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 Topological Sort 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 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 Knight Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka 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 Knight Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka 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 Topological Sort 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 Trinomial Triangle Turtle Tutorial # Golfer Points Chars Time 301st xnor-gate 913 63 20 Jan 2025 302nd JayXon 🇺🇸 913 69 5 Apr 2023 302nd Lydxn 🇨🇦 913 69 9 Apr 2023 304th Steffan153 🇫🇮 912 76 15 May 2023 304th primo-ppcg 🇹🇭 912 76 15 May 2023 304th Lydxn 🇨🇦 912 76 22 May 2023 304th GrayJoKing 🇦🇺 912 76 24 Aug 2023 308th arctouch-cristiannevianna 912 85 3 Apr 2023 308th Widgitty 912 85 1 Sep 2023 308th tomtheisen 🇺🇸 912 85 10 Apr 2025 311th primo-ppcg 🇹🇭 911 61 6 May 2022 311th sisyphus-ppcg 🇦🇺 911 61 14 Jul 2022 313th Steffan153 🇫🇮 911 71 10 Dec 2022 313th synt7x 🇺🇸 911 71 7 Jul 2025 315th Bubbler-4 910 33 6 May 2022 315th rak1507 🇬🇧 910 33 8 May 2022 315th ngn 🇧🇬 910 33 11 May 2022 315th zacjl 910 33 3 Jun 2025 315th GrayJoKing 🇦🇺 910 33 4 Jun 2025 320th Lydxn 🇨🇦 910 70 7 May 2022 320th JayXon 🇺🇸 910 70 7 May 2022 322nd annaproxy 910 78 13 Jan 2023 322nd IanUtley 910 78 12 Nov 2023 322nd GrayJoKing 🇦🇺 910 78 28 Nov 2023 325th sean-niemann 🇺🇸 910 108 25 May 2024 326th Steffan153 🇫🇮 909 71 14 Oct 2022 326th Shanethegamer 🇺🇸 909 71 15 Oct 2022 326th stefangimmillaro 909 71 16 Oct 2022 326th MeWhenI 🇻🇦 909 71 16 Oct 2022 330th edsrzf 🇳🇿 909 78 6 days ago 331st Shanethegamer 🇺🇸 909 86 15 May 2023 331st JayXon 🇺🇸 909 86 15 May 2023 331st Steffan153 🇫🇮 909 86 16 May 2023 331st Lydxn 🇨🇦 909 86 16 May 2023 331st GrayJoKing 🇦🇺 909 86 11 Aug 2023 331st sean-niemann 🇺🇸 909 86 11 Jul 2024 337th andersk 🇺🇸 909 91 25 Oct 2022 337th Super-Pizza 🇨🇦 909 91 4 Dec 2022 337th klixel 🇨🇦 909 91 20 May 2023 337th lynn 909 91 6 Jul 2024 337th edsrzf 🇳🇿 909 91 29 Nov 2024 337th DialFrost 🇸🇬 909 91 7 Apr 2025 343rd Lydxn 🇨🇦 908 47 5 May 2022 344th tailorspy 908 93 27 May 2024 344th sean-niemann 🇺🇸 908 93 9 Jun 2025 346th JayXon 🇺🇸 907 53 17 Aug 2024 347th nai62 907 68 27 Aug 2022 348th cbrt-x 907 129 6 May 2022 348th FlorianCassayre 🇫🇷 907 129 20 Sep 2022 348th piano-miles 907 129 8 Feb 2023 348th Widgitty 907 129 29 May 2023 348th lukashert 907 129 7 Jun 2023 348th DialFrost 🇸🇬 907 129 29 Jan 2024 348th yoshykai 907 129 27 Mar 2025 355th Shanethegamer 🇺🇸 906 61 9 Oct 2023 355th edsrzf 🇳🇿 906 61 4 Jul 2025 357th pardouin 🇫🇷 906 72 21 May 2025 358th GrayJoKing 🇦🇺 906 74 1 Nov 2023 359th ovs-code 🇩🇪 905 75 12 Sep 2024 359th Kacarott 🇦🇺 905 75 13 Sep 2024 361st lynn 905 78 5 May 2022 362nd Lydxn 🇨🇦 905 81 1 Apr 2023 363rd ovs-code 🇩🇪 904 67 13 Dec 2022 363rd Steffan153 🇫🇮 904 67 18 Dec 2022 363rd Lydxn 🇨🇦 904 67 4 Feb 2023 363rd DialFrost 🇸🇬 904 67 17 Mar 2025 367th KrausRaus 🇺🇸 903 59 4 May 2022 367th voytxt 🇨🇿 903 59 4 May 2022 367th KingSkyrock 🇺🇸 903 59 18 May 2022 367th ZakkkkAttackkkk 🇵🇭 903 59 14 Jul 2022 367th aksyristos 903 59 28 Oct 2022 367th nstearns96 🇬🇧 903 59 28 Nov 2022 367th janbehrens 🇩🇪 903 59 17 May 2023 367th Shanethegamer 🇺🇸 903 59 25 May 2023 367th Maznek 903 59 26 Jun 2023 Prev 301–375 of 3,258 Next