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 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 Mandelbrot Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula 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 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 Mandelbrot Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial # Golfer Points Chars Time 817th Palladium02 845 63 12 May 2025 817th 4very 845 63 18 days ago 817th gigaprofisi 🇺🇸 845 63 12 days ago 817th CaedenHarper 🇨🇦 845 63 15 hours ago 830th NewDefectus 🇮🇱 844 73 6 May 2022 830th inventshah 844 73 12 Jun 2022 830th Natanaelel 🇸🇪 844 73 15 Jun 2022 830th Herbert00709 🇵🇱 844 73 22 Dec 2023 830th LorenzoDeGaspari 844 73 27 May 2024 835th jared-hughes 844 100 20 Jul 2022 835th ZakkkkAttackkkk 🇵🇭 844 100 10 Aug 2022 835th Walter225 844 100 25 Jul 2023 838th Natanaelel 🇸🇪 843 57 17 Jan 2024 838th Kacarott 🇦🇺 843 57 10 Sep 2024 840th retrohun 843 64 6 Nov 2022 840th Re-Adventures 🇮🇳 843 64 7 Nov 2022 840th stellartux 843 64 26 Dec 2023 840th bac0id 843 64 29 Jun 2024 840th snoozingnewt 🇺🇸 843 64 1 Sep 2024 845th DialFrost 🇸🇬 843 86 15 Dec 2024 846th Shanethegamer 🇺🇸 843 98 26 Oct 2022 846th emgordon154 843 98 18 Feb 2025 848th bschorno 842 92 12 Oct 2022 848th ChrisTheisen 842 92 14 Dec 2022 848th kellantech 842 92 4 Jul 2023 848th Mezzofloat 842 92 26 Aug 2023 848th Maximizer02 842 92 1 Oct 2023 848th michelebastione 🇮🇹 842 92 22 Dec 2023 848th madeforlosers 842 92 21 Nov 2024 855th krcs 🇵🇱 841 53 9 May 2022 855th ryanlanegit 841 53 19 Jun 2022 855th sisyphus-ppcg 🇦🇺 841 53 15 Aug 2022 858th DialFrost 🇸🇬 841 66 7 Apr 2025 859th Shanethegamer 🇺🇸 841 82 15 May 2023 860th lynn 841 96 11 Jul 2023 861st Smetalo 841 139 25 Aug 2022 861st ToxicP1e 841 139 2 Mar 2023 863rd janAkali 🇷🇺 840 77 12 Feb 2025 864th raszpi 🇭🇺 838 77 1 Sep 2023 865th error256 838 81 13 Sep 2024 866th Codsilla 🇨🇦 837 51 1 Jul 2022 867th frankgraziano 836 66 20 Apr 2025 868th SirBogman 🇺🇸 836 89 4 May 2022 869th CatsAreFluffy 836 101 18 Feb 2023 869th annaproxy 836 101 9 May 2023 869th wojtekmal 836 101 15 Nov 2023 869th HumanoidCPU 836 101 6 May 2024 869th eMGeeneer 836 101 27 Jun 2024 869th bac0id 836 101 29 Jun 2024 875th eshilo-draper 835 75 6 Sep 2022 876th sean-niemann 🇺🇸 835 76 8 Oct 2024 877th Andriamanitra 🇫🇮 835 83 17 Apr 2023 877th Natanaelel 🇸🇪 835 83 8 Jul 2023 879th SirBogman 🇺🇸 834 36 5 May 2022 879th HPWiz 🇳🇿 834 36 7 May 2022 879th Natanaelel 🇸🇪 834 36 15 Jun 2022 879th Steffan153 🇫🇮 834 36 18 Jan 2023 879th codereport 🇨🇦 834 36 1 Jun 2024 879th GolfinK 834 36 21 Nov 2024 879th lifthrasiir 🇰🇷 834 36 1 Dec 2024 879th GolfingSuccess 🇬🇷 834 36 20 Mar 2025 887th scpchicken 🇵🇼 834 55 4 May 2022 887th SirBogman 🇺🇸 834 55 5 May 2022 887th Shanethegamer 🇺🇸 834 55 19 May 2023 887th DialFrost 🇸🇬 834 55 14 Feb 2025 891st inverseLorentz 🇦🇺 834 69 3 Jun 2024 891st CLOStrophobic 🇮🇹 834 69 28 May 2025 893rd ChiefChippy2 833 56 4 May 2022 893rd aksyristos 833 56 29 Jan 2023 893rd anter69 🇭🇺 833 56 12 Feb 2024 893rd 3dm4n 🇫🇮 833 56 11 Mar 2024 893rd lgrandco 833 56 9 Oct 2024 893rd tatzyr 🇯🇵 833 56 10 Dec 2024 899th moustave 833 67 7 Nov 2024 900th Alex-x90 🇺🇸 833 74 4 Dec 2022 Prev 826–900 of 3,137 Next