The Tower of Hanoi hole will go live in approximately 70 mins. 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 364th albanian-laundromat 921 66 1,231ms 19 days ago 377th HPWiz 🇳🇿 920 32 51ms 17 Aug 2023 378th sisyphus-ppcg 🇦🇺 920 64 65ms 12 Dec 2022 378th Lydxn 🇨🇦 920 64 67ms 13 Dec 2022 378th Steffan153 🇫🇮 920 64 64ms 28 Jan 2023 378th ovs-code 🇩🇪 920 64 69ms 21 Apr 2024 378th DialFrost 🇸🇬 920 64 65ms 20 Feb 2025 378th sean-niemann 🇺🇸 920 64 68ms 20 Feb 2025 378th snoozingnewt 🇺🇸 920 64 64ms 46 hours ago 385th inventshah 919 66 2,116ms 24 Oct 2024 385th btnlq 919 66 2,783ms 26 Oct 2024 385th stefangimmillaro 919 66 2,879ms 29 Oct 2024 385th pardouin 🇫🇷 919 66 2,836ms 31 Oct 2024 385th JayXon 🇺🇸 919 66 2,836ms 7 Nov 2024 385th emgordon154 919 66 2,755ms 20 Nov 2024 391st Lydxn 🇨🇦 919 72 2ms 10 Sep 2022 391st GrayJoKing 🇦🇺 919 72 2ms 10 Sep 2022 391st JayXon 🇺🇸 919 72 2ms 10 Sep 2022 391st btnlq 919 72 2ms 11 Sep 2022 391st Steffan153 🇫🇮 919 72 3ms 19 Aug 2024 396th bforte 919 74 144ms 9 Dec 2018 396th annaproxy 919 74 152ms 12 Jan 2022 396th rak1507 🇬🇧 919 74 157ms 23 Feb 2022 396th snoozingnewt 🇺🇸 919 74 150ms 1 Sep 2024 396th Natanaelel 🇸🇪 919 74 157ms 31 May 2025 401st primo-ppcg 🇹🇭 918 41 144ms 6 Oct 2020 401st Natanaelel 🇸🇪 918 41 134ms 7 Oct 2021 401st sisyphus-ppcg 🇦🇺 918 41 143ms 31 Jan 2023 404th Steffan153 🇫🇮 918 64 5ms 11 Dec 2023 404th Yewzir 🇧🇪 918 64 5ms 14 Dec 2023 404th Lydxn 🇨🇦 918 64 5ms 20 Dec 2023 404th dokutan 918 64 5ms 19 May 2024 404th emgordon154 918 64 5ms 5 Dec 2024 404th edsrzf 🇳🇿 918 64 5ms 21 Jan 2025 404th sean-niemann 🇺🇸 918 64 5ms 19 Apr 2025 404th kg583 🇺🇸 918 64 5ms 30 Jul 2025 404th snoozingnewt 🇺🇸 918 64 7ms 7 mins ago 413th primo-ppcg 🇹🇭 918 80 309ms 21 Nov 2021 413th prplz 🇦🇺 918 80 309ms 21 Nov 2021 413th annaproxy 918 80 321ms 5 May 2022 413th tomtheisen 🇺🇸 918 80 335ms 17 Jan 2023 413th Steffan153 🇫🇮 918 80 343ms 28 Jan 2023 413th AdrienHache 🇫🇷 918 80 349ms 30 May 2023 413th MeWhenI 🇻🇦 918 80 336ms 26 Jul 2023 413th DialFrost 🇸🇬 918 80 342ms 26 Dec 2024 413th sean-niemann 🇺🇸 918 80 330ms 9 Jan 2025 413th Yax42 🇫🇷 918 80 321ms 15 Aug 2025 423rd Lydxn 🇨🇦 917 63 3ms 16 Jul 2023 423rd Steffan153 🇫🇮 917 63 131ms 22 Aug 2024 423rd sean-niemann 🇺🇸 917 63 136ms 22 Aug 2024 423rd JayXon 🇺🇸 917 63 133ms 23 Aug 2024 423rd lukegustafson 🇺🇸 917 63 133ms 12 Sep 2024 423rd emplv 🇱🇻 917 63 133ms 17 Jul 2025 429th lifthrasiir 🇰🇷 917 77 9ms 11 Dec 2024 429th jared-hughes 917 77 7ms 15 Dec 2024 431st bendiscz 917 111 266ms 20 Apr 2020 431st emplv 🇱🇻 917 111 255ms 31 Aug 2021 431st jared-hughes 917 111 255ms 27 Feb 2024 431st edsrzf 🇳🇿 917 111 260ms 26 Oct 2024 431st keelimeguy 🇺🇸 917 111 253ms 28 Apr 2025 431st CaedenHarper 🇨🇦 917 111 232ms 10 days ago 437th lynn 916 54 190ms 25 May 2022 438th GrayJoKing 🇦🇺 916 69 4ms 29 Apr 2021 438th xsot 🇸🇬 916 69 4ms 16 Jun 2024 440th AlephSquirrel 916 83 6ms 21 Jan 2023 440th edsrzf 🇳🇿 916 83 5ms 11 Apr 2025 440th kg583 🇺🇸 916 83 6ms 3 May 2025 443rd btnlq 915 61 2ms 5 Nov 2022 444th Lydxn 🇨🇦 915 70 39ms 21 Jun 2022 445th Lydxn 🇨🇦 915 76 105ms 14 Oct 2022 445th sean-niemann 🇺🇸 915 76 102ms 14 Oct 2022 445th JayXon 🇺🇸 915 76 104ms 14 Oct 2022 445th MeWhenI 🇻🇦 915 76 106ms 14 Oct 2022 445th Steffan153 🇫🇮 915 76 101ms 14 Oct 2022 445th stefangimmillaro 915 76 103ms 14 Oct 2022 First Prev 376–450 of 3,126 Next Last