Collatz in all languages in bytes. 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 Hilbert Curve 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 Minesweeper 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 Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Tower of Hanoi 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 Groovy 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 Harbour Hare Haxe Hush Hy iogii Knight Luau 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 Groovy 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 Harbour Hare Haxe Hush Hy iogii Knight Luau 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 Hilbert Curve 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 Minesweeper 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 Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Tower of Hanoi Turtle Tutorial # Golfer Points Bytes Time Submitted 225th JayXon 🇺🇸 930 70 107ms 17 Oct 2022 225th GrayJoKing 🇦🇺 930 70 3ms 13 Jul 2024 225th FlyingPenguin223 930 70 4ms 4 Oct 2024 225th jipsong 🇩🇪 930 70 6ms 5 Apr 2025 230th Natanaelel 🇸🇪 929 28 193ms 22 Jul 2022 230th SirBogman 🇺🇸 929 28 175ms 17 Sep 2022 232nd Steffan153 🇫🇮 929 67 37ms 19 Aug 2024 232nd JayXon 🇺🇸 929 67 53ms 19 Aug 2024 234th sisyphus-ppcg 🇦🇺 928 50 2,856ms 31 Jan 2023 234th saito-ta 🇯🇵 928 50 890ms 12 Dec 2024 236th JayXon 🇺🇸 928 57 136ms 19 Aug 2024 237th roavin 927 84 338ms 23 Jun 2022 237th tkr-sh 🇰🇵 927 84 330ms 20 Aug 2022 237th Nickmiste 927 84 360ms 9 Nov 2022 237th Matgc04 927 84 396ms 19 May 2023 237th postie77 927 84 358ms 19 May 2023 237th ertz1ertz 927 84 364ms 13 Sep 2024 237th Grabnukebomb 927 84 374ms 13 Sep 2024 237th Shanethegamer 🇺🇸 927 84 342ms 9 Apr 2025 237th HumanoidCPU 927 84 370ms 10 Apr 2025 237th annaproxy 927 84 340ms 11 Apr 2025 237th Re-Adventures 🇮🇳 927 84 335ms 15 Apr 2025 237th janbehrens 🇩🇪 927 84 352ms 17 Apr 2025 237th Flix7dev 🇧🇪 927 84 410ms 25 days ago 250th JayXon 🇺🇸 926 105 248ms 4 Oct 2025 250th KasperKivimaeki 🇫🇮 926 105 243ms 4 Oct 2025 252nd edsrzf 🇳🇿 925 54 796ms 13 Sep 2025 252nd CaedenHarper 🇨🇦 925 54 817ms 27 Sep 2025 252nd sean-niemann 🇺🇸 925 54 818ms 27 Sep 2025 252nd albanian-laundromat 925 54 859ms 2 days ago 252nd xsot 🇸🇬 925 54 811ms 24 hours ago 257th ovs-code 🇩🇪 925 67 92ms 13 Dec 2022 257th Steffan153 🇫🇮 925 67 99ms 18 Dec 2022 257th Lydxn 🇨🇦 925 67 105ms 4 Feb 2023 257th sean-niemann 🇺🇸 925 67 107ms 7 Mar 2025 261st Lydxn 🇨🇦 924 90 124ms 6 May 2022 262nd Bubbler-4 923 33 2,581ms 6 May 2022 262nd rak1507 🇬🇧 923 33 113ms 8 May 2022 262nd ngn 🇧🇬 923 33 26ms 11 May 2022 262nd zacjl 923 33 32ms 3 Jun 2025 262nd GrayJoKing 🇦🇺 923 33 14ms 4 Jun 2025 262nd HPWiz 🇳🇿 923 33 9ms 10 hours ago 268th uiamn 923 58 11ms 6 Sep 2022 268th 5quiwyrm 923 58 11ms 29 Sep 2022 268th alasdair-greenland 923 58 10ms 13 Jan 2023 268th kirjavascript 923 58 11ms 4 Aug 2025 268th Posandu 923 58 13ms 26 Aug 2025 268th mrxz 🇳🇱 923 58 10ms 3 Sep 2025 274th btnlq 923 59 8ms 6 Nov 2022 275th JayXon 🇺🇸 923 67 2,389ms 5 hours ago 276th nwellnhof 🇩🇪 922 51 50ms 4 May 2022 276th primo-ppcg 🇹🇭 922 51 43ms 6 May 2022 276th janlelis 922 51 39ms 10 May 2022 276th Natanaelel 🇸🇪 922 51 39ms 2 Jun 2022 280th MichalMarsalek 🇨🇿 922 71 122ms 5 May 2022 280th Lydxn 🇨🇦 922 71 126ms 7 May 2022 280th GrayJoKing 🇦🇺 922 71 129ms 8 May 2022 280th JayXon 🇺🇸 922 71 137ms 8 May 2022 280th Steffan153 🇫🇮 922 71 120ms 9 Mar 2023 280th Shanethegamer 🇺🇸 922 71 128ms 15 May 2023 280th MeWhenI 🇻🇦 922 71 121ms 8 Aug 2023 280th sean-niemann 🇺🇸 922 71 126ms 9 Jan 2025 288th Steffan153 🇫🇮 922 76 11ms 15 May 2023 288th primo-ppcg 🇹🇭 922 76 19ms 15 May 2023 288th Lydxn 🇨🇦 922 76 7ms 22 May 2023 288th GrayJoKing 🇦🇺 922 76 11ms 24 Aug 2023 292nd Herbert00709 🇵🇱 922 92 55ms 17 Nov 2023 292nd 4QT0R 922 92 62ms 23 Nov 2023 292nd ovs-code 🇩🇪 922 92 56ms 3 Jun 2024 295th xnor-gate 919 63 194ms 20 Jan 2025 296th Lydxn 🇨🇦 918 70 96ms 7 May 2022 296th JayXon 🇺🇸 918 70 96ms 7 May 2022 298th pardouin 🇫🇷 918 72 3,105ms 21 May 2025 299th primo-ppcg 🇹🇭 917 61 6ms 6 May 2022 299th sisyphus-ppcg 🇦🇺 917 61 9ms 14 Jul 2022 First Prev 226–300 of 3,469 Next Last