The Tower of Hanoi hole will go live in approximately 2 days. 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 150th MeWhenI 🇻🇦 945 42 2ms 13 Mar 2025 152nd Bubbler-4 944 72 163ms 20 Feb 2019 152nd primo-ppcg 🇹🇭 944 72 159ms 9 Oct 2020 152nd HPWiz 🇳🇿 944 72 178ms 15 Apr 2021 152nd lynn 944 72 181ms 15 Apr 2021 152nd JayXon 🇺🇸 944 72 170ms 28 Jun 2021 152nd xnor-gate 944 72 156ms 22 Dec 2021 152nd ovs-code 🇩🇪 944 72 164ms 4 Jul 2022 152nd btnlq 944 72 194ms 15 Oct 2023 152nd tobeannouncd 944 72 177ms 11 Jan 2024 161st janlelis 943 50 61ms 20 Sep 2021 162nd kg583 🇺🇸 943 56 397ms 2 Mar 2024 162nd JayXon 🇺🇸 943 56 360ms 2 Mar 2024 162nd Steffan153 🇫🇮 943 56 371ms 3 Mar 2024 162nd Lydxn 🇨🇦 943 56 430ms 3 Mar 2024 162nd pardouin 🇫🇷 943 56 411ms 25 Jun 2024 162nd emgordon154 943 56 379ms 22 Sep 2024 162nd sean-niemann 🇺🇸 943 56 463ms 20 Feb 2025 169th sisyphus-ppcg 🇦🇺 943 67 4ms 2 Jul 2023 169th Lydxn 🇨🇦 943 67 4ms 2 Jul 2023 169th primo-ppcg 🇹🇭 943 67 4ms 3 Jul 2023 169th Steffan153 🇫🇮 943 67 4ms 8 Aug 2024 169th sean-niemann 🇺🇸 943 67 4ms 9 Jan 2025 169th targrik 943 67 4ms 17 Jul 2025 175th saito-ta 🇯🇵 942 53 31ms 29 Jul 2024 176th nwellnhof 🇩🇪 942 108 259ms 17 Oct 2020 176th JayXon 🇺🇸 942 108 261ms 9 Jul 2021 176th Lydxn 🇨🇦 942 108 261ms 9 Jul 2021 176th MeWhenI 🇻🇦 942 108 253ms 4 Nov 2021 176th sisyphus-ppcg 🇦🇺 942 108 262ms 16 Mar 2022 176th stefangimmillaro 942 108 256ms 12 Jun 2023 182nd nwellnhof 🇩🇪 941 40 317ms 4 Oct 2020 183rd GrayJoKing 🇦🇺 941 53 1,018ms 13 Sep 2021 183rd Lydxn 🇨🇦 941 53 977ms 13 Sep 2021 183rd JayXon 🇺🇸 941 53 1,032ms 20 Sep 2021 183rd primo-ppcg 🇹🇭 941 53 1,005ms 22 Sep 2021 183rd sisyphus-ppcg 🇦🇺 941 53 819ms 3 Feb 2022 183rd Steffan153 🇫🇮 941 53 953ms 27 Mar 2023 183rd stefangimmillaro 941 53 899ms 14 Apr 2023 183rd pardouin 🇫🇷 941 53 860ms 13 Apr 2025 183rd sean-niemann 🇺🇸 941 53 968ms 13 Apr 2025 192nd JayXon 🇺🇸 941 78 323ms 21 Nov 2021 192nd Lydxn 🇨🇦 941 78 317ms 21 Nov 2021 192nd btnlq 941 78 327ms 10 Mar 2023 192nd stefangimmillaro 941 78 312ms 15 Jul 2023 192nd namelessiw 941 78 323ms 8 Aug 2024 197th Bubbler-4 940 49 69ms 13 Sep 2023 197th GrayJoKing 🇦🇺 940 49 89ms 13 Sep 2023 197th Lydxn 🇨🇦 940 49 70ms 13 Sep 2023 197th ovs-code 🇩🇪 940 49 79ms 13 Sep 2023 197th Steffan153 🇫🇮 940 49 69ms 15 Sep 2023 197th primo-ppcg 🇹🇭 940 49 73ms 16 Sep 2023 197th Kacarott 🇦🇺 940 49 68ms 24 Nov 2023 197th error256 940 49 70ms 13 May 2024 197th pardouin 🇫🇷 940 49 76ms 24 Aug 2024 197th sean-niemann 🇺🇸 940 49 70ms 7 Apr 2025 197th DialFrost 🇸🇬 940 49 77ms 8 Apr 2025 208th JayXon 🇺🇸 939 76 8ms 26 Nov 2021 209th sean-niemann 🇺🇸 936 89 329ms 24 Sep 2025 209th JayXon 🇺🇸 936 89 335ms 24 Sep 2025 209th nwellnhof 🇩🇪 936 89 338ms 25 Sep 2025 209th stefangimmillaro 936 89 337ms 6 Oct 2025 209th MeWhenI 🇻🇦 936 89 335ms 21 days ago 209th DialFrost 🇸🇬 936 89 334ms 14 days ago 215th primo-ppcg 🇹🇭 934 53 207ms 20 Oct 2020 215th prplz 🇦🇺 934 53 217ms 20 Oct 2020 215th btnlq 934 53 215ms 13 Dec 2020 215th JayXon 🇺🇸 934 53 214ms 28 Jun 2021 215th nwellnhof 🇩🇪 934 53 203ms 27 Dec 2021 215th sisyphus-ppcg 🇦🇺 934 53 194ms 15 Aug 2022 215th stefangimmillaro 934 53 220ms 22 Aug 2022 215th MeWhenI 🇻🇦 934 53 220ms 29 Jan 2023 215th Steffan153 🇫🇮 934 53 221ms 29 Jan 2023 215th SirBogman 🇺🇸 934 53 184ms 8 Jan 2024 215th DialFrost 🇸🇬 934 53 194ms 26 Dec 2024 First Prev 151–225 of 3,116 Next Last