Collatz in all languages in chars. Achievements Cheevos Holes Languages Medals Miscellaneous 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 Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Multitap Input 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 Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang 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 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> ALGOL 68 ArkScript Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang 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 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily 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 Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Multitap Input 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 Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 321st primo-ppcg 🇹🇭 912 61 7ms 6 May 2022 321st sisyphus-ppcg 🇦🇺 912 61 9ms 14 Jul 2022 323rd annaproxy 912 78 112ms 13 Jan 2023 323rd IanUtley 912 78 115ms 12 Nov 2023 323rd GrayJoKing 🇦🇺 912 78 82ms 28 Nov 2023 326th Shanethegamer 🇺🇸 912 86 461ms 15 May 2023 326th JayXon 🇺🇸 912 86 481ms 15 May 2023 326th Steffan153 🇫🇮 912 86 460ms 16 May 2023 326th Lydxn 🇨🇦 912 86 456ms 16 May 2023 326th GrayJoKing 🇦🇺 912 86 461ms 11 Aug 2023 326th sean-niemann 🇺🇸 912 86 468ms 11 Jul 2024 332nd Bubbler-4 911 33 2,528ms 6 May 2022 332nd rak1507 🇬🇧 911 33 108ms 8 May 2022 332nd ngn 🇧🇬 911 33 25ms 11 May 2022 332nd zacjl 911 33 32ms 3 Jun 2025 332nd GrayJoKing 🇦🇺 911 33 13ms 4 Jun 2025 332nd HPWiz 🇳🇿 911 33 9ms 16 Nov 2025 338th Lydxn 🇨🇦 911 70 143ms 7 May 2022 338th JayXon 🇺🇸 911 70 143ms 7 May 2022 340th Steffan153 🇫🇮 911 71 110ms 14 Oct 2022 340th Shanethegamer 🇺🇸 911 71 119ms 15 Oct 2022 340th stefangimmillaro 911 71 111ms 16 Oct 2022 340th MeWhenI 🇻🇦 911 71 116ms 16 Oct 2022 344th andersk 🇺🇸 911 91 139ms 25 Oct 2022 344th Super-Pizza 🇨🇦 911 91 128ms 4 Dec 2022 344th klixel 🇨🇦 911 91 126ms 20 May 2023 344th lynn 911 91 128ms 6 Jul 2024 344th edsrzf 🇳🇿 911 91 126ms 29 Nov 2024 344th DialFrost 🇸🇬 911 91 133ms 7 Apr 2025 344th elgan65536 🇺🇸 911 91 122ms 10 Feb 2026 344th fantaize 911 91 123ms 10 Mar 2026 344th snoozingnewt 🇨🇦 911 91 132ms 3 days ago 353rd tailorspy 911 93 55ms 27 May 2024 353rd sean-niemann 🇺🇸 911 93 60ms 9 Jun 2025 353rd KasperKivimaeki 🇫🇮 911 93 60ms 26 Oct 2025 356th Lydxn 🇨🇦 910 47 257ms 5 May 2022 357th JayXon 🇺🇸 910 53 411ms 17 Aug 2024 358th Lydxn 🇨🇦 910 81 39ms 1 Apr 2023 359th Shanethegamer 🇺🇸 908 61 4ms 9 Oct 2023 360th nai62 908 68 7ms 27 Aug 2022 361st Steffan153 🇫🇮 908 73 68ms 26 Feb 2026 362nd ovs-code 🇩🇪 908 75 67ms 12 Sep 2024 362nd Kacarott 🇦🇺 908 75 62ms 13 Sep 2024 364th sean-niemann 🇺🇸 907 54 138ms 6 Aug 2024 364th Steffan153 🇫🇮 907 54 134ms 6 Aug 2024 364th lukegustafson 🇺🇸 907 54 139ms 7 Aug 2024 364th pardouin 🇫🇷 907 54 145ms 8 Aug 2024 364th Lydxn 🇨🇦 907 54 147ms 9 Aug 2024 369th sean-niemann 🇺🇸 907 66 112ms 29 May 2025 370th lynn 907 78 1,231ms 5 May 2022 371st GrayJoKing 🇦🇺 905 71 321ms 10 Aug 2023 372nd sean-niemann 🇺🇸 905 75 5ms 23 Dec 2025 372nd Steffan153 🇫🇮 905 75 5ms 11 Feb 2026 374th primo-ppcg 🇹🇭 905 93 33ms 7 May 2022 374th AlephSquirrel 905 93 34ms 21 Jan 2023 374th kg583 🇺🇸 905 93 32ms 26 Dec 2024 374th CLOStrophobic 🇮🇹 905 93 49ms 17 Jan 2025 374th edsrzf 🇳🇿 905 93 36ms 3 Jul 2025 379th JayXon 🇺🇸 905 105 291ms 4 Oct 2025 380th KrausRaus 🇺🇸 904 59 12ms 4 May 2022 380th voytxt 🇨🇿 904 59 13ms 4 May 2022 380th KingSkyrock 🇺🇸 904 59 12ms 18 May 2022 380th ZakkkkAttackkkk 🇵🇭 904 59 10ms 14 Jul 2022 380th aksyristos 904 59 11ms 28 Oct 2022 380th nstearns96 🇬🇧 904 59 11ms 28 Nov 2022 380th janbehrens 🇩🇪 904 59 10ms 17 May 2023 380th Shanethegamer 🇺🇸 904 59 10ms 25 May 2023 380th Maznek 904 59 13ms 26 Jun 2023 380th SpiritAxolotl 🇺🇸 904 59 13ms 20 Mar 2024 380th Andrey-Plotnikov 904 59 11ms 19 May 2024 380th emgordon154 904 59 10ms 5 Aug 2024 380th duckyluuk 🇳🇱 904 59 13ms 3 Oct 2024 380th lifthrasiir 🇰🇷 904 59 11ms 23 Nov 2024 380th fuzzylojik-golf 🇺🇸 904 59 13ms 1 Jun 2025 380th acollett89 904 59 13ms 17 Jun 2025 380th iczelia 🇩🇪 904 59 11ms 23 Sep 2025 380th Yax42 🇫🇷 904 59 10ms 20 Jan 2026 380th Protothor 904 59 12ms 12 days ago 399th piano-miles 904 92 411ms 24 Feb 2026 400th edsrzf 🇳🇿 903 72 128ms 3 Jul 2025 First Prev 321–400 of 3,646 Next Last