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 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 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 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 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 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 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 Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial # Golfer Points Chars Time 375th Steffan153 🇫🇮 901 67 18 Dec 2022 375th Lydxn 🇨🇦 901 67 4 Feb 2023 375th DialFrost 🇸🇬 901 67 17 Mar 2025 379th MeWhenI 🇻🇦 901 109 9 Feb 2023 379th CaedenHarper 🇨🇦 901 109 28 Jan 2025 381st Shanethegamer 🇺🇸 900 77 15 May 2023 382nd Betuaredead 899 60 5 Jan 2023 382nd Yewzir 🇧🇪 899 60 12 Feb 2023 382nd Steffan153 🇫🇮 899 60 23 Feb 2023 382nd DialFrost 🇸🇬 899 60 30 Jul 2024 382nd GolfingSuccess 🇬🇷 899 60 16 Oct 2024 382nd sean-niemann 🇺🇸 899 60 7 Mar 2025 388th Lydxn 🇨🇦 899 64 1 Apr 2023 389th bwat2 899 130 5 May 2022 390th GrayJoKing 🇦🇺 898 71 10 Aug 2023 391st Kacarott 🇦🇺 898 79 13 Jun 2024 392nd stefangimmillaro 898 92 24 Oct 2023 392nd inverseLorentz 🇦🇺 898 92 27 May 2024 392nd sean-niemann 🇺🇸 898 92 22 hours ago 395th michael-pruglo 🇺🇦 898 94 5 Jul 2022 395th zygoloid 898 94 5 Aug 2024 397th shinh 897 52 29 Jun 2022 397th MeWhenI 🇻🇦 897 52 25 Jul 2023 397th pardouin 🇫🇷 897 52 12 Apr 2025 400th Shanethegamer 🇺🇸 897 72 4 May 2022 400th jared-hughes 897 72 4 May 2022 400th Waffle3z 897 72 5 May 2022 400th Blendi-Goose 897 72 16 Mar 2025 400th edsrzf 🇳🇿 897 72 12 Apr 2025 405th marshallward 🇺🇸 897 83 10 May 2022 406th m-tkach 🇺🇦 897 90 7 Dec 2023 407th GolfingSuccess 🇬🇷 896 64 14 Dec 2024 407th MeWhenI 🇻🇦 896 64 24 Dec 2024 409th m-tkach 🇺🇦 896 72 16 Oct 2022 409th GrayJoKing 🇦🇺 896 72 22 Oct 2022 409th emplv 🇱🇻 896 72 27 Oct 2022 409th sean-niemann 🇺🇸 896 72 7 Mar 2025 413th DialFrost 🇸🇬 896 77 27 Feb 2025 414th Lydxn 🇨🇦 895 70 7 May 2022 415th Shanethegamer 🇺🇸 895 81 19 Dec 2023 415th edsrzf 🇳🇿 895 81 6 Jan 2025 417th MeWhenI 🇻🇦 894 63 5 May 2022 418th MeWhenI 🇻🇦 894 71 20 Aug 2024 419th Lydxn 🇨🇦 893 69 12 Sep 2022 419th GrayJoKing 🇦🇺 893 69 12 Sep 2022 419th btnlq 893 69 24 Sep 2022 422nd Steffan153 🇫🇮 893 82 1 Apr 2023 422nd sean-niemann 🇺🇸 893 82 12 Jul 2024 424th edsrzf 🇳🇿 893 83 14 Jan 2025 424th kg583 🇺🇸 893 83 14 Feb 2025 426th MichalMarsalek 🇨🇿 893 87 5 May 2022 426th Kloppermand 🇩🇰 893 87 7 Oct 2022 428th emplv 🇱🇻 893 110 5 May 2022 428th Shanethegamer 🇺🇸 893 110 21 Nov 2023 428th edsrzf 🇳🇿 893 110 28 Nov 2024 431st SiestaGuru 892 131 9 Jan 2023 431st HumanoidCPU 892 131 7 May 2024 433rd SirBogman 🇺🇸 891 50 5 May 2022 433rd nwellnhof 🇩🇪 891 50 3 Jun 2022 433rd Lydxn 🇨🇦 891 50 15 Aug 2022 433rd Steffan153 🇫🇮 891 50 9 Aug 2024 437th pabloferz 889 48 6 Mar 2024 438th edsrzf 🇳🇿 889 78 26 Oct 2024 439th oeb25 889 93 16 May 2022 439th snobee 🇨🇦 889 93 8 Dec 2022 439th logvp 889 93 2 Jan 2024 439th elgan65536 889 93 5 Mar 2024 439th smartiel 889 93 12 Aug 2024 439th trist224 🇫🇷 889 93 12 Aug 2024 439th nullie 889 93 19 Dec 2024 439th lolgeny 889 93 22 Feb 2025 447th JayXon 🇺🇸 889 149 21 May 2024 448th GolfingSuccess 🇬🇷 888 95 5 May 2022 448th Alex-x90 🇺🇸 888 95 4 Dec 2022 448th Mandrzejy 🇵🇱 888 95 22 Mar 2024 Prev 376–450 of 3,062 Next