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 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 Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua 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 Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua 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 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 300th primo-ppcg 🇹🇭 912 76 15 May 2023 300th Lydxn 🇨🇦 912 76 22 May 2023 300th GrayJoKing 🇦🇺 912 76 24 Aug 2023 304th arctouch-cristiannevianna 912 85 3 Apr 2023 304th Widgitty 912 85 1 Sep 2023 304th tomtheisen 🇺🇸 912 85 10 Apr 2025 307th Bubbler-4 910 33 6 May 2022 307th rak1507 🇬🇧 910 33 8 May 2022 307th ngn 🇧🇬 910 33 11 May 2022 307th zacjl 910 33 3 Jun 2025 307th GrayJoKing 🇦🇺 910 33 4 Jun 2025 312th primo-ppcg 🇹🇭 910 61 6 May 2022 312th sisyphus-ppcg 🇦🇺 910 61 14 Jul 2022 314th Steffan153 🇫🇮 910 71 10 Dec 2022 314th synt7x 910 71 88 mins ago 316th sean-niemann 🇺🇸 910 108 25 May 2024 317th Steffan153 🇫🇮 909 71 14 Oct 2022 317th Shanethegamer 🇺🇸 909 71 15 Oct 2022 317th stefangimmillaro 909 71 16 Oct 2022 317th MeWhenI 🇻🇦 909 71 16 Oct 2022 321st annaproxy 909 78 13 Jan 2023 321st IanUtley 909 78 12 Nov 2023 321st GrayJoKing 🇦🇺 909 78 28 Nov 2023 324th Shanethegamer 🇺🇸 909 86 15 May 2023 324th JayXon 🇺🇸 909 86 15 May 2023 324th Steffan153 🇫🇮 909 86 16 May 2023 324th Lydxn 🇨🇦 909 86 16 May 2023 324th GrayJoKing 🇦🇺 909 86 11 Aug 2023 324th sean-niemann 🇺🇸 909 86 11 Jul 2024 330th Lydxn 🇨🇦 908 47 5 May 2022 331st Lydxn 🇨🇦 908 70 7 May 2022 331st JayXon 🇺🇸 908 70 7 May 2022 333rd andersk 🇺🇸 908 91 25 Oct 2022 333rd Super-Pizza 🇨🇦 908 91 4 Dec 2022 333rd klixel 🇨🇦 908 91 20 May 2023 333rd lynn 908 91 6 Jul 2024 333rd edsrzf 🇳🇿 908 91 29 Nov 2024 333rd DialFrost 🇸🇬 908 91 7 Apr 2025 339th tailorspy 908 93 27 May 2024 339th sean-niemann 🇺🇸 908 93 9 Jun 2025 341st JayXon 🇺🇸 907 53 17 Aug 2024 342nd Shanethegamer 🇺🇸 906 61 9 Oct 2023 342nd edsrzf 🇳🇿 906 61 3 days ago 344th nai62 906 68 27 Aug 2022 345th pardouin 🇫🇷 906 72 21 May 2025 346th Steffan153 🇫🇮 906 80 11 Dec 2023 347th cbrt-x 906 129 6 May 2022 347th FlorianCassayre 🇫🇷 906 129 20 Sep 2022 347th piano-miles 906 129 8 Feb 2023 347th Widgitty 906 129 29 May 2023 347th lukashert 906 129 7 Jun 2023 347th DialFrost 🇸🇬 906 129 29 Jan 2024 347th yoshykai 906 129 27 Mar 2025 354th GrayJoKing 🇦🇺 905 74 1 Nov 2023 355th ovs-code 🇩🇪 905 75 12 Sep 2024 355th Kacarott 🇦🇺 905 75 13 Sep 2024 357th lynn 905 78 5 May 2022 358th Lydxn 🇨🇦 905 81 1 Apr 2023 359th ovs-code 🇩🇪 903 67 13 Dec 2022 359th Steffan153 🇫🇮 903 67 18 Dec 2022 359th Lydxn 🇨🇦 903 67 4 Feb 2023 359th DialFrost 🇸🇬 903 67 17 Mar 2025 363rd primo-ppcg 🇹🇭 903 93 7 May 2022 363rd AlephSquirrel 903 93 21 Jan 2023 363rd kg583 🇺🇸 903 93 26 Dec 2024 363rd CLOStrophobic 🇮🇹 903 93 17 Jan 2025 363rd edsrzf 🇳🇿 903 93 4 days ago 368th KrausRaus 🇺🇸 902 59 4 May 2022 368th voytxt 🇨🇿 902 59 4 May 2022 368th KingSkyrock 🇺🇸 902 59 18 May 2022 368th ZakkkkAttackkkk 🇵🇭 902 59 14 Jul 2022 368th aksyristos 902 59 28 Oct 2022 368th nstearns96 🇬🇧 902 59 28 Nov 2022 368th janbehrens 🇩🇪 902 59 17 May 2023 368th Shanethegamer 🇺🇸 902 59 25 May 2023 Prev 301–375 of 3,154 Next