The Tower of Hanoi hole will go live in approximately 10 hours. Why not try and solve it ahead of time?
Happy Numbers (Long) 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 898th Alex-x90 🇺🇸 736 95 21ms 13 Feb 2023 898th mathb0y512 736 95 508ms 22 Sep 2025 898th jacekwladzinski 736 95 19ms 2 Oct 2025 904th SirBogman 🇺🇸 736 254 43ms 23 Nov 2022 905th olivermrose 🇺🇸 735 65 46ms 27 Oct 2021 905th KatieLG 🇬🇧 735 65 39ms 10 Apr 2022 905th yzhs 🇩🇪 735 65 42ms 20 Jul 2022 905th DialFrost 🇸🇬 735 65 90ms 28 Jan 2023 905th edsrzf 🇳🇿 735 65 94ms 5 Nov 2024 910th AlephSquirrel 735 95 2ms 8 Jun 2023 911th snoozingnewt 🇺🇸 735 114 13ms 30 Sep 2025 912th jerrandolph 735 162 253ms 3 Nov 2023 913th arctouch-cristiannevianna 734 105 373ms 26 May 2023 913th annaproxy 734 105 367ms 11 Apr 2025 915th jared-hughes 734 128 60ms 20 Jul 2022 915th Alex-x90 🇺🇸 734 128 52ms 14 Nov 2022 917th yokasuretsu 733 51 167ms 16 Nov 2021 918th MeWhenI 🇻🇦 733 68 1,690ms 28 Jan 2023 918th Feniske 🇫🇷 733 68 1,557ms 7 Nov 2023 920th AlephSquirrel 733 81 10ms 8 Aug 2022 921st snoozingnewt 🇺🇸 733 136 145ms 29 Sep 2025 922nd dokutan 732 109 103ms 11 days ago 923rd snoozingnewt 🇺🇸 731 105 43ms 1 Sep 2024 924th GrayJoKing 🇦🇺 731 113 407ms 28 Feb 2022 925th Yewzir 🇧🇪 730 90 40ms 14 Jan 2024 926th pascscha 729 96 20ms 28 Mar 2022 926th vhoulbreque 🇫🇷 729 96 357ms 13 Aug 2022 926th Fanrco 729 96 311ms 4 Sep 2023 926th Europe2048 729 96 20ms 24 Nov 2024 930th Schmitt-Very-Cool 729 129 329ms 30 Sep 2025 931st scpchicken 🇵🇼 728 137 154ms 19 May 2022 932nd targrik 726 164 253ms 30 Jun 2025 933rd albanian-laundromat 726 190 505ms 18 Oct 2025 934th annaproxy 725 105 35ms 8 Jan 2023 935th pandapawskat 724 66 56ms 7 Oct 2021 936th randolchance 724 82 10ms 11 Jan 2023 937th MeWhenI 🇻🇦 724 118 40ms 13 Feb 2025 938th Shanethegamer 🇺🇸 724 121 53ms 15 Dec 2022 939th DialFrost 🇸🇬 723 110 91ms 16 Nov 2024 940th emgordon154 722 36 8ms 3 Nov 2024 941st dcgjb 722 69 985ms 6 May 2024 942nd RockOfStone 722 106 2ms 4 Nov 2021 942nd frosster 722 106 15ms 26 Mar 2025 944th GolfingSuccess 🇬🇷 722 112 4ms 11 Sep 2022 945th MeWhenI 🇻🇦 722 116 57ms 13 Dec 2023 946th martinnorling 🇸🇪 721 97 66ms 2 Feb 2022 946th Pyroan 721 97 25ms 14 Mar 2025 948th GolfingSuccess 🇬🇷 720 97 2ms 19 Mar 2025 949th Yewzir 🇧🇪 719 113 120ms 14 Jan 2024 950th emgordon154 718 100 13ms 27 Dec 2024 951st lynn 718 106 43ms 16 Nov 2021 952nd janbehrens 🇩🇪 718 115 428ms 23 Mar 2022 953rd Yewzir 🇧🇪 716 113 3ms 13 Jan 2024 954th tayloia 🇬🇧 715 83 12ms 11 May 2023 954th acollett89 715 83 11ms 4 Aug 2025 954th CaedenHarper 🇨🇦 715 83 14ms 15 Sep 2025 957th Shanethegamer 🇺🇸 715 86 769ms 26 May 2025 958th CaedenHarper 🇨🇦 714 67 94ms 31 Aug 2025 959th BrenSchaap 714 98 20ms 21 Oct 2021 959th Andrey135296 714 98 21ms 3 Jan 2022 959th mikehanus 714 98 20ms 21 Nov 2023 959th Troon 714 98 61ms 14 Feb 2025 959th csharpython 714 98 19ms 17 Jul 2025 964th janbehrens 🇩🇪 713 98 2ms 21 Sep 2021 964th RYNO8 713 98 2ms 16 Aug 2022 964th dokutan 713 98 7ms 23 days ago 967th DialFrost 🇸🇬 710 114 11ms 28 Oct 2024 968th primo-ppcg 🇹🇭 709 71 995ms 29 Nov 2021 969th HumanoidCPU 708 121 99ms 22 Jun 2024 970th Garklein 🇨🇦 707 84 10ms 20 Feb 2022 971st janbehrens 🇩🇪 707 109 334ms 21 Nov 2021 972nd scpchicken 🇵🇼 706 53 249ms 7 Mar 2022 973rd rollershutter 706 68 289ms 3 Jul 2024 974th andrewteske 706 99 20ms 18 Nov 2021 974th fourth-bit 706 99 19ms 11 Jul 2023 First Prev 901–975 of 2,015 Next Last