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 JayXon 🇺🇸 913 69 5 Apr 2023 301st Lydxn 🇨🇦 913 69 9 Apr 2023 303rd Steffan153 🇫🇮 912 76 15 May 2023 303rd primo-ppcg 🇹🇭 912 76 15 May 2023 303rd Lydxn 🇨🇦 912 76 22 May 2023 303rd GrayJoKing 🇦🇺 912 76 24 Aug 2023 307th arctouch-cristiannevianna 912 85 3 Apr 2023 307th Widgitty 912 85 1 Sep 2023 307th tomtheisen 🇺🇸 912 85 10 Apr 2025 310th primo-ppcg 🇹🇭 911 61 6 May 2022 310th sisyphus-ppcg 🇦🇺 911 61 14 Jul 2022 312th Steffan153 🇫🇮 911 71 10 Dec 2022 312th synt7x 🇺🇸 911 71 7 Jul 2025 314th Bubbler-4 910 33 6 May 2022 314th rak1507 🇬🇧 910 33 8 May 2022 314th ngn 🇧🇬 910 33 11 May 2022 314th zacjl 910 33 3 Jun 2025 314th GrayJoKing 🇦🇺 910 33 4 Jun 2025 319th Lydxn 🇨🇦 910 70 7 May 2022 319th JayXon 🇺🇸 910 70 7 May 2022 321st annaproxy 910 78 13 Jan 2023 321st IanUtley 910 78 12 Nov 2023 321st GrayJoKing 🇦🇺 910 78 28 Nov 2023 324th sean-niemann 🇺🇸 910 108 25 May 2024 325th Steffan153 🇫🇮 909 71 14 Oct 2022 325th Shanethegamer 🇺🇸 909 71 15 Oct 2022 325th stefangimmillaro 909 71 16 Oct 2022 325th MeWhenI 🇻🇦 909 71 16 Oct 2022 329th edsrzf 🇳🇿 909 78 33 hours ago 330th Shanethegamer 🇺🇸 909 86 15 May 2023 330th JayXon 🇺🇸 909 86 15 May 2023 330th Steffan153 🇫🇮 909 86 16 May 2023 330th Lydxn 🇨🇦 909 86 16 May 2023 330th GrayJoKing 🇦🇺 909 86 11 Aug 2023 330th sean-niemann 🇺🇸 909 86 11 Jul 2024 336th andersk 🇺🇸 909 91 25 Oct 2022 336th Super-Pizza 🇨🇦 909 91 4 Dec 2022 336th klixel 🇨🇦 909 91 20 May 2023 336th lynn 909 91 6 Jul 2024 336th edsrzf 🇳🇿 909 91 29 Nov 2024 336th DialFrost 🇸🇬 909 91 7 Apr 2025 342nd Lydxn 🇨🇦 908 47 5 May 2022 343rd tailorspy 908 93 27 May 2024 343rd sean-niemann 🇺🇸 908 93 9 Jun 2025 345th JayXon 🇺🇸 907 53 17 Aug 2024 346th nai62 907 68 27 Aug 2022 347th cbrt-x 907 129 6 May 2022 347th FlorianCassayre 🇫🇷 907 129 20 Sep 2022 347th piano-miles 907 129 8 Feb 2023 347th Widgitty 907 129 29 May 2023 347th lukashert 907 129 7 Jun 2023 347th DialFrost 🇸🇬 907 129 29 Jan 2024 347th yoshykai 907 129 27 Mar 2025 354th Shanethegamer 🇺🇸 906 61 9 Oct 2023 354th edsrzf 🇳🇿 906 61 4 Jul 2025 356th pardouin 🇫🇷 906 72 21 May 2025 357th GrayJoKing 🇦🇺 906 74 1 Nov 2023 358th ovs-code 🇩🇪 905 75 12 Sep 2024 358th Kacarott 🇦🇺 905 75 13 Sep 2024 360th lynn 905 78 5 May 2022 361st Lydxn 🇨🇦 905 81 1 Apr 2023 362nd ovs-code 🇩🇪 904 67 13 Dec 2022 362nd Steffan153 🇫🇮 904 67 18 Dec 2022 362nd Lydxn 🇨🇦 904 67 4 Feb 2023 362nd DialFrost 🇸🇬 904 67 17 Mar 2025 366th KrausRaus 🇺🇸 903 59 4 May 2022 366th voytxt 🇨🇿 903 59 4 May 2022 366th KingSkyrock 🇺🇸 903 59 18 May 2022 366th ZakkkkAttackkkk 🇵🇭 903 59 14 Jul 2022 366th aksyristos 903 59 28 Oct 2022 366th nstearns96 🇬🇧 903 59 28 Nov 2022 366th janbehrens 🇩🇪 903 59 17 May 2023 366th Shanethegamer 🇺🇸 903 59 25 May 2023 366th Maznek 903 59 26 Jun 2023 366th SpiritAxolotl 🇺🇸 903 59 20 Mar 2024 Prev 301–375 of 3,247 Next