The Tower of Hanoi hole will go live in approximately 30 hours. Why not try and solve it ahead of time?
Happy Numbers in all languages in chars. 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 Chars Time Submitted 375th Steffan153 🇫🇮 860 49 116ms 25 Apr 2023 377th primo-ppcg 🇹🇭 860 59 2ms 15 Feb 2020 377th DaDerpDuck 860 59 1ms 26 Jan 2021 377th Waffle3z 860 59 2ms 26 Jan 2021 377th sisyphus-ppcg 🇦🇺 860 59 2ms 8 Jun 2021 377th Steffan153 🇫🇮 860 59 1ms 25 Apr 2023 382nd primo-ppcg 🇹🇭 859 48 99ms 25 Dec 2020 382nd sisyphus-ppcg 🇦🇺 859 48 99ms 8 Jun 2021 384th btnlq 856 45 3ms 22 Oct 2023 385th HPWiz 🇳🇿 854 32 51ms 17 Aug 2023 386th emgordon154 853 51 525ms 13 Apr 2025 386th CaedenHarper 🇨🇦 853 51 419ms 29 Jul 2025 388th DaCuteRaccoon 853 65 3ms 30 Nov 2022 388th snoozingnewt 🇺🇸 853 65 4ms 1 Sep 2024 388th LostSyntax21 🇬🇧 853 65 2ms 8 Jan 2025 391st stefangimmillaro 849 64 104ms 15 Jul 2023 392nd sisyphus-ppcg 🇦🇺 849 77 2ms 3 Feb 2023 393rd emplv 🇱🇻 849 100 266ms 2 Sep 2021 393rd Shanethegamer 🇺🇸 849 100 260ms 29 Mar 2023 393rd Yewzir 🇧🇪 849 100 260ms 26 Oct 2023 393rd emgordon154 849 100 261ms 17 Jan 2025 393rd error256 849 100 254ms 15 Feb 2025 393rd plcc0 849 100 268ms 21 Mar 2025 393rd fuzzylojik-golf 🇺🇸 849 100 261ms 3 Sep 2025 400th sean-niemann 🇺🇸 848 27 44ms 22 Jul 2022 400th lynn 848 27 50ms 22 Jul 2022 400th MeWhenI 🇻🇦 848 27 45ms 23 Jul 2022 400th sisyphus-ppcg 🇦🇺 848 27 41ms 24 Jul 2022 400th jared-hughes 848 27 41ms 29 Jul 2022 400th DaCuteRaccoon 848 27 43ms 30 Nov 2022 400th AlephSquirrel 848 27 46ms 30 Dec 2022 400th DialFrost 🇸🇬 848 27 42ms 28 Jan 2023 400th CornerMercury 🇬🇧 848 27 42ms 24 Aug 2023 400th ovs-code 🇩🇪 848 27 162ms 2 Feb 2024 400th snoozingnewt 🇺🇸 848 27 44ms 1 Sep 2024 400th pardouin 🇫🇷 848 27 48ms 21 Sep 2024 400th LostSyntax21 🇬🇧 848 27 56ms 8 Jan 2025 400th edsrzf 🇳🇿 848 27 60ms 9 Mar 2025 400th CaedenHarper 🇨🇦 848 27 47ms 14 Jul 2025 400th fuzzylojik-golf 🇺🇸 848 27 45ms 9 Sep 2025 416th pardouin 🇫🇷 846 26 2ms 14 Apr 2025 417th stefangimmillaro 842 50 118ms 22 Aug 2023 418th MeWhenI 🇻🇦 841 49 97ms 22 Aug 2023 419th Irratix 🇳🇱 841 56 10ms 30 Apr 2022 419th GrayJoKing 🇦🇺 841 56 10ms 7 Jul 2022 419th Alex-x90 🇺🇸 841 56 9ms 28 Jan 2023 419th inventshah 841 56 13ms 28 Jan 2023 419th neel11235813 841 56 10ms 7 Feb 2023 419th roupiq 🇵🇱 841 56 10ms 18 Feb 2024 419th Seek64 🇩🇪 841 56 10ms 15 Jul 2024 419th emgordon154 841 56 9ms 6 Sep 2024 419th DialFrost 🇸🇬 841 56 11ms 26 Dec 2024 419th fuzzylojik-golf 🇺🇸 841 56 11ms 9 Jun 2025 419th duckyluuk 🇳🇱 841 56 9ms 5 Jul 2025 419th BREMAUCY 🇫🇷 841 56 9ms 26 Jul 2025 419th snoozingnewt 🇺🇸 841 56 10ms 23 hours ago 432nd jared-hughes 840 101 255ms 27 Feb 2024 432nd edsrzf 🇳🇿 840 101 260ms 26 Oct 2024 432nd keelimeguy 🇺🇸 840 101 253ms 28 Apr 2025 432nd CaedenHarper 🇨🇦 840 101 232ms 8 days ago 436th mcreenan 839 37 182ms 22 Apr 2018 436th ovs-code 🇩🇪 839 37 143ms 31 Dec 2023 438th MeWhenI 🇻🇦 838 74 471ms 5 Mar 2022 439th GrayJoKing 🇦🇺 837 42 69ms 13 Sep 2023 439th Lydxn 🇨🇦 837 42 69ms 13 Sep 2023 439th Steffan153 🇫🇮 837 42 70ms 15 Sep 2023 439th primo-ppcg 🇹🇭 837 42 75ms 16 Sep 2023 439th MeWhenI 🇻🇦 837 42 69ms 2 Nov 2023 439th Yewzir 🇧🇪 837 42 81ms 7 Mar 2024 439th pardouin 🇫🇷 837 42 71ms 24 Aug 2024 439th edsrzf 🇳🇿 837 42 74ms 17 Jan 2025 439th sean-niemann 🇺🇸 837 42 81ms 7 Apr 2025 439th DialFrost 🇸🇬 837 42 69ms 7 Apr 2025 439th fuzzylojik-golf 🇺🇸 837 42 74ms 17 Sep 2025 450th the-zammers 836 69 131ms 2 Dec 2024 First Prev 376–450 of 3,108 Next Last