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 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 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 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 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 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 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 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 367th SpiritAxolotl 🇺🇸 903 59 20 Mar 2024 367th Andrey-Plotnikov 903 59 19 May 2024 367th emgordon154 903 59 5 Aug 2024 367th duckyluuk 🇳🇱 903 59 3 Oct 2024 367th lifthrasiir 🇰🇷 903 59 23 Nov 2024 367th fuzzylojik-golf 🇺🇸 903 59 1 Jun 2025 367th acollett89 903 59 17 Jun 2025 367th CaedenHarper 🇨🇦 903 59 3 days ago 367th Posandu 903 59 22 mins ago 385th primo-ppcg 🇹🇭 903 93 7 May 2022 385th AlephSquirrel 903 93 21 Jan 2023 385th kg583 🇺🇸 903 93 26 Dec 2024 385th CLOStrophobic 🇮🇹 903 93 17 Jan 2025 385th edsrzf 🇳🇿 903 93 3 Jul 2025 390th marshallward 🇺🇸 902 83 10 May 2022 391st MeWhenI 🇻🇦 902 109 9 Feb 2023 391st CaedenHarper 🇨🇦 902 109 28 Jan 2025 393rd shellbertt 🇨🇦 901 62 4 May 2022 393rd ZakkkkAttackkkk 🇵🇭 901 62 5 May 2022 393rd annaproxy 901 62 8 Jun 2022 393rd bob-th 901 62 9 Jul 2022 393rd btjones0 901 62 15 Jul 2022 393rd tri1212 🇻🇳 901 62 18 Jul 2022 393rd fredrik-bakke 🇳🇴 901 62 5 Oct 2022 393rd jakobkordez 🇸🇮 901 62 19 Oct 2022 393rd Fishron 901 62 29 Nov 2022 393rd KatieLG 🇬🇧 901 62 11 Dec 2022 393rd ItsMeNoobieboy 901 62 20 Dec 2022 393rd firegene 🇮🇪 901 62 3 Jan 2023 393rd ljweel 901 62 13 Feb 2023 393rd 2011-Chan-Ethan 901 62 9 Jul 2023 393rd elgan65536 901 62 18 Nov 2023 393rd Dataen 901 62 16 Jan 2024 393rd Yewzir 🇧🇪 901 62 5 Apr 2024 393rd cuboids 901 62 11 Jul 2024 393rd wuzekai518 901 62 26 Jul 2024 393rd abhishekg999 901 62 17 Sep 2024 393rd lifthrasiir 🇰🇷 901 62 16 Nov 2024 393rd Artemis21 🇬🇧 901 62 17 Jan 2025 393rd lolgeny 901 62 22 Feb 2025 393rd keelimeguy 🇺🇸 901 62 15 May 2025 393rd Flekay 🇩🇪 901 62 19 Jun 2025 393rd DoubleUynn 901 62 25 Jun 2025 419th GolfingSuccess 🇬🇷 901 64 14 Dec 2024 419th MeWhenI 🇻🇦 901 64 24 Dec 2024 421st edsrzf 🇳🇿 901 72 3 Jul 2025 422nd krcs 🇵🇱 901 86 10 May 2022 422nd billings7 🇬🇧 901 86 15 May 2022 422nd revlayle 🇺🇸 901 86 7 Dec 2022 425th GrayJoKing 🇦🇺 900 71 10 Aug 2023 426th Shanethegamer 🇺🇸 900 77 15 May 2023 427th m-tkach 🇺🇦 900 90 7 Dec 2023 428th bwat2 900 130 5 May 2022 429th Betuaredead 899 60 5 Jan 2023 429th Yewzir 🇧🇪 899 60 12 Feb 2023 429th Steffan153 🇫🇮 899 60 23 Feb 2023 429th DialFrost 🇸🇬 899 60 30 Jul 2024 429th GolfingSuccess 🇬🇷 899 60 16 Oct 2024 429th sean-niemann 🇺🇸 899 60 7 Mar 2025 435th MeWhenI 🇻🇦 899 63 5 May 2022 436th Lydxn 🇨🇦 899 64 1 Apr 2023 437th Kacarott 🇦🇺 899 79 13 Jun 2024 438th stefangimmillaro 899 92 24 Oct 2023 438th inverseLorentz 🇦🇺 899 92 27 May 2024 438th sean-niemann 🇺🇸 899 92 8 Jun 2025 441st shinh 898 52 29 Jun 2022 441st MeWhenI 🇻🇦 898 52 25 Jul 2023 443rd Shanethegamer 🇺🇸 898 72 4 May 2022 443rd jared-hughes 898 72 4 May 2022 443rd Waffle3z 898 72 5 May 2022 443rd Blendi-Goose 898 72 16 Mar 2025 443rd edsrzf 🇳🇿 898 72 12 Apr 2025 448th DialFrost 🇸🇬 898 76 23 days ago 449th kg583 🇺🇸 898 79 27 days ago 450th michael-pruglo 🇺🇦 898 94 5 Jul 2022 Prev 376–450 of 3,261 Next