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 674th OhmNomNom 865 54 7 Oct 2022 674th olleicua 🇺🇸 865 54 21 Jan 2024 674th LostSyntax21 🇬🇧 865 54 12 Mar 2025 674th AbrahamJLR 🇻🇪 865 54 4 Jun 2025 674th vishal-mohanty 865 54 25 Aug 2025 681st DialFrost 🇸🇬 864 64 10 Jul 2024 682nd MeWhenI 🇻🇦 864 85 27 Jun 2022 682nd Shanethegamer 🇺🇸 864 85 15 May 2023 682nd albanian-laundromat 864 85 25 Aug 2025 685th Grrisly 864 114 25 Mar 2024 686th mtirado1 863 75 13 Aug 2022 687th ovs-code 🇩🇪 863 133 8 Jul 2024 688th GolfingSuccess 🇬🇷 862 57 27 days ago 689th deadp4nda 🇩🇪 862 90 26 Apr 2024 689th 123mjb 862 90 23 Jun 2025 689th michelebastione 🇮🇹 862 90 24 Aug 2025 692nd TylerBloom 862 96 22 Mar 2024 693rd shellbertt 🇨🇦 862 98 9 May 2022 693rd iakolzin 862 98 26 May 2022 693rd Betuaredead 862 98 5 Jan 2023 693rd oceko 862 98 19 Feb 2024 693rd dokutan 862 98 17 Mar 2024 693rd cuzdav 862 98 4 May 2025 693rd timhaj 🇸🇮 862 98 13 days ago 700th steffan-polygolf 861 73 23 Feb 2023 700th MWI-polygolf 861 73 6 Dec 2023 700th HumanoidCPU 861 73 7 May 2024 703rd Steffan153 🇫🇮 861 82 23 Feb 2023 704th GrayJoKing 🇦🇺 860 67 8 Feb 2025 705th JayXon 🇺🇸 860 157 11 days ago 706th GrayJoKing 🇦🇺 859 56 15 Jan 2024 706th AlephSquirrel 859 56 21 Jan 2024 708th Setvizan 859 62 12 Jan 2023 708th GreenBeansAgainstVeganism 859 62 13 Jan 2023 708th arctouch-cristiannevianna 859 62 3 Apr 2023 708th Corxldyphik 859 62 11 Apr 2023 708th Blockyheadman 859 62 1 Nov 2023 708th ollyspooner 859 62 22 Nov 2023 708th itserasmus 859 62 25 Jan 2024 708th Jacob385 859 62 13 Mar 2024 708th junkondo-jp 859 62 30 Jun 2024 708th ShiraJoseph 🇺🇸 859 62 1 Mar 2025 718th yzhs 🇩🇪 859 65 16 Jun 2022 718th rollershutter 859 65 9 Sep 2022 718th bac0id 859 65 26 Sep 2023 718th mossiegoat 859 65 8 Jun 2025 718th RaBa21 🇭🇺 859 65 11 Jul 2025 723rd Andriamanitra 🇫🇮 859 67 26 Apr 2023 724th Steffan153 🇫🇮 859 78 4 Feb 2023 725th ulucs 858 35 8 May 2022 725th bstrat 858 35 6 Jun 2024 725th wh3n3v3r 🇨🇿 858 35 18 Nov 2024 728th JRaspass 🇬🇧 858 41 4 May 2022 728th SirBogman 🇺🇸 858 41 4 May 2022 728th Natanaelel 🇸🇪 858 41 4 May 2022 731st MeWhenI 🇻🇦 858 81 23 May 2023 732nd 5quiwyrm 857 52 4 Sep 2022 732nd MeWhenI 🇻🇦 857 52 28 Jan 2023 732nd Feniske 🇫🇷 857 52 7 Nov 2023 732nd dcgjb 857 52 29 Jan 2024 732nd JPRuskin 🇬🇧 857 52 7 Apr 2025 732nd IISResetMe 857 52 7 Apr 2025 732nd Ripick 857 52 1 Jun 2025 739th jared-hughes 857 72 6 Jul 2022 739th Steffan153 🇫🇮 857 72 3 Jan 2023 739th MeWhenI 🇻🇦 857 72 7 May 2023 739th ListeriaM 857 72 22 Aug 2023 739th larcherMTT 857 72 5 Oct 2024 739th snyderek 🇺🇸 857 72 19 Feb 2025 739th 5quiwyrm 857 72 29 Jun 2025 739th TeodorDyakov 🇧🇬 857 72 8 Jul 2025 739th xiaoyiming123 857 72 12 Jul 2025 748th KatieLG 🇬🇧 857 115 25 Sep 2022 748th emgordon154 857 115 17 Jan 2025 750th MeWhenI 🇻🇦 857 145 28 Mar 2025 Prev 676–750 of 3,327 Next