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 Trinomial Triangle 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 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 Trinomial Triangle 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 Turtle Tutorial # Golfer Points Chars Time 676th AlephSquirrel 869 80 20 Apr 2023 676th ashtraypettingzoo 🇺🇸 869 80 1 Apr 2024 678th nwellnhof 🇩🇪 867 53 4 May 2022 678th GrayJoKing 🇦🇺 867 53 6 May 2022 680th dokutan 867 82 1 Jul 2024 681st Shanethegamer 🇺🇸 866 70 12 Dec 2022 681st Alessandro-Balconi 🇮🇹 866 70 26 Dec 2022 683rd dieggsy 866 97 8 Oct 2024 684th Andriamanitra 🇫🇮 865 54 21 Jul 2022 684th jared-hughes 865 54 12 Sep 2022 684th OhmNomNom 865 54 7 Oct 2022 684th olleicua 🇺🇸 865 54 21 Jan 2024 684th LostSyntax21 🇬🇧 865 54 12 Mar 2025 684th AbrahamJLR 🇻🇪 865 54 4 Jun 2025 684th vishal-mohanty 865 54 25 Aug 2025 691st MeWhenI 🇻🇦 865 85 27 Jun 2022 691st Shanethegamer 🇺🇸 865 85 15 May 2023 691st albanian-laundromat 865 85 25 Aug 2025 694th GolfingSuccess 🇬🇷 864 57 29 Aug 2025 695th DialFrost 🇸🇬 864 64 10 Jul 2024 696th JayXon 🇺🇸 864 157 26 days ago 697th mtirado1 863 75 13 Aug 2022 698th ovs-code 🇩🇪 863 133 8 Jul 2024 699th deadp4nda 🇩🇪 862 90 26 Apr 2024 699th 123mjb 862 90 23 Jun 2025 699th michelebastione 🇮🇹 862 90 24 Aug 2025 702nd TylerBloom 862 96 22 Mar 2024 703rd shellbertt 🇨🇦 862 98 9 May 2022 703rd iakolzin 862 98 26 May 2022 703rd Betuaredead 862 98 5 Jan 2023 703rd oceko 862 98 19 Feb 2024 703rd dokutan 862 98 17 Mar 2024 703rd cuzdav 862 98 4 May 2025 703rd timhaj 🇸🇮 862 98 12 Sep 2025 703rd Yax42 🇫🇷 862 98 6 days ago 711th steffan-polygolf 861 73 23 Feb 2023 711th MWI-polygolf 861 73 6 Dec 2023 711th HumanoidCPU 861 73 7 May 2024 714th Steffan153 🇫🇮 861 82 23 Feb 2023 715th yzhs 🇩🇪 860 65 16 Jun 2022 715th rollershutter 860 65 9 Sep 2022 715th bac0id 860 65 26 Sep 2023 715th mossiegoat 860 65 8 Jun 2025 715th RaBa21 🇭🇺 860 65 11 Jul 2025 720th GrayJoKing 🇦🇺 860 67 8 Feb 2025 721st GrayJoKing 🇦🇺 859 56 15 Jan 2024 721st AlephSquirrel 859 56 21 Jan 2024 723rd Setvizan 859 62 12 Jan 2023 723rd GreenBeansAgainstVeganism 859 62 13 Jan 2023 723rd arctouch-cristiannevianna 859 62 3 Apr 2023 723rd Corxldyphik 859 62 11 Apr 2023 723rd Blockyheadman 859 62 1 Nov 2023 723rd ollyspooner 859 62 22 Nov 2023 723rd itserasmus 859 62 25 Jan 2024 723rd Jacob385 859 62 13 Mar 2024 723rd junkondo-jp 859 62 30 Jun 2024 723rd ShiraJoseph 🇺🇸 859 62 1 Mar 2025 733rd Andriamanitra 🇫🇮 859 67 26 Apr 2023 734th Steffan153 🇫🇮 859 78 4 Feb 2023 735th ulucs 858 35 8 May 2022 735th bstrat 858 35 6 Jun 2024 735th wh3n3v3r 🇨🇿 858 35 18 Nov 2024 738th JRaspass 🇬🇧 858 41 4 May 2022 738th SirBogman 🇺🇸 858 41 4 May 2022 738th Natanaelel 🇸🇪 858 41 4 May 2022 741st MeWhenI 🇻🇦 858 81 23 May 2023 742nd 5quiwyrm 857 52 4 Sep 2022 742nd MeWhenI 🇻🇦 857 52 28 Jan 2023 742nd Feniske 🇫🇷 857 52 7 Nov 2023 742nd dcgjb 857 52 29 Jan 2024 742nd JPRuskin 🇬🇧 857 52 7 Apr 2025 742nd IISResetMe 857 52 7 Apr 2025 742nd Ripick 857 52 1 Jun 2025 749th jared-hughes 857 72 6 Jul 2022 749th Steffan153 🇫🇮 857 72 3 Jan 2023 First Prev 676–750 of 3,367 Next Last