Collatz in all languages in chars. Cheevos Holes Recent Holes Langs Medals Misc 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 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 Morse Decoder Morse Encoder 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 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 Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir 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 ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Erlang Fennel Harbour Hare Haxe Hush Hy iogii Knight Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir 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 ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Erlang Fennel Harbour Hare Haxe Hush Hy iogii Knight 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 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 Morse Decoder Morse Encoder 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 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 Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 298th GrayJoKing 🇦🇺 914 76 12ms 24 Aug 2023 302nd arctouch-cristiannevianna 913 85 366ms 3 Apr 2023 302nd Widgitty 913 85 356ms 1 Sep 2023 302nd tomtheisen 🇺🇸 913 85 340ms 10 Apr 2025 305th edsrzf 🇳🇿 912 54 1,070ms 13 Sep 2025 305th CaedenHarper 🇨🇦 912 54 1,020ms 24 days ago 305th sean-niemann 🇺🇸 912 54 1,189ms 24 days ago 308th primo-ppcg 🇹🇭 911 61 7ms 6 May 2022 308th sisyphus-ppcg 🇦🇺 911 61 11ms 14 Jul 2022 310th Lydxn 🇨🇦 911 70 96ms 7 May 2022 310th JayXon 🇺🇸 911 70 96ms 7 May 2022 312th Steffan153 🇫🇮 911 71 126ms 14 Oct 2022 312th Shanethegamer 🇺🇸 911 71 107ms 15 Oct 2022 312th stefangimmillaro 911 71 111ms 16 Oct 2022 312th MeWhenI 🇻🇦 911 71 127ms 16 Oct 2022 312th Steffan153 🇫🇮 911 71 6ms 10 Dec 2022 312th synt7x 🇺🇸 911 71 4ms 7 Jul 2025 318th pardouin 🇫🇷 911 72 2,778ms 21 May 2025 319th annaproxy 911 78 128ms 13 Jan 2023 319th IanUtley 911 78 119ms 12 Nov 2023 319th GrayJoKing 🇦🇺 911 78 84ms 28 Nov 2023 319th edsrzf 🇳🇿 911 78 21ms 16 Aug 2025 323rd Bubbler-4 910 33 2,717ms 6 May 2022 323rd rak1507 🇬🇧 910 33 119ms 8 May 2022 323rd ngn 🇧🇬 910 33 26ms 11 May 2022 323rd zacjl 910 33 36ms 3 Jun 2025 323rd GrayJoKing 🇦🇺 910 33 15ms 4 Jun 2025 328th Shanethegamer 🇺🇸 910 86 390ms 15 May 2023 328th JayXon 🇺🇸 910 86 508ms 15 May 2023 328th Steffan153 🇫🇮 910 86 389ms 16 May 2023 328th Lydxn 🇨🇦 910 86 465ms 16 May 2023 328th GrayJoKing 🇦🇺 910 86 400ms 11 Aug 2023 328th sean-niemann 🇺🇸 910 86 458ms 11 Jul 2024 334th andersk 🇺🇸 910 91 137ms 25 Oct 2022 334th Super-Pizza 🇨🇦 910 91 126ms 4 Dec 2022 334th klixel 🇨🇦 910 91 119ms 20 May 2023 334th lynn 910 91 141ms 6 Jul 2024 334th edsrzf 🇳🇿 910 91 120ms 29 Nov 2024 334th DialFrost 🇸🇬 910 91 129ms 7 Apr 2025 340th Lydxn 🇨🇦 909 47 285ms 5 May 2022 341st JayXon 🇺🇸 909 53 443ms 17 Aug 2024 342nd tailorspy 909 93 71ms 27 May 2024 342nd sean-niemann 🇺🇸 909 93 65ms 9 Jun 2025 344th Lydxn 🇨🇦 908 81 45ms 1 Apr 2023 345th Shanethegamer 🇺🇸 907 61 5ms 9 Oct 2023 345th edsrzf 🇳🇿 907 61 4ms 4 Jul 2025 347th nai62 907 68 8ms 27 Aug 2022 348th ovs-code 🇩🇪 907 75 74ms 12 Sep 2024 348th Kacarott 🇦🇺 907 75 78ms 13 Sep 2024 350th GrayJoKing 🇦🇺 906 74 81ms 1 Nov 2023 351st ovs-code 🇩🇪 905 67 103ms 13 Dec 2022 351st Steffan153 🇫🇮 905 67 118ms 18 Dec 2022 351st Lydxn 🇨🇦 905 67 115ms 4 Feb 2023 351st DialFrost 🇸🇬 905 67 123ms 17 Mar 2025 355th lynn 905 78 1,390ms 5 May 2022 356th Lydxn 🇨🇦 905 107 295ms 6 May 2022 356th CaedenHarper 🇨🇦 905 107 281ms 17 days ago 358th KrausRaus 🇺🇸 903 59 11ms 4 May 2022 358th voytxt 🇨🇿 903 59 15ms 4 May 2022 358th KingSkyrock 🇺🇸 903 59 11ms 18 May 2022 358th ZakkkkAttackkkk 🇵🇭 903 59 10ms 14 Jul 2022 358th aksyristos 903 59 10ms 28 Oct 2022 358th nstearns96 🇬🇧 903 59 11ms 28 Nov 2022 358th janbehrens 🇩🇪 903 59 13ms 17 May 2023 358th Shanethegamer 🇺🇸 903 59 11ms 25 May 2023 358th Maznek 903 59 10ms 26 Jun 2023 358th SpiritAxolotl 🇺🇸 903 59 14ms 20 Mar 2024 358th Andrey-Plotnikov 903 59 10ms 19 May 2024 358th emgordon154 903 59 11ms 5 Aug 2024 358th duckyluuk 🇳🇱 903 59 9ms 3 Oct 2024 358th lifthrasiir 🇰🇷 903 59 11ms 23 Nov 2024 358th fuzzylojik-golf 🇺🇸 903 59 13ms 1 Jun 2025 358th acollett89 903 59 11ms 17 Jun 2025 358th iczelia 🇩🇪 903 59 12ms 23 Sep 2025 375th GrayJoKing 🇦🇺 903 71 289ms 10 Aug 2023 First Prev 301–375 of 3,385 Next Last