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 449th CaedenHarper 🇨🇦 892 55 2 days ago 452nd Lydxn 🇨🇦 891 72 16 Jul 2023 453rd MichalMarsalek 🇨🇿 891 87 5 May 2022 453rd Kloppermand 🇩🇰 891 87 7 Oct 2022 453rd bwat2 891 87 6 Apr 2023 456th edsrzf 🇳🇿 890 78 26 Oct 2024 457th GrayJoKing 🇦🇺 890 91 19 Jan 2023 458th oeb25 890 93 16 May 2022 458th snobee 🇨🇦 890 93 8 Dec 2022 458th logvp 890 93 2 Jan 2024 458th elgan65536 890 93 5 Mar 2024 458th smartiel 890 93 12 Aug 2024 458th trist224 🇫🇷 890 93 12 Aug 2024 458th nullie 890 93 19 Dec 2024 458th lolgeny 890 93 22 Feb 2025 466th pabloferz 889 48 6 Mar 2024 467th Ripick 889 73 8 May 2023 468th GolfingSuccess 🇬🇷 889 95 5 May 2022 468th Alex-x90 🇺🇸 889 95 4 Dec 2022 468th Mandrzejy 🇵🇱 889 95 22 Mar 2024 471st KatieLG 🇬🇧 888 60 4 May 2022 471st ScottHamper 888 60 5 May 2022 471st Re-Adventures 🇮🇳 888 60 5 May 2022 471st 0x24a537r9 888 60 29 Jul 2022 471st stefangabos 🇷🇴 888 60 19 Aug 2022 471st eranws 888 60 10 Sep 2022 471st GeorgeStechman 🇬🇧 888 60 26 Sep 2022 471st BloodStormKnight 888 60 15 Oct 2022 471st dzshn 888 60 3 Dec 2022 471st biocommando 🇫🇮 888 60 20 Dec 2022 471st Betuaredead 888 60 5 Jan 2023 471st piano-miles 888 60 16 Jan 2023 471st Yewzir 🇧🇪 888 60 12 Feb 2023 471st shellbertt 🇨🇦 888 60 26 Feb 2023 471st zakariamouhid 888 60 20 May 2023 471st raphaelimahorn 888 60 23 Aug 2023 471st jbt 888 60 25 Dec 2023 471st olleicua 🇺🇸 888 60 15 Feb 2024 471st HumanoidCPU 888 60 3 May 2024 471st dokutan 888 60 13 Aug 2024 471st LostSyntax21 🇬🇧 888 60 10 Sep 2024 471st xyangst 888 60 28 Sep 2024 471st a6166231 🇨🇳 888 60 15 May 2025 471st Protothor 888 60 8 Jul 2025 471st SebassNoob 888 60 5 Aug 2025 471st Yax42 🇫🇷 888 60 19 days ago 497th Steffan153 🇫🇮 888 80 15 Nov 2022 497th Steffan153 🇫🇮 888 80 11 Dec 2023 497th error256 888 80 8 Apr 2025 500th P-Quentin 🇫🇷 887 63 3 Aug 2022 500th kaptsanovb 887 63 20 Apr 2023 500th fkantelberg 887 63 14 Jul 2023 500th snoozingnewt 🇺🇸 887 63 10 Sep 2023 500th VictorStenvers 🇳🇱 887 63 13 Nov 2023 500th 1231234md5 🇨🇳 887 63 14 Dec 2023 500th f-tucker 887 63 6 Feb 2024 500th JunkIce 887 63 24 Nov 2024 500th Kowalskiexe 🇵🇱 887 63 19 Apr 2025 500th 123mjb 887 63 2 Jun 2025 510th nwellnhof 🇩🇪 887 111 4 May 2022 510th stefangimmillaro 887 111 26 Sep 2023 510th kkoenig 887 111 4 Jan 2024 513th stefangimmillaro 886 71 2 Oct 2022 513th Steffan153 🇫🇮 886 71 23 Feb 2023 513th Shanethegamer 🇺🇸 886 71 16 May 2023 513th sean-niemann 🇺🇸 886 71 12 Jul 2024 517th sean-niemann 🇺🇸 886 73 12 Jul 2024 518th canissimia 🇦🇶 886 110 20 Feb 2023 519th m-tkach 🇺🇦 886 117 7 May 2022 519th Lydxn 🇨🇦 886 117 7 May 2022 521st canissimia 🇦🇶 886 204 25 Nov 2023 522nd Shanethegamer 🇺🇸 885 61 31 Oct 2022 522nd MeWhenI 🇻🇦 885 61 4 Nov 2022 524th lynn 885 65 5 May 2022 524th GrayJoKing 🇦🇺 885 65 5 May 2022 Prev 451–525 of 3,319 Next
