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 Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA 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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 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 524th pbleich 687 83 21ms 24 Aug 2022 524th RoscoeSmith 687 83 23ms 20 Nov 2022 524th amadeusdotpng 687 83 21ms 22 Apr 2023 524th ross-i 687 83 16ms 5 Jul 2023 524th anonymaew 687 83 27ms 2 Aug 2023 524th mstang107 687 83 22ms 20 Dec 2023 524th LHLaurini 🇧🇷 687 83 18ms 26 Jun 2024 524th C0derX3 🇺🇸 687 83 19ms 18 Sep 2024 524th ComputerKWasTaken 🇺🇸 687 83 23ms 20 Jan 2025 524th Vexxter9 🇳🇱 687 83 57ms 4 Feb 2025 524th CodyKlingler 687 83 23ms 7 Feb 2025 524th OyuDays 687 83 18ms 17 Mar 2025 524th julianreece 687 83 22ms 29 Apr 2025 524th rustykitty 🇺🇸 687 83 22ms 23 days ago 540th Feniske 🇫🇷 679 84 18ms 7 Oct 2022 540th Eilonlif 🇮🇱 679 84 22ms 29 Mar 2023 540th mhsaul 679 84 16ms 11 Apr 2023 540th Phyisis 679 84 23ms 30 Apr 2024 540th MaxCastella 🇫🇷 679 84 21ms 11 Oct 2024 540th SURAJMITTAL 679 84 16ms 17 Dec 2024 540th simplylu 679 84 18ms 5 Jan 2025 540th WillowWispy 679 84 21ms 14 Mar 2025 540th VedJosh 679 84 24ms 3 May 2025 540th hetz2625 679 84 23ms 4 May 2025 550th aazuspan 671 85 20ms 15 Jun 2022 550th myleopard 671 85 22ms 20 Jul 2022 550th LukasFolwarczny 🇨🇿 671 85 23ms 16 Sep 2022 550th aaardwark 671 85 26ms 1 Jun 2025 550th kmathis22 671 85 19ms 10 Sep 2025 555th MichaelMBradley 🇨🇦 663 86 22ms 5 Jun 2022 555th Lemonz-13223 663 86 19ms 21 Sep 2022 555th Bodo171 663 86 25ms 24 Nov 2022 555th shibacho 🇯🇵 663 86 19ms 25 Nov 2022 555th Vaekor 663 86 18ms 9 Jul 2023 555th LeoVanderSteege 663 86 16ms 18 Nov 2023 555th Pale-Vessel 663 86 17ms 18 Dec 2023 555th tik25 663 86 33ms 28 Mar 2024 555th willschremmer 663 86 16ms 27 Apr 2024 555th jamiloBBKing 663 86 22ms 27 Jan 2025 555th AsishKunta 663 86 19ms 1 Apr 2025 555th Hemanthred2005 663 86 18ms 1 Apr 2025 555th Voltrifrodec 🇸🇰 663 86 23ms 19 Apr 2025 555th lurey99 663 86 16ms 23 Apr 2025 555th Alban-Boissard 663 86 24ms 14 Jun 2025 555th Arkadios200 663 86 25ms 21 Sep 2025 571st ToE42 655 87 16ms 19 Oct 2022 571st omri2001 655 87 18ms 19 Oct 2022 571st Skallos-s 655 87 22ms 5 Dec 2022 571st damoc1es 655 87 17ms 16 Apr 2023 571st michelebastione 🇮🇹 655 87 24ms 20 Dec 2023 571st clampcorder 655 87 17ms 24 Jan 2024 571st GitQuick 655 87 19ms 23 Feb 2024 571st EricSchraf 655 87 18ms 21 Mar 2024 571st PotatoSaladOverlord 655 87 18ms 21 May 2025 571st Ibozz91 655 87 22ms 8 Jun 2025 571st Aquateraneal 655 87 17ms 2 days ago 582nd Andre3582 648 88 21ms 29 Oct 2022 582nd Darknova2468 648 88 18ms 20 Nov 2022 582nd Solsticely 648 88 20ms 20 Nov 2022 582nd goGuru 648 88 18ms 21 Dec 2022 582nd msbranicky 648 88 35ms 9 Aug 2023 582nd gussy420 648 88 17ms 28 Oct 2023 582nd Shynif 648 88 20ms 21 Feb 2024 582nd asterized 648 88 18ms 24 Aug 2024 582nd hippopotam00sehead 🇨🇦 648 88 19ms 11 Sep 2024 582nd 08jne01 648 88 16ms 21 Nov 2024 582nd davidludwik2370 648 88 18ms 14 Sep 2025 593rd lovernj 640 89 23ms 23 Aug 2022 593rd Roj 640 89 22ms 20 Nov 2022 593rd aeonsablaze 640 89 20ms 22 Nov 2022 593rd buddyw 640 89 16ms 9 Mar 2023 593rd VV1Git 640 89 23ms 28 Mar 2023 593rd dranjohn 640 89 20ms 17 Sep 2023 593rd ArenaGrenade 640 89 23ms 19 Feb 2024 593rd NanduBC 640 89 20ms 6 Sep 2024 First Prev 526–600 of 801 Next Last