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 523rd RoscoeSmith 687 83 29ms 20 Nov 2022 523rd amadeusdotpng 687 83 20ms 22 Apr 2023 523rd ross-i 687 83 17ms 5 Jul 2023 523rd anonymaew 687 83 26ms 2 Aug 2023 523rd mstang107 687 83 22ms 20 Dec 2023 523rd LHLaurini 🇧🇷 687 83 17ms 26 Jun 2024 523rd C0derX3 🇺🇸 687 83 19ms 18 Sep 2024 523rd ComputerKWasTaken 🇺🇸 687 83 25ms 20 Jan 2025 523rd Vexxter9 🇳🇱 687 83 57ms 4 Feb 2025 523rd CodyKlingler 687 83 25ms 7 Feb 2025 523rd OyuDays 687 83 18ms 17 Mar 2025 523rd julianreece 687 83 20ms 29 Apr 2025 523rd rustykitty 🇺🇸 687 83 21ms 23 days ago 539th Feniske 🇫🇷 679 84 19ms 7 Oct 2022 539th Eilonlif 🇮🇱 679 84 25ms 29 Mar 2023 539th mhsaul 679 84 17ms 11 Apr 2023 539th Phyisis 679 84 22ms 30 Apr 2024 539th MaxCastella 🇫🇷 679 84 28ms 11 Oct 2024 539th SURAJMITTAL 679 84 16ms 17 Dec 2024 539th simplylu 679 84 19ms 5 Jan 2025 539th WillowWispy 679 84 19ms 14 Mar 2025 539th VedJosh 679 84 27ms 3 May 2025 539th hetz2625 679 84 23ms 4 May 2025 549th aazuspan 671 85 18ms 15 Jun 2022 549th myleopard 671 85 22ms 20 Jul 2022 549th LukasFolwarczny 🇨🇿 671 85 28ms 16 Sep 2022 549th aaardwark 671 85 20ms 1 Jun 2025 549th kmathis22 671 85 18ms 10 Sep 2025 554th MichaelMBradley 🇨🇦 663 86 22ms 5 Jun 2022 554th Lemonz-13223 663 86 19ms 21 Sep 2022 554th Bodo171 663 86 23ms 24 Nov 2022 554th shibacho 🇯🇵 663 86 19ms 25 Nov 2022 554th Vaekor 663 86 19ms 9 Jul 2023 554th LeoVanderSteege 663 86 17ms 18 Nov 2023 554th Pale-Vessel 663 86 19ms 18 Dec 2023 554th tik25 663 86 24ms 28 Mar 2024 554th willschremmer 663 86 17ms 27 Apr 2024 554th jamiloBBKing 663 86 24ms 27 Jan 2025 554th AsishKunta 663 86 21ms 1 Apr 2025 554th Hemanthred2005 663 86 16ms 1 Apr 2025 554th Voltrifrodec 🇸🇰 663 86 21ms 19 Apr 2025 554th lurey99 663 86 16ms 23 Apr 2025 554th Alban-Boissard 663 86 23ms 14 Jun 2025 554th Arkadios200 663 86 25ms 21 Sep 2025 570th ToE42 655 87 16ms 19 Oct 2022 570th omri2001 655 87 18ms 19 Oct 2022 570th Skallos-s 655 87 22ms 5 Dec 2022 570th damoc1es 655 87 18ms 16 Apr 2023 570th michelebastione 🇮🇹 655 87 23ms 20 Dec 2023 570th clampcorder 655 87 18ms 24 Jan 2024 570th GitQuick 655 87 20ms 23 Feb 2024 570th EricSchraf 655 87 18ms 21 Mar 2024 570th PotatoSaladOverlord 655 87 18ms 21 May 2025 570th Ibozz91 655 87 22ms 8 Jun 2025 570th Aquateraneal 655 87 17ms 2 days ago 581st Andre3582 648 88 19ms 29 Oct 2022 581st Darknova2468 648 88 18ms 20 Nov 2022 581st Solsticely 648 88 18ms 20 Nov 2022 581st goGuru 648 88 19ms 21 Dec 2022 581st msbranicky 648 88 37ms 9 Aug 2023 581st gussy420 648 88 18ms 28 Oct 2023 581st Shynif 648 88 18ms 21 Feb 2024 581st asterized 648 88 18ms 24 Aug 2024 581st hippopotam00sehead 🇨🇦 648 88 18ms 11 Sep 2024 581st 08jne01 648 88 16ms 21 Nov 2024 581st davidludwik2370 648 88 19ms 14 Sep 2025 592nd lovernj 640 89 22ms 23 Aug 2022 592nd Roj 640 89 23ms 20 Nov 2022 592nd aeonsablaze 640 89 16ms 22 Nov 2022 592nd buddyw 640 89 16ms 9 Mar 2023 592nd VV1Git 640 89 18ms 28 Mar 2023 592nd dranjohn 640 89 21ms 17 Sep 2023 592nd ArenaGrenade 640 89 23ms 19 Feb 2024 592nd NanduBC 640 89 21ms 6 Sep 2024 592nd TheAtrossian 640 89 26ms 5 Jan 2025 First Prev 526–600 of 800 Next Last