Tutorial in C 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 Submitted 1st rhdqor213 0 68 2ms 16 Apr 2025 1st KasperKivimaeki 🇫🇮 0 68 3ms 4 days ago 1st sean-niemann 🇺🇸 0 68 3ms 4 days ago 1st SurmanPP 0 68 3ms 4 days ago 1st GrayJoKing 🇦🇺 0 68 3ms 4 days ago 1st GolfingSuccess 🇬🇷 0 68 3ms 4 days ago 1st snoozingnewt 🇺🇸 0 68 2ms 4 days ago 1st DialFrost 🇸🇬 0 68 3ms 4 days ago 1st CaedenHarper 🇨🇦 0 68 3ms 4 days ago 10th edsrzf 🇳🇿 0 70 3ms 18 Apr 2025 10th rucin93 🇵🇱 0 70 3ms 18 Apr 2025 10th HumanoidCPU 0 70 2ms 19 Apr 2025 10th inventshah 0 70 3ms 23 Apr 2025 10th m-tkach 🇺🇦 0 70 4ms 23 Apr 2025 10th Mukundan314 0 70 3ms 25 Apr 2025 10th frankgraziano 0 70 3ms 8 May 2025 10th RYSF13 🇨🇳 0 70 3ms 17 May 2025 10th Shanethegamer 🇺🇸 0 70 3ms 6 Jun 2025 10th Jigglypuffed 0 70 2ms 15 Jul 2025 10th xiaoyiming123 0 70 2ms 24 Jul 2025 10th kkoenig 0 70 2ms 5 Sep 2025 10th SirBogman 🇺🇸 0 70 3ms 17 days ago 10th Lydxn 🇨🇦 0 70 2ms 4 days ago 24th zacjl 0 71 3ms 23 Jan 2025 24th kdx2a 0 71 2ms 12 Feb 2025 24th FlyingPenguin223 0 71 3ms 12 Feb 2025 24th BoBz200 0 71 2ms 11 Mar 2025 24th xsot 🇸🇬 0 71 4ms 17 Apr 2025 29th ovs-code 🇩🇪 0 72 5ms 17 Apr 2025 29th yanjs 0 72 2ms 4 Jul 2025 31st Alex-x90 🇺🇸 0 74 3ms 28 Nov 2024 31st prplz 🇦🇺 0 74 2ms 23 Jan 2025 31st CLOStrophobic 🇮🇹 0 74 3ms 25 Jan 2025 31st madex 🇩🇪 0 74 2ms 13 Feb 2025 31st Zilog80a 0 74 2ms 24 May 2025 31st targrik 0 74 2ms 18 Sep 2025 37th qwertyuiop3 🇷🇺 0 75 3ms 3 Jun 2025 38th oscargeerts 0 76 2ms 23 Jun 2025 39th error256 0 77 2ms 23 Jan 2025 39th b-illy 🇬🇧 0 77 3ms 23 Jan 2025 39th voytxt 🇨🇿 0 77 3ms 16 Apr 2025 39th maksgranko 0 77 3ms 17 days ago 43rd MeWhenI 🇻🇦 0 78 2ms 11 Dec 2024 43rd nilan425 0 78 2ms 16 Apr 2025 45th plcc0 0 80 2ms 26 Feb 2025 46th Mandrzejy 🇵🇱 0 81 3ms 27 Nov 2024 47th emgordon154 0 82 2ms 27 Nov 2024 47th 09cf 0 82 2ms 18 Apr 2025 47th Bpc-CPU 0 82 2ms 12 Jul 2025 47th cyanbun96 0 82 7ms 18 Sep 2025 51st now4est 🇯🇵 0 83 2ms 22 Sep 2025 52nd Natanaelel 🇸🇪 0 85 3ms 9 Dec 2024 53rd BlankSpruce 0 86 3ms 9 Apr 2025 54th Jonatan6 🇩🇰 0 87 3ms 30 Jan 2025 54th remodik 0 87 3ms 17 days ago 56th dokutan 0 88 3ms 3 Feb 2025 57th AdrienHache 🇫🇷 0 89 2ms 25 Nov 2024 57th Iznoanygod 🇺🇸 0 89 3ms 16 Apr 2025 57th RoBoardGod 0 89 2ms 15 May 2025 57th katss2 0 89 3ms 18 Aug 2025 57th biocommando 🇫🇮 0 89 3ms 18 Aug 2025 62nd TeodorDyakov 🇧🇬 0 90 2ms 26 Feb 2025 62nd mathb0y512 0 90 2ms 19 May 2025 64th roupiq 🇵🇱 0 92 3ms 1 Dec 2024 64th AlephSquirrel 0 92 2ms 18 Apr 2025 64th SirObby 🇫🇮 0 92 3ms 26 Jun 2025 64th gastropner 0 92 2ms 7 Jul 2025 68th retrohun 0 94 2ms 1 Apr 2025 69th Babafaba 0 98 3ms 7 days ago 70th ndren 0 99 3ms 5 Sep 2025 71st Herbert00709 🇵🇱 0 101 4ms 27 Nov 2024 71st heanyang1 0 101 2ms 1 Jun 2025 73rd prestosilver 🇺🇸 0 105 3ms 18 Sep 2025 73rd CornerMercury 🇬🇧 0 105 2ms 24 Sep 2025 75th duckyluuk 🇳🇱 0 106 3ms 12 Jan 2025 1–75 of 99 Next Last