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 Minesweeper 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 Binary Lambda Calculus Calendar Connect Four 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 Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Tower of Hanoi 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 Minesweeper 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 Binary Lambda Calculus Calendar Connect Four 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 Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Tower of Hanoi Turtle Tutorial # Golfer Points Chars Time Submitted 523rd snoozingnewt 🇺🇸 887 63 28ms 10 Sep 2023 523rd VictorStenvers 🇳🇱 887 63 24ms 13 Nov 2023 523rd 1231234md5 🇨🇳 887 63 21ms 14 Dec 2023 523rd f-tucker 887 63 35ms 6 Feb 2024 523rd JunkIce 887 63 23ms 24 Nov 2024 523rd Kowalskiexe 🇵🇱 887 63 20ms 19 Apr 2025 523rd 123mjb 887 63 23ms 2 Jun 2025 523rd DrakeSeteraO 887 63 53ms 20 days ago 534th RockOfStone 887 73 5ms 24 days ago 535th Shanethegamer 🇺🇸 886 61 6ms 31 Oct 2022 535th MeWhenI 🇻🇦 886 61 5ms 4 Nov 2022 537th lynn 886 65 316ms 5 May 2022 537th GrayJoKing 🇦🇺 886 65 327ms 5 May 2022 537th Sakisan 🇧🇪 886 65 214ms 6 May 2022 537th JayXon 🇺🇸 886 65 366ms 17 Oct 2022 537th Steffan153 🇫🇮 886 65 172ms 12 Nov 2022 537th tobeannouncd 886 65 331ms 25 Apr 2025 537th sean-niemann 🇺🇸 886 65 174ms 9 Jun 2025 544th stefangimmillaro 886 71 89ms 2 Oct 2022 544th Steffan153 🇫🇮 886 71 90ms 23 Feb 2023 544th Shanethegamer 🇺🇸 886 71 89ms 16 May 2023 544th sean-niemann 🇺🇸 886 71 92ms 12 Jul 2024 548th Shanethegamer 🇺🇸 886 72 90ms 8 May 2025 548th edsrzf 🇳🇿 886 72 103ms 4 Jul 2025 550th JayXon 🇺🇸 886 74 3,078ms 14 Nov 2024 551st DialFrost 🇸🇬 886 95 32ms 10 Dec 2024 552nd canissimia 🇦🇶 886 110 3,068ms 20 Feb 2023 553rd canissimia 🇦🇶 886 204 16ms 25 Nov 2023 554th GrayJoKing 🇦🇺 885 77 76ms 13 Sep 2024 555th Steffan153 🇫🇮 884 52 7ms 31 Dec 2022 556th albanian-laundromat 884 94 339ms 24 Sep 2025 556th kmathis22 884 94 340ms 14 Oct 2025 556th jkelly467 884 94 339ms 21 days ago 556th HumanoidCPU 884 94 337ms 5 days ago 560th DialFrost 🇸🇬 883 76 91ms 17 Mar 2025 561st jared-hughes 883 130 23ms 15 Dec 2024 562nd primo-ppcg 🇹🇭 882 85 43ms 14 Jan 2025 562nd MeWhenI 🇻🇦 882 85 44ms 21 Apr 2025 564th SiestaGuru 882 88 325ms 9 Jan 2023 564th rifatx 882 88 312ms 5 Jul 2024 564th kmathis22 882 88 349ms 25 Sep 2025 564th arcpolaris 882 88 297ms 5 days ago 568th stefangimmillaro 881 53 38ms 2 Oct 2022 568th Haksell 🇦🇶 881 53 40ms 22 Feb 2023 570th GrayJoKing 🇦🇺 881 70 2ms 6 May 2022 570th ovs-code 🇩🇪 881 70 2ms 8 Oct 2023 570th 09cf 881 70 13ms 8 Oct 2023 570th saito-ta 🇯🇵 881 70 3ms 21 Dec 2023 570th sean-niemann 🇺🇸 881 70 3ms 10 Jul 2024 570th KasperKivimaeki 🇫🇮 881 70 6ms 8 Aug 2025 576th ovs-code 🇩🇪 881 89 457ms 24 Jul 2024 576th jipsong 🇩🇪 881 89 467ms 7 Apr 2025 578th nipzu 881 94 136ms 17 May 2022 578th Natanaelel 🇸🇪 881 94 136ms 17 Jun 2022 578th nkoppel 881 94 149ms 19 Oct 2022 578th ovs-code 🇩🇪 881 94 151ms 21 Jun 2023 578th mousetail 🇳🇱 881 94 142ms 12 Jan 2024 583rd Irratix 🇳🇱 881 96 53ms 4 May 2022 583rd MeWhenI 🇻🇦 881 96 56ms 1 Jun 2022 583rd janbehrens 🇩🇪 881 96 54ms 21 Apr 2023 583rd Shanethegamer 🇺🇸 881 96 56ms 15 May 2023 583rd Yewzir 🇧🇪 881 96 57ms 11 Nov 2023 583rd MateuszPietrzak 🇵🇱 881 96 56ms 18 Nov 2023 583rd kkoenig 881 96 55ms 21 Dec 2023 583rd BlankSpruce 881 96 56ms 20 Aug 2024 583rd fuzzylojik-golf 🇺🇸 881 96 63ms 14 Jun 2025 592nd m-tkach 🇺🇦 881 112 69ms 22 Jun 2025 593rd sisyphus-ppcg 🇦🇺 880 40 362ms 31 Jan 2023 593rd sean-niemann 🇺🇸 880 40 339ms 8 Mar 2025 595th primo-ppcg 🇹🇭 880 52 213ms 5 May 2022 595th dvargas46 🇺🇸 880 52 83ms 22 Dec 2022 597th DialFrost 🇸🇬 880 56 820ms 1 Sep 2025 598th emplv 🇱🇻 880 110 261ms 5 May 2022 598th Shanethegamer 🇺🇸 880 110 277ms 21 Nov 2023 598th edsrzf 🇳🇿 880 110 247ms 28 Nov 2024 First Prev 526–600 of 3,436 Next Last