The Tower of Hanoi hole will go live in approximately 2 days. Why not try and solve it ahead of time?
Emirp Numbers in all languages in bytes. 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 Bytes Time Submitted 675th KrausRaus 🇺🇸 788 81 12ms 31 Dec 2021 675th inventshah 788 81 9ms 19 Jun 2022 678th DialFrost 🇸🇬 788 100 2ms 9 days ago 679th m-tkach 🇺🇦 788 115 29ms 18 Jan 2024 680th primo-ppcg 🇹🇭 788 176 1,577ms 15 Sep 2025 681st ovs-code 🇩🇪 787 69 133ms 17 Nov 2024 682nd KatieLG 🇬🇧 786 72 38ms 30 Nov 2020 683rd AaronGarbut 785 105 2ms 30 Jul 2019 683rd alexjlaberge 785 105 2ms 21 Jul 2020 685th fuzzylojik-golf 🇺🇸 785 112 433ms 30 Aug 2025 686th dcgjb 784 71 203ms 12 Sep 2024 687th ssilwa 784 85 43ms 20 Jan 2018 687th MeWhenI 🇻🇦 784 85 5ms 12 Dec 2023 687th 5cw 🇺🇸 784 85 12ms 20 Apr 2024 687th Matter1024 🇮🇳 784 85 10ms 10 days ago 691st prplz 🇦🇺 783 82 4ms 10 Jul 2021 692nd emgordon154 783 83 3ms 23 Dec 2024 693rd MeWhenI 🇻🇦 783 95 1,193ms 26 Oct 2021 694th anastos 783 96 157ms 23 Jul 2018 694th user189032 783 96 171ms 29 May 2019 694th yzhs 🇩🇪 783 96 224ms 24 Jul 2021 694th cbrt-x 783 96 251ms 19 Sep 2023 694th the-zammers 783 96 196ms 10 Nov 2023 699th Shanethegamer 🇺🇸 782 110 6ms 21 Mar 2023 700th SirBogman 🇺🇸 781 32 2ms 8 Feb 2023 700th DialFrost 🇸🇬 781 32 2ms 3 Feb 2024 700th bstrat 781 32 2ms 11 Jun 2024 703rd jared-hughes 781 92 2ms 17 Jul 2022 703rd primo-ppcg 🇹🇭 781 92 2ms 19 Jul 2022 705th GrayJoKing 🇦🇺 779 92 2ms 7 Feb 2023 706th primo-ppcg 🇹🇭 778 106 1ms 15 Oct 2020 706th Yewzir 🇧🇪 778 106 2ms 22 Dec 2023 708th doge1338 776 139 262ms 14 Dec 2020 709th hirosuzuki 775 86 9ms 24 Feb 2019 709th Sakaala 775 86 10ms 20 Apr 2019 709th bob-th 775 86 9ms 11 Aug 2022 709th BrunoVisnadi 🇧🇷 775 86 10ms 30 Sep 2025 713th alomiF 775 97 163ms 24 Aug 2024 714th snoozingnewt 🇺🇸 775 146 2ms 1 Oct 2025 715th yokasuretsu 774 50 92ms 22 Jun 2018 715th Shanethegamer 🇺🇸 774 50 96ms 27 Apr 2021 715th ovs-code 🇩🇪 774 50 150ms 8 May 2024 718th Yewzir 🇧🇪 771 69 70ms 11 Mar 2024 719th iznax 770 107 318ms 21 Nov 2021 719th dokutan 770 107 2ms 29 Apr 2024 721st GrayJoKing 🇦🇺 769 83 319ms 30 Mar 2021 721st MeWhenI 🇻🇦 769 83 10ms 6 Nov 2022 721st two-bad 🇬🇧 769 83 9ms 15 Feb 2024 724th boxjelly 767 98 269ms 5 Jan 2021 724th tobeannouncd 767 98 170ms 9 Jan 2024 726th Constructor7 766 87 9ms 24 Feb 2018 726th maartendeprez 766 87 9ms 16 Mar 2018 726th edre 766 87 9ms 1 May 2018 726th benwilliamgraham 766 87 9ms 26 Jan 2019 726th daedals 766 87 9ms 15 Apr 2019 726th villfa 766 87 9ms 25 Apr 2019 726th jiaminglimjm 🇲🇾 766 87 9ms 12 Dec 2019 726th thisishowmymindworks 🇳🇴 766 87 9ms 22 Jul 2020 726th anter69 🇭🇺 766 87 9ms 14 Jan 2021 726th HETHAT 🇩🇿 766 87 9ms 2 Feb 2021 726th vezzick 766 87 9ms 6 Mar 2021 726th ArmaanAS 766 87 9ms 21 Mar 2021 726th RYNO8 766 87 9ms 11 Nov 2021 726th tkr-sh 🇰🇵 766 87 9ms 14 Jun 2022 726th betaveros 766 87 9ms 9 Aug 2022 726th emirps 766 87 9ms 7 Feb 2023 726th CatsAreFluffy 766 87 9ms 8 Feb 2023 726th Just4FunCoder 766 87 9ms 22 Mar 2023 726th janbehrens 🇩🇪 766 87 9ms 20 Jun 2023 726th Grrisly 766 87 9ms 25 Mar 2024 726th abc7-12 766 87 9ms 10 May 2024 726th 5quiwyrm 766 87 9ms 14 Nov 2024 726th bltnppcnt 766 87 9ms 19 Dec 2024 726th fuzzylojik-golf 🇺🇸 766 87 10ms 9 Jun 2025 726th KasperKivimaeki 🇫🇮 766 87 10ms 12 Jul 2025 First Prev 676–750 of 3,109 Next Last