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 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 Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers 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 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 Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Turtle Tutorial # Golfer Points Chars Time 592nd islptng 633 90 7 Jul 2025 592nd Mr-McChicken 633 90 28 hours ago 603rd AbelPelser 626 91 3 Jul 2022 603rd Seis 626 91 9 Dec 2022 603rd r-i-c-e 626 91 9 Jul 2023 603rd joshcors 626 91 30 Jun 2024 603rd resoNathan 626 91 9 Jul 2024 603rd jameswmccarty 626 91 24 Sep 2024 603rd hamilton-bonds 626 91 12 Nov 2024 603rd Wonamm 626 91 14 Feb 2025 611th TimLeffke 620 92 17 Aug 2022 611th Rythoka 620 92 17 Oct 2022 611th UriyaBA 620 92 19 Mar 2023 611th VladislavGitter 🇪🇸 620 92 14 Nov 2023 611th ridingqwerty 🇺🇸 620 92 22 Dec 2023 611th Thonoton 620 92 1 Feb 2024 611th OCNeve 620 92 17 Jun 2024 611th themoonisacheese 620 92 25 Feb 2025 611th BabySharkHi 620 92 22 Apr 2025 611th arjunarya1 620 92 28 Aug 2025 621st Bananapants22 613 93 4 Sep 2022 621st jaxmattfair 🇺🇸 613 93 10 Jan 2023 621st fenix-bear 613 93 18 Nov 2023 621st epic-programmer-guy 613 93 22 Dec 2023 621st brimstonetrader 613 93 18 Nov 2024 621st Aquateraneal 613 93 11 Aug 2025 627th atazzam 🇺🇸 606 94 18 May 2022 627th rohangpta 606 94 8 Aug 2022 627th shinylego 606 94 14 Sep 2022 627th sgaltair 606 94 4 Nov 2022 627th TotoAJ 606 94 15 Dec 2023 627th Gusic06 606 94 6 May 2024 627th kyleyarwood 606 94 6 Oct 2024 627th jj0786-cell 606 94 1 Apr 2025 627th griffinschreiber 606 94 1 Apr 2025 636th felixcroc 600 95 30 Mar 2023 636th Pyro569 600 95 4 Jul 2023 636th rm-rf-innocence 600 95 19 Dec 2023 636th Bit125 600 95 30 Jan 2024 636th aalec 600 95 25 Apr 2024 636th strogor 600 95 13 Jun 2025 636th cthierfelder 🇲🇨 600 95 17 Jul 2025 643rd karhuthebear 594 96 9 May 2022 643rd qwjhvbxi 594 96 6 Feb 2024 643rd alfonsoalves 594 96 21 Jul 2024 643rd jeff-re 594 96 1 Apr 2025 647th a-penton 588 97 22 Sep 2022 647th jrbud 588 97 6 Jan 2024 647th befoster 588 97 22 Feb 2024 647th joshua-el-samalouti 🇩🇪 588 97 26 May 2024 647th luca1339 588 97 10 Jun 2024 652nd lukemalek 582 98 10 Oct 2022 652nd UltimateGuy0987 582 98 14 Oct 2022 652nd TheLazySquid 582 98 20 Dec 2022 652nd StronkCheese 🇺🇸 582 98 13 Mar 2023 652nd Anthony-Williams-06 582 98 17 Oct 2023 652nd NoneTheFewer 582 98 17 May 2024 652nd abcdhhhh 582 98 27 Aug 2024 652nd OSYCh314 🇦🇺 582 98 16 Nov 2024 652nd cole-wilson 582 98 9 Dec 2024 652nd Akilles1 582 98 15 May 2025 662nd LukeRichardson-dev 576 99 12 May 2022 662nd Tagfox 576 99 18 Jul 2022 662nd gabrielsqw 576 99 24 Oct 2023 662nd sciencedjinn 576 99 8 Nov 2024 662nd MrNiknoc 576 99 15 Jun 2025 667th OppositeShark 570 100 19 Jul 2022 667th NOS4A5I 570 100 10 Jan 2023 667th lomarbrick 570 100 16 May 2023 667th karlaacastro44 570 100 5 May 2025 671st markus-rekdal 564 101 10 May 2022 671st fraserli 🇦🇺 564 101 2 May 2023 671st FCORMERAIS 564 101 6 Mar 2024 671st yhm138 564 101 16 Feb 2025 675th AndersH3 🇸🇪 559 102 17 May 2023 First Prev 601–675 of 783 Next Last
