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 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 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 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 QR Encoder Quadratic Formula Scrambled Alphabetization Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial # Golfer Points Chars Time 750th Schmitt-Very-Cool 847 138 19 Jul 2024 752nd MeWhenI 🇻🇦 846 26 25 Aug 2022 752nd AlephSquirrel 846 26 6 Jan 2023 752nd ovs-code 🇩🇪 846 26 5 May 2024 752nd saito-ta 🇯🇵 846 26 12 Dec 2024 756th the-zammers 846 68 2 Oct 2023 757th mtirado1 846 74 24 Dec 2022 757th Betuaredead 846 74 6 Jan 2023 757th KatieLG 🇬🇧 846 74 15 Jan 2023 757th bwat2 846 74 31 Mar 2023 757th stackotter 846 74 29 May 2023 757th ovs-code 🇩🇪 846 74 17 Apr 2024 757th madeforlosers 846 74 21 Nov 2024 764th randolchance 844 63 8 Jan 2023 764th CatsAreFluffy 844 63 18 Feb 2023 764th amiralitaheri 844 63 23 Feb 2023 764th RuyiLi 844 63 1 Apr 2023 764th TaserTheFox 🇺🇸 844 63 25 May 2023 764th pfysches-boop 844 63 6 Aug 2023 764th mhgockel 844 63 19 Aug 2023 764th NickTheEASDude 🇺🇸 844 63 18 Jan 2024 764th 823126 844 63 14 Nov 2024 764th Palladium02 844 63 6 days ago 774th NewDefectus 🇮🇱 844 73 6 May 2022 774th inventshah 844 73 12 Jun 2022 774th Natanaelel 🇸🇪 844 73 15 Jun 2022 774th 5quiwyrm 844 73 19 Oct 2022 774th Herbert00709 🇵🇱 844 73 22 Dec 2023 774th LorenzoDeGaspari 844 73 27 May 2024 780th bschorno 844 92 12 Oct 2022 780th kellantech 844 92 4 Jul 2023 780th Mezzofloat 844 92 26 Aug 2023 780th Maximizer02 844 92 1 Oct 2023 780th michelebastione 🇮🇹 844 92 22 Dec 2023 780th madeforlosers 844 92 21 Nov 2024 786th Natanaelel 🇸🇪 843 57 17 Jan 2024 786th Kacarott 🇦🇺 843 57 10 Sep 2024 788th retrohun 843 64 6 Nov 2022 788th Re-Adventures 🇮🇳 843 64 7 Nov 2022 788th stellartux 843 64 26 Dec 2023 788th bac0id 843 64 29 Jun 2024 788th snoozingnewt 🇺🇸 843 64 1 Sep 2024 793rd DialFrost 🇸🇬 843 86 15 Dec 2024 794th Shanethegamer 🇺🇸 843 98 26 Oct 2022 794th emgordon154 843 98 18 Feb 2025 796th jared-hughes 843 100 20 Jul 2022 796th ZakkkkAttackkkk 🇵🇭 843 100 10 Aug 2022 796th Walter225 843 100 25 Jul 2023 799th krcs 🇵🇱 841 53 9 May 2022 799th ryanlanegit 841 53 19 Jun 2022 799th sisyphus-ppcg 🇦🇺 841 53 15 Aug 2022 802nd DialFrost 🇸🇬 841 66 7 Apr 2025 803rd Shanethegamer 🇺🇸 841 82 15 May 2023 804th lynn 841 96 11 Jul 2023 805th janAkali 🇷🇺 840 77 12 Feb 2025 806th Smetalo 840 139 25 Aug 2022 806th ToxicP1e 840 139 2 Mar 2023 808th error256 838 81 13 Sep 2024 809th Codsilla 🇨🇦 837 51 1 Jul 2022 810th raszpi 🇭🇺 837 77 1 Sep 2023 811th ovs-code 🇩🇪 837 80 23 Oct 2024 811th duckyluuk 🇳🇱 837 80 25 Oct 2024 811th Shanethegamer 🇺🇸 837 80 27 Oct 2024 814th frankgraziano 836 66 20 Apr 2025 815th SirBogman 🇺🇸 836 89 4 May 2022 816th eshilo-draper 835 75 6 Sep 2022 817th Andriamanitra 🇫🇮 835 83 17 Apr 2023 817th Natanaelel 🇸🇪 835 83 8 Jul 2023 819th CatsAreFluffy 835 101 18 Feb 2023 819th annaproxy 835 101 9 May 2023 819th wojtekmal 835 101 15 Nov 2023 819th HumanoidCPU 835 101 6 May 2024 819th eMGeeneer 835 101 27 Jun 2024 819th bac0id 835 101 29 Jun 2024 825th SirBogman 🇺🇸 834 36 5 May 2022 Prev 751–825 of 3,025 Next