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 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 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 Rectangle Fill 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 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 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 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 Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 880th AlephSquirrel 846 26 157ms 6 Jan 2023 880th ovs-code 🇩🇪 846 26 367ms 5 May 2024 880th saito-ta 🇯🇵 846 26 154ms 12 Dec 2024 884th Natanaelel 🇸🇪 846 57 459ms 17 Jan 2024 884th Kacarott 🇦🇺 846 57 402ms 10 Sep 2024 884th albanian-laundromat 846 57 526ms 7 Oct 2025 887th randolchance 846 63 11ms 8 Jan 2023 887th CatsAreFluffy 846 63 10ms 18 Feb 2023 887th amiralitaheri 846 63 10ms 23 Feb 2023 887th RuyiLi 846 63 11ms 1 Apr 2023 887th TaserTheFox 🇺🇸 846 63 10ms 25 May 2023 887th pfysches-boop 846 63 10ms 6 Aug 2023 887th mhgockel 846 63 10ms 19 Aug 2023 887th NickTheEASDude 🇺🇸 846 63 10ms 18 Jan 2024 887th 823126 846 63 11ms 14 Nov 2024 887th Palladium02 846 63 10ms 12 May 2025 887th 4very 846 63 10ms 10 Jun 2025 887th Ultra814 846 63 13ms 21 Aug 2025 899th NewDefectus 🇮🇱 846 73 3ms 6 May 2022 899th inventshah 846 73 2ms 12 Jun 2022 899th Natanaelel 🇸🇪 846 73 2ms 15 Jun 2022 899th Herbert00709 🇵🇱 846 73 2ms 22 Dec 2023 899th LorenzoDeGaspari 846 73 2ms 27 May 2024 899th Bpc-CPU 846 73 2ms 12 Jul 2025 899th AZTECCO 846 73 2ms 16 Sep 2025 899th CaedenHarper 🇨🇦 846 73 2ms 28 Sep 2025 899th prestosilver 🇺🇸 846 73 2ms 3 Dec 2025 899th albanian-laundromat 846 73 3ms 20 Jan 2026 909th Shanethegamer 🇺🇸 846 98 133ms 26 Oct 2022 909th emgordon154 846 98 122ms 18 Feb 2025 911th retrohun 845 64 4ms 6 Nov 2022 911th Re-Adventures 🇮🇳 845 64 4ms 7 Nov 2022 911th stellartux 845 64 4ms 26 Dec 2023 911th bac0id 845 64 4ms 29 Jun 2024 911th snoozingnewt 🇨🇦 845 64 4ms 1 Sep 2024 911th albanian-laundromat 845 64 4ms 22 Sep 2025 917th janAkali 🇷🇺 844 77 131ms 12 Feb 2025 918th bschorno 844 92 341ms 12 Oct 2022 918th ChrisTheisen 844 92 345ms 14 Dec 2022 918th kellantech 844 92 351ms 4 Jul 2023 918th Mezzofloat 844 92 358ms 26 Aug 2023 918th Maximizer02 844 92 365ms 1 Oct 2023 918th madeforlosers 844 92 380ms 21 Nov 2024 918th ChromaChroma 844 92 403ms 7 Oct 2025 918th snoozingnewt 🇨🇦 844 92 398ms 8 Oct 2025 926th DialFrost 🇸🇬 843 66 87ms 7 Apr 2025 926th KasperKivimaeki 🇫🇮 843 66 7ms 22 Dec 2025 928th krcs 🇵🇱 842 53 284ms 9 May 2022 928th ryanlanegit 842 53 311ms 19 Jun 2022 928th sisyphus-ppcg 🇦🇺 842 53 456ms 15 Aug 2022 931st MeWhenI 🇻🇦 842 71 110ms 13 Dec 2022 932nd SirBogman 🇺🇸 842 89 38ms 4 May 2022 933rd error256 841 81 68ms 13 Sep 2024 934th CLOStrophobic 🇮🇹 841 89 42ms 14 Feb 2025 935th kmathis22 841 100 31ms 13 Nov 2025 936th emplv 🇱🇻 841 124 25ms 31 Oct 2022 937th raszpi 🇭🇺 840 77 111ms 1 Sep 2023 938th MeWhenI 🇻🇦 840 164 1,639ms 7 Nov 2025 939th frankgraziano 839 66 4ms 20 Apr 2025 940th eshilo-draper 839 75 90ms 6 Sep 2022 940th kmathis22 839 75 85ms 5 Sep 2025 942nd sean-niemann 🇺🇸 839 76 141ms 8 Oct 2024 943rd beardotpdf 839 99 422ms 12 Dec 2025 944th Codsilla 🇨🇦 838 51 263ms 1 Jul 2022 945th DialFrost 🇸🇬 838 56 1,180ms 1 Sep 2025 945th GolfingSuccess 🇬🇷 838 56 905ms 17 Feb 2026 947th steffan-polygolf 838 81 10ms 23 Feb 2023 947th FranklinJiaChen 838 81 9ms 24 days ago 949th Andriamanitra 🇫🇮 838 83 12ms 17 Apr 2023 949th Natanaelel 🇸🇪 838 83 12ms 8 Jul 2023 951st Steffan153 🇫🇮 838 97 31ms 18 Jan 2023 952nd CatsAreFluffy 838 101 61ms 18 Feb 2023 952nd annaproxy 838 101 60ms 9 May 2023 952nd wojtekmal 838 101 60ms 15 Nov 2023 952nd HumanoidCPU 838 101 60ms 6 May 2024 952nd eMGeeneer 838 101 430ms 27 Jun 2024 952nd bac0id 838 101 62ms 29 Jun 2024 952nd michaelmoynihan 838 101 442ms 3 Sep 2025 952nd snoozingnewt 🇨🇦 838 101 421ms 6 Oct 2025 960th dokutan 837 88 39ms 9 Jun 2024 First Prev 881–960 of 3,615 Next Last