Collatz 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 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 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 Multitap Input 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 ><> 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 ArkScript 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 ArkScript 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 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 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 Multitap Input 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 Chars Time Submitted 879th Walter225 846 100 58ms 25 Jul 2023 882nd Natanaelel 🇸🇪 845 57 409ms 17 Jan 2024 882nd Kacarott 🇦🇺 845 57 421ms 10 Sep 2024 882nd albanian-laundromat 845 57 430ms 7 Oct 2025 885th retrohun 845 64 6ms 6 Nov 2022 885th Re-Adventures 🇮🇳 845 64 5ms 7 Nov 2022 885th stellartux 845 64 5ms 26 Dec 2023 885th bac0id 845 64 5ms 29 Jun 2024 885th snoozingnewt 🇨🇦 845 64 5ms 1 Sep 2024 885th albanian-laundromat 845 64 5ms 22 Sep 2025 891st frosster 845 80 10ms 25 Dec 2025 892nd lynn 845 96 29ms 11 Jul 2023 893rd Shanethegamer 🇺🇸 845 98 121ms 26 Oct 2022 893rd emgordon154 845 98 119ms 18 Feb 2025 895th janAkali 🇷🇺 844 77 123ms 12 Feb 2025 896th bschorno 844 92 395ms 12 Oct 2022 896th ChrisTheisen 844 92 371ms 14 Dec 2022 896th kellantech 844 92 408ms 4 Jul 2023 896th Mezzofloat 844 92 405ms 26 Aug 2023 896th Maximizer02 844 92 419ms 1 Oct 2023 896th madeforlosers 844 92 452ms 21 Nov 2024 896th ChromaChroma 844 92 407ms 7 Oct 2025 896th snoozingnewt 🇨🇦 844 92 422ms 8 Oct 2025 904th dokutan 844 93 428ms 27 Sep 2025 905th DialFrost 🇸🇬 843 66 93ms 7 Apr 2025 905th KasperKivimaeki 🇫🇮 843 66 8ms 22 Dec 2025 907th krcs 🇵🇱 842 53 281ms 9 May 2022 907th ryanlanegit 842 53 312ms 19 Jun 2022 907th sisyphus-ppcg 🇦🇺 842 53 453ms 15 Aug 2022 910th MeWhenI 🇻🇦 842 71 106ms 13 Dec 2022 911th SirBogman 🇺🇸 842 89 38ms 4 May 2022 912th error256 841 81 68ms 13 Sep 2024 913th CLOStrophobic 🇮🇹 841 89 42ms 14 Feb 2025 914th kmathis22 841 100 31ms 13 Nov 2025 915th raszpi 🇭🇺 840 77 124ms 1 Sep 2023 916th MeWhenI 🇻🇦 840 164 1,639ms 7 Nov 2025 917th eshilo-draper 839 75 83ms 6 Sep 2022 917th kmathis22 839 75 79ms 5 Sep 2025 919th sean-niemann 🇺🇸 839 76 97ms 8 Oct 2024 920th beardotpdf 839 99 346ms 12 Dec 2025 921st emplv 🇱🇻 839 124 25ms 31 Oct 2022 922nd Codsilla 🇨🇦 838 51 241ms 1 Jul 2022 923rd frankgraziano 838 66 4ms 20 Apr 2025 924th Andriamanitra 🇫🇮 838 83 12ms 17 Apr 2023 924th Natanaelel 🇸🇪 838 83 12ms 8 Jul 2023 926th ovs-code 🇩🇪 837 85 16ms 11 Dec 2023 927th dokutan 837 88 39ms 9 Jun 2024 928th Steffan153 🇫🇮 837 97 29ms 18 Jan 2023 929th CatsAreFluffy 837 101 53ms 18 Feb 2023 929th annaproxy 837 101 57ms 9 May 2023 929th wojtekmal 837 101 56ms 15 Nov 2023 929th HumanoidCPU 837 101 60ms 6 May 2024 929th eMGeeneer 837 101 406ms 27 Jun 2024 929th bac0id 837 101 57ms 29 Jun 2024 929th michaelmoynihan 837 101 413ms 3 Sep 2025 929th snoozingnewt 🇨🇦 837 101 417ms 6 Oct 2025 937th scpchicken 🇵🇼 836 55 10ms 4 May 2022 937th SirBogman 🇺🇸 836 55 6ms 5 May 2022 937th Shanethegamer 🇺🇸 836 55 6ms 19 May 2023 937th DialFrost 🇸🇬 836 55 10ms 14 Feb 2025 941st SirBogman 🇺🇸 835 36 14ms 5 May 2022 941st Natanaelel 🇸🇪 835 36 87ms 15 Jun 2022 941st Steffan153 🇫🇮 835 36 91ms 18 Jan 2023 941st codereport 🇨🇦 835 36 9ms 1 Jun 2024 941st GolfinK 835 36 9ms 21 Nov 2024 941st lifthrasiir 🇰🇷 835 36 10ms 1 Dec 2024 941st GolfingSuccess 🇬🇷 835 36 11ms 20 Mar 2025 948th ChiefChippy2 835 56 40ms 4 May 2022 948th aksyristos 835 56 39ms 29 Jan 2023 948th anter69 🇭🇺 835 56 38ms 12 Feb 2024 948th 3dm4n 🇫🇮 835 56 36ms 11 Mar 2024 948th lgrandco 835 56 40ms 9 Oct 2024 948th tatzyr 🇯🇵 835 56 43ms 10 Dec 2024 948th D-MOVE 🇵🇭 835 56 42ms 8 Dec 2025 955th inverseLorentz 🇦🇺 835 69 156ms 3 Jun 2024 955th Yewzir 🇧🇪 835 69 75ms 24 Dec 2024 955th CLOStrophobic 🇮🇹 835 69 170ms 28 May 2025 958th steffan-polygolf 835 81 10ms 23 Feb 2023 959th p-vf 🇨🇭 835 93 418ms 24 Jun 2022 959th Smetalo 835 93 401ms 25 Aug 2022 First Prev 881–960 of 3,513 Next Last