The Continued Fractions hole will go live in approximately 30 hours. Why not try and solve it ahead of time?
Collatz 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 Calendar 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 Multitap Input 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 Tower of Hanoi 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 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 Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 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 APL ArkScript Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> ALGOL 68 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 APL ArkScript Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily 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 Calendar 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 Multitap Input 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 Tower of Hanoi 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 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 Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 801st TFeld00 🇩🇰 871 71 25ms 17 May 2022 801st DialFrost 🇸🇬 871 71 25ms 15 Nov 2022 801st StefanHabel 🇨🇦 871 71 19ms 29 Nov 2022 801st nstearns96 🇬🇧 871 71 21ms 11 Jan 2023 801st hallvabo 🇳🇴 871 71 19ms 7 Feb 2023 801st anter69 🇭🇺 871 71 18ms 21 May 2024 801st rucin93 🇵🇱 871 71 17ms 10 Jul 2024 801st lelbal 871 71 20ms 26 Aug 2025 801st HETHAT 🇩🇿 871 71 23ms 23 Sep 2025 801st 09cf 871 71 18ms 18 Nov 2025 801st Languag3 871 71 25ms 5 Dec 2025 801st CommandLeo 🇮🇹 871 71 23ms 8 Jan 2026 801st Flekay 🇩🇪 871 71 17ms 14 days ago 801st snoozingnewt 🇨🇦 871 71 18ms 14 days ago 801st JOrE20 871 71 16ms 2 days ago 816th Shanethegamer 🇺🇸 871 98 127ms 15 Apr 2025 816th GolfingSuccess 🇬🇷 871 98 104ms 28 Nov 2025 816th DialFrost 🇸🇬 871 98 102ms 1 Dec 2025 819th ovs-code 🇩🇪 871 133 42ms 8 Jul 2024 820th emgordon154 870 160 1,606ms 24 Dec 2025 820th DialFrost 🇸🇬 870 160 1,669ms 17 Jan 2026 822nd Steffan153 🇫🇮 869 82 1,388ms 23 Feb 2023 823rd 123mjb 869 96 366ms 20 Nov 2025 823rd noescareno 869 96 366ms 21 Nov 2025 825th Frowny 868 38 40ms 5 May 2022 825th stackofbears 868 38 42ms 14 Mar 2025 827th steffan-polygolf 868 73 87ms 23 Feb 2023 827th MWI-polygolf 868 73 83ms 6 Dec 2023 827th HumanoidCPU 868 73 81ms 7 May 2024 830th nwellnhof 🇩🇪 868 111 285ms 4 May 2022 830th emplv 🇱🇻 868 111 279ms 5 May 2022 830th Shanethegamer 🇺🇸 868 111 287ms 21 Nov 2023 833rd pardouin 🇫🇷 867 61 130ms 7 Aug 2024 834th MeWhenI 🇻🇦 867 92 467ms 10 Oct 2022 834th Betuaredead 867 92 480ms 5 Jan 2023 834th Yax42 🇫🇷 867 92 470ms 4 Oct 2025 837th shellbertt 🇨🇦 867 98 62ms 9 May 2022 837th iakolzin 867 98 65ms 26 May 2022 837th Betuaredead 867 98 65ms 5 Jan 2023 837th oceko 867 98 62ms 19 Feb 2024 837th cuzdav 867 98 58ms 4 May 2025 837th timhaj 🇸🇮 867 98 56ms 12 Sep 2025 837th Yax42 🇫🇷 867 98 58ms 4 Oct 2025 844th bac0id 866 90 374ms 26 Sep 2023 844th deadp4nda 🇩🇪 866 90 390ms 26 Apr 2024 844th 123mjb 866 90 349ms 23 Jun 2025 844th michelebastione 🇮🇹 866 90 407ms 24 Aug 2025 844th razvandmtr 🇷🇴 866 90 403ms 6 Nov 2025 849th TylerBloom 866 96 119ms 22 Mar 2024 850th 5quiwyrm 865 52 293ms 4 Sep 2022 850th MeWhenI 🇻🇦 865 52 301ms 28 Jan 2023 850th Feniske 🇫🇷 865 52 289ms 7 Nov 2023 850th dcgjb 865 52 277ms 29 Jan 2024 850th JPRuskin 🇬🇧 865 52 284ms 7 Apr 2025 850th IISResetMe 865 52 309ms 7 Apr 2025 850th Ripick 865 52 303ms 1 Jun 2025 857th Andriamanitra 🇫🇮 865 67 144ms 26 Apr 2023 858th MeWhenI 🇻🇦 865 81 8ms 23 May 2023 859th typeswitch-dev 🇵🇹 864 75 5ms 22 Jul 2023 860th dokutan 864 79 10ms 27 Apr 2024 860th SwordF-Official 🇺🇸 864 79 10ms 26 days ago 862nd ovs-code 🇩🇪 864 161 1,719ms 14 Sep 2025 862nd Yewzir 🇧🇪 864 161 1,887ms 14 Nov 2025 864th HPWiz 🇳🇿 863 50 265ms 4 May 2022 864th JayXon 🇺🇸 863 50 250ms 5 May 2022 864th Steffan153 🇫🇮 863 50 256ms 10 Dec 2022 864th ovs-code 🇩🇪 863 50 403ms 24 Oct 2023 864th sean-niemann 🇺🇸 863 50 268ms 12 Jul 2024 869th Setvizan 863 62 11ms 12 Jan 2023 869th GreenBeansAgainstVeganism 863 62 11ms 13 Jan 2023 869th arctouch-cristiannevianna 863 62 14ms 3 Apr 2023 869th Corxldyphik 863 62 11ms 11 Apr 2023 869th Blockyheadman 863 62 12ms 1 Nov 2023 869th ollyspooner 863 62 10ms 22 Nov 2023 869th itserasmus 863 62 11ms 25 Jan 2024 869th Jacob385 863 62 11ms 13 Mar 2024 869th junkondo-jp 863 62 10ms 30 Jun 2024 869th ShiraJoseph 🇺🇸 863 62 14ms 1 Mar 2025 869th tomh1012 863 62 12ms 3 Dec 2025 880th MeWhenI 🇻🇦 863 145 1,413ms 28 Mar 2025 First Prev 801–880 of 3,604 Next Last