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 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 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 QR Encoder Quadratic Formula Scrambled Alphabetization 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 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 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 QR Encoder Quadratic Formula Scrambled Alphabetization Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial # Golfer Points Chars Time 601st Shanethegamer 🇺🇸 871 66 4 May 2022 601st scpchicken 🇵🇼 871 66 5 May 2022 601st sisyphus-ppcg 🇦🇺 871 66 6 May 2022 601st Natanaelel 🇸🇪 871 66 15 Jun 2022 601st Z-snails 871 66 27 Feb 2023 601st Jeremy-Stafford 871 66 27 Feb 2023 601st alomiF 871 66 1 Sep 2023 601st btnlq 871 66 17 Oct 2023 601st sean-niemann 🇺🇸 871 66 9 Jan 2025 610th dokutan 870 62 10 days ago 611th johnnythedoggie 870 72 13 May 2022 612th inventshah 870 97 6 May 2022 612th roupiq 🇵🇱 870 97 22 Nov 2023 614th MeWhenI 🇻🇦 870 207 17 days ago 615th GolfingSuccess 🇬🇷 868 71 5 May 2022 615th emplv 🇱🇻 868 71 5 May 2022 615th JayXon 🇺🇸 868 71 7 May 2022 615th m-tkach 🇺🇦 868 71 15 May 2022 615th nwellnhof 🇩🇪 868 71 5 Jun 2022 615th Irratix 🇳🇱 868 71 13 Jun 2022 615th michael-pruglo 🇺🇦 868 71 13 Jul 2022 615th stefangimmillaro 868 71 2 Jun 2023 615th kkoenig 868 71 21 Dec 2023 615th JohandeRuiter 🇳🇱 868 71 14 Sep 2024 615th masinag 🇮🇹 868 71 6 Oct 2024 615th KasperKivimaeki 🇫🇮 868 71 27 Mar 2025 627th janbehrens 🇩🇪 868 90 21 Apr 2023 627th Yewzir 🇧🇪 868 90 22 Apr 2023 627th DialFrost 🇸🇬 868 90 6 Nov 2023 627th Ripick 868 90 27 Nov 2024 631st AlephSquirrel 867 80 20 Apr 2023 631st ashtraypettingzoo 🇺🇸 867 80 1 Apr 2024 633rd nwellnhof 🇩🇪 866 53 4 May 2022 633rd GrayJoKing 🇦🇺 866 53 6 May 2022 635th DialFrost 🇸🇬 866 86 24 Oct 2024 635th stefangimmillaro 866 86 14 Jan 2025 637th dieggsy 866 97 8 Oct 2024 637th edsrzf 🇳🇿 866 97 8 Dec 2024 639th jacobly0 🇺🇸 866 153 26 Sep 2023 640th lukehewittvandy 865 135 18 Jul 2022 640th OriEy 865 135 27 Apr 2023 640th Maximizer02 865 135 8 Jun 2024 640th 0dyse 865 135 14 days ago 644th Andriamanitra 🇫🇮 863 54 21 Jul 2022 644th jared-hughes 863 54 12 Sep 2022 644th OhmNomNom 863 54 7 Oct 2022 644th olleicua 🇺🇸 863 54 21 Jan 2024 644th LostSyntax21 🇬🇧 863 54 12 Mar 2025 649th DialFrost 🇸🇬 862 64 10 Jul 2024 650th MeWhenI 🇻🇦 862 71 13 Dec 2022 651st deadp4nda 🇩🇪 862 90 26 Apr 2024 652nd mtirado1 861 75 13 Aug 2022 653rd Steffan153 🇫🇮 861 82 23 Feb 2023 654th MeWhenI 🇻🇦 861 85 27 Jun 2022 654th Shanethegamer 🇺🇸 861 85 15 May 2023 656th shellbertt 🇨🇦 861 98 9 May 2022 656th iakolzin 861 98 26 May 2022 656th Betuaredead 861 98 5 Jan 2023 656th oceko 861 98 19 Feb 2024 656th dokutan 861 98 17 Mar 2024 656th cuzdav 861 98 4 days ago 662nd Grrisly 861 114 25 Mar 2024 663rd TylerBloom 860 96 22 Mar 2024 664th MeWhenI 🇻🇦 860 154 10 Oct 2023 665th yzhs 🇩🇪 859 65 16 Jun 2022 665th rollershutter 859 65 9 Sep 2022 665th bac0id 859 65 26 Sep 2023 668th crizin 🇰🇷 859 136 9 Sep 2023 669th GrayJoKing 🇦🇺 858 56 15 Jan 2024 669th AlephSquirrel 858 56 21 Jan 2024 671st Setvizan 858 62 12 Jan 2023 671st GreenBeansAgainstVeganism 858 62 13 Jan 2023 671st arctouch-cristiannevianna 858 62 3 Apr 2023 671st Corxldyphik 858 62 11 Apr 2023 671st Blockyheadman 858 62 1 Nov 2023 Prev 601–675 of 3,015 Next