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 Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript 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 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 ArkScript 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 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 Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 239th Nickmiste 924 84 364ms 9 Nov 2022 239th postie77 924 84 369ms 19 May 2023 239th ertz1ertz 924 84 377ms 13 Sep 2024 239th Grabnukebomb 924 84 366ms 13 Sep 2024 239th Shanethegamer 🇺🇸 924 84 388ms 9 Apr 2025 239th HumanoidCPU 924 84 390ms 10 Apr 2025 239th annaproxy 924 84 380ms 11 Apr 2025 239th Re-Adventures 🇮🇳 924 84 376ms 15 Apr 2025 239th janbehrens 🇩🇪 924 84 380ms 17 Apr 2025 250th h3ra993huskp 🇯🇵 924 90 425ms 30 Nov 2025 251st ovs-code 🇩🇪 923 60 5ms 9 Oct 2023 251st GrayJoKing 🇦🇺 923 60 4ms 11 Oct 2023 251st Lydxn 🇨🇦 923 60 5ms 11 Oct 2023 251st GolfingSuccess 🇬🇷 923 60 4ms 16 Nov 2023 251st Steffan153 🇫🇮 923 60 5ms 28 Jan 2024 251st JayXon 🇺🇸 923 60 4ms 29 Jan 2024 251st rucin93 🇵🇱 923 60 5ms 10 Jul 2024 251st sean-niemann 🇺🇸 923 60 5ms 10 Jul 2024 251st edsrzf 🇳🇿 923 60 5ms 9 Mar 2026 260th KasperKivimaeki 🇫🇮 923 103 358ms 10 Dec 2025 261st Steffan153 🇫🇮 922 67 37ms 19 Aug 2024 261st JayXon 🇺🇸 922 67 37ms 19 Aug 2024 263rd sisyphus-ppcg 🇦🇺 921 65 106ms 19 Dec 2025 263rd ovs-code 🇩🇪 921 65 118ms 19 Dec 2025 265th Lydxn 🇨🇦 921 90 127ms 6 May 2022 266th Herbert00709 🇵🇱 921 92 59ms 17 Nov 2023 266th 4QT0R 921 92 61ms 23 Nov 2023 266th ovs-code 🇩🇪 921 92 56ms 3 Jun 2024 269th sisyphus-ppcg 🇦🇺 920 50 2,565ms 31 Jan 2023 269th saito-ta 🇯🇵 920 50 844ms 12 Dec 2024 271st Steffan153 🇫🇮 920 51 1,122ms 21 days ago 272nd uiamn 919 58 11ms 6 Sep 2022 272nd 5quiwyrm 919 58 12ms 29 Sep 2022 272nd alasdair-greenland 919 58 12ms 13 Jan 2023 272nd kirjavascript 919 58 11ms 4 Aug 2025 272nd Posandu 919 58 11ms 26 Aug 2025 272nd mrxz 🇳🇱 919 58 11ms 3 Sep 2025 278th primo-ppcg 🇹🇭 917 24 163ms 10 Dec 2022 279th Mukundan314 917 55 1,610ms 27 Dec 2025 280th btnlq 917 59 5ms 6 Nov 2022 280th DialFrost 🇸🇬 917 59 5ms 23 Dec 2025 282nd Irratix 🇳🇱 917 61 47ms 7 May 2022 282nd TFeld00 🇩🇰 917 61 26ms 17 May 2022 282nd hallvabo 🇳🇴 917 61 21ms 4 Sep 2022 282nd DialFrost 🇸🇬 917 61 26ms 19 Dec 2022 282nd anter69 🇭🇺 917 61 22ms 19 Dec 2022 282nd Alex-x90 🇺🇸 917 61 20ms 27 Dec 2022 282nd commandz0 🇺🇸 917 61 20ms 22 Aug 2023 282nd fgrosshans 🇫🇷 917 61 20ms 22 Jul 2024 282nd duckyluuk 🇳🇱 917 61 21ms 15 Aug 2024 282nd rucin93 🇵🇱 917 61 19ms 31 May 2025 282nd katss2 917 61 21ms 17 Aug 2025 282nd snoozingnewt 🇨🇦 917 61 21ms 6 Dec 2025 282nd Flekay 🇩🇪 917 61 20ms 15 Feb 2026 282nd JOrE20 917 61 17ms 25 Feb 2026 282nd jusaka 917 61 18ms 7 days ago 297th JayXon 🇺🇸 917 69 554ms 5 Apr 2023 297th Lydxn 🇨🇦 917 69 568ms 9 Apr 2023 299th GrayJoKing 🇦🇺 917 74 4ms 23 Dec 2025 299th FlyingPenguin223 917 74 6ms 29 Dec 2025 301st MichalMarsalek 🇨🇿 916 71 137ms 5 May 2022 301st Lydxn 🇨🇦 916 71 132ms 7 May 2022 301st GrayJoKing 🇦🇺 916 71 128ms 8 May 2022 301st JayXon 🇺🇸 916 71 128ms 8 May 2022 301st Steffan153 🇫🇮 916 71 131ms 9 Mar 2023 301st Shanethegamer 🇺🇸 916 71 126ms 15 May 2023 301st MeWhenI 🇻🇦 916 71 133ms 8 Aug 2023 301st sean-niemann 🇺🇸 916 71 129ms 9 Jan 2025 309th xnor-gate 915 63 187ms 20 Jan 2025 310th Steffan153 🇫🇮 915 76 12ms 15 May 2023 310th primo-ppcg 🇹🇭 915 76 20ms 15 May 2023 310th Lydxn 🇨🇦 915 76 8ms 22 May 2023 310th GrayJoKing 🇦🇺 915 76 12ms 24 Aug 2023 310th kg583 🇺🇸 915 76 12ms 22 Feb 2026 310th Steffan153 🇫🇮 915 76 23ms 20 days ago 316th pardouin 🇫🇷 914 72 2,442ms 21 May 2025 317th arctouch-cristiannevianna 914 85 345ms 3 Apr 2023 317th Widgitty 914 85 367ms 1 Sep 2023 317th tomtheisen 🇺🇸 914 85 386ms 10 Apr 2025 320th kmathis22 913 91 370ms 20 Nov 2025 First Prev 241–320 of 3,648 Next Last