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 522nd amadeusdotpng 687 83 27ms 22 Apr 2023 522nd ross-i 687 83 17ms 5 Jul 2023 522nd anonymaew 687 83 31ms 2 Aug 2023 522nd mstang107 687 83 24ms 20 Dec 2023 522nd LHLaurini 🇧🇷 687 83 25ms 26 Jun 2024 522nd C0derX3 🇺🇸 687 83 21ms 18 Sep 2024 522nd ComputerKWasTaken 🇺🇸 687 83 27ms 20 Jan 2025 522nd Vexxter9 🇳🇱 687 83 71ms 4 Feb 2025 522nd CodyKlingler 687 83 24ms 7 Feb 2025 522nd OyuDays 687 83 19ms 17 Mar 2025 522nd julianreece 687 83 22ms 29 Apr 2025 522nd rustykitty 🇺🇸 687 83 20ms 21 days ago 538th Feniske 🇫🇷 679 84 23ms 7 Oct 2022 538th Eilonlif 🇮🇱 679 84 30ms 29 Mar 2023 538th mhsaul 679 84 17ms 11 Apr 2023 538th Phyisis 679 84 20ms 30 Apr 2024 538th MaxCastella 🇫🇷 679 84 23ms 11 Oct 2024 538th SURAJMITTAL 679 84 27ms 17 Dec 2024 538th simplylu 679 84 20ms 5 Jan 2025 538th WillowWispy 679 84 20ms 14 Mar 2025 538th VedJosh 679 84 25ms 3 May 2025 538th hetz2625 679 84 22ms 4 May 2025 548th aazuspan 671 85 20ms 15 Jun 2022 548th myleopard 671 85 22ms 20 Jul 2022 548th LukasFolwarczny 🇨🇿 671 85 30ms 16 Sep 2022 548th aaardwark 671 85 23ms 1 Jun 2025 548th kmathis22 671 85 20ms 10 Sep 2025 553rd MichaelMBradley 🇨🇦 663 86 24ms 5 Jun 2022 553rd Lemonz-13223 663 86 27ms 21 Sep 2022 553rd Bodo171 663 86 24ms 24 Nov 2022 553rd shibacho 🇯🇵 663 86 19ms 25 Nov 2022 553rd Vaekor 663 86 21ms 9 Jul 2023 553rd LeoVanderSteege 663 86 17ms 18 Nov 2023 553rd Pale-Vessel 663 86 20ms 18 Dec 2023 553rd tik25 663 86 25ms 28 Mar 2024 553rd willschremmer 663 86 18ms 27 Apr 2024 553rd jamiloBBKing 663 86 24ms 27 Jan 2025 553rd AsishKunta 663 86 19ms 1 Apr 2025 553rd Hemanthred2005 663 86 18ms 1 Apr 2025 553rd Voltrifrodec 🇸🇰 663 86 23ms 19 Apr 2025 553rd lurey99 663 86 26ms 23 Apr 2025 553rd Alban-Boissard 663 86 24ms 14 Jun 2025 553rd Arkadios200 663 86 26ms 21 Sep 2025 569th ToE42 655 87 19ms 19 Oct 2022 569th omri2001 655 87 18ms 19 Oct 2022 569th Skallos-s 655 87 23ms 5 Dec 2022 569th damoc1es 655 87 17ms 16 Apr 2023 569th michelebastione 🇮🇹 655 87 26ms 20 Dec 2023 569th clampcorder 655 87 16ms 24 Jan 2024 569th GitQuick 655 87 20ms 23 Feb 2024 569th EricSchraf 655 87 22ms 21 Mar 2024 569th PotatoSaladOverlord 655 87 19ms 21 May 2025 569th Ibozz91 655 87 24ms 8 Jun 2025 569th Aquateraneal 655 87 16ms 12 hours ago 580th Andre3582 648 88 21ms 29 Oct 2022 580th Darknova2468 648 88 21ms 20 Nov 2022 580th Solsticely 648 88 20ms 20 Nov 2022 580th goGuru 648 88 22ms 21 Dec 2022 580th msbranicky 648 88 36ms 9 Aug 2023 580th gussy420 648 88 19ms 28 Oct 2023 580th Shynif 648 88 19ms 21 Feb 2024 580th asterized 648 88 31ms 24 Aug 2024 580th hippopotam00sehead 🇨🇦 648 88 22ms 11 Sep 2024 580th 08jne01 648 88 19ms 21 Nov 2024 580th davidludwik2370 648 88 21ms 14 Sep 2025 591st lovernj 640 89 23ms 23 Aug 2022 591st Roj 640 89 21ms 20 Nov 2022 591st aeonsablaze 640 89 18ms 22 Nov 2022 591st buddyw 640 89 20ms 9 Mar 2023 591st VV1Git 640 89 22ms 28 Mar 2023 591st dranjohn 640 89 22ms 17 Sep 2023 591st ArenaGrenade 640 89 24ms 19 Feb 2024 591st NanduBC 640 89 22ms 6 Sep 2024 591st TheAtrossian 640 89 21ms 5 Jan 2025 591st KimJua41 640 89 19ms 4 May 2025 First Prev 526–600 of 798 Next Last