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 450th GrayJoKing 🇦🇺 897 72 22 Oct 2022 450th emplv 🇱🇻 897 72 27 Oct 2022 450th sean-niemann 🇺🇸 897 72 7 Mar 2025 454th edsrzf 🇳🇿 895 83 14 Jan 2025 454th kg583 🇺🇸 895 83 14 Feb 2025 456th MeWhenI 🇻🇦 894 63 5 May 2022 457th Lydxn 🇨🇦 894 69 12 Sep 2022 457th GrayJoKing 🇦🇺 894 69 12 Sep 2022 457th btnlq 894 69 24 Sep 2022 457th trinityy-7 894 69 9 days ago 461st Steffan153 🇫🇮 894 82 1 Apr 2023 461st sean-niemann 🇺🇸 894 82 12 Jul 2024 463rd emplv 🇱🇻 894 110 5 May 2022 463rd Shanethegamer 🇺🇸 894 110 21 Nov 2023 463rd edsrzf 🇳🇿 894 110 28 Nov 2024 463rd targrik 894 110 30 Jun 2025 467th SiestaGuru 893 131 9 Jan 2023 467th HumanoidCPU 893 131 7 May 2024 469th SirBogman 🇺🇸 892 50 5 May 2022 469th nwellnhof 🇩🇪 892 50 3 Jun 2022 469th Lydxn 🇨🇦 892 50 15 Aug 2022 469th Steffan153 🇫🇮 892 50 9 Aug 2024 473rd JayXon 🇺🇸 892 149 21 May 2024 474th MichalMarsalek 🇨🇿 891 87 5 May 2022 474th Kloppermand 🇩🇰 891 87 7 Oct 2022 474th bwat2 891 87 6 Apr 2023 477th GrayJoKing 🇦🇺 890 91 19 Jan 2023 478th pabloferz 889 48 6 Mar 2024 479th Ripick 889 73 8 May 2023 480th edsrzf 🇳🇿 889 78 26 Oct 2024 481st oeb25 889 93 16 May 2022 481st snobee 🇨🇦 889 93 8 Dec 2022 481st logvp 889 93 2 Jan 2024 481st elgan65536 889 93 5 Mar 2024 481st smartiel 889 93 12 Aug 2024 481st trist224 🇫🇷 889 93 12 Aug 2024 481st nullie 889 93 19 Dec 2024 481st lolgeny 889 93 22 Feb 2025 489th GolfingSuccess 🇬🇷 889 95 5 May 2022 489th Alex-x90 🇺🇸 889 95 4 Dec 2022 489th Mandrzejy 🇵🇱 889 95 22 Mar 2024 492nd KatieLG 🇬🇧 888 60 4 May 2022 492nd ScottHamper 888 60 5 May 2022 492nd Re-Adventures 🇮🇳 888 60 5 May 2022 492nd 0x24a537r9 888 60 29 Jul 2022 492nd stefangabos 🇷🇴 888 60 19 Aug 2022 492nd eranws 888 60 10 Sep 2022 492nd GeorgeStechman 🇬🇧 888 60 26 Sep 2022 492nd BloodStormKnight 888 60 15 Oct 2022 492nd dzshn 888 60 3 Dec 2022 492nd biocommando 🇫🇮 888 60 20 Dec 2022 492nd Betuaredead 888 60 5 Jan 2023 492nd piano-miles 888 60 16 Jan 2023 492nd Yewzir 🇧🇪 888 60 12 Feb 2023 492nd shellbertt 🇨🇦 888 60 26 Feb 2023 492nd zakariamouhid 888 60 20 May 2023 492nd raphaelimahorn 888 60 23 Aug 2023 492nd jbt 888 60 25 Dec 2023 492nd olleicua 🇺🇸 888 60 15 Feb 2024 492nd HumanoidCPU 888 60 3 May 2024 492nd dokutan 888 60 13 Aug 2024 492nd LostSyntax21 🇬🇧 888 60 10 Sep 2024 492nd xyangst 888 60 28 Sep 2024 492nd a6166231 🇨🇳 888 60 15 May 2025 492nd Protothor 888 60 8 Jul 2025 492nd SebassNoob 888 60 11 days ago 517th Steffan153 🇫🇮 888 80 15 Nov 2022 517th error256 888 80 8 Apr 2025 519th P-Quentin 🇫🇷 887 63 3 Aug 2022 519th kaptsanovb 887 63 20 Apr 2023 519th fkantelberg 887 63 14 Jul 2023 519th snoozingnewt 🇺🇸 887 63 10 Sep 2023 519th VictorStenvers 🇳🇱 887 63 13 Nov 2023 519th 1231234md5 🇨🇳 887 63 14 Dec 2023 519th f-tucker 887 63 6 Feb 2024 Prev 451–525 of 3,247 Next