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 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 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 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 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 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 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 Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial # Golfer Points Chars Time 451st DialFrost 🇸🇬 898 76 3 Aug 2025 452nd kg583 🇺🇸 898 79 30 Jul 2025 453rd michael-pruglo 🇺🇦 898 94 5 Jul 2022 453rd zygoloid 898 94 5 Aug 2024 455th Lydxn 🇨🇦 897 70 7 May 2022 456th MeWhenI 🇻🇦 897 71 20 Aug 2024 457th m-tkach 🇺🇦 897 72 16 Oct 2022 457th GrayJoKing 🇦🇺 897 72 22 Oct 2022 457th emplv 🇱🇻 897 72 27 Oct 2022 457th sean-niemann 🇺🇸 897 72 7 Mar 2025 461st edsrzf 🇳🇿 895 83 14 Jan 2025 461st kg583 🇺🇸 895 83 14 Feb 2025 463rd Lydxn 🇨🇦 894 69 12 Sep 2022 463rd GrayJoKing 🇦🇺 894 69 12 Sep 2022 463rd btnlq 894 69 24 Sep 2022 463rd trinityy-7 894 69 25 days ago 467th Steffan153 🇫🇮 894 82 1 Apr 2023 467th sean-niemann 🇺🇸 894 82 12 Jul 2024 469th emplv 🇱🇻 894 110 5 May 2022 469th Shanethegamer 🇺🇸 894 110 21 Nov 2023 469th edsrzf 🇳🇿 894 110 28 Nov 2024 469th targrik 894 110 30 Jun 2025 473rd SiestaGuru 893 131 9 Jan 2023 473rd HumanoidCPU 893 131 7 May 2024 475th SirBogman 🇺🇸 892 50 5 May 2022 475th nwellnhof 🇩🇪 892 50 3 Jun 2022 475th Lydxn 🇨🇦 892 50 15 Aug 2022 475th Steffan153 🇫🇮 892 50 9 Aug 2024 479th JayXon 🇺🇸 892 149 21 May 2024 480th DialFrost 🇸🇬 891 56 26 hours ago 481st MichalMarsalek 🇨🇿 891 87 5 May 2022 481st Kloppermand 🇩🇰 891 87 7 Oct 2022 481st bwat2 891 87 6 Apr 2023 484th GrayJoKing 🇦🇺 890 91 19 Jan 2023 485th pabloferz 889 48 6 Mar 2024 486th Ripick 889 73 8 May 2023 487th edsrzf 🇳🇿 889 78 26 Oct 2024 488th oeb25 889 93 16 May 2022 488th snobee 🇨🇦 889 93 8 Dec 2022 488th logvp 889 93 2 Jan 2024 488th elgan65536 889 93 5 Mar 2024 488th smartiel 889 93 12 Aug 2024 488th trist224 🇫🇷 889 93 12 Aug 2024 488th nullie 889 93 19 Dec 2024 488th lolgeny 889 93 22 Feb 2025 496th GolfingSuccess 🇬🇷 889 95 5 May 2022 496th Alex-x90 🇺🇸 889 95 4 Dec 2022 496th Mandrzejy 🇵🇱 889 95 22 Mar 2024 499th KatieLG 🇬🇧 888 60 4 May 2022 499th ScottHamper 888 60 5 May 2022 499th Re-Adventures 🇮🇳 888 60 5 May 2022 499th 0x24a537r9 888 60 29 Jul 2022 499th stefangabos 🇷🇴 888 60 19 Aug 2022 499th eranws 888 60 10 Sep 2022 499th GeorgeStechman 🇬🇧 888 60 26 Sep 2022 499th BloodStormKnight 888 60 15 Oct 2022 499th dzshn 888 60 3 Dec 2022 499th biocommando 🇫🇮 888 60 20 Dec 2022 499th Betuaredead 888 60 5 Jan 2023 499th piano-miles 888 60 16 Jan 2023 499th Yewzir 🇧🇪 888 60 12 Feb 2023 499th shellbertt 🇨🇦 888 60 26 Feb 2023 499th zakariamouhid 888 60 20 May 2023 499th raphaelimahorn 888 60 23 Aug 2023 499th jbt 888 60 25 Dec 2023 499th olleicua 🇺🇸 888 60 15 Feb 2024 499th HumanoidCPU 888 60 3 May 2024 499th dokutan 888 60 13 Aug 2024 499th LostSyntax21 🇬🇧 888 60 10 Sep 2024 499th xyangst 888 60 28 Sep 2024 499th a6166231 🇨🇳 888 60 15 May 2025 499th Protothor 888 60 8 Jul 2025 499th SebassNoob 888 60 5 Aug 2025 524th Steffan153 🇫🇮 888 80 15 Nov 2022 524th error256 888 80 8 Apr 2025 Prev 451–525 of 3,272 Next
