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 115th 5cw 🇺🇸 814 70 13 Jul 2024 115th lgrandco 814 70 9 Oct 2024 115th snydej 814 70 21 Nov 2024 115th erikji 814 70 4 Feb 2025 115th CutSandstone 814 70 4 Feb 2025 115th xsot 🇸🇬 814 70 3 May 2025 115th smilesformiles3 814 70 14 Jun 2025 115th KasperKivimaeki 🇫🇮 814 70 30 Jun 2025 115th adaGrad1 814 70 10 Aug 2025 115th EthanJantz 814 70 10 Aug 2025 115th qpwoeirut 814 70 10 Aug 2025 115th intgrah 814 70 12 days ago 163rd StefanHabel 🇨🇦 803 71 29 Nov 2022 163rd nstearns96 🇬🇧 803 71 11 Jan 2023 163rd lelbal 803 71 26 Aug 2025 163rd HETHAT 🇩🇿 803 71 12 days ago 167th scpchicken 🇵🇼 792 72 4 May 2022 167th sultan 792 72 6 Jun 2022 167th BlankSpruce 792 72 9 Sep 2022 167th ValentinCassayre 792 72 8 Oct 2022 167th mathb0y512 792 72 1 Dec 2022 167th NoahBolohan 🇨🇦 792 72 28 Feb 2023 167th Kacarott 🇦🇺 792 72 24 Mar 2023 167th Fracture17 792 72 8 Apr 2023 167th ayushdewan 792 72 7 May 2023 167th cingulataluke 792 72 27 Aug 2023 167th PeterTillema 🇳🇱 792 72 17 Oct 2023 167th Glinte 792 72 11 Dec 2023 167th nanatsu8 792 72 11 May 2024 167th thej10n 792 72 12 Jun 2024 167th tobeannouncd 792 72 25 Apr 2025 167th YAJUE114514 792 72 15 Aug 2025 167th blaztoma 🇱🇹 792 72 10 days ago 184th AdamHe17 781 73 31 May 2022 184th AliceFord 781 73 2 Jun 2022 184th Natanaelel 🇸🇪 781 73 16 Jun 2022 184th marcin7Cd 781 73 27 Jun 2022 184th vhoulbreque 🇫🇷 781 73 18 Aug 2022 184th tkr-sh 🇫🇷 781 73 8 Sep 2022 184th jroscoe5 781 73 15 Sep 2022 184th OhmNomNom 781 73 7 Oct 2022 184th 0-4849 781 73 1 Nov 2022 184th M0PKOBKA 781 73 19 Dec 2022 184th calumacutt 781 73 19 Dec 2022 184th thehylian 781 73 2 Jan 2023 184th fynnkroeger 781 73 6 Jan 2023 184th hunt-g 781 73 4 Feb 2023 184th jmerle 🇳🇱 781 73 16 Feb 2023 184th TaserTheFox 🇺🇸 781 73 14 Mar 2023 184th pinguicula 781 73 6 Apr 2023 184th TheoKeller1 781 73 11 Jun 2023 184th Mikey-Beep 🇬🇧 781 73 31 Aug 2023 184th eiburns 781 73 9 Oct 2023 184th htareque 781 73 13 Oct 2023 184th wearsunscreen 781 73 18 Oct 2023 184th bzijlema 🇳🇱 781 73 25 Oct 2023 184th Grrisly 781 73 10 Nov 2023 184th m42km 781 73 11 Nov 2023 184th GeneralPoxter 781 73 7 Dec 2023 184th logvp 781 73 12 Jan 2024 184th JoaoFelipe3 781 73 13 Jan 2024 184th ehulinsky 🇺🇸 781 73 16 Feb 2024 184th Lewenhaupt 781 73 23 Feb 2024 184th stertooy 🇧🇪 781 73 9 Jun 2024 184th jipsong 🇩🇪 781 73 23 Jul 2024 184th mattyhempstead 781 73 6 Oct 2024 184th wh3n3v3r 🇨🇿 781 73 18 Nov 2024 184th klixel 🇨🇦 781 73 18 Nov 2024 184th tjwrenn 781 73 10 Dec 2024 184th nullie 781 73 19 Dec 2024 184th ryyyn 🇺🇸 781 73 7 Jan 2025 184th maxgodfrey2004 🇨🇦 781 73 13 Feb 2025 184th andrewjc2000 781 73 23 Feb 2025 184th Languag3 781 73 27 Feb 2025 184th Bulmenisaurus 781 73 2 Mar 2025 First Prev 151–225 of 784 Next Last