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 751st MeWhenI 🇻🇦 846 26 25 Aug 2022 751st AlephSquirrel 846 26 6 Jan 2023 751st ovs-code 🇩🇪 846 26 5 May 2024 751st saito-ta 🇯🇵 846 26 12 Dec 2024 755th the-zammers 846 68 2 Oct 2023 756th mtirado1 846 74 24 Dec 2022 756th Betuaredead 846 74 6 Jan 2023 756th KatieLG 🇬🇧 846 74 15 Jan 2023 756th bwat2 846 74 31 Mar 2023 756th stackotter 846 74 29 May 2023 756th ovs-code 🇩🇪 846 74 17 Apr 2024 756th madeforlosers 846 74 21 Nov 2024 763rd randolchance 844 63 8 Jan 2023 763rd CatsAreFluffy 844 63 18 Feb 2023 763rd amiralitaheri 844 63 23 Feb 2023 763rd RuyiLi 844 63 1 Apr 2023 763rd TaserTheFox 🇺🇸 844 63 25 May 2023 763rd pfysches-boop 844 63 6 Aug 2023 763rd mhgockel 844 63 19 Aug 2023 763rd NickTheEASDude 🇺🇸 844 63 18 Jan 2024 763rd 823126 844 63 14 Nov 2024 763rd Palladium02 844 63 8 hours ago 773rd NewDefectus 🇮🇱 844 73 6 May 2022 773rd inventshah 844 73 12 Jun 2022 773rd Natanaelel 🇸🇪 844 73 15 Jun 2022 773rd 5quiwyrm 844 73 19 Oct 2022 773rd Herbert00709 🇵🇱 844 73 22 Dec 2023 773rd LorenzoDeGaspari 844 73 27 May 2024 779th bschorno 844 92 12 Oct 2022 779th kellantech 844 92 4 Jul 2023 779th Mezzofloat 844 92 26 Aug 2023 779th Maximizer02 844 92 1 Oct 2023 779th michelebastione 🇮🇹 844 92 22 Dec 2023 779th madeforlosers 844 92 21 Nov 2024 785th Natanaelel 🇸🇪 843 57 17 Jan 2024 785th Kacarott 🇦🇺 843 57 10 Sep 2024 787th retrohun 843 64 6 Nov 2022 787th Re-Adventures 🇮🇳 843 64 7 Nov 2022 787th stellartux 843 64 26 Dec 2023 787th bac0id 843 64 29 Jun 2024 787th snoozingnewt 🇺🇸 843 64 1 Sep 2024 792nd DialFrost 🇸🇬 843 86 15 Dec 2024 793rd Shanethegamer 🇺🇸 843 98 26 Oct 2022 793rd emgordon154 843 98 18 Feb 2025 795th jared-hughes 843 100 20 Jul 2022 795th ZakkkkAttackkkk 🇵🇭 843 100 10 Aug 2022 795th Walter225 843 100 25 Jul 2023 798th krcs 🇵🇱 841 53 9 May 2022 798th ryanlanegit 841 53 19 Jun 2022 798th sisyphus-ppcg 🇦🇺 841 53 15 Aug 2022 801st DialFrost 🇸🇬 841 66 7 Apr 2025 802nd Shanethegamer 🇺🇸 841 82 15 May 2023 803rd lynn 841 96 11 Jul 2023 804th janAkali 🇷🇺 840 77 12 Feb 2025 805th Smetalo 840 139 25 Aug 2022 805th ToxicP1e 840 139 2 Mar 2023 807th error256 838 81 13 Sep 2024 808th Codsilla 🇨🇦 837 51 1 Jul 2022 809th raszpi 🇭🇺 837 77 1 Sep 2023 810th ovs-code 🇩🇪 837 80 23 Oct 2024 810th duckyluuk 🇳🇱 837 80 25 Oct 2024 810th Shanethegamer 🇺🇸 837 80 27 Oct 2024 813th frankgraziano 836 66 22 days ago 814th SirBogman 🇺🇸 836 89 4 May 2022 815th eshilo-draper 835 75 6 Sep 2022 816th Andriamanitra 🇫🇮 835 83 17 Apr 2023 816th Natanaelel 🇸🇪 835 83 8 Jul 2023 818th CatsAreFluffy 835 101 18 Feb 2023 818th annaproxy 835 101 9 May 2023 818th wojtekmal 835 101 15 Nov 2023 818th HumanoidCPU 835 101 6 May 2024 818th eMGeeneer 835 101 27 Jun 2024 818th bac0id 835 101 29 Jun 2024 824th SirBogman 🇺🇸 834 36 5 May 2022 824th HPWiz 🇳🇿 834 36 7 May 2022 Prev 751–825 of 3,022 Next