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 Topological Sort 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 Topological Sort Trinomial Triangle Turtle Tutorial # Golfer Points Chars Time 301st Steffan153 🇫🇮 912 76 15 May 2023 301st primo-ppcg 🇹🇭 912 76 15 May 2023 301st Lydxn 🇨🇦 912 76 22 May 2023 301st GrayJoKing 🇦🇺 912 76 24 Aug 2023 305th arctouch-cristiannevianna 912 85 3 Apr 2023 305th Widgitty 912 85 1 Sep 2023 305th tomtheisen 🇺🇸 912 85 10 Apr 2025 308th Bubbler-4 910 33 6 May 2022 308th rak1507 🇬🇧 910 33 8 May 2022 308th ngn 🇧🇬 910 33 11 May 2022 308th zacjl 910 33 3 Jun 2025 308th GrayJoKing 🇦🇺 910 33 4 Jun 2025 313th primo-ppcg 🇹🇭 910 61 6 May 2022 313th sisyphus-ppcg 🇦🇺 910 61 14 Jul 2022 315th Steffan153 🇫🇮 910 71 10 Dec 2022 315th synt7x 910 71 8 days ago 317th sean-niemann 🇺🇸 910 108 25 May 2024 318th Steffan153 🇫🇮 909 71 14 Oct 2022 318th Shanethegamer 🇺🇸 909 71 15 Oct 2022 318th stefangimmillaro 909 71 16 Oct 2022 318th MeWhenI 🇻🇦 909 71 16 Oct 2022 322nd annaproxy 909 78 13 Jan 2023 322nd IanUtley 909 78 12 Nov 2023 322nd GrayJoKing 🇦🇺 909 78 28 Nov 2023 325th Shanethegamer 🇺🇸 909 86 15 May 2023 325th JayXon 🇺🇸 909 86 15 May 2023 325th Steffan153 🇫🇮 909 86 16 May 2023 325th Lydxn 🇨🇦 909 86 16 May 2023 325th GrayJoKing 🇦🇺 909 86 11 Aug 2023 325th sean-niemann 🇺🇸 909 86 11 Jul 2024 331st Lydxn 🇨🇦 908 47 5 May 2022 332nd Lydxn 🇨🇦 908 70 7 May 2022 332nd JayXon 🇺🇸 908 70 7 May 2022 334th andersk 🇺🇸 908 91 25 Oct 2022 334th Super-Pizza 🇨🇦 908 91 4 Dec 2022 334th klixel 🇨🇦 908 91 20 May 2023 334th lynn 908 91 6 Jul 2024 334th edsrzf 🇳🇿 908 91 29 Nov 2024 334th DialFrost 🇸🇬 908 91 7 Apr 2025 340th tailorspy 908 93 27 May 2024 340th sean-niemann 🇺🇸 908 93 9 Jun 2025 342nd JayXon 🇺🇸 907 53 17 Aug 2024 343rd nai62 907 68 27 Aug 2022 344th cbrt-x 907 129 6 May 2022 344th FlorianCassayre 🇫🇷 907 129 20 Sep 2022 344th piano-miles 907 129 8 Feb 2023 344th Widgitty 907 129 29 May 2023 344th lukashert 907 129 7 Jun 2023 344th DialFrost 🇸🇬 907 129 29 Jan 2024 344th yoshykai 907 129 27 Mar 2025 351st Shanethegamer 🇺🇸 906 61 9 Oct 2023 351st edsrzf 🇳🇿 906 61 12 days ago 353rd pardouin 🇫🇷 906 72 21 May 2025 354th Steffan153 🇫🇮 906 80 11 Dec 2023 355th GrayJoKing 🇦🇺 905 74 1 Nov 2023 356th ovs-code 🇩🇪 905 75 12 Sep 2024 356th Kacarott 🇦🇺 905 75 13 Sep 2024 358th lynn 905 78 5 May 2022 359th Lydxn 🇨🇦 905 81 1 Apr 2023 360th ovs-code 🇩🇪 903 67 13 Dec 2022 360th Steffan153 🇫🇮 903 67 18 Dec 2022 360th Lydxn 🇨🇦 903 67 4 Feb 2023 360th DialFrost 🇸🇬 903 67 17 Mar 2025 364th primo-ppcg 🇹🇭 903 93 7 May 2022 364th AlephSquirrel 903 93 21 Jan 2023 364th kg583 🇺🇸 903 93 26 Dec 2024 364th CLOStrophobic 🇮🇹 903 93 17 Jan 2025 364th edsrzf 🇳🇿 903 93 13 days ago 369th KrausRaus 🇺🇸 902 59 4 May 2022 369th voytxt 🇨🇿 902 59 4 May 2022 369th KingSkyrock 🇺🇸 902 59 18 May 2022 369th ZakkkkAttackkkk 🇵🇭 902 59 14 Jul 2022 369th aksyristos 902 59 28 Oct 2022 369th nstearns96 🇬🇧 902 59 28 Nov 2022 369th janbehrens 🇩🇪 902 59 17 May 2023 Prev 301–375 of 3,171 Next