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 Smooth 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 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 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 Trinomial Triangle Turtle Tutorial # Golfer Points Chars Time 451st michael-pruglo 🇺🇦 899 94 5 Jul 2022 451st zygoloid 899 94 5 Aug 2024 453rd shinh 898 52 29 Jun 2022 453rd MeWhenI 🇻🇦 898 52 25 Jul 2023 455th Lydxn 🇨🇦 898 70 7 May 2022 456th DialFrost 🇸🇬 898 76 3 Aug 2025 457th kg583 🇺🇸 898 79 30 Jul 2025 458th MeWhenI 🇻🇦 897 71 20 Aug 2024 459th m-tkach 🇺🇦 897 72 16 Oct 2022 459th GrayJoKing 🇦🇺 897 72 22 Oct 2022 459th emplv 🇱🇻 897 72 27 Oct 2022 459th sean-niemann 🇺🇸 897 72 7 Mar 2025 463rd Steffan153 🇫🇮 896 82 1 Apr 2023 463rd sean-niemann 🇺🇸 896 82 12 Jul 2024 465th edsrzf 🇳🇿 895 83 14 Jan 2025 465th kg583 🇺🇸 895 83 14 Feb 2025 467th emplv 🇱🇻 895 110 5 May 2022 467th Shanethegamer 🇺🇸 895 110 21 Nov 2023 467th edsrzf 🇳🇿 895 110 28 Nov 2024 467th targrik 895 110 30 Jun 2025 471st Lydxn 🇨🇦 894 69 12 Sep 2022 471st GrayJoKing 🇦🇺 894 69 12 Sep 2022 471st btnlq 894 69 24 Sep 2022 471st trinityy-7 894 69 7 Aug 2025 475th SiestaGuru 894 131 9 Jan 2023 475th HumanoidCPU 894 131 7 May 2024 477th SirBogman 🇺🇸 892 50 5 May 2022 477th nwellnhof 🇩🇪 892 50 3 Jun 2022 477th Lydxn 🇨🇦 892 50 15 Aug 2022 477th Steffan153 🇫🇮 892 50 9 Aug 2024 481st sean-niemann 🇺🇸 892 55 25 days ago 481st albanian-laundromat 892 55 27 hours ago 481st CaedenHarper 🇨🇦 892 55 13 hours ago 484th Lydxn 🇨🇦 891 72 16 Jul 2023 485th MichalMarsalek 🇨🇿 891 87 5 May 2022 485th Kloppermand 🇩🇰 891 87 7 Oct 2022 485th bwat2 891 87 6 Apr 2023 488th edsrzf 🇳🇿 890 78 26 Oct 2024 489th GrayJoKing 🇦🇺 890 91 19 Jan 2023 490th oeb25 890 93 16 May 2022 490th snobee 🇨🇦 890 93 8 Dec 2022 490th logvp 890 93 2 Jan 2024 490th elgan65536 890 93 5 Mar 2024 490th smartiel 890 93 12 Aug 2024 490th trist224 🇫🇷 890 93 12 Aug 2024 490th nullie 890 93 19 Dec 2024 490th lolgeny 890 93 22 Feb 2025 498th pabloferz 889 48 6 Mar 2024 499th Ripick 889 73 8 May 2023 500th GolfingSuccess 🇬🇷 889 95 5 May 2022 500th Alex-x90 🇺🇸 889 95 4 Dec 2022 500th Mandrzejy 🇵🇱 889 95 22 Mar 2024 503rd KatieLG 🇬🇧 888 60 4 May 2022 503rd ScottHamper 888 60 5 May 2022 503rd Re-Adventures 🇮🇳 888 60 5 May 2022 503rd 0x24a537r9 888 60 29 Jul 2022 503rd stefangabos 🇷🇴 888 60 19 Aug 2022 503rd eranws 888 60 10 Sep 2022 503rd GeorgeStechman 🇬🇧 888 60 26 Sep 2022 503rd BloodStormKnight 888 60 15 Oct 2022 503rd dzshn 888 60 3 Dec 2022 503rd biocommando 🇫🇮 888 60 20 Dec 2022 503rd Betuaredead 888 60 5 Jan 2023 503rd piano-miles 888 60 16 Jan 2023 503rd Yewzir 🇧🇪 888 60 12 Feb 2023 503rd shellbertt 🇨🇦 888 60 26 Feb 2023 503rd zakariamouhid 888 60 20 May 2023 503rd raphaelimahorn 888 60 23 Aug 2023 503rd jbt 888 60 25 Dec 2023 503rd olleicua 🇺🇸 888 60 15 Feb 2024 503rd HumanoidCPU 888 60 3 May 2024 503rd dokutan 888 60 13 Aug 2024 503rd LostSyntax21 🇬🇧 888 60 10 Sep 2024 503rd xyangst 888 60 28 Sep 2024 503rd a6166231 🇨🇳 888 60 15 May 2025 Prev 451–525 of 3,307 Next