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 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 Mandelbrot 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 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 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 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 Mandelbrot 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 598th jeff-re 594 96 1 Apr 2025 602nd a-penton 588 97 22 Sep 2022 602nd jrbud 588 97 6 Jan 2024 602nd befoster 588 97 22 Feb 2024 602nd joshua-el-samalouti 🇩🇪 588 97 26 May 2024 602nd luca1339 588 97 10 Jun 2024 607th lukemalek 582 98 10 Oct 2022 607th UltimateGuy0987 582 98 14 Oct 2022 607th TheLazySquid 582 98 20 Dec 2022 607th StronkCheese 🇺🇸 582 98 13 Mar 2023 607th Anthony-Williams-06 582 98 17 Oct 2023 607th NoneTheFewer 582 98 17 May 2024 607th abcdhhhh 582 98 27 Aug 2024 607th OSYCh314 🇦🇺 582 98 16 Nov 2024 607th cole-wilson 582 98 9 Dec 2024 607th Akilles1 582 98 15 May 2025 617th LukeRichardson-dev 576 99 12 May 2022 617th Tagfox 576 99 18 Jul 2022 617th gabrielsqw 576 99 24 Oct 2023 617th sciencedjinn 576 99 8 Nov 2024 617th MrNiknoc 576 99 4 days ago 622nd OppositeShark 570 100 19 Jul 2022 622nd NOS4A5I 570 100 10 Jan 2023 622nd lomarbrick 570 100 16 May 2023 622nd karlaacastro44 570 100 5 May 2025 626th markus-rekdal 564 101 10 May 2022 626th fraserli 🇦🇺 564 101 2 May 2023 626th FCORMERAIS 564 101 6 Mar 2024 626th yhm138 564 101 16 Feb 2025 630th AndersH3 🇸🇪 559 102 17 May 2023 630th JulieGermainUNT 559 102 2 Apr 2025 632nd rajlath 553 103 7 Jan 2023 632nd mnurzia 553 103 12 Oct 2023 632nd sqrteipi 553 103 2 Apr 2024 632nd calum12345 553 103 26 Mar 2025 636th winigo3 548 104 8 Aug 2022 636th zt14427 548 104 30 Apr 2023 636th IoLimmer 548 104 24 Jul 2024 639th LordSir101 543 105 19 Jul 2022 639th tmanternach 543 105 24 Nov 2022 639th weber-hge 543 105 13 Jun 2023 639th Eugen-str 543 105 24 Oct 2023 643rd ms-tingliang 538 106 5 Aug 2022 643rd achilleasr 538 106 7 Nov 2022 643rd OleBrumm 538 106 8 Jan 2023 643rd AbhilashaTandon 538 106 19 Sep 2023 643rd sheeperino 🇮🇹 538 106 11 Oct 2024 648th phpboyscout 533 107 18 May 2023 648th DrPrettyman 533 107 5 Jul 2023 648th joseph-w0ng 533 107 5 Jul 2024 648th EnisEfe0 533 107 18 May 2025 652nd landyrisbad 528 108 13 Nov 2022 652nd cakular 528 108 17 May 2024 652nd glassala 528 108 25 Oct 2024 655th tjefferson401 523 109 16 Sep 2022 655th ariesmarinus 523 109 21 Nov 2024 657th profJGermain 518 110 7 Feb 2024 657th JMMMMC 518 110 23 Oct 2024 657th jtb0362 518 110 10 May 2025 660th sagnik3 509 112 8 Aug 2022 660th craftablescience 509 112 19 Sep 2023 662nd kelseychristensen 504 113 2 Nov 2022 662nd ArmsTheLimited 504 113 1 Jun 2023 664th HunterC14 500 114 18 Oct 2024 665th jstechman 496 115 24 Feb 2024 665th dan422442 496 115 19 Oct 2024 667th keelanfh 491 116 20 Dec 2023 667th returnitynet 491 116 27 Jan 2025 669th gioto64 487 117 8 Dec 2022 669th WilfredSalmon 487 117 21 Oct 2023 671st XianchengZ 483 118 18 Aug 2023 671st brindak2005 483 118 2 May 2025 673rd jmmographer 467 122 21 Oct 2023 674th xbxbxb007 463 123 10 Jan 2024 675th kevinnaviapaiva 442 129 20 Feb 2025 Prev 601–675 of 734 Next