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 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 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 Hilbert Curve 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 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 Groovy Harbour Hare Haxe Hush Hy iogii Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua 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 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 Groovy Harbour Hare Haxe Hush Hy iogii Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua 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 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 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 Hilbert Curve 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 784th JunkIce 888 75 5 Mar 2025 784th jiji7879 888 75 15 days ago 784th faragocsaba 888 75 13 days ago 784th bknower 888 75 5 days ago 830th c0d3-4-F00d 🇩🇪 888 132 6 May 2022 830th madeforlosers 888 132 26 Oct 2023 830th Blockyheadman 888 132 1 Nov 2023 830th SpiritAxolotl 🇺🇸 888 132 20 Mar 2024 834th canissimia 🇦🇶 888 204 25 Nov 2023 835th MeWhenI 🇻🇦 887 53 1 Jun 2022 835th stefangimmillaro 887 53 2 Oct 2022 835th Haksell 🇦🇶 887 53 22 Feb 2023 838th ovs-code 🇩🇪 887 151 9 Sep 2023 838th Yewzir 🇧🇪 887 151 21 May 2024 840th GolfingSuccess 🇬🇷 885 71 5 May 2022 840th emplv 🇱🇻 885 71 5 May 2022 840th JayXon 🇺🇸 885 71 7 May 2022 840th nwellnhof 🇩🇪 885 71 5 Jun 2022 840th stefangimmillaro 885 71 2 Jun 2023 840th 09cf 885 71 4 Oct 2023 840th kkoenig 885 71 21 Dec 2023 840th sean-niemann 🇺🇸 885 71 10 Jul 2024 840th masinag 🇮🇹 885 71 6 Oct 2024 840th KasperKivimaeki 🇫🇮 885 71 27 Mar 2025 850th m-tkach 🇺🇦 885 117 7 May 2022 850th Lydxn 🇨🇦 885 117 7 May 2022 852nd Shanethegamer 🇺🇸 884 70 12 Dec 2022 852nd Alessandro-Balconi 🇮🇹 884 70 26 Dec 2022 854th SiestaGuru 884 88 9 Jan 2023 854th rifatx 884 88 5 Jul 2024 856th janbehrens 🇩🇪 884 90 21 Apr 2023 856th Yewzir 🇧🇪 884 90 22 Apr 2023 856th DialFrost 🇸🇬 884 90 6 Nov 2023 856th Ripick 884 90 27 Nov 2024 860th m-tkach 🇺🇦 884 112 13 days ago 861st jared-hughes 884 130 15 Dec 2024 862nd m-tkach 🇺🇦 883 59 21 Jan 2024 862nd GolfingSuccess 🇬🇷 883 59 20 Jan 2025 864th nipzu 883 94 17 May 2022 864th Natanaelel 🇸🇪 883 94 17 Jun 2022 864th nkoppel 883 94 19 Oct 2022 864th ovs-code 🇩🇪 883 94 21 Jun 2023 864th mousetail 🇳🇱 883 94 12 Jan 2024 869th Shanethegamer 🇺🇸 882 51 15 May 2023 870th steffan-polygolf 882 74 14 Feb 2024 871st primo-ppcg 🇹🇭 882 85 14 Jan 2025 871st MeWhenI 🇻🇦 882 85 21 Apr 2025 873rd Irratix 🇳🇱 882 96 4 May 2022 873rd MeWhenI 🇻🇦 882 96 1 Jun 2022 873rd janbehrens 🇩🇪 882 96 21 Apr 2023 873rd Shanethegamer 🇺🇸 882 96 15 May 2023 873rd Yewzir 🇧🇪 882 96 11 Nov 2023 873rd MateuszPietrzak 🇵🇱 882 96 18 Nov 2023 873rd kkoenig 882 96 21 Dec 2023 873rd BlankSpruce 882 96 20 Aug 2024 873rd fuzzylojik-golf 🇺🇸 882 96 21 days ago 882nd GrayJoKing 🇦🇺 881 60 24 Oct 2024 883rd ovs-code 🇩🇪 881 73 22 Jul 2023 884th ravnskjaer 🇩🇰 881 133 11 Sep 2024 885th Shanethegamer 🇺🇸 881 152 9 Sep 2023 885th emgordon154 881 152 2 Oct 2024 885th DialFrost 🇸🇬 881 152 27 Oct 2024 888th Shanethegamer 🇺🇸 879 142 27 Mar 2025 888th DialFrost 🇸🇬 879 142 28 Mar 2025 888th emgordon154 879 142 10 Apr 2025 891st dokutan 878 62 28 Apr 2025 892nd Shanethegamer 🇺🇸 878 73 8 May 2025 892nd DialFrost 🇸🇬 878 73 3 Jun 2025 892nd edsrzf 🇳🇿 878 73 35 hours ago 895th Grrisly 878 74 25 Mar 2024 896th GrayJoKing 🇦🇺 878 84 19 Jun 2022 896th primo-ppcg 🇹🇭 878 84 29 Jun 2022 898th Shanethegamer 🇺🇸 877 66 4 May 2022 898th scpchicken 🇵🇼 877 66 5 May 2022 898th sisyphus-ppcg 🇦🇺 877 66 6 May 2022 Prev 826–900 of 3,171 Next