Collatz in all languages 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 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 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 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 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 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 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 Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial # Golfer Points Chars Time 371st nstearns96 🇬🇧 903 59 28 Nov 2022 371st janbehrens 🇩🇪 903 59 17 May 2023 371st Shanethegamer 🇺🇸 903 59 25 May 2023 371st Maznek 903 59 26 Jun 2023 371st SpiritAxolotl 🇺🇸 903 59 20 Mar 2024 371st Andrey-Plotnikov 903 59 19 May 2024 371st emgordon154 903 59 5 Aug 2024 371st duckyluuk 🇳🇱 903 59 3 Oct 2024 371st lifthrasiir 🇰🇷 903 59 23 Nov 2024 371st fuzzylojik-golf 🇺🇸 903 59 1 Jun 2025 371st acollett89 903 59 17 Jun 2025 371st CaedenHarper 🇨🇦 903 59 9 days ago 388th primo-ppcg 🇹🇭 903 93 7 May 2022 388th AlephSquirrel 903 93 21 Jan 2023 388th kg583 🇺🇸 903 93 26 Dec 2024 388th CLOStrophobic 🇮🇹 903 93 17 Jan 2025 388th edsrzf 🇳🇿 903 93 3 Jul 2025 393rd marshallward 🇺🇸 902 83 10 May 2022 394th MeWhenI 🇻🇦 902 109 9 Feb 2023 394th CaedenHarper 🇨🇦 902 109 28 Jan 2025 396th shellbertt 🇨🇦 901 62 4 May 2022 396th ZakkkkAttackkkk 🇵🇭 901 62 5 May 2022 396th annaproxy 901 62 8 Jun 2022 396th bob-th 901 62 9 Jul 2022 396th btjones0 901 62 15 Jul 2022 396th tri1212 🇻🇳 901 62 18 Jul 2022 396th fredrik-bakke 🇳🇴 901 62 5 Oct 2022 396th jakobkordez 🇸🇮 901 62 19 Oct 2022 396th Fishron 901 62 29 Nov 2022 396th KatieLG 🇬🇧 901 62 11 Dec 2022 396th ItsMeNoobieboy 901 62 20 Dec 2022 396th firegene 🇮🇪 901 62 3 Jan 2023 396th ljweel 901 62 13 Feb 2023 396th 2011-Chan-Ethan 901 62 9 Jul 2023 396th elgan65536 901 62 18 Nov 2023 396th Dataen 901 62 16 Jan 2024 396th Yewzir 🇧🇪 901 62 5 Apr 2024 396th cuboids 901 62 11 Jul 2024 396th wuzekai518 901 62 26 Jul 2024 396th abhishekg999 901 62 17 Sep 2024 396th lifthrasiir 🇰🇷 901 62 16 Nov 2024 396th Artemis21 🇬🇧 901 62 17 Jan 2025 396th lolgeny 901 62 22 Feb 2025 396th keelimeguy 🇺🇸 901 62 15 May 2025 396th Flekay 🇩🇪 901 62 19 Jun 2025 396th DoubleUynn 901 62 25 Jun 2025 422nd GolfingSuccess 🇬🇷 901 64 14 Dec 2024 422nd MeWhenI 🇻🇦 901 64 24 Dec 2024 424th edsrzf 🇳🇿 901 72 3 Jul 2025 425th krcs 🇵🇱 901 86 10 May 2022 425th billings7 🇬🇧 901 86 15 May 2022 425th revlayle 🇺🇸 901 86 7 Dec 2022 428th GrayJoKing 🇦🇺 900 71 10 Aug 2023 429th Shanethegamer 🇺🇸 900 77 15 May 2023 430th m-tkach 🇺🇦 900 90 7 Dec 2023 431st bwat2 900 130 5 May 2022 432nd Betuaredead 899 60 5 Jan 2023 432nd Yewzir 🇧🇪 899 60 12 Feb 2023 432nd Steffan153 🇫🇮 899 60 23 Feb 2023 432nd DialFrost 🇸🇬 899 60 30 Jul 2024 432nd GolfingSuccess 🇬🇷 899 60 16 Oct 2024 432nd sean-niemann 🇺🇸 899 60 7 Mar 2025 438th MeWhenI 🇻🇦 899 63 5 May 2022 439th Lydxn 🇨🇦 899 64 1 Apr 2023 440th Kacarott 🇦🇺 899 79 13 Jun 2024 441st stefangimmillaro 899 92 24 Oct 2023 441st inverseLorentz 🇦🇺 899 92 27 May 2024 441st sean-niemann 🇺🇸 899 92 8 Jun 2025 444th shinh 898 52 29 Jun 2022 444th MeWhenI 🇻🇦 898 52 25 Jul 2023 446th Shanethegamer 🇺🇸 898 72 4 May 2022 446th jared-hughes 898 72 4 May 2022 446th Waffle3z 898 72 5 May 2022 446th Blendi-Goose 898 72 16 Mar 2025 446th edsrzf 🇳🇿 898 72 12 Apr 2025 Prev 376–450 of 3,272 Next