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 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 1st rhdqor213 0 68 16 Apr 2025 2nd KasperKivimaeki 🇫🇮 0 70 16 Apr 2025 2nd edsrzf 🇳🇿 0 70 18 Apr 2025 2nd sean-niemann 🇺🇸 0 70 18 Apr 2025 2nd rucin93 🇵🇱 0 70 18 Apr 2025 2nd DialFrost 🇸🇬 0 70 18 Apr 2025 2nd CaedenHarper 🇨🇦 0 70 18 Apr 2025 2nd HumanoidCPU 0 70 19 Apr 2025 2nd GolfingSuccess 🇬🇷 0 70 19 Apr 2025 2nd inventshah 0 70 23 Apr 2025 2nd m-tkach 🇺🇦 0 70 23 Apr 2025 2nd Mukundan314 0 70 25 Apr 2025 2nd frankgraziano 0 70 8 May 2025 2nd RYSF13 🇨🇳 0 70 17 May 2025 2nd Shanethegamer 🇺🇸 0 70 6 Jun 2025 2nd Jigglypuffed 0 70 15 Jul 2025 2nd xiaoyiming123 0 70 24 Jul 2025 2nd kkoenig 0 70 9 days ago 2nd snoozingnewt 🇺🇸 0 70 11 hours ago 20th zacjl 0 71 23 Jan 2025 20th Lydxn 🇨🇦 0 71 31 Jan 2025 20th kdx2a 0 71 12 Feb 2025 20th FlyingPenguin223 0 71 12 Feb 2025 20th BoBz200 0 71 11 Mar 2025 20th xsot 🇸🇬 0 71 17 Apr 2025 26th ovs-code 🇩🇪 0 72 17 Apr 2025 26th yanjs 0 72 4 Jul 2025 28th Alex-x90 🇺🇸 0 74 28 Nov 2024 28th prplz 🇦🇺 0 74 23 Jan 2025 28th CLOStrophobic 🇮🇹 0 74 25 Jan 2025 28th madex 🇩🇪 0 74 13 Feb 2025 28th Zilog80a 0 74 24 May 2025 33rd qwertyuiop3 🇷🇺 0 75 3 Jun 2025 34th oscargeerts 0 76 23 Jun 2025 35th SirBogman 🇺🇸 0 77 3 Dec 2024 35th error256 0 77 23 Jan 2025 35th b-illy 🇬🇧 0 77 23 Jan 2025 35th voytxt 🇨🇿 0 77 16 Apr 2025 39th MeWhenI 🇻🇦 0 78 11 Dec 2024 39th nilan425 0 78 16 Apr 2025 41st plcc0 0 80 26 Feb 2025 42nd Mandrzejy 🇵🇱 0 81 27 Nov 2024 43rd emgordon154 0 82 27 Nov 2024 43rd 09cf 0 82 18 Apr 2025 43rd Bpc-CPU 0 82 12 Jul 2025 46th Natanaelel 🇸🇪 0 85 9 Dec 2024 47th BlankSpruce 0 86 9 Apr 2025 48th Jonatan6 🇩🇰 0 87 30 Jan 2025 49th dokutan 0 88 3 Feb 2025 50th AdrienHache 🇫🇷 0 89 25 Nov 2024 50th Iznoanygod 🇺🇸 0 89 16 Apr 2025 50th RoBoardGod 0 89 15 May 2025 50th katss2 0 89 18 Aug 2025 50th biocommando 🇫🇮 0 89 18 Aug 2025 55th TeodorDyakov 🇧🇬 0 90 26 Feb 2025 55th mathb0y512 0 90 19 May 2025 57th roupiq 🇵🇱 0 92 1 Dec 2024 57th AlephSquirrel 0 92 18 Apr 2025 57th SirObby 🇫🇮 0 92 26 Jun 2025 57th gastropner 0 92 7 Jul 2025 61st retrohun 0 94 1 Apr 2025 62nd ndren 0 99 9 days ago 63rd Herbert00709 🇵🇱 0 101 27 Nov 2024 63rd heanyang1 0 101 1 Jun 2025 65th duckyluuk 🇳🇱 0 106 12 Jan 2025 66th qpwoeirut 0 108 7 Feb 2025 67th Jacob385 0 119 25 Feb 2025 68th psethwick 0 120 31 Jan 2025 68th DeltaRedBlue 0 120 26 Jul 2025 70th ilovapples 0 122 9 Jun 2025 71st matejmatik123 🇸🇰 0 130 15 Aug 2025 72nd DABANANAMAN120 0 131 26 Jun 2025 73rd xyangst 0 142 14 Feb 2025 74th JunkIce 0 143 24 Nov 2024 75th Vexxter9 🇳🇱 0 146 24 days ago 1–75 of 88 Next