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 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 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 Hilbert Curve Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle 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 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 Groovy Harbour Hare Haxe Hush Hy iogii Knight 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 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 Groovy Harbour Hare Haxe Hush Hy iogii Knight 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 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 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 Hilbert Curve Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial # Golfer Points Chars Time 225th tkr-sh 🇫🇷 923 84 20 Aug 2022 225th Nickmiste 923 84 9 Nov 2022 225th postie77 923 84 19 May 2023 225th ertz1ertz 923 84 13 Sep 2024 225th Grabnukebomb 923 84 13 Sep 2024 225th Shanethegamer 🇺🇸 923 84 9 Apr 2025 225th HumanoidCPU 923 84 10 Apr 2025 225th annaproxy 923 84 11 Apr 2025 225th Re-Adventures 🇮🇳 923 84 15 Apr 2025 225th janbehrens 🇩🇪 923 84 17 Apr 2025 225th fuzzylojik-golf 🇺🇸 923 84 28 May 2025 237th sean-niemann 🇺🇸 922 54 6 Aug 2024 237th Steffan153 🇫🇮 922 54 6 Aug 2024 237th lukegustafson 🇺🇸 922 54 7 Aug 2024 237th pardouin 🇫🇷 922 54 8 Aug 2024 237th Lydxn 🇨🇦 922 54 9 Aug 2024 237th JayXon 🇺🇸 922 54 9 Aug 2024 243rd Lydxn 🇨🇦 922 70 17 Oct 2022 243rd JayXon 🇺🇸 922 70 17 Oct 2022 245th ovs-code 🇩🇪 921 60 9 Oct 2023 245th GrayJoKing 🇦🇺 921 60 11 Oct 2023 245th Lydxn 🇨🇦 921 60 11 Oct 2023 245th GolfingSuccess 🇬🇷 921 60 16 Nov 2023 245th Steffan153 🇫🇮 921 60 28 Jan 2024 245th JayXon 🇺🇸 921 60 29 Jan 2024 245th rucin93 🇵🇱 921 60 10 Jul 2024 245th sean-niemann 🇺🇸 921 60 10 Jul 2024 253rd Steffan153 🇫🇮 921 67 19 Aug 2024 253rd JayXon 🇺🇸 921 67 19 Aug 2024 255th Luca2812 921 127 12 Dec 2022 255th plastic-bottle 921 127 13 Sep 2023 255th h3ra993huskp 🇯🇵 921 127 17 Sep 2023 255th tigerdan2 🇩🇪 921 127 19 Dec 2023 255th Apataras 921 127 16 Jul 2025 260th Lydxn 🇨🇦 919 90 6 May 2022 261st Lydxn 🇨🇦 919 107 6 May 2022 261st JayXon 🇺🇸 919 107 9 May 2022 263rd sisyphus-ppcg 🇦🇺 918 50 31 Jan 2023 263rd saito-ta 🇯🇵 918 50 12 Dec 2024 265th uiamn 918 58 6 Sep 2022 265th 5quiwyrm 918 58 29 Sep 2022 265th alasdair-greenland 918 58 13 Jan 2023 265th kirjavascript 918 58 18 days ago 269th sean-niemann 🇺🇸 918 66 29 May 2025 270th Herbert00709 🇵🇱 918 92 17 Nov 2023 270th 4QT0R 918 92 23 Nov 2023 270th ovs-code 🇩🇪 918 92 3 Jun 2024 273rd primo-ppcg 🇹🇭 917 24 10 Dec 2022 274th Irratix 🇳🇱 916 61 7 May 2022 274th TFeld00 🇩🇰 916 61 17 May 2022 274th hallvabo 🇳🇴 916 61 4 Sep 2022 274th DialFrost 🇸🇬 916 61 19 Dec 2022 274th anter69 🇭🇺 916 61 19 Dec 2022 274th Alex-x90 🇺🇸 916 61 27 Dec 2022 274th commandblockguy 🇺🇸 916 61 22 Aug 2023 274th fgrosshans 🇫🇷 916 61 22 Jul 2024 274th duckyluuk 🇳🇱 916 61 15 Aug 2024 274th rucin93 🇵🇱 916 61 31 May 2025 274th fuzzylojik-golf 🇺🇸 916 61 9 Jun 2025 274th katss2 916 61 5 days ago 286th nwellnhof 🇩🇪 915 51 4 May 2022 286th primo-ppcg 🇹🇭 915 51 6 May 2022 286th radarek 🇵🇱 915 51 8 May 2022 286th janlelis 915 51 10 May 2022 286th Natanaelel 🇸🇪 915 51 2 Jun 2022 291st btnlq 915 59 6 Nov 2022 292nd MichalMarsalek 🇨🇿 914 71 5 May 2022 292nd Lydxn 🇨🇦 914 71 7 May 2022 292nd GrayJoKing 🇦🇺 914 71 8 May 2022 292nd JayXon 🇺🇸 914 71 8 May 2022 292nd Steffan153 🇫🇮 914 71 9 Mar 2023 292nd Shanethegamer 🇺🇸 914 71 15 May 2023 292nd MeWhenI 🇻🇦 914 71 8 Aug 2023 292nd sean-niemann 🇺🇸 914 71 9 Jan 2025 300th bac0id 914 128 29 Jun 2024 Prev 226–300 of 3,257 Next