The Tower of Hanoi hole will go live in approximately 20 hours. Why not try and solve it ahead of time?
Happy 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 671st Vaekor 880 69 12ms 9 Jul 2023 671st AVDestroyer 880 69 10ms 4 Sep 2023 671st m42km 880 69 9ms 7 Oct 2023 671st elgan65536 880 69 10ms 4 Apr 2024 680th Yewzir 🇧🇪 880 79 103ms 6 Dec 2023 681st JayXon 🇺🇸 880 143 1,608ms 15 Sep 2025 682nd primo-ppcg 🇹🇭 878 50 39ms 11 Oct 2020 682nd o0lit3 🇺🇸 878 50 11ms 19 Apr 2021 682nd armin-k1 878 50 9ms 8 Sep 2021 682nd nwellnhof 🇩🇪 878 50 18ms 26 Dec 2021 682nd Lydxn 🇨🇦 878 50 40ms 25 May 2022 682nd saito-ta 🇯🇵 878 50 20ms 27 May 2022 688th sean-niemann 🇺🇸 877 88 384ms 6 Aug 2024 689th snoozingnewt 🇺🇸 877 95 335ms 26 hours ago 690th primo-ppcg 🇹🇭 877 116 264ms 21 Apr 2020 690th kkoenig 877 116 251ms 5 Jan 2024 692nd KatieLG-Transpiler 🇬🇧 876 149 10ms 24 Jun 2022 693rd primo-ppcg 🇹🇭 875 53 239ms 19 Oct 2020 693rd MeWhenI 🇻🇦 875 53 263ms 15 Feb 2023 695th alo-gin 874 54 44ms 19 Oct 2018 695th hrrs01 874 54 110ms 14 Apr 2020 695th jared-hughes 874 54 33ms 9 Sep 2022 695th ovs-code 🇩🇪 874 54 68ms 9 May 2023 699th hemphen 874 84 342ms 28 Aug 2022 700th primo-ppcg 🇹🇭 873 77 1ms 13 Jul 2021 701st nwellnhof 🇩🇪 873 99 51ms 3 Jan 2022 701st Alex-x90 🇺🇸 873 99 53ms 20 Sep 2022 701st Steffan153 🇫🇮 873 99 51ms 28 Jan 2023 701st ovs-code 🇩🇪 873 99 48ms 3 Jun 2024 701st roupiq 🇵🇱 873 99 54ms 8 Jun 2024 701st Herbert00709 🇵🇱 873 99 53ms 8 Jun 2024 701st sean-niemann 🇺🇸 873 99 48ms 6 Aug 2024 708th edsrzf 🇳🇿 872 95 1ms 5 Mar 2025 709th DialFrost 🇸🇬 871 148 550ms 12 Jan 2025 709th emgordon154 871 148 496ms 12 Jan 2025 709th Shanethegamer 🇺🇸 871 148 456ms 13 Jan 2025 709th KatieLG 🇬🇧 871 148 500ms 13 Jan 2025 709th HumanoidCPU 871 148 501ms 13 Jan 2025 709th dokutan 871 148 479ms 13 Jan 2025 709th GolfingSuccess 🇬🇷 871 148 481ms 18 Jan 2025 709th ovs-code 🇩🇪 871 148 489ms 24 Jan 2025 709th CaedenHarper 🇨🇦 871 148 501ms 25 Jan 2025 709th MeWhenI 🇻🇦 871 148 477ms 9 Feb 2025 709th pardouin 🇫🇷 871 148 522ms 25 Feb 2025 709th albanian-laundromat 871 148 524ms 25 Jul 2025 721st AdrienHache 🇫🇷 870 82 2ms 7 Jan 2024 721st pardouin 🇫🇷 870 82 2ms 8 Oct 2024 721st LostSyntax21 🇬🇧 870 82 2ms 8 Jan 2025 721st TeodorDyakov 🇧🇬 870 82 2ms 5 Mar 2025 725th msbranicky 870 117 260ms 8 Sep 2023 726th primo-ppcg 🇹🇭 869 69 9ms 27 Nov 2019 726th jakzo 869 69 12ms 5 Sep 2021 726th Shanethegamer 🇺🇸 869 69 10ms 25 Apr 2023 729th dcgjb 868 57 206ms 6 May 2024 730th ArmaanAS 868 70 9ms 8 Mar 2021 730th Hebelub 868 70 10ms 5 Jan 2024 730th Dataen 868 70 10ms 5 Jan 2024 730th dokutan 868 70 10ms 23 Jan 2024 734th duckyluuk 🇳🇱 867 70 2,797ms 26 Oct 2024 735th snoozingnewt 🇺🇸 867 89 375ms 27 hours ago 736th lynn 866 34 41ms 13 Apr 2021 736th jared-hughes 866 34 34ms 30 Sep 2021 736th Natanaelel 🇸🇪 866 34 43ms 28 Nov 2023 736th primo-ppcg 🇹🇭 866 34 37ms 24 Mar 2025 736th SirBogman 🇺🇸 866 34 36ms 8 Jul 2025 736th fuzzylojik-golf 🇺🇸 866 34 35ms 9 Sep 2025 742nd MeWhenI 🇻🇦 866 61 3ms 23 May 2023 743rd DialFrost 🇸🇬 866 73 1,398ms 12 Oct 2023 744th Steffan153 🇫🇮 866 81 2ms 3 Feb 2023 744th GrayJoKing 🇦🇺 866 81 3ms 12 Feb 2023 746th ovs-code 🇩🇪 866 95 28ms 10 Jan 2023 747th GrayJoKing 🇦🇺 865 61 401ms 15 Jan 2024 747th namelessiw 865 61 337ms 5 Mar 2024 747th neel11235813 865 61 392ms 10 Mar 2024 747th duckyluuk 🇳🇱 865 61 476ms 14 Jul 2024 First Prev 676–750 of 3,124 Next Last