Collatz in Python 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 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 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 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 Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers 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 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 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 Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 117th ahmetdemirag 🇨🇾 814 70 21ms 9 Jun 2024 117th FranklinJiaChen 814 70 20ms 4 Jul 2024 117th 5cw 🇺🇸 814 70 23ms 13 Jul 2024 117th lgrandco 814 70 20ms 9 Oct 2024 117th snydej 814 70 26ms 21 Nov 2024 117th erikji 814 70 25ms 4 Feb 2025 117th CutSandstone 814 70 23ms 4 Feb 2025 117th xsot 🇸🇬 814 70 22ms 3 May 2025 117th smilesformiles3 814 70 21ms 14 Jun 2025 117th KasperKivimaeki 🇫🇮 814 70 22ms 30 Jun 2025 117th adaGrad1 814 70 20ms 10 Aug 2025 117th EthanJantz 814 70 19ms 10 Aug 2025 117th qpwoeirut 814 70 18ms 10 Aug 2025 117th intgrah 814 70 23ms 23 Sep 2025 165th StefanHabel 🇨🇦 803 71 19ms 29 Nov 2022 165th nstearns96 🇬🇧 803 71 18ms 11 Jan 2023 165th lelbal 803 71 32ms 26 Aug 2025 165th HETHAT 🇩🇿 803 71 26ms 23 Sep 2025 169th scpchicken 🇵🇼 792 72 21ms 4 May 2022 169th sultan 792 72 16ms 6 Jun 2022 169th BlankSpruce 792 72 40ms 9 Sep 2022 169th ValentinCassayre 792 72 21ms 8 Oct 2022 169th mathb0y512 792 72 27ms 1 Dec 2022 169th NoahBolohan 🇨🇦 792 72 23ms 28 Feb 2023 169th Kacarott 🇦🇺 792 72 17ms 24 Mar 2023 169th Fracture17 792 72 21ms 8 Apr 2023 169th ayushdewan 792 72 29ms 7 May 2023 169th cingulataluke 792 72 18ms 27 Aug 2023 169th PeterTillema 🇳🇱 792 72 22ms 17 Oct 2023 169th Glinte 792 72 35ms 11 Dec 2023 169th nanatsu8 792 72 26ms 11 May 2024 169th thej10n 792 72 23ms 12 Jun 2024 169th tobeannouncd 792 72 22ms 25 Apr 2025 169th YAJUE114514 792 72 17ms 15 Aug 2025 169th blaztoma 🇱🇹 792 72 39ms 25 days ago 186th AdamHe17 781 73 20ms 31 May 2022 186th AliceFord 781 73 26ms 2 Jun 2022 186th Natanaelel 🇸🇪 781 73 23ms 16 Jun 2022 186th marcin7Cd 781 73 22ms 27 Jun 2022 186th vhoulbreque 🇫🇷 781 73 20ms 18 Aug 2022 186th tkr-sh 🇫🇷 781 73 25ms 8 Sep 2022 186th jroscoe5 781 73 22ms 15 Sep 2022 186th OhmNomNom 781 73 24ms 7 Oct 2022 186th 0-4849 781 73 21ms 1 Nov 2022 186th M0PKOBKA 781 73 30ms 19 Dec 2022 186th calumacutt 781 73 24ms 19 Dec 2022 186th thehylian 781 73 21ms 2 Jan 2023 186th fynnkroeger 781 73 28ms 6 Jan 2023 186th hunt-g 781 73 22ms 4 Feb 2023 186th jmerle 🇳🇱 781 73 21ms 16 Feb 2023 186th TaserTheFox 🇺🇸 781 73 22ms 14 Mar 2023 186th pinguicula 781 73 19ms 6 Apr 2023 186th TheoKeller1 781 73 28ms 11 Jun 2023 186th Mikey-Beep 🇬🇧 781 73 21ms 31 Aug 2023 186th eiburns 781 73 24ms 9 Oct 2023 186th htareque 781 73 23ms 13 Oct 2023 186th wearsunscreen 781 73 20ms 18 Oct 2023 186th bzijlema 🇳🇱 781 73 21ms 25 Oct 2023 186th Grrisly 781 73 20ms 10 Nov 2023 186th m42km 781 73 25ms 11 Nov 2023 186th GeneralPoxter 781 73 24ms 7 Dec 2023 186th logvp 781 73 23ms 12 Jan 2024 186th JoaoFelipe3 781 73 24ms 13 Jan 2024 186th ehulinsky 🇺🇸 781 73 27ms 16 Feb 2024 186th Lewenhaupt 781 73 20ms 23 Feb 2024 186th stertooy 🇧🇪 781 73 20ms 9 Jun 2024 186th jipsong 🇩🇪 781 73 22ms 23 Jul 2024 186th mattyhempstead 781 73 21ms 6 Oct 2024 186th wh3n3v3r 🇨🇿 781 73 28ms 18 Nov 2024 186th klixel 🇨🇦 781 73 20ms 18 Nov 2024 186th tjwrenn 781 73 22ms 10 Dec 2024 186th nullie 781 73 24ms 19 Dec 2024 186th ryyyn 🇺🇸 781 73 7 Jan 2025 186th maxgodfrey2004 🇨🇦 781 73 33ms 13 Feb 2025 186th andrewjc2000 781 73 33ms 23 Feb 2025 First Prev 151–225 of 791 Next Last