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 236th Grabnukebomb 924 84 366ms 13 Sep 2024 236th Shanethegamer 🇺🇸 924 84 388ms 9 Apr 2025 236th HumanoidCPU 924 84 390ms 10 Apr 2025 236th annaproxy 924 84 416ms 11 Apr 2025 236th Re-Adventures 🇮🇳 924 84 392ms 15 Apr 2025 236th janbehrens 🇩🇪 924 84 380ms 17 Apr 2025 247th ovs-code 🇩🇪 923 60 5ms 9 Oct 2023 247th GrayJoKing 🇦🇺 923 60 4ms 11 Oct 2023 247th Lydxn 🇨🇦 923 60 5ms 11 Oct 2023 247th GolfingSuccess 🇬🇷 923 60 5ms 16 Nov 2023 247th Steffan153 🇫🇮 923 60 5ms 28 Jan 2024 247th JayXon 🇺🇸 923 60 4ms 29 Jan 2024 247th rucin93 🇵🇱 923 60 5ms 10 Jul 2024 247th sean-niemann 🇺🇸 923 60 5ms 10 Jul 2024 247th edsrzf 🇳🇿 923 60 5ms 23 days ago 256th h3ra993huskp 🇯🇵 923 90 425ms 30 Nov 2025 257th KasperKivimaeki 🇫🇮 923 103 285ms 10 Dec 2025 258th Steffan153 🇫🇮 922 67 37ms 19 Aug 2024 258th JayXon 🇺🇸 922 67 37ms 19 Aug 2024 260th sisyphus-ppcg 🇦🇺 921 65 106ms 19 Dec 2025 260th ovs-code 🇩🇪 921 65 118ms 19 Dec 2025 262nd Lydxn 🇨🇦 921 90 128ms 6 May 2022 263rd Steffan153 🇫🇮 920 51 2,377ms 14 days ago 264th Herbert00709 🇵🇱 920 92 59ms 17 Nov 2023 264th 4QT0R 920 92 60ms 23 Nov 2023 264th ovs-code 🇩🇪 920 92 63ms 3 Jun 2024 267th sisyphus-ppcg 🇦🇺 919 50 2,787ms 31 Jan 2023 267th saito-ta 🇯🇵 919 50 901ms 12 Dec 2024 269th uiamn 919 58 11ms 6 Sep 2022 269th 5quiwyrm 919 58 11ms 29 Sep 2022 269th alasdair-greenland 919 58 11ms 13 Jan 2023 269th kirjavascript 919 58 11ms 4 Aug 2025 269th Posandu 919 58 10ms 26 Aug 2025 269th mrxz 🇳🇱 919 58 11ms 3 Sep 2025 275th primo-ppcg 🇹🇭 917 24 163ms 10 Dec 2022 276th Mukundan314 917 55 1,616ms 27 Dec 2025 277th btnlq 917 59 5ms 6 Nov 2022 277th DialFrost 🇸🇬 917 59 5ms 23 Dec 2025 279th Irratix 🇳🇱 917 61 45ms 7 May 2022 279th TFeld00 🇩🇰 917 61 25ms 17 May 2022 279th hallvabo 🇳🇴 917 61 21ms 4 Sep 2022 279th DialFrost 🇸🇬 917 61 24ms 19 Dec 2022 279th anter69 🇭🇺 917 61 22ms 19 Dec 2022 279th Alex-x90 🇺🇸 917 61 21ms 27 Dec 2022 279th commandz0 🇺🇸 917 61 21ms 22 Aug 2023 279th fgrosshans 🇫🇷 917 61 19ms 22 Jul 2024 279th duckyluuk 🇳🇱 917 61 21ms 15 Aug 2024 279th rucin93 🇵🇱 917 61 19ms 31 May 2025 279th katss2 917 61 19ms 17 Aug 2025 279th snoozingnewt 🇨🇦 917 61 19ms 6 Dec 2025 279th Flekay 🇩🇪 917 61 18ms 15 Feb 2026 279th JOrE20 917 61 17ms 25 Feb 2026 279th jusaka 917 61 18ms 9 hours ago 294th JayXon 🇺🇸 917 69 554ms 5 Apr 2023 294th Lydxn 🇨🇦 917 69 568ms 9 Apr 2023 296th GrayJoKing 🇦🇺 917 74 4ms 23 Dec 2025 296th FlyingPenguin223 917 74 6ms 29 Dec 2025 298th MichalMarsalek 🇨🇿 916 71 137ms 5 May 2022 298th Lydxn 🇨🇦 916 71 132ms 7 May 2022 298th GrayJoKing 🇦🇺 916 71 139ms 8 May 2022 298th JayXon 🇺🇸 916 71 128ms 8 May 2022 298th Steffan153 🇫🇮 916 71 131ms 9 Mar 2023 298th Shanethegamer 🇺🇸 916 71 126ms 15 May 2023 298th MeWhenI 🇻🇦 916 71 133ms 8 Aug 2023 298th sean-niemann 🇺🇸 916 71 129ms 9 Jan 2025 306th xnor-gate 915 63 187ms 20 Jan 2025 307th Steffan153 🇫🇮 915 76 12ms 15 May 2023 307th primo-ppcg 🇹🇭 915 76 20ms 15 May 2023 307th Lydxn 🇨🇦 915 76 8ms 22 May 2023 307th GrayJoKing 🇦🇺 915 76 12ms 24 Aug 2023 307th kg583 🇺🇸 915 76 12ms 22 Feb 2026 307th Steffan153 🇫🇮 915 76 23ms 13 days ago 313th arctouch-cristiannevianna 914 85 345ms 3 Apr 2023 313th Widgitty 914 85 368ms 1 Sep 2023 313th tomtheisen 🇺🇸 914 85 424ms 10 Apr 2025 316th pardouin 🇫🇷 913 72 2,717ms 21 May 2025 317th kmathis22 913 91 370ms 20 Nov 2025 318th primo-ppcg 🇹🇭 912 61 7ms 6 May 2022 318th sisyphus-ppcg 🇦🇺 912 61 9ms 14 Jul 2022 320th annaproxy 912 78 112ms 13 Jan 2023 First Prev 241–320 of 3,635 Next Last