The Tower of Hanoi hole will go live in approximately 21 hours. Why not try and solve it ahead of time?
Farey Sequence in all languages in chars. Achievements Cheevos Holes Languages Medals Miscellaneous All Holes 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Minesweeper Morse Decoder Morse Encoder Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Tower of Hanoi Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig 05AB1E ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig Experimental Language 05AB1E ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Hole All 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Minesweeper Morse Decoder Morse Encoder Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Tower of Hanoi Turtle Tutorial # Golfer Points Chars Time Submitted 826th typeswitch-dev 🇵🇹 507 151 4ms 25 Jun 2024 827th alphafalfa 506 107 2ms 26 Aug 2024 828th dokutan 505 100 7ms 28 Oct 2024 829th minhtrancccp 505 111 11ms 1 Dec 2023 829th croc54 505 111 22ms 30 Dec 2024 829th Mikey-Beep 🇬🇧 505 111 20ms 24 Jul 2025 829th CommandLeo 🇮🇹 505 111 21ms 1 Nov 2025 833rd MeWhenI 🇻🇦 505 132 89ms 1 Dec 2023 834th snoozingnewt 🇺🇸 502 133 91ms 15 Oct 2025 835th msbranicky 501 111 976ms 2 Jan 2024 836th KatieLG 🇬🇧 501 170 4ms 3 Dec 2023 837th knutae 🇳🇴 500 112 21ms 16 Dec 2023 838th scpchicken 🇵🇼 497 90 3ms 13 Dec 2023 839th janbehrens 🇩🇪 496 97 593ms 9 Jan 2024 840th mathisfun271 496 113 19ms 23 Dec 2023 841st msbranicky 496 142 25ms 6 Jan 2024 842nd Yewzir 🇧🇪 494 112 6ms 5 Feb 2024 843rd dokutan 492 163 133ms 6 Nov 2024 844th snoozingnewt 🇺🇸 491 116 721ms 15 Oct 2025 845th dokutan 488 111 2ms 28 Apr 2025 846th anarconic 487 115 11ms 11 Dec 2023 846th moustave 487 115 20ms 19 Nov 2024 846th damoose717 487 115 20ms 23 May 2025 849th HumanEquivalentUnit 487 133 17ms 5 Dec 2023 850th Protothor 485 119 10ms 20 Jul 2025 851st snoozingnewt 🇺🇸 484 112 2ms 15 Oct 2025 852nd NanduBC 483 116 11ms 6 Sep 2024 853rd msbranicky 483 130 2ms 2 Jan 2024 854th Yewzir 🇧🇪 481 100 183ms 26 Feb 2024 855th msbranicky 481 134 2ms 2 Jan 2024 856th tomh1012 481 152 422ms 17 days ago 857th madeforlosers 479 113 2ms 8 Dec 2023 858th dokutan 478 140 50ms 29 Oct 2024 859th snoozingnewt 🇺🇸 475 167 4ms 15 Oct 2025 860th MaxCastella 🇫🇷 473 89 734ms 1 Dec 2023 861st dokutan 473 149 17ms 83 mins ago 862nd HumanoidCPU 472 132 79ms 5 Jun 2024 863rd RockOfStone 471 140 7ms 23 Mar 2024 864th msbranicky 469 118 4ms 2 Jan 2024 864th dokutan 469 118 4ms 10 Apr 2025 866th trinityy-7 469 123 24ms 6 Dec 2023 867th Feniske 🇫🇷 468 90 221ms 1 Dec 2023 868th emgordon154 467 62 2ms 1 Oct 2025 869th dokutan 467 135 1,274ms 31 Mar 2025 870th dokutan 466 126 110ms 26 Oct 2024 871st msbranicky 465 144 43ms 2 Jan 2024 872nd AsbestosSniffer 464 184 937ms 1 Dec 2023 873rd cmkb3 463 91 213ms 1 Dec 2023 874th msbranicky 463 117 2ms 6 Jan 2024 875th TinyTheBrontosaurus 463 121 24ms 3 Dec 2023 875th RobertHoeh 463 121 13ms 9 Dec 2023 875th klixel 🇨🇦 463 121 11ms 21 Jun 2025 878th snoozingnewt 🇺🇸 462 145 54ms 15 Oct 2025 879th CatsAreFluffy 461 140 5ms 31 Jan 2024 880th msbranicky 460 159 324ms 2 Jan 2024 881st Liibe 456 166 354ms 2 Oct 2025 882nd Stockoh 🇫🇷 455 123 10ms 23 Apr 2024 883rd pedro-a-soares 455 127 9ms 6 Dec 2023 884th snoozingnewt 🇺🇸 454 158 26ms 15 Oct 2025 885th snoozingnewt 🇺🇸 453 92 51ms 15 Oct 2025 886th MeWhenI 🇻🇦 452 89 107ms 1 Dec 2023 887th yuchuehw 452 124 21ms 15 May 2024 887th Flekay 🇩🇪 452 124 20ms 11 Jul 2025 889th HumanoidCPU 450 139 116ms 5 Jun 2024 890th aydamak 448 93 36ms 15 May 2024 891st estomagordo 🇳🇱 448 125 11ms 25 Mar 2025 892nd msbranicky 445 153 101ms 2 Jan 2024 893rd Vaekor 444 126 11ms 28 Feb 2024 894th Kaffeleif 444 156 12ms 13 Mar 2024 895th HumanoidCPU 441 165 2,925ms 24 Oct 2024 896th h3ra993huskp 🇯🇵 440 172 348ms 13 Apr 2025 897th snoozingnewt 🇺🇸 439 115 7ms 15 Oct 2025 898th 4ndyJ 🇬🇧 438 128 11ms 29 Feb 2024 899th BambooleanLogic 🇸🇪 437 132 26ms 1 Dec 2023 900th sidok 434 111 469ms 26 Apr 2024 First Prev 826–900 of 1,459 Next Last