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 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 Continued Fractions 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 Continued Fractions 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 Chars Time Submitted 596th dranjohn 640 89 20ms 17 Sep 2023 596th ArenaGrenade 640 89 23ms 19 Feb 2024 596th NanduBC 640 89 20ms 6 Sep 2024 596th TheAtrossian 640 89 19ms 5 Jan 2025 596th KimJua41 640 89 19ms 4 May 2025 596th Upload-and-View 🇺🇦 640 89 27ms 20 Aug 2025 607th StoverGitHub 633 90 29ms 16 Jun 2022 607th jamespeilunli 633 90 23ms 4 Jul 2022 607th TrentGlimp 633 90 18ms 3 Sep 2022 607th Ugoran 633 90 20ms 19 Nov 2022 607th PATTRIM 633 90 16ms 5 Jan 2023 607th charliegaming 633 90 19ms 3 Oct 2023 607th lhulinsky 633 90 18ms 22 Oct 2024 607th bthalheim 633 90 21ms 6 Dec 2024 607th SinArieh 633 90 24ms 4 May 2025 607th islptng 633 90 22ms 7 Jul 2025 607th Mr-McChicken 633 90 17ms 4 Oct 2025 618th AbelPelser 626 91 27ms 3 Jul 2022 618th Seis 626 91 20ms 9 Dec 2022 618th r-i-c-e 626 91 18ms 9 Jul 2023 618th joshcors 626 91 19ms 30 Jun 2024 618th resoNathan 626 91 16ms 9 Jul 2024 618th jameswmccarty 626 91 21ms 24 Sep 2024 618th hamilton-bonds 626 91 16ms 12 Nov 2024 618th Wonamm 626 91 26ms 14 Feb 2025 626th TimLeffke 620 92 26ms 17 Aug 2022 626th Rythoka 620 92 15ms 17 Oct 2022 626th UriyaBA 620 92 16ms 19 Mar 2023 626th VladislavGitter 🇪🇸 620 92 20ms 14 Nov 2023 626th ridingqwerty 🇺🇸 620 92 15ms 22 Dec 2023 626th Thonoton 620 92 19ms 1 Feb 2024 626th OCNeve 620 92 18ms 17 Jun 2024 626th themoonisacheese 620 92 22ms 25 Feb 2025 626th BabySharkHi 620 92 20ms 22 Apr 2025 626th arjunarya1 620 92 16ms 28 Aug 2025 626th TJK-S 620 92 19ms 10 Oct 2025 637th Bananapants22 613 93 26ms 4 Sep 2022 637th jaxmattfair 🇺🇸 613 93 18ms 10 Jan 2023 637th fenix-bear 613 93 19ms 18 Nov 2023 637th epic-programmer-guy 613 93 22ms 22 Dec 2023 637th brimstonetrader 613 93 22ms 18 Nov 2024 642nd atazzam 🇺🇸 606 94 17ms 18 May 2022 642nd rohangpta 606 94 16ms 8 Aug 2022 642nd shinylego 606 94 20ms 14 Sep 2022 642nd sgaltair 606 94 20ms 4 Nov 2022 642nd TotoAJ 606 94 17ms 15 Dec 2023 642nd Gusic06 606 94 18ms 6 May 2024 642nd kyleyarwood 606 94 20ms 6 Oct 2024 642nd jj0786-cell 606 94 18ms 1 Apr 2025 642nd griffinschreiber 606 94 19ms 1 Apr 2025 642nd o800 606 94 18ms 6 days ago 652nd felixcroc 600 95 19ms 30 Mar 2023 652nd Pyro569 600 95 18ms 4 Jul 2023 652nd rm-rf-innocence 600 95 19ms 19 Dec 2023 652nd Bit125 600 95 18ms 30 Jan 2024 652nd aalec 600 95 24ms 25 Apr 2024 652nd strogor 600 95 19ms 13 Jun 2025 652nd cthierfelder 🇲🇨 600 95 18ms 17 Jul 2025 652nd ThomasDelepine 600 95 21ms 25 days ago 660th karhuthebear 594 96 23ms 9 May 2022 660th qwjhvbxi 594 96 20ms 6 Feb 2024 660th alfonsoalves 594 96 18ms 21 Jul 2024 660th jeff-re 594 96 14ms 1 Apr 2025 664th a-penton 588 97 19ms 22 Sep 2022 664th jrbud 588 97 18ms 6 Jan 2024 664th befoster 588 97 21ms 22 Feb 2024 664th joshua-el-samalouti 🇩🇪 588 97 18ms 26 May 2024 664th luca1339 588 97 18ms 10 Jun 2024 669th lukemalek 582 98 14ms 10 Oct 2022 669th UltimateGuy0987 582 98 18ms 14 Oct 2022 669th TheLazySquid 582 98 20ms 20 Dec 2022 669th StronkCheese 🇺🇸 582 98 28ms 13 Mar 2023 669th Anthony-Williams-06 582 98 27ms 17 Oct 2023 669th NoneTheFewer 582 98 21ms 17 May 2024 669th abcdhhhh 582 98 14ms 27 Aug 2024 First Prev 601–675 of 805 Next Last