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 299th klixel 🇨🇦 908 91 20 May 2023 299th lynn 908 91 6 Jul 2024 299th edsrzf 🇳🇿 908 91 29 Nov 2024 299th acotis 908 91 23 Mar 2025 299th DialFrost 🇸🇬 908 91 7 Apr 2025 306th JayXon 🇺🇸 907 53 17 Aug 2024 307th Lydxn 🇨🇦 907 70 7 May 2022 307th JayXon 🇺🇸 907 70 7 May 2022 309th tailorspy 907 93 27 May 2024 310th nai62 906 68 27 Aug 2022 311th pardouin 🇫🇷 906 72 14 days ago 312th Steffan153 🇫🇮 906 80 11 Dec 2023 313th cbrt-x 906 129 6 May 2022 313th FlorianCassayre 🇫🇷 906 129 20 Sep 2022 313th piano-miles 906 129 8 Feb 2023 313th Widgitty 906 129 29 May 2023 313th lukashert 906 129 7 Jun 2023 313th DialFrost 🇸🇬 906 129 29 Jan 2024 313th yoshykai 906 129 27 Mar 2025 320th Shanethegamer 🇺🇸 905 61 9 Oct 2023 321st GrayJoKing 🇦🇺 905 74 1 Nov 2023 322nd ovs-code 🇩🇪 905 75 12 Sep 2024 322nd Kacarott 🇦🇺 905 75 13 Sep 2024 324th lynn 905 78 5 May 2022 325th Lydxn 🇨🇦 904 81 1 Apr 2023 326th krcs 🇵🇱 903 86 10 May 2022 327th primo-ppcg 🇹🇭 903 93 7 May 2022 327th AlephSquirrel 903 93 21 Jan 2023 327th kg583 🇺🇸 903 93 26 Dec 2024 327th CLOStrophobic 🇮🇹 903 93 17 Jan 2025 331st KrausRaus 🇺🇸 902 59 4 May 2022 331st voytxt 🇨🇿 902 59 4 May 2022 331st KingSkyrock 🇺🇸 902 59 18 May 2022 331st ZakkkkAttackkkk 🇵🇭 902 59 14 Jul 2022 331st aksyristos 902 59 28 Oct 2022 331st nstearns96 🇬🇧 902 59 28 Nov 2022 331st janbehrens 🇩🇪 902 59 17 May 2023 331st Shanethegamer 🇺🇸 902 59 25 May 2023 331st Maznek 902 59 26 Jun 2023 331st SpiritAxolotl 🇺🇸 902 59 20 Mar 2024 331st Andrey-Plotnikov 902 59 19 May 2024 331st emgordon154 902 59 5 Aug 2024 331st duckyluuk 🇳🇱 902 59 3 Oct 2024 331st lifthrasiir 🇰🇷 902 59 23 Nov 2024 331st fuzzylojik-golf 🇺🇸 902 59 3 days ago 346th shellbertt 🇨🇦 901 62 4 May 2022 346th ZakkkkAttackkkk 🇵🇭 901 62 5 May 2022 346th annaproxy 901 62 8 Jun 2022 346th bob-th 901 62 9 Jul 2022 346th btjones0 901 62 15 Jul 2022 346th tri1212 🇻🇳 901 62 18 Jul 2022 346th fredrik-bakke 🇳🇴 901 62 5 Oct 2022 346th jakobkordez 🇸🇮 901 62 19 Oct 2022 346th Fishron 901 62 29 Nov 2022 346th KatieLG 🇬🇧 901 62 11 Dec 2022 346th ItsMeNoobieboy 901 62 20 Dec 2022 346th firegene 🇮🇪 901 62 3 Jan 2023 346th packkill 901 62 13 Feb 2023 346th 2011-Chan-Ethan 901 62 9 Jul 2023 346th elgan65536 901 62 18 Nov 2023 346th Dataen 901 62 16 Jan 2024 346th Yewzir 🇧🇪 901 62 5 Apr 2024 346th cuboids 901 62 11 Jul 2024 346th wuzekai518 901 62 26 Jul 2024 346th abhishekg999 901 62 17 Sep 2024 346th lifthrasiir 🇰🇷 901 62 16 Nov 2024 346th Artemis21 🇬🇧 901 62 17 Jan 2025 346th lolgeny 901 62 22 Feb 2025 346th keelimeguy 🇺🇸 901 62 20 days ago 370th ovs-code 🇩🇪 901 67 13 Dec 2022 370th Steffan153 🇫🇮 901 67 18 Dec 2022 370th Lydxn 🇨🇦 901 67 4 Feb 2023 370th DialFrost 🇸🇬 901 67 17 Mar 2025 374th MeWhenI 🇻🇦 901 109 9 Feb 2023 374th CaedenHarper 🇨🇦 901 109 28 Jan 2025 Prev 301–375 of 3,059 Next
