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 70th f-tucker 905 63 35ms 6 Feb 2024 70th JunkIce 905 63 23ms 24 Nov 2024 70th Kowalskiexe 🇵🇱 905 63 20ms 19 Apr 2025 70th 123mjb 905 63 23ms 2 Jun 2025 70th luuumine 🇫🇷 905 63 24ms 12 days ago 81st NerdyMcNerd42 891 64 20ms 26 Oct 2022 81st tpasfieldERAU 891 64 25ms 14 Nov 2022 81st CheeseCake628 🇳🇴 891 64 22ms 6 Jan 2023 81st adamnielson42 🇺🇸 891 64 22ms 25 Apr 2023 81st nathsou 🇫🇷 891 64 21ms 2 Sep 2023 81st zwxzwxzwx21 891 64 24ms 30 Jan 2024 81st steffan-polygolf 891 64 21ms 8 Mar 2024 81st Jacob385 891 64 62ms 4 Apr 2024 81st gallium-gonzollium 891 64 28ms 26 Aug 2024 81st Babafaba 891 64 24ms 7 days ago 91st yzhs 🇩🇪 877 65 20ms 16 Jun 2022 91st rollershutter 877 65 24ms 9 Sep 2022 91st bac0id 877 65 20ms 26 Sep 2023 91st mossiegoat 877 65 23ms 8 Jun 2025 91st RaBa21 🇭🇺 877 65 32ms 11 Jul 2025 91st TransformLikeATensor 877 65 21ms 5 days ago 97th moustave 851 67 21ms 7 Nov 2024 98th Bubbler-4 838 68 14ms 15 Nov 2022 98th neel11235813 838 68 25ms 31 Dec 2022 98th Rubiksmath 838 68 14ms 14 Aug 2023 98th SB-945 838 68 26ms 7 Feb 2024 102nd nwellnhof 🇩🇪 826 69 25ms 4 May 2022 102nd GolfingSuccess 🇬🇷 826 69 18ms 5 May 2022 102nd jared-hughes 826 69 25ms 5 May 2022 102nd sisyphus-ppcg 🇦🇺 826 69 20ms 6 May 2022 102nd lynn 826 69 23ms 22 Aug 2022 102nd AlexanderFair 826 69 29ms 19 Jul 2023 102nd AlephSquirrel 826 69 25ms 30 Dec 2023 102nd davecame 826 69 25ms 20 Aug 2024 102nd salvatore-abello 826 69 27ms 5 Sep 2024 102nd zacjl 826 69 20ms 19 Sep 2024 102nd kops-cg 826 69 24ms 9 Feb 2025 102nd 4atj 826 69 3,790ms 30 Jun 2025 102nd dirckvdende 826 69 16ms 11 Jul 2025 102nd xnor-gate 826 69 16ms 19 Aug 2025 102nd BrunoVisnadi 🇧🇷 826 69 17ms 22 days ago 117th MichalMarsalek 🇨🇿 814 70 19ms 5 May 2022 117th primo-ppcg 🇹🇭 814 70 26ms 5 May 2022 117th prplz 🇦🇺 814 70 17ms 5 May 2022 117th rak1507 🇬🇧 814 70 22ms 7 May 2022 117th inventshah 814 70 19ms 9 May 2022 117th k3w1k0d3r 814 70 19ms 22 Jun 2022 117th Bonjour27891 🇻🇳 814 70 20ms 14 Jul 2022 117th OllieBoyne 🇬🇧 814 70 19ms 19 Jul 2022 117th bricknellj 814 70 22ms 25 Jul 2022 117th wen1now 814 70 20ms 8 Aug 2022 117th 051 🇸🇬 814 70 20ms 8 Aug 2022 117th Sp3000 🇦🇺 814 70 20ms 8 Aug 2022 117th betaveros 814 70 21ms 9 Aug 2022 117th shelerr 814 70 21ms 9 Sep 2022 117th stewSquared 🇺🇸 814 70 21ms 27 Sep 2022 117th myfatemi04 814 70 20ms 4 Nov 2022 117th kevinmchung 814 70 20ms 4 Nov 2022 117th fourth-bit 814 70 18ms 29 Nov 2022 117th aksyristos 814 70 20ms 25 Dec 2022 117th thizanne 814 70 19ms 27 Dec 2022 117th stefangimmillaro 814 70 23ms 6 Feb 2023 117th Seek64 🇩🇪 814 70 18ms 7 Feb 2023 117th FieryIceStickie 814 70 28ms 3 Apr 2023 117th MeWhenI 🇻🇦 814 70 23ms 30 Apr 2023 117th kellantech 814 70 25ms 15 May 2023 117th InigoK 🇺🇸 814 70 20ms 14 Jun 2023 117th quimey 814 70 16ms 15 Jun 2023 117th bizy-coder 814 70 20ms 14 Aug 2023 117th janbehrens 🇩🇪 814 70 33ms 24 Nov 2023 117th namelessiw 814 70 20ms 9 Jan 2024 117th mathisfun271 814 70 25ms 13 Feb 2024 117th ThijsLuttikhuis 814 70 19ms 3 Mar 2024 117th jtaxen 814 70 19ms 1 Apr 2024 117th abc7-12 814 70 29ms 6 May 2024 First Prev 76–150 of 791 Next Last