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 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 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 Mandelbrot 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 Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua 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 Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua 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 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 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 Mandelbrot 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 76th Lydxn 🇨🇦 943 51 17 Jan 2024 77th ovs-code 🇩🇪 943 61 5 Aug 2024 78th Lydxn 🇨🇦 941 59 6 May 2022 79th JayXon 🇺🇸 939 88 17 Oct 2022 80th 2bular 938 32 17 Oct 2024 81st primo-ppcg 🇹🇭 936 49 5 May 2022 81st Lydxn 🇨🇦 936 49 8 May 2022 83rd JayXon 🇺🇸 936 69 17 Oct 2022 83rd Lydxn 🇨🇦 936 69 4 Feb 2023 85th namelessiw 936 83 9 Apr 2025 85th dokutan 936 83 9 Apr 2025 85th m-tkach 🇺🇦 936 83 10 Apr 2025 85th DialFrost 🇸🇬 936 83 10 Apr 2025 85th Pecanolith 936 83 19 Apr 2025 85th Tyrant7 936 83 19 Apr 2025 85th Yax42 🇫🇷 936 83 19 Apr 2025 92nd Lydxn 🇨🇦 935 125 6 May 2022 92nd JayXon 🇺🇸 935 125 9 May 2022 94th saito-ta 🇯🇵 934 49 13 May 2022 94th Lydxn 🇨🇦 934 49 28 May 2022 96th inventshah 934 57 4 May 2022 96th itsh01 934 57 17 May 2022 96th Natanaelel 🇸🇪 934 57 16 Jun 2022 96th Attero 🇸🇪 934 57 3 Aug 2022 96th SirFireball3521 934 57 26 Jan 2023 96th Kacarott 🇦🇺 934 57 24 Mar 2023 96th nathanadams 🇳🇿 934 57 24 Apr 2023 96th hacker112 🇸🇪 934 57 20 Jun 2024 96th thisishowmymindworks 🇳🇴 934 57 28 Jun 2024 96th Salutations45 934 57 18 Nov 2024 106th canissimia 🇦🇶 932 50 5 May 2022 106th ovs-code 🇩🇪 932 50 7 May 2022 106th sisyphus-ppcg 🇦🇺 932 50 20 Feb 2023 106th Steffan153 🇫🇮 932 50 20 Jul 2024 106th sean-niemann 🇺🇸 932 50 10 hours ago 111th ovs-code 🇩🇪 931 60 4 May 2022 111th m-tkach 🇺🇦 931 60 4 May 2022 111th btnlq 931 60 5 May 2022 111th orthoplex 🇨🇽 931 60 9 Oct 2022 111th FlorianCassayre 🇫🇷 931 60 7 Nov 2022 111th SirBogman 🇺🇸 931 60 20 Nov 2022 111th QuincyNash 🇺🇸 931 60 1 Dec 2022 111th Steffan153 🇫🇮 931 60 19 Dec 2022 111th SirFireball3521 931 60 26 Jan 2023 111th Shanethegamer 🇺🇸 931 60 25 May 2023 111th CornerMercury 🇬🇧 931 60 19 Jun 2023 111th ndren 931 60 2 Aug 2023 111th kg583 🇺🇸 931 60 14 Aug 2023 111th Just4FunCoder 931 60 17 Feb 2024 111th HumanoidCPU 931 60 6 May 2024 111th sean-niemann 🇺🇸 931 60 10 Jul 2024 111th pardouin 🇫🇷 931 60 11 Jul 2024 111th dokutan 931 60 15 Aug 2024 111th jatloe 931 60 26 Aug 2024 111th emgordon154 931 60 6 Sep 2024 111th starfihs 931 60 12 Oct 2024 111th CaedenHarper 🇨🇦 931 60 3 Nov 2024 111th 5quiwyrm 931 60 12 Nov 2024 111th plcc0 931 60 26 Mar 2025 111th yujh-yujh 🇬🇸 931 60 28 Mar 2025 111th albanian-laundromat 931 60 12 Apr 2025 111th Mukundan314 931 60 17 Apr 2025 138th canissimia 🇦🇶 930 51 6 May 2022 138th Lydxn 🇨🇦 930 51 6 May 2022 138th primo-ppcg 🇹🇭 930 51 6 May 2022 138th pardouin 🇫🇷 930 51 12 Apr 2025 142nd primo-ppcg 🇹🇭 930 58 13 Nov 2022 142nd clockworknazo 930 58 15 Nov 2022 142nd Lydxn 🇨🇦 930 58 7 Feb 2023 142nd xsot 🇸🇬 930 58 28 Jun 2024 142nd Salutations45 930 58 18 Dec 2024 147th grey0ut 929 48 8 Apr 2025 148th stefangimmillaro 928 126 4 May 2022 148th Irratix 🇳🇱 928 126 4 May 2022 148th MeWhenI 🇻🇦 928 126 4 May 2022 Prev 76–150 of 3,062 Next