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 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 QR Encoder Quadratic Formula Scrambled Alphabetization 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 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 QR Encoder Quadratic Formula Scrambled Alphabetization Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial # Golfer Points Chars Time 76th JayXon 🇺🇸 939 88 17 Oct 2022 77th 2bular 938 32 17 Oct 2024 78th primo-ppcg 🇹🇭 936 49 5 May 2022 78th Lydxn 🇨🇦 936 49 8 May 2022 80th JayXon 🇺🇸 936 69 17 Oct 2022 80th Lydxn 🇨🇦 936 69 4 Feb 2023 82nd namelessiw 935 83 9 Apr 2025 82nd dokutan 935 83 9 Apr 2025 82nd m-tkach 🇺🇦 935 83 10 Apr 2025 82nd DialFrost 🇸🇬 935 83 10 Apr 2025 82nd Pecanolith 935 83 19 Apr 2025 82nd Tyrant7 935 83 19 Apr 2025 82nd Yax42 🇫🇷 935 83 19 Apr 2025 89th Lydxn 🇨🇦 935 125 6 May 2022 89th JayXon 🇺🇸 935 125 9 May 2022 91st saito-ta 🇯🇵 934 49 13 May 2022 91st Lydxn 🇨🇦 934 49 28 May 2022 93rd inventshah 934 57 4 May 2022 93rd itsh01 934 57 17 May 2022 93rd Natanaelel 🇸🇪 934 57 16 Jun 2022 93rd Attero 🇸🇪 934 57 3 Aug 2022 93rd SirFireball3521 934 57 26 Jan 2023 93rd Kacarott 🇦🇺 934 57 24 Mar 2023 93rd nathanadams 🇳🇿 934 57 24 Apr 2023 93rd hacker112 🇸🇪 934 57 20 Jun 2024 93rd thisishowmymindworks 🇳🇴 934 57 28 Jun 2024 93rd Salutations45 934 57 18 Nov 2024 103rd canissimia 🇦🇶 932 50 5 May 2022 103rd ovs-code 🇩🇪 932 50 7 May 2022 103rd sisyphus-ppcg 🇦🇺 932 50 20 Feb 2023 103rd Steffan153 🇫🇮 932 50 20 Jul 2024 107th ovs-code 🇩🇪 931 60 4 May 2022 107th m-tkach 🇺🇦 931 60 4 May 2022 107th btnlq 931 60 5 May 2022 107th orthoplex 🇨🇽 931 60 9 Oct 2022 107th FlorianCassayre 🇫🇷 931 60 7 Nov 2022 107th SirBogman 🇺🇸 931 60 20 Nov 2022 107th QuincyNash 🇺🇸 931 60 1 Dec 2022 107th Steffan153 🇫🇮 931 60 19 Dec 2022 107th SirFireball3521 931 60 26 Jan 2023 107th Shanethegamer 🇺🇸 931 60 25 May 2023 107th CornerMercury 🇬🇧 931 60 19 Jun 2023 107th ndren 931 60 2 Aug 2023 107th kg583 🇺🇸 931 60 14 Aug 2023 107th Just4FunCoder 931 60 17 Feb 2024 107th HumanoidCPU 931 60 6 May 2024 107th sean-niemann 🇺🇸 931 60 10 Jul 2024 107th pardouin 🇫🇷 931 60 11 Jul 2024 107th dokutan 931 60 15 Aug 2024 107th jatloe 931 60 26 Aug 2024 107th emgordon154 931 60 6 Sep 2024 107th starfihs 931 60 12 Oct 2024 107th CaedenHarper 🇨🇦 931 60 3 Nov 2024 107th 5quiwyrm 931 60 12 Nov 2024 107th plcc0 931 60 26 Mar 2025 107th yujh-yujh 🇬🇸 931 60 28 Mar 2025 107th albanian-laundromat 931 60 12 Apr 2025 107th Mukundan314 931 60 17 Apr 2025 134th canissimia 🇦🇶 930 51 6 May 2022 134th Lydxn 🇨🇦 930 51 6 May 2022 134th primo-ppcg 🇹🇭 930 51 6 May 2022 134th pardouin 🇫🇷 930 51 12 Apr 2025 138th primo-ppcg 🇹🇭 930 58 13 Nov 2022 138th clockworknazo 930 58 15 Nov 2022 138th Lydxn 🇨🇦 930 58 7 Feb 2023 138th xsot 🇸🇬 930 58 28 Jun 2024 138th Salutations45 930 58 18 Dec 2024 143rd grey0ut 928 48 8 Apr 2025 144th m-tkach 🇺🇦 927 91 5 May 2022 144th catfish000 927 91 4 Oct 2023 146th stefangimmillaro 927 126 4 May 2022 146th Irratix 🇳🇱 927 126 4 May 2022 146th MeWhenI 🇻🇦 927 126 4 May 2022 146th janbehrens 🇩🇪 927 126 4 May 2022 146th shellbertt 🇨🇦 927 126 4 May 2022 Prev 76–150 of 3,048 Next