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 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 300th JayXon 🇺🇸 911 70 7 May 2022 302nd Steffan153 🇫🇮 911 71 10 Dec 2022 302nd synt7x 🇺🇸 911 71 7 Jul 2025 304th Bubbler-4 910 33 6 May 2022 304th rak1507 🇬🇧 910 33 8 May 2022 304th ngn 🇧🇬 910 33 11 May 2022 304th zacjl 910 33 3 Jun 2025 304th GrayJoKing 🇦🇺 910 33 4 Jun 2025 309th edsrzf 🇳🇿 910 54 19 days ago 309th CaedenHarper 🇨🇦 910 54 4 days ago 309th sean-niemann 🇺🇸 910 54 4 days ago 312th Steffan153 🇫🇮 910 71 14 Oct 2022 312th Shanethegamer 🇺🇸 910 71 15 Oct 2022 312th stefangimmillaro 910 71 16 Oct 2022 312th MeWhenI 🇻🇦 910 71 16 Oct 2022 316th pardouin 🇫🇷 910 72 21 May 2025 317th annaproxy 910 78 13 Jan 2023 317th IanUtley 910 78 12 Nov 2023 317th GrayJoKing 🇦🇺 910 78 28 Nov 2023 317th edsrzf 🇳🇿 910 78 16 Aug 2025 321st andersk 🇺🇸 910 91 25 Oct 2022 321st Super-Pizza 🇨🇦 910 91 4 Dec 2022 321st klixel 🇨🇦 910 91 20 May 2023 321st lynn 910 91 6 Jul 2024 321st edsrzf 🇳🇿 910 91 29 Nov 2024 321st DialFrost 🇸🇬 910 91 7 Apr 2025 327th Shanethegamer 🇺🇸 909 86 15 May 2023 327th JayXon 🇺🇸 909 86 15 May 2023 327th Steffan153 🇫🇮 909 86 16 May 2023 327th Lydxn 🇨🇦 909 86 16 May 2023 327th GrayJoKing 🇦🇺 909 86 11 Aug 2023 327th sean-niemann 🇺🇸 909 86 11 Jul 2024 333rd Lydxn 🇨🇦 908 47 5 May 2022 334th JayXon 🇺🇸 908 53 17 Aug 2024 335th tailorspy 908 93 27 May 2024 335th sean-niemann 🇺🇸 908 93 9 Jun 2025 337th Shanethegamer 🇺🇸 907 61 9 Oct 2023 337th edsrzf 🇳🇿 907 61 4 Jul 2025 339th nai62 907 68 27 Aug 2022 340th Lydxn 🇨🇦 907 81 1 Apr 2023 341st GrayJoKing 🇦🇺 906 74 1 Nov 2023 342nd ovs-code 🇩🇪 905 67 13 Dec 2022 342nd Steffan153 🇫🇮 905 67 18 Dec 2022 342nd Lydxn 🇨🇦 905 67 4 Feb 2023 342nd DialFrost 🇸🇬 905 67 17 Mar 2025 346th ovs-code 🇩🇪 905 75 12 Sep 2024 346th Kacarott 🇦🇺 905 75 13 Sep 2024 348th lynn 905 78 5 May 2022 349th MeWhenI 🇻🇦 904 109 9 Feb 2023 349th CaedenHarper 🇨🇦 904 109 28 Jan 2025 351st KrausRaus 🇺🇸 903 59 4 May 2022 351st voytxt 🇨🇿 903 59 4 May 2022 351st KingSkyrock 🇺🇸 903 59 18 May 2022 351st ZakkkkAttackkkk 🇵🇭 903 59 14 Jul 2022 351st aksyristos 903 59 28 Oct 2022 351st nstearns96 🇬🇧 903 59 28 Nov 2022 351st janbehrens 🇩🇪 903 59 17 May 2023 351st Shanethegamer 🇺🇸 903 59 25 May 2023 351st Maznek 903 59 26 Jun 2023 351st SpiritAxolotl 🇺🇸 903 59 20 Mar 2024 351st Andrey-Plotnikov 903 59 19 May 2024 351st emgordon154 903 59 5 Aug 2024 351st duckyluuk 🇳🇱 903 59 3 Oct 2024 351st lifthrasiir 🇰🇷 903 59 23 Nov 2024 351st fuzzylojik-golf 🇺🇸 903 59 1 Jun 2025 351st acollett89 903 59 17 Jun 2025 351st iczelia 🇩🇪 903 59 8 days ago 368th GrayJoKing 🇦🇺 903 71 10 Aug 2023 369th marshallward 🇺🇸 903 83 10 May 2022 370th primo-ppcg 🇹🇭 903 93 7 May 2022 370th AlephSquirrel 903 93 21 Jan 2023 370th kg583 🇺🇸 903 93 26 Dec 2024 370th CLOStrophobic 🇮🇹 903 93 17 Jan 2025 370th edsrzf 🇳🇿 903 93 3 Jul 2025 375th Shanethegamer 🇺🇸 902 77 15 May 2023 Prev 301–375 of 3,338 Next