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 878th saito-ta 🇯🇵 846 26 154ms 12 Dec 2024 882nd Natanaelel 🇸🇪 846 57 453ms 17 Jan 2024 882nd Kacarott 🇦🇺 846 57 461ms 10 Sep 2024 882nd albanian-laundromat 🇺🇸 846 57 463ms 7 Oct 2025 885th randolchance 846 63 10ms 8 Jan 2023 885th CatsAreFluffy 846 63 13ms 18 Feb 2023 885th amiralitaheri 846 63 12ms 23 Feb 2023 885th RuyiLi 846 63 10ms 1 Apr 2023 885th TaserTheFox 🇺🇸 846 63 10ms 25 May 2023 885th pfysches-boop 846 63 11ms 6 Aug 2023 885th mhgockel 846 63 12ms 19 Aug 2023 885th NickTheEASDude 🇺🇸 846 63 11ms 18 Jan 2024 885th 823126 846 63 13ms 14 Nov 2024 885th Palladium02 846 63 11ms 12 May 2025 885th 4very 846 63 15ms 10 Jun 2025 885th Ultra814 846 63 13ms 21 Aug 2025 897th retrohun 846 64 4ms 6 Nov 2022 897th Re-Adventures 🇮🇳 846 64 4ms 7 Nov 2022 897th stellartux 846 64 4ms 26 Dec 2023 897th bac0id 846 64 4ms 29 Jun 2024 897th snoozingnewt 🇨🇦 846 64 4ms 1 Sep 2024 897th albanian-laundromat 🇺🇸 846 64 4ms 22 Sep 2025 903rd NewDefectus 🇮🇱 846 73 2ms 6 May 2022 903rd inventshah 846 73 2ms 12 Jun 2022 903rd Natanaelel 🇸🇪 846 73 2ms 15 Jun 2022 903rd Herbert00709 🇵🇱 846 73 2ms 22 Dec 2023 903rd LorenzoDeGaspari 846 73 2ms 27 May 2024 903rd Bpc-CPU 846 73 2ms 12 Jul 2025 903rd AZTECCO 846 73 2ms 16 Sep 2025 903rd CaedenHarper 🇨🇦 846 73 2ms 28 Sep 2025 903rd prestosilver 🇺🇸 846 73 2ms 3 Dec 2025 903rd albanian-laundromat 🇺🇸 846 73 3ms 20 Jan 2026 903rd madex 🇩🇪 846 73 2ms 19 days ago 914th Shanethegamer 🇺🇸 846 98 126ms 26 Oct 2022 914th emgordon154 846 98 125ms 18 Feb 2025 916th janAkali 🇷🇺 845 77 131ms 12 Feb 2025 917th MeWhenI 🇻🇦 844 71 110ms 13 Dec 2022 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 emplv 🇱🇻 844 124 25ms 31 Oct 2022 926th emgordon154 844 124 27ms 11 days ago 928th DialFrost 🇸🇬 843 66 87ms 7 Apr 2025 928th KasperKivimaeki 🇫🇮 843 66 7ms 22 Dec 2025 930th SirBogman 🇺🇸 843 89 38ms 4 May 2022 931st krcs 🇵🇱 842 53 284ms 9 May 2022 931st ryanlanegit 842 53 296ms 19 Jun 2022 931st sisyphus-ppcg 🇦🇺 842 53 450ms 15 Aug 2022 934th error256 842 81 68ms 13 Sep 2024 935th CLOStrophobic 🇮🇹 842 89 42ms 14 Feb 2025 936th kmathis22 842 100 42ms 13 Nov 2025 937th MeWhenI 🇻🇦 842 164 1,639ms 7 Nov 2025 938th frankgraziano 840 66 4ms 20 Apr 2025 939th sean-niemann 🇺🇸 840 76 141ms 8 Oct 2024 940th raszpi 🇭🇺 840 77 121ms 1 Sep 2023 941st beardotpdf 840 99 422ms 12 Dec 2025 942nd GolfingSuccess 🇬🇷 840 109 17ms 21 days ago 943rd DialFrost 🇸🇬 839 56 1,181ms 1 Sep 2025 943rd GolfingSuccess 🇬🇷 839 56 1,114ms 17 Feb 2026 945th eshilo-draper 839 75 89ms 6 Sep 2022 945th kmathis22 839 75 89ms 5 Sep 2025 947th Andriamanitra 🇫🇮 839 83 12ms 17 Apr 2023 947th Natanaelel 🇸🇪 839 83 12ms 8 Jul 2023 949th dokutan 839 88 39ms 9 Jun 2024 950th Steffan153 🇫🇮 839 97 31ms 18 Jan 2023 951st CatsAreFluffy 839 101 68ms 18 Feb 2023 951st annaproxy 839 101 59ms 9 May 2023 951st wojtekmal 839 101 59ms 15 Nov 2023 951st HumanoidCPU 839 101 56ms 6 May 2024 951st eMGeeneer 839 101 415ms 27 Jun 2024 951st bac0id 839 101 61ms 29 Jun 2024 951st michaelmoynihan 839 101 431ms 3 Sep 2025 951st snoozingnewt 🇨🇦 839 101 434ms 6 Oct 2025 959th Codsilla 🇨🇦 838 51 263ms 1 Jul 2022 960th steffan-polygolf 838 81 9ms 23 Feb 2023 First Prev 881–960 of 3,704 Next Last