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 672nd dokutan 861 98 17 Mar 2024 672nd cuzdav 861 98 4 May 2025 678th MeWhenI 🇻🇦 860 154 10 Oct 2023 679th GrayJoKing 🇦🇺 859 56 15 Jan 2024 679th AlephSquirrel 859 56 21 Jan 2024 681st yzhs 🇩🇪 859 65 16 Jun 2022 681st rollershutter 859 65 9 Sep 2022 681st bac0id 859 65 26 Sep 2023 681st mossiegoat 859 65 26 hours ago 685th ovs-code 🇩🇪 859 133 8 Jul 2024 686th crizin 🇰🇷 859 136 9 Sep 2023 686th TheZwierzLF 🇵🇱 859 136 7 days ago 688th ulucs 858 35 8 May 2022 688th bstrat 858 35 6 Jun 2024 688th wh3n3v3r 🇨🇿 858 35 18 Nov 2024 691st Setvizan 858 62 12 Jan 2023 691st GreenBeansAgainstVeganism 858 62 13 Jan 2023 691st arctouch-cristiannevianna 858 62 3 Apr 2023 691st Corxldyphik 858 62 11 Apr 2023 691st Blockyheadman 858 62 1 Nov 2023 691st ollyspooner 858 62 22 Nov 2023 691st itserasmus 858 62 25 Jan 2024 691st Jacob385 858 62 13 Mar 2024 691st junkondo-jp 858 62 30 Jun 2024 691st ShiraJoseph 🇺🇸 858 62 1 Mar 2025 701st Andriamanitra 🇫🇮 858 67 26 Apr 2023 702nd steffan-polygolf 858 73 23 Feb 2023 702nd MWI-polygolf 858 73 6 Dec 2023 702nd HumanoidCPU 858 73 7 May 2024 705th Steffan153 🇫🇮 858 78 4 Feb 2023 706th 5quiwyrm 857 52 4 Sep 2022 706th MeWhenI 🇻🇦 857 52 28 Jan 2023 706th Feniske 🇫🇷 857 52 7 Nov 2023 706th dcgjb 857 52 29 Jan 2024 706th JPRuskin 🇬🇧 857 52 7 Apr 2025 706th IISResetMe 857 52 7 Apr 2025 706th Ripick 857 52 8 days ago 713th JRaspass 🇬🇧 856 41 4 May 2022 713th SirBogman 🇺🇸 856 41 4 May 2022 713th Natanaelel 🇸🇪 856 41 4 May 2022 716th GrayJoKing 🇦🇺 856 67 8 Feb 2025 717th jared-hughes 856 72 6 Jul 2022 717th Steffan153 🇫🇮 856 72 3 Jan 2023 717th MeWhenI 🇻🇦 856 72 7 May 2023 717th ListeriaM 856 72 22 Aug 2023 717th larcherMTT 856 72 5 Oct 2024 717th snyderek 🇺🇸 856 72 19 Feb 2025 723rd MeWhenI 🇻🇦 856 81 23 May 2023 724th ovs-code 🇩🇪 854 83 1 Jul 2024 725th KatieLG 🇬🇧 854 115 25 Sep 2022 725th emgordon154 854 115 17 Jan 2025 727th MeWhenI 🇻🇦 854 145 28 Mar 2025 728th DialFrost 🇸🇬 853 50 24 Oct 2023 729th eshilo-draper 853 91 4 Sep 2022 729th ericlangedijk 🇸🇮 853 91 23 May 2023 729th KatieLG 🇬🇧 853 91 30 Apr 2024 729th Mikey-Beep 🇬🇧 853 91 3 Sep 2024 733rd eshilo-draper 853 137 4 Sep 2022 734th ovs-code 🇩🇪 852 85 11 Dec 2023 735th yeminghan2021 852 99 3 Feb 2025 736th Shanethegamer 🇺🇸 851 83 4 May 2022 737th 386asm 🇺🇸 851 86 9 Apr 2023 738th Frowny 850 38 5 May 2022 738th stackofbears 850 38 14 Mar 2025 740th o0lit3 🇺🇸 850 54 22 Jun 2023 740th Natanaelel 🇸🇪 850 54 10 Feb 2025 742nd MeWhenI 🇻🇦 850 71 13 Dec 2022 743rd typeswitch-dev 🇵🇹 850 75 22 Jul 2023 744th frosster 850 76 12 May 2023 744th kyleclaassen 850 76 20 May 2023 744th RockOfStone 850 76 17 Mar 2024 744th NickTheEASDude 🇺🇸 850 76 7 May 2024 744th Antibrain0 850 76 8 Nov 2024 749th MeWhenI 🇻🇦 850 92 10 Oct 2022 749th Betuaredead 850 92 5 Jan 2023 Prev 676–750 of 3,062 Next