525th 147th 338th 559th
    Odious Numbers
    1,947th 2,167th 1,977th 1,607th 1,889th1,507th 139th 1,040th 1st 2,052nd 1,519th 799th268th
    Odious Numbers (Long)
    1,403rd 680th 979th 119th 1st 1,839th 1,419th 1,489th 1,100th856th
    Ordinal Numbers
    1,385th 733rd 1,454th 509th 1,296th 1,512th 1,297th 1,094th
    PalindromemordnilaP
    209th 78th 135th 96th 49th 14th 521st312th 30th 63rd
    Pangram Grep
    2,182nd 1,967th 2,019th 422nd1,359th 1,987th1,709th 644th564th 934th 1,696th1,599th 590th 2,331st 635th1,144th 900th 513th 321st 1,859th2,444th1,507th 1,902nd
    Partition Numbers
    61st 59th 1st 409th 492nd 262nd 392nd
    Pascal’s Triangle
    2,123rd 1,301st 935th558th 924th 966th 89th 2,326th518th 567th 135th 986th 2,502nd
    Pernicious Numbers
    3,002nd 1,032nd 1,086th 1,326th 1,328th 1,804th 560th 784th 992nd 252nd 1,197th 1,121st
    Pernicious Numbers (Long)
    532nd 758th 84th 204th 707th 334th
    Poker
    280th 301st 444th
    Polyominoes
    152nd 156th 119th 132nd 204th 130th
    Prime Numbers
    4,661st 2,243rd3,128th 234th 2,435th311th 1st 2,287th 1st 2,550th 588th 208th 1,422nd 667th
    Prime Numbers (Long)
    2,361st 1,513th 158th 381st 1st 1,660th 1st 1,373rd 1,565th 813th 310th 2,475th
    Proximity Grid
    257th 217th 292nd 432nd 272nd
    QR Decoder
    294th 171st 143rd 297th 326th
    Quine
    30th 258th 4,308th2,376th4,618th 5,436th 2,915th 3,791st2,999th 2,417th3,392nd1,128th 1,594th 3,754th2,147th 3,580th459th2,594th3,282nd1,616th1,809th 474th3,429th5,113th 545th 3,309th 1st4,897th 4,877th3,100th
    Recamán
    793rd 415th 686th 232nd 870th 1,103rd 1,120th 461st
    Repeating Decimals
    382nd 30th 319th
    Reverse Polish Notation
    935th 375th 1st129th 591st 382nd 596th 411th 652nd 500th 630th
    Reversi
    165th 204th
    Rijndael S-box
    572nd 374th 456th 392nd 503rd 259th
    Rock-paper-scissors-Spock-lizard
    73rd 150th 428th815th 199th 180th 453rd 136th
    Roman to Arabic
    656th 911th 868th 635th 462nd
    ROT13
    623rd 712th 736th 187th 252nd 357th 168th
    Rule 110
    840th 535th 455th 441st 247th 428th 346th 195th 992nd
    Scrambled Sort
    231st 38th 219th 17th 307th 258th 249th 73rd
    Set
    119th 120th 191st 289th 244th 78th 13th
    Seven Segment
    580th 466th 820th324th 498th 399th 182nd 794th 623rd 530th 717th
    SI Units
    153rd 239th
    Sierpiński Triangle
    1,842nd 317th197th 559th899th 1,030th 559th 763rd 893rd 606th 946th
    Smith Numbers
    295th 267th 422nd 819th 612th 583rd 406th
    Spelling Numbers
    183rd 189th 348th 446th
    Star Wars GPT
    137th 297th 170th 208th 184th 186th
    Star Wars Opening Crawl
    181st 288th 278th
    Sudoku
    332nd 172nd 441st 299th 416th 514th 280th
    Sudoku (Fill-in)
    291st 305th 192nd 354th 350th 279th 341st 253rd
    Ten-pin Bowling
    305th 476th 357th
    Tic-tac-toe
    242nd 387th 146th 248th 368th 187th 227th
    Time Distance
    143rd 471st 612th 411th
    Tongue-twisters
    1,249th 1,309th 669th 2,066th 2,104th 989th
    Topological Sort
    103rd 147th 213th 48th 170th
    Transpose Sentence
    536th 127th 252nd 217th 709th 325th 428th 625th 89th 757th
    Trinomial Triangle
    152nd 316th 93rd 269th
    United States
    595th 290th 625th 594th 718th 606th 677th 648th
    Vampire Numbers
    369th 368th 1,261st 439th
    Van Eck Sequence
    1,052nd 1,093rd 725th 102nd 589th 749th 726th 568th
    Zeckendorf Representation
    233rd 384th 340th 365th 538th 359th 324th
    Zodiac Signs
    246th 294th 309th 249th 465th 413th 428th 316th
    γ
    445th 1,263rd 1st 1,303rd 517th
    λ
    1,004th 1,812th 1,998th 292nd 346th 386th 555th 501st
    π
    2,820th 941st487th 146th 336th 146th 803rd 726th
    τ
    778th466th 213th 696th 110th 659th 612th
    φ
    338th 3rd 311th 421st 704th
    √2
    784th545th 374th 1,019th 103rd 511th 960th 633rd
    𝑒
    629th 217th 2,238th674th 576th