Collatz in all languages in bytes. Cheevos Holes Recent Holes Langs Medals Misc 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 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 United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Apéry’s Constant Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir 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 Erlang Fennel Harbour Hare Haxe Hush Hy iogii Knight 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 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 Erlang Fennel Harbour Hare Haxe Hush Hy iogii Knight 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 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 United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Apéry’s Constant Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial # Golfer Points Bytes Time 818th destofr 888 75 25 Aug 2022 818th vishwathg 888 75 10 Oct 2022 818th nkoppel 888 75 19 Oct 2022 818th AZ9tumas 888 75 23 Oct 2022 818th EthanGrant1 888 75 7 Nov 2022 818th Omega65536 🇩🇪 888 75 24 Nov 2022 818th b10011 🇫🇮 888 75 3 Jan 2023 818th 4ndyJ 🇬🇧 888 75 3 Jan 2023 818th randolchance 888 75 8 Jan 2023 818th LeeCamp 888 75 12 Jan 2023 818th hellwue 888 75 15 Feb 2023 818th nandanjp 888 75 29 Mar 2023 818th kaptsanovb 888 75 20 Apr 2023 818th galloj 🇨🇿 888 75 20 May 2023 818th jhu04 888 75 23 Jun 2023 818th HelloYuiYui 888 75 1 Nov 2023 818th tobyLovick 888 75 10 Nov 2023 818th VictorStenvers 🇳🇱 888 75 13 Nov 2023 818th RZ781 888 75 19 Nov 2023 818th mikehanus 888 75 21 Nov 2023 818th 1231234md5 🇨🇳 888 75 14 Dec 2023 818th Hebelub 888 75 6 Jan 2024 818th minhtrancccp 888 75 11 Jan 2024 818th 123mjb 888 75 25 Jan 2024 818th jbjd 888 75 25 Feb 2024 818th gabe-gallegos 888 75 2 May 2024 818th kejcao 🇨🇦 888 75 11 May 2024 818th f-tucker 888 75 24 May 2024 818th Florian-Mt 888 75 22 Jul 2024 818th codingisgreatbutiamnot 888 75 9 Aug 2024 818th Terobero 888 75 23 Aug 2024 818th abhishekg999 888 75 17 Sep 2024 818th RedzGoose 🇦🇺 888 75 7 Oct 2024 818th Clay-Goodling 888 75 8 Oct 2024 818th JunkIce 888 75 5 Mar 2025 818th jiji7879 888 75 20 Jun 2025 818th faragocsaba 888 75 22 Jun 2025 818th bknower 888 75 30 Jun 2025 818th clayboll99 888 75 14 Jul 2025 818th edsrzf 🇳🇿 888 75 30 Jul 2025 866th canissimia 🇦🇶 888 204 25 Nov 2023 867th MeWhenI 🇻🇦 887 53 1 Jun 2022 867th stefangimmillaro 887 53 2 Oct 2022 867th Haksell 🇦🇶 887 53 22 Feb 2023 870th primo-ppcg 🇹🇭 887 85 14 Jan 2025 870th MeWhenI 🇻🇦 887 85 21 Apr 2025 872nd m-tkach 🇺🇦 887 117 7 May 2022 872nd Lydxn 🇨🇦 887 117 7 May 2022 874th GolfingSuccess 🇬🇷 886 57 5 days ago 874th CaedenHarper 🇨🇦 886 57 19 hours ago 876th m-tkach 🇺🇦 886 112 22 Jun 2025 877th jared-hughes 886 130 15 Dec 2024 878th Shanethegamer 🇺🇸 885 70 12 Dec 2022 878th Alessandro-Balconi 🇮🇹 885 70 26 Dec 2022 880th GolfingSuccess 🇬🇷 885 71 5 May 2022 880th emplv 🇱🇻 885 71 5 May 2022 880th JayXon 🇺🇸 885 71 7 May 2022 880th nwellnhof 🇩🇪 885 71 5 Jun 2022 880th stefangimmillaro 885 71 2 Jun 2023 880th 09cf 885 71 4 Oct 2023 880th kkoenig 885 71 21 Dec 2023 880th sean-niemann 🇺🇸 885 71 10 Jul 2024 880th masinag 🇮🇹 885 71 6 Oct 2024 889th SiestaGuru 884 88 9 Jan 2023 889th rifatx 884 88 5 Jul 2024 891st janbehrens 🇩🇪 884 90 21 Apr 2023 891st Yewzir 🇧🇪 884 90 22 Apr 2023 891st DialFrost 🇸🇬 884 90 6 Nov 2023 891st Ripick 884 90 27 Nov 2024 895th nipzu 884 94 17 May 2022 895th Natanaelel 🇸🇪 884 94 17 Jun 2022 895th nkoppel 884 94 19 Oct 2022 895th ovs-code 🇩🇪 884 94 21 Jun 2023 895th mousetail 🇳🇱 884 94 12 Jan 2024 900th Shanethegamer 🇺🇸 884 152 9 Sep 2023 Prev 826–900 of 3,297 Next
