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 522nd Steffan153 🇫🇮 886 65 12 Nov 2022 522nd tobeannouncd 886 65 25 Apr 2025 522nd sean-niemann 🇺🇸 886 65 9 Jun 2025 529th stefangimmillaro 886 71 2 Oct 2022 529th Steffan153 🇫🇮 886 71 23 Feb 2023 529th Shanethegamer 🇺🇸 886 71 16 May 2023 529th sean-niemann 🇺🇸 886 71 12 Jul 2024 533rd Shanethegamer 🇺🇸 886 72 8 May 2025 533rd edsrzf 🇳🇿 886 72 4 Jul 2025 535th JayXon 🇺🇸 886 74 14 Nov 2024 536th canissimia 🇦🇶 886 110 20 Feb 2023 537th canissimia 🇦🇶 886 204 25 Nov 2023 538th Shanethegamer 🇺🇸 885 61 31 Oct 2022 538th MeWhenI 🇻🇦 885 61 4 Nov 2022 540th Steffan153 🇫🇮 884 52 31 Dec 2022 541st DialFrost 🇸🇬 884 95 10 Dec 2024 542nd GrayJoKing 🇦🇺 883 77 13 Sep 2024 543rd albanian-laundromat 883 94 23 days ago 543rd kmathis22 883 94 2 days ago 545th jared-hughes 883 130 15 Dec 2024 546th DialFrost 🇸🇬 882 76 17 Mar 2025 547th primo-ppcg 🇹🇭 882 85 14 Jan 2025 547th MeWhenI 🇻🇦 882 85 21 Apr 2025 549th stefangimmillaro 881 53 2 Oct 2022 549th Haksell 🇦🇶 881 53 22 Feb 2023 551st GrayJoKing 🇦🇺 881 70 6 May 2022 551st ovs-code 🇩🇪 881 70 8 Oct 2023 551st 09cf 881 70 8 Oct 2023 551st saito-ta 🇯🇵 881 70 21 Dec 2023 551st sean-niemann 🇺🇸 881 70 10 Jul 2024 551st KasperKivimaeki 🇫🇮 881 70 8 Aug 2025 557th SiestaGuru 881 88 9 Jan 2023 557th rifatx 881 88 5 Jul 2024 557th kmathis22 881 88 21 days ago 560th nipzu 881 94 17 May 2022 560th Natanaelel 🇸🇪 881 94 17 Jun 2022 560th nkoppel 881 94 19 Oct 2022 560th ovs-code 🇩🇪 881 94 21 Jun 2023 560th mousetail 🇳🇱 881 94 12 Jan 2024 565th m-tkach 🇺🇦 881 112 22 Jun 2025 566th sisyphus-ppcg 🇦🇺 880 40 31 Jan 2023 566th sean-niemann 🇺🇸 880 40 8 Mar 2025 568th primo-ppcg 🇹🇭 880 52 5 May 2022 568th dvargas46 🇺🇸 880 52 22 Dec 2022 570th DialFrost 🇸🇬 880 56 1 Sep 2025 571st ovs-code 🇩🇪 880 89 24 Jul 2024 571st jipsong 🇩🇪 880 89 7 Apr 2025 573rd Irratix 🇳🇱 880 96 4 May 2022 573rd MeWhenI 🇻🇦 880 96 1 Jun 2022 573rd janbehrens 🇩🇪 880 96 21 Apr 2023 573rd Shanethegamer 🇺🇸 880 96 15 May 2023 573rd Yewzir 🇧🇪 880 96 11 Nov 2023 573rd MateuszPietrzak 🇵🇱 880 96 18 Nov 2023 573rd kkoenig 880 96 21 Dec 2023 573rd BlankSpruce 880 96 20 Aug 2024 573rd fuzzylojik-golf 🇺🇸 880 96 14 Jun 2025 582nd emplv 🇱🇻 880 110 5 May 2022 582nd Shanethegamer 🇺🇸 880 110 21 Nov 2023 582nd edsrzf 🇳🇿 880 110 28 Nov 2024 582nd targrik 880 110 30 Jun 2025 586th ovs-code 🇩🇪 878 73 22 Jul 2023 587th Shanethegamer 🇺🇸 878 81 19 Dec 2023 587th emgordon154 878 81 29 Jul 2025 589th GrayJoKing 🇦🇺 877 72 31 May 2022 589th Shanethegamer 🇺🇸 877 72 1 Jun 2022 589th Steffan153 🇫🇮 877 72 10 Dec 2022 592nd steffan-polygolf 877 74 14 Feb 2024 593rd mousetail 🇳🇱 876 40 29 Aug 2025 594th primo-ppcg 🇹🇭 876 193 14 Aug 2025 595th GrayJoKing 🇦🇺 875 84 19 Jun 2022 595th primo-ppcg 🇹🇭 875 84 29 Jun 2022 597th Shanethegamer 🇺🇸 875 142 27 Mar 2025 597th DialFrost 🇸🇬 875 142 28 Mar 2025 597th emgordon154 875 142 10 Apr 2025 600th Shanethegamer 🇺🇸 874 51 15 May 2023 First Prev 526–600 of 3,375 Next Last