Collatz in Python in chars. Achievements Cheevos Holes Languages Medals Miscellaneous 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 Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Multitap Input 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) Taxicab Numbers Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Dragon Curve Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers Huffman Encoder NFA Simulator Nim Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang 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 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> ALGOL 68 ArkScript Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang 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 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily 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 Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Multitap Input 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) Taxicab Numbers Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Dragon Curve Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers Huffman Encoder NFA Simulator Nim Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 597th kmathis22 671 85 20ms 10 Sep 2025 602nd MichaelMBradley 🇨🇦 663 86 24ms 5 Jun 2022 602nd Lemonz-13223 663 86 20ms 21 Sep 2022 602nd Bodo171 663 86 25ms 24 Nov 2022 602nd shibacho 🇯🇵 663 86 20ms 25 Nov 2022 602nd Vaekor 663 86 20ms 9 Jul 2023 602nd LeoVanderSteege 663 86 17ms 18 Nov 2023 602nd Pale-Vessel 663 86 21ms 18 Dec 2023 602nd tik25 663 86 25ms 28 Mar 2024 602nd willschremmer 663 86 16ms 27 Apr 2024 602nd jamiloBBKing 663 86 24ms 27 Jan 2025 602nd AsishKunta 663 86 22ms 1 Apr 2025 602nd Hemanthred2005 663 86 19ms 1 Apr 2025 602nd Voltrifrodec 🇸🇰 663 86 23ms 19 Apr 2025 602nd lurey99 663 86 18ms 23 Apr 2025 602nd Alban-Boissard 663 86 23ms 14 Jun 2025 602nd Aquateraneal 🇺🇸 663 86 17ms 8 Mar 2026 602nd JNedd26 663 86 31ms 23 days ago 619th ToE42 655 87 18ms 19 Oct 2022 619th definitelyOmri 655 87 19ms 19 Oct 2022 619th Skallos-s 655 87 39ms 5 Dec 2022 619th damoc1es 655 87 19ms 16 Apr 2023 619th michelebastione 🇮🇹 655 87 26ms 20 Dec 2023 619th clampcorder 655 87 18ms 24 Jan 2024 619th GitQuick 655 87 20ms 23 Feb 2024 619th EricSchraf 655 87 19ms 21 Mar 2024 619th PotatoSaladOverlord 655 87 20ms 21 May 2025 619th Ibozz91 655 87 24ms 8 Jun 2025 619th chenyuan33 655 87 25ms 21 Feb 2026 630th Andre3582 648 88 17ms 29 Oct 2022 630th Darknova2468 648 88 19ms 20 Nov 2022 630th Solsticely 648 88 20ms 20 Nov 2022 630th goGuru 648 88 22ms 21 Dec 2022 630th msbranicky 648 88 38ms 9 Aug 2023 630th gussy420 648 88 20ms 28 Oct 2023 630th Shynif 648 88 22ms 21 Feb 2024 630th asterized 648 88 19ms 24 Aug 2024 630th hippopotam00sehead 🇨🇦 648 88 20ms 11 Sep 2024 630th 08jne01 648 88 16ms 21 Nov 2024 630th davidludwik2370 648 88 21ms 14 Sep 2025 630th kasarino 648 88 18ms 17 Mar 2026 642nd lovernj 640 89 24ms 23 Aug 2022 642nd Roj 640 89 23ms 20 Nov 2022 642nd aeonsablaze 640 89 18ms 22 Nov 2022 642nd buddyw 640 89 16ms 9 Mar 2023 642nd VV1Git 640 89 19ms 28 Mar 2023 642nd dranjohn 640 89 21ms 17 Sep 2023 642nd ArenaGrenade 640 89 25ms 19 Feb 2024 642nd NanduBC 640 89 23ms 6 Sep 2024 642nd TheAtrossian 640 89 23ms 5 Jan 2025 642nd KimJua41 640 89 20ms 4 May 2025 642nd Nathan-Masala 640 89 30ms 23 days ago 653rd StoverGitHub 633 90 22ms 16 Jun 2022 653rd jamespeilunli 633 90 24ms 4 Jul 2022 653rd TrentGlimp 633 90 20ms 3 Sep 2022 653rd Ugoran 633 90 20ms 19 Nov 2022 653rd PATTRIM 633 90 19ms 5 Jan 2023 653rd charliegaming 633 90 19ms 3 Oct 2023 653rd lhulinsky 633 90 19ms 22 Oct 2024 653rd bthalheim 633 90 22ms 6 Dec 2024 653rd SinArieh 633 90 25ms 4 May 2025 653rd islptng 633 90 23ms 7 Jul 2025 653rd Mr-McChicken 633 90 18ms 4 Oct 2025 653rd NoneTheFewer 633 90 20ms 4 Dec 2025 665th AbelPelser 626 91 23ms 3 Jul 2022 665th Seis 626 91 18ms 9 Dec 2022 665th r-i-c-e 626 91 21ms 9 Jul 2023 665th joshcors 626 91 17ms 30 Jun 2024 665th resoNathan 626 91 16ms 9 Jul 2024 665th jameswmccarty 626 91 21ms 24 Sep 2024 665th hamilton-bonds 626 91 19ms 12 Nov 2024 665th Wonamm 626 91 28ms 14 Feb 2025 673rd TimLeffke 620 92 22ms 17 Aug 2022 673rd Rythoka 620 92 17ms 17 Oct 2022 673rd UriyaBA 620 92 16ms 19 Mar 2023 673rd VladislavGitter 🇪🇸 620 92 19ms 14 Nov 2023 673rd ridingqwerty 🇺🇸 620 92 16ms 22 Dec 2023 673rd Thonoton 620 92 19ms 1 Feb 2024 673rd OCNeve 620 92 19ms 17 Jun 2024 673rd themoonisacheese 620 92 24ms 25 Feb 2025 673rd BabySharkHi 620 92 21ms 22 Apr 2025 673rd arjunarya1 620 92 17ms 28 Aug 2025 673rd TJK-S 620 92 22ms 10 Oct 2025 684th Bananapants22 613 93 27ms 4 Sep 2022 684th jaxmattfair 🇺🇸 613 93 18ms 10 Jan 2023 684th fenix-bear 613 93 20ms 18 Nov 2023 684th epic-programmer-guy 613 93 23ms 22 Dec 2023 684th brimstonetrader 613 93 26ms 18 Nov 2024 684th HunterC14 613 93 28ms 10 Feb 2026 690th atazzam 🇺🇸 606 94 18ms 18 May 2022 690th rohangpta 606 94 16ms 8 Aug 2022 690th shinylego 606 94 24ms 14 Sep 2022 690th sgaltair 606 94 19ms 4 Nov 2022 690th TotoAJ 606 94 19ms 15 Dec 2023 690th Gusic06 606 94 19ms 6 May 2024 690th kyleyarwood 606 94 23ms 6 Oct 2024 690th jj0786-cell 606 94 22ms 1 Apr 2025 690th griffinschreiber 606 94 27ms 1 Apr 2025 690th o800 606 94 18ms 17 Nov 2025 700th felixcroc 600 95 20ms 30 Mar 2023 First Prev 601–700 of 853 Next Last