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 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 Transpose Sentence 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 Hilbert Curve Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle 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 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 Groovy Harbour Hare Haxe Hush Hy iogii Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua 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 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 Groovy Harbour Hare Haxe Hush Hy iogii Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua 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 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 Transpose Sentence 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 Hilbert Curve Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial # Golfer Points Chars Time 601st felixcroc 600 95 30 Mar 2023 601st Pyro569 600 95 4 Jul 2023 601st rm-rf-innocence 600 95 19 Dec 2023 601st Bit125 600 95 30 Jan 2024 601st aalec 600 95 25 Apr 2024 601st strogor 600 95 20 days ago 607th karhuthebear 594 96 9 May 2022 607th qwjhvbxi 594 96 6 Feb 2024 607th alfonsoalves 594 96 21 Jul 2024 607th jeff-re 594 96 1 Apr 2025 611th a-penton 588 97 22 Sep 2022 611th jrbud 588 97 6 Jan 2024 611th befoster 588 97 22 Feb 2024 611th joshua-el-samalouti 🇩🇪 588 97 26 May 2024 611th luca1339 588 97 10 Jun 2024 616th lukemalek 582 98 10 Oct 2022 616th UltimateGuy0987 582 98 14 Oct 2022 616th TheLazySquid 582 98 20 Dec 2022 616th StronkCheese 🇺🇸 582 98 13 Mar 2023 616th Anthony-Williams-06 582 98 17 Oct 2023 616th NoneTheFewer 582 98 17 May 2024 616th abcdhhhh 582 98 27 Aug 2024 616th OSYCh314 🇦🇺 582 98 16 Nov 2024 616th cole-wilson 582 98 9 Dec 2024 616th Akilles1 582 98 15 May 2025 626th LukeRichardson-dev 576 99 12 May 2022 626th Tagfox 576 99 18 Jul 2022 626th gabrielsqw 576 99 24 Oct 2023 626th sciencedjinn 576 99 8 Nov 2024 626th MrNiknoc 576 99 19 days ago 631st OppositeShark 570 100 19 Jul 2022 631st NOS4A5I 570 100 10 Jan 2023 631st lomarbrick 570 100 16 May 2023 631st karlaacastro44 570 100 5 May 2025 635th markus-rekdal 564 101 10 May 2022 635th fraserli 🇦🇺 564 101 2 May 2023 635th FCORMERAIS 564 101 6 Mar 2024 635th yhm138 564 101 16 Feb 2025 639th AndersH3 🇸🇪 559 102 17 May 2023 639th JulieGermainUNT 559 102 2 Apr 2025 641st rajlath 553 103 7 Jan 2023 641st mnurzia 553 103 12 Oct 2023 641st sqrteipi 553 103 2 Apr 2024 641st calum12345 553 103 26 Mar 2025 645th winigo3 548 104 8 Aug 2022 645th zt14427 548 104 30 Apr 2023 645th IoLimmer 548 104 24 Jul 2024 648th LordSir101 543 105 19 Jul 2022 648th tmanternach 543 105 24 Nov 2022 648th weber-hge 543 105 13 Jun 2023 648th Eugen-str 543 105 24 Oct 2023 652nd ms-tingliang 538 106 5 Aug 2022 652nd achilleasr 538 106 7 Nov 2022 652nd OleBrumm 538 106 8 Jan 2023 652nd AbhilashaTandon 538 106 19 Sep 2023 652nd sheeperino 🇮🇹 538 106 11 Oct 2024 657th phpboyscout 533 107 18 May 2023 657th DrPrettyman 533 107 5 Jul 2023 657th joseph-w0ng 533 107 5 Jul 2024 657th EnisEfe0 533 107 18 May 2025 661st landyrisbad 528 108 13 Nov 2022 661st cakular 528 108 17 May 2024 661st glassala 528 108 25 Oct 2024 664th tjefferson401 523 109 16 Sep 2022 664th ariesmarinus 523 109 21 Nov 2024 666th profJGermain 518 110 7 Feb 2024 666th JMMMMC 518 110 23 Oct 2024 666th jtb0362 518 110 10 May 2025 669th sagnik3 509 112 8 Aug 2022 669th craftablescience 509 112 19 Sep 2023 671st kelseychristensen 504 113 2 Nov 2022 671st ArmsTheLimited 504 113 1 Jun 2023 673rd HunterC14 500 114 18 Oct 2024 674th jstechman 496 115 24 Feb 2024 674th dan422442 496 115 19 Oct 2024 Prev 601–675 of 742 Next