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 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 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 Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Topological Sort 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 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 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 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 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 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 Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Topological Sort Trinomial Triangle Turtle Tutorial # Golfer Points Chars Time 826th randolchance 845 63 8 Jan 2023 826th CatsAreFluffy 845 63 18 Feb 2023 826th amiralitaheri 845 63 23 Feb 2023 826th RuyiLi 845 63 1 Apr 2023 826th TaserTheFox 🇺🇸 845 63 25 May 2023 826th pfysches-boop 845 63 6 Aug 2023 826th mhgockel 845 63 19 Aug 2023 826th NickTheEASDude 🇺🇸 845 63 18 Jan 2024 826th 823126 845 63 14 Nov 2024 826th Palladium02 845 63 12 May 2025 826th 4very 845 63 10 Jun 2025 826th gigaprofisi 🇺🇸 845 63 24 days ago 826th CaedenHarper 🇨🇦 845 63 12 days ago 839th NewDefectus 🇮🇱 845 73 6 May 2022 839th inventshah 845 73 12 Jun 2022 839th Natanaelel 🇸🇪 845 73 15 Jun 2022 839th Herbert00709 🇵🇱 845 73 22 Dec 2023 839th LorenzoDeGaspari 845 73 27 May 2024 844th Shanethegamer 🇺🇸 844 98 26 Oct 2022 844th emgordon154 844 98 18 Feb 2025 846th jared-hughes 844 100 20 Jul 2022 846th ZakkkkAttackkkk 🇵🇭 844 100 10 Aug 2022 846th Walter225 844 100 25 Jul 2023 849th Natanaelel 🇸🇪 843 57 17 Jan 2024 849th Kacarott 🇦🇺 843 57 10 Sep 2024 851st retrohun 843 64 6 Nov 2022 851st Re-Adventures 🇮🇳 843 64 7 Nov 2022 851st stellartux 843 64 26 Dec 2023 851st bac0id 843 64 29 Jun 2024 851st snoozingnewt 🇺🇸 843 64 1 Sep 2024 856th DialFrost 🇸🇬 843 86 15 Dec 2024 857th bschorno 843 92 12 Oct 2022 857th ChrisTheisen 843 92 14 Dec 2022 857th kellantech 843 92 4 Jul 2023 857th Mezzofloat 843 92 26 Aug 2023 857th Maximizer02 843 92 1 Oct 2023 857th michelebastione 🇮🇹 843 92 22 Dec 2023 857th madeforlosers 843 92 21 Nov 2024 864th janAkali 🇷🇺 842 77 12 Feb 2025 865th krcs 🇵🇱 841 53 9 May 2022 865th ryanlanegit 841 53 19 Jun 2022 865th sisyphus-ppcg 🇦🇺 841 53 15 Aug 2022 868th DialFrost 🇸🇬 841 66 7 Apr 2025 869th Shanethegamer 🇺🇸 841 82 15 May 2023 870th lynn 841 96 11 Jul 2023 871st Smetalo 841 139 25 Aug 2022 871st ToxicP1e 841 139 2 Mar 2023 873rd raszpi 🇭🇺 838 77 1 Sep 2023 874th error256 838 81 13 Sep 2024 875th Codsilla 🇨🇦 837 51 1 Jul 2022 876th frankgraziano 837 66 20 Apr 2025 877th eshilo-draper 837 75 6 Sep 2022 878th sean-niemann 🇺🇸 837 76 8 Oct 2024 879th SirBogman 🇺🇸 836 89 4 May 2022 880th CatsAreFluffy 836 101 18 Feb 2023 880th annaproxy 836 101 9 May 2023 880th wojtekmal 836 101 15 Nov 2023 880th HumanoidCPU 836 101 6 May 2024 880th eMGeeneer 836 101 27 Jun 2024 880th bac0id 836 101 29 Jun 2024 886th Andriamanitra 🇫🇮 835 83 17 Apr 2023 886th Natanaelel 🇸🇪 835 83 8 Jul 2023 888th SirBogman 🇺🇸 834 36 5 May 2022 888th HPWiz 🇳🇿 834 36 7 May 2022 888th Natanaelel 🇸🇪 834 36 15 Jun 2022 888th Steffan153 🇫🇮 834 36 18 Jan 2023 888th codereport 🇨🇦 834 36 1 Jun 2024 888th GolfinK 834 36 21 Nov 2024 888th lifthrasiir 🇰🇷 834 36 1 Dec 2024 888th GolfingSuccess 🇬🇷 834 36 20 Mar 2025 896th scpchicken 🇵🇼 834 55 4 May 2022 896th SirBogman 🇺🇸 834 55 5 May 2022 896th Shanethegamer 🇺🇸 834 55 19 May 2023 896th DialFrost 🇸🇬 834 55 14 Feb 2025 900th moustave 834 67 7 Nov 2024 Prev 826–900 of 3,165 Next