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 151st canissimia 🇦🇶 931 51 6 May 2022 151st Lydxn 🇨🇦 931 51 6 May 2022 151st primo-ppcg 🇹🇭 931 51 6 May 2022 151st pardouin 🇫🇷 931 51 12 Apr 2025 155th primo-ppcg 🇹🇭 931 58 13 Nov 2022 155th clockworknazo 931 58 15 Nov 2022 155th Lydxn 🇨🇦 931 58 7 Feb 2023 155th xsot 🇸🇬 931 58 28 Jun 2024 155th Salutations45 931 58 18 Dec 2024 160th ovs-code 🇩🇪 931 60 4 May 2022 160th m-tkach 🇺🇦 931 60 4 May 2022 160th btnlq 931 60 5 May 2022 160th orthoplex 🇨🇽 931 60 9 Oct 2022 160th FlorianCassayre 🇫🇷 931 60 7 Nov 2022 160th SirBogman 🇺🇸 931 60 20 Nov 2022 160th QuincyNash 🇺🇸 931 60 1 Dec 2022 160th Steffan153 🇫🇮 931 60 19 Dec 2022 160th SirFireball3521 931 60 26 Jan 2023 160th Shanethegamer 🇺🇸 931 60 25 May 2023 160th CornerMercury 🇬🇧 931 60 19 Jun 2023 160th ndren 931 60 2 Aug 2023 160th kg583 🇺🇸 931 60 14 Aug 2023 160th Just4FunCoder 931 60 17 Feb 2024 160th HumanoidCPU 931 60 6 May 2024 160th sean-niemann 🇺🇸 931 60 10 Jul 2024 160th pardouin 🇫🇷 931 60 11 Jul 2024 160th dokutan 931 60 15 Aug 2024 160th jatloe 931 60 26 Aug 2024 160th emgordon154 931 60 6 Sep 2024 160th starfihs 931 60 12 Oct 2024 160th CaedenHarper 🇨🇦 931 60 3 Nov 2024 160th 5quiwyrm 931 60 12 Nov 2024 160th plcc0 931 60 26 Mar 2025 160th yujh-yujh 🇬🇸 931 60 28 Mar 2025 160th albanian-laundromat 931 60 12 Apr 2025 160th Mukundan314 931 60 17 Apr 2025 160th fuzzylojik-golf 🇺🇸 931 60 1 Sep 2025 188th grey0ut 929 48 8 Apr 2025 189th m-tkach 🇺🇦 929 91 5 May 2022 189th 09cf 929 91 4 Oct 2023 191st emplv 🇱🇻 927 60 5 May 2022 191st GrayJoKing 🇦🇺 927 60 6 May 2022 191st targrik 927 60 24 Dec 2024 191st xsot 🇸🇬 927 60 1 May 2025 195th Lydxn 🇨🇦 926 38 4 May 2022 195th GrayJoKing 🇦🇺 926 38 5 May 2022 195th Steffan153 🇫🇮 926 38 16 Dec 2022 195th ovs-code 🇩🇪 926 38 30 Dec 2023 199th GolfingSuccess 🇬🇷 926 49 12 Aug 2024 199th Shanethegamer 🇺🇸 926 49 12 Aug 2024 199th Steffan153 🇫🇮 926 49 12 Aug 2024 199th MeWhenI 🇻🇦 926 49 13 Aug 2024 199th DialFrost 🇸🇬 926 49 13 Aug 2024 199th GrayJoKing 🇦🇺 926 49 15 Aug 2024 199th btnlq 926 49 16 Aug 2024 199th emgordon154 926 49 19 Aug 2024 199th ovs-code 🇩🇪 926 49 19 Aug 2024 199th mousetail 🇳🇱 926 49 13 Sep 2024 199th lynn 926 49 20 Dec 2024 199th weeble 926 49 20 Dec 2024 199th sean-niemann 🇺🇸 926 49 11 Jan 2025 212th ovs-code 🇩🇪 926 52 16 Jan 2024 212th kg583 🇺🇸 926 52 24 Jan 2024 212th Shanethegamer 🇺🇸 926 52 24 Mar 2024 212th pardouin 🇫🇷 926 52 11 Jul 2024 212th Steffan153 🇫🇮 926 52 17 Aug 2024 212th sean-niemann 🇺🇸 926 52 24 Jan 2025 218th MeWhenI 🇻🇦 925 68 23 Feb 2023 218th JayXon 🇺🇸 925 68 4 Mar 2025 220th Lydxn 🇨🇦 924 70 17 Oct 2022 220th JayXon 🇺🇸 924 70 17 Oct 2022 220th GrayJoKing 🇦🇺 924 70 13 Jul 2024 220th FlyingPenguin223 924 70 4 Oct 2024 220th jipsong 🇩🇪 924 70 5 Apr 2025 225th sean-niemann 🇺🇸 923 54 6 Aug 2024 First Prev 151–225 of 3,375 Next Last