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 880th CatsAreFluffy 846 63 13ms 18 Feb 2023 880th amiralitaheri 846 63 12ms 23 Feb 2023 880th RuyiLi 846 63 10ms 1 Apr 2023 880th TaserTheFox 🇺🇸 846 63 10ms 25 May 2023 880th pfysches-boop 846 63 11ms 6 Aug 2023 880th mhgockel 846 63 12ms 19 Aug 2023 880th NickTheEASDude 🇺🇸 846 63 11ms 18 Jan 2024 880th 823126 846 63 13ms 14 Nov 2024 880th Palladium02 846 63 11ms 12 May 2025 880th 4very 846 63 15ms 10 Jun 2025 880th Ultra814 846 63 13ms 21 Aug 2025 892nd retrohun 846 64 4ms 6 Nov 2022 892nd Re-Adventures 🇮🇳 846 64 4ms 7 Nov 2022 892nd stellartux 846 64 4ms 26 Dec 2023 892nd bac0id 846 64 4ms 29 Jun 2024 892nd snoozingnewt 🇨🇦 846 64 4ms 1 Sep 2024 892nd albanian-laundromat 🇺🇸 846 64 4ms 22 Sep 2025 898th NewDefectus 🇮🇱 846 73 2ms 6 May 2022 898th inventshah 846 73 2ms 12 Jun 2022 898th Natanaelel 🇸🇪 846 73 2ms 15 Jun 2022 898th Herbert00709 🇵🇱 846 73 2ms 22 Dec 2023 898th LorenzoDeGaspari 846 73 2ms 27 May 2024 898th Bpc-CPU 846 73 2ms 12 Jul 2025 898th AZTECCO 846 73 2ms 16 Sep 2025 898th CaedenHarper 🇨🇦 846 73 2ms 28 Sep 2025 898th prestosilver 🇺🇸 846 73 2ms 3 Dec 2025 898th albanian-laundromat 🇺🇸 846 73 3ms 20 Jan 2026 898th madex 🇩🇪 846 73 3ms 25 days ago 909th janAkali 🇷🇺 846 77 131ms 12 Feb 2025 910th Shanethegamer 🇺🇸 846 98 126ms 26 Oct 2022 910th emgordon154 846 98 125ms 18 Feb 2025 912th MeWhenI 🇻🇦 845 71 110ms 13 Dec 2022 913th SirBogman 🇺🇸 845 89 38ms 4 May 2022 914th emplv 🇱🇻 845 124 25ms 31 Oct 2022 914th emgordon154 845 124 27ms 16 days ago 916th DialFrost 🇸🇬 844 66 89ms 7 Apr 2025 916th KasperKivimaeki 🇫🇮 844 66 8ms 22 Dec 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 353ms 1 Oct 2023 918th madeforlosers 844 92 354ms 21 Nov 2024 918th ChromaChroma 844 92 377ms 7 Oct 2025 918th snoozingnewt 🇨🇦 844 92 377ms 8 Oct 2025 926th krcs 🇵🇱 843 53 284ms 9 May 2022 926th ryanlanegit 843 53 296ms 19 Jun 2022 926th sisyphus-ppcg 🇦🇺 843 53 450ms 15 Aug 2022 929th CLOStrophobic 🇮🇹 843 89 42ms 14 Feb 2025 930th error256 842 81 68ms 13 Sep 2024 931st kmathis22 842 100 42ms 13 Nov 2025 932nd raszpi 🇭🇺 841 77 121ms 1 Sep 2023 933rd DialFrost 🇸🇬 840 56 1,181ms 1 Sep 2025 933rd GolfingSuccess 🇬🇷 840 56 1,114ms 17 Feb 2026 935th frankgraziano 840 66 4ms 20 Apr 2025 936th eshilo-draper 840 75 89ms 6 Sep 2022 936th kmathis22 840 75 89ms 5 Sep 2025 938th sean-niemann 🇺🇸 840 76 141ms 8 Oct 2024 939th beardotpdf 840 99 422ms 12 Dec 2025 940th GolfingSuccess 🇬🇷 840 109 13ms 26 days ago 941st Codsilla 🇨🇦 839 51 255ms 1 Jul 2022 942nd steffan-polygolf 839 81 9ms 23 Feb 2023 942nd FranklinJiaChen 839 81 9ms 23 Feb 2026 944th Andriamanitra 🇫🇮 839 83 12ms 17 Apr 2023 944th Natanaelel 🇸🇪 839 83 12ms 8 Jul 2023 944th DialFrost 🇸🇬 839 83 17ms 1 Jan 2026 947th dokutan 839 88 39ms 9 Jun 2024 948th Steffan153 🇫🇮 839 97 31ms 18 Jan 2023 949th CatsAreFluffy 839 101 68ms 18 Feb 2023 949th annaproxy 839 101 59ms 9 May 2023 949th wojtekmal 839 101 59ms 15 Nov 2023 949th HumanoidCPU 839 101 56ms 6 May 2024 949th eMGeeneer 839 101 415ms 27 Jun 2024 949th bac0id 839 101 61ms 29 Jun 2024 949th michaelmoynihan 839 101 431ms 3 Sep 2025 949th snoozingnewt 🇨🇦 839 101 434ms 6 Oct 2025 957th scpchicken 🇵🇼 837 55 10ms 4 May 2022 957th SirBogman 🇺🇸 837 55 6ms 5 May 2022 957th Shanethegamer 🇺🇸 837 55 6ms 19 May 2023 957th DialFrost 🇸🇬 837 55 11ms 14 Feb 2025 First Prev 881–960 of 3,727 Next Last