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 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 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 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 ><> 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 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 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 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 877th TaserTheFox 🇺🇸 846 63 14ms 25 May 2023 877th pfysches-boop 846 63 10ms 6 Aug 2023 877th mhgockel 846 63 10ms 19 Aug 2023 877th NickTheEASDude 🇺🇸 846 63 11ms 18 Jan 2024 877th 823126 846 63 13ms 14 Nov 2024 877th Palladium02 846 63 10ms 12 May 2025 877th 4very 846 63 12ms 10 Jun 2025 877th Ultra814 846 63 11ms 21 Aug 2025 889th NewDefectus 🇮🇱 846 73 3ms 6 May 2022 889th inventshah 846 73 2ms 12 Jun 2022 889th Natanaelel 🇸🇪 846 73 2ms 15 Jun 2022 889th Herbert00709 🇵🇱 846 73 2ms 22 Dec 2023 889th LorenzoDeGaspari 846 73 2ms 27 May 2024 889th Bpc-CPU 846 73 2ms 12 Jul 2025 889th AZTECCO 846 73 2ms 16 Sep 2025 889th CaedenHarper 🇨🇦 846 73 2ms 28 Sep 2025 889th prestosilver 🇺🇸 846 73 2ms 3 Dec 2025 889th albanian-laundromat 846 73 3ms 20 Jan 2026 899th Natanaelel 🇸🇪 845 57 459ms 17 Jan 2024 899th Kacarott 🇦🇺 845 57 402ms 10 Sep 2024 899th albanian-laundromat 845 57 526ms 7 Oct 2025 902nd retrohun 845 64 4ms 6 Nov 2022 902nd Re-Adventures 🇮🇳 845 64 4ms 7 Nov 2022 902nd stellartux 845 64 4ms 26 Dec 2023 902nd bac0id 845 64 4ms 29 Jun 2024 902nd snoozingnewt 🇨🇦 845 64 4ms 1 Sep 2024 902nd albanian-laundromat 845 64 4ms 22 Sep 2025 908th Shanethegamer 🇺🇸 845 98 121ms 26 Oct 2022 908th emgordon154 845 98 121ms 18 Feb 2025 910th janAkali 🇷🇺 844 77 132ms 12 Feb 2025 911th bschorno 844 92 375ms 12 Oct 2022 911th ChrisTheisen 844 92 371ms 14 Dec 2022 911th kellantech 844 92 408ms 4 Jul 2023 911th Mezzofloat 844 92 402ms 26 Aug 2023 911th Maximizer02 844 92 408ms 1 Oct 2023 911th madeforlosers 844 92 407ms 21 Nov 2024 911th ChromaChroma 844 92 407ms 7 Oct 2025 911th snoozingnewt 🇨🇦 844 92 422ms 8 Oct 2025 919th DialFrost 🇸🇬 843 66 93ms 7 Apr 2025 919th KasperKivimaeki 🇫🇮 843 66 6ms 22 Dec 2025 921st krcs 🇵🇱 842 53 280ms 9 May 2022 921st ryanlanegit 842 53 312ms 19 Jun 2022 921st sisyphus-ppcg 🇦🇺 842 53 453ms 15 Aug 2022 924th MeWhenI 🇻🇦 842 71 106ms 13 Dec 2022 925th SirBogman 🇺🇸 842 89 38ms 4 May 2022 926th error256 841 81 68ms 13 Sep 2024 927th CLOStrophobic 🇮🇹 841 89 42ms 14 Feb 2025 928th kmathis22 841 100 31ms 13 Nov 2025 929th emplv 🇱🇻 841 124 25ms 31 Oct 2022 930th raszpi 🇭🇺 840 77 117ms 1 Sep 2023 931st MeWhenI 🇻🇦 840 164 1,639ms 7 Nov 2025 932nd frankgraziano 839 66 4ms 20 Apr 2025 933rd eshilo-draper 839 75 83ms 6 Sep 2022 933rd kmathis22 839 75 79ms 5 Sep 2025 935th sean-niemann 🇺🇸 839 76 97ms 8 Oct 2024 936th beardotpdf 839 99 422ms 12 Dec 2025 937th Codsilla 🇨🇦 838 51 263ms 1 Jul 2022 938th Andriamanitra 🇫🇮 838 83 12ms 17 Apr 2023 938th Natanaelel 🇸🇪 838 83 12ms 8 Jul 2023 940th Steffan153 🇫🇮 838 97 31ms 18 Jan 2023 941st CatsAreFluffy 838 101 63ms 18 Feb 2023 941st annaproxy 838 101 64ms 9 May 2023 941st wojtekmal 838 101 66ms 15 Nov 2023 941st HumanoidCPU 838 101 68ms 6 May 2024 941st eMGeeneer 838 101 425ms 27 Jun 2024 941st bac0id 838 101 59ms 29 Jun 2024 941st michaelmoynihan 838 101 439ms 3 Sep 2025 941st snoozingnewt 🇨🇦 838 101 418ms 6 Oct 2025 949th Shanethegamer 🇺🇸 837 58 1,035ms 17 Sep 2025 950th steffan-polygolf 837 81 10ms 23 Feb 2023 950th FranklinJiaChen 837 81 9ms 2 days ago 952nd dokutan 837 88 39ms 9 Jun 2024 953rd scpchicken 🇵🇼 836 55 10ms 4 May 2022 953rd SirBogman 🇺🇸 836 55 6ms 5 May 2022 953rd Shanethegamer 🇺🇸 836 55 6ms 19 May 2023 953rd DialFrost 🇸🇬 836 55 10ms 14 Feb 2025 957th SirBogman 🇺🇸 835 36 9ms 5 May 2022 957th Natanaelel 🇸🇪 835 36 87ms 15 Jun 2022 957th Steffan153 🇫🇮 835 36 91ms 18 Jan 2023 957th codereport 🇨🇦 835 36 9ms 1 Jun 2024 First Prev 881–960 of 3,572 Next Last