Collatz 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 151st razetime 736 87 22 Aug 2022 152nd james-downey 727 88 9 Jul 2022 152nd jhpaques 🇫🇷 727 88 4 Dec 2022 152nd mamalakic 727 88 1 Mar 2023 152nd xnacly 🇩🇪 727 88 5 Jul 2023 152nd KrausRaus 🇺🇸 727 88 31 Jul 2023 152nd dranjohn 727 88 17 Sep 2023 152nd roguh 🇬🇹 727 88 15 Jan 2024 152nd northsuperman 727 88 24 Mar 2024 160th RealAMC 🇳🇿 719 89 15 Nov 2023 160th mathb0y512 719 89 25 Jun 2024 160th Mabeloid 🇳🇴 719 89 25 Sep 2024 163rd Starwort 🇬🇧 711 90 11 Nov 2022 164th astdefu 703 91 10 Dec 2022 164th msbranicky 703 91 9 Jan 2024 166th MaxElf999 696 92 5 Feb 2023 166th ComputerKWasTaken 🇺🇸 696 92 20 Jan 2025 166th matejmatik123 🇸🇰 696 92 6 Jul 2025 169th LawrenceZ1A 🇨🇦 688 93 25 May 2022 169th jaxmattfair 🇺🇸 688 93 10 Jan 2023 169th Maximizer02 688 93 7 May 2024 169th BlueGummi 688 93 15 Apr 2025 169th 0dyse 688 93 23 Apr 2025 174th Smetalo 681 94 25 Aug 2022 174th kellantech 681 94 8 Aug 2023 174th evan18c 681 94 12 Dec 2023 177th kmathis22 667 96 13 days ago 178th NeatCrown 🇨🇦 660 97 14 Dec 2022 179th calinous 🇷🇴 653 98 2 Mar 2023 179th jtaxen 653 98 14 Apr 2024 181st Azearia 640 100 6 Jul 2023 182nd Sephirem98 627 102 25 Oct 2023 182nd luuumine 🇫🇷 627 102 3 days ago 184th galloj 🇨🇿 621 103 20 May 2023 184th Pyro569 621 103 28 Jul 2023 186th TornadoCookie 604 106 17 Oct 2022 187th aarooosh 598 107 8 Aug 2024 188th dillon-duncando 593 108 22 Sep 2022 189th MasFlam 587 109 21 Jun 2024 190th tweska 🇳🇱 582 110 5 Jun 2023 190th Jaro32768 🇸🇰 582 110 8 Feb 2024 192nd michztl01 577 111 1 Jun 2022 193rd kenballus 571 112 13 Jul 2022 193rd nandanjp 571 112 29 Mar 2023 193rd CyberTapir 571 112 27 Aug 2024 196th Giantnoodlemonster 566 113 14 Sep 2024 197th pinguicula 561 114 6 Apr 2023 197th fkantelberg 561 114 15 Jul 2023 199th TerenceTux 557 115 22 May 2023 200th tik25 547 117 28 Mar 2024 201st 104210 533 120 29 Jul 2022 202nd Qruintrox 529 121 25 Jun 2023 203rd aDwarfNamedUrist 525 122 12 Jul 2023 203rd Alex-Huggett 🇬🇧 525 122 14 Apr 2024 205th cgjohannsen 520 123 12 Jun 2022 206th TotoAJ 512 125 15 Dec 2023 206th mrmena 🇦🇺 512 125 19 Mar 2024 208th StronkCheese 🇺🇸 508 126 18 Feb 2023 209th MEarley 496 129 19 Sep 2023 210th wearsunscreen 481 133 19 Oct 2023 211th 4ndyJ 🇬🇧 478 134 16 Dec 2022 211th programmeruser2 478 134 3 Mar 2023 213th AstroOrbis 464 138 10 Jul 2025 214th julianreece 460 139 29 Apr 2025 215th myclevorname 🇺🇸 441 145 20 Aug 2023 216th Bodo171 438 146 6 Dec 2022 217th jameswmccarty 432 148 24 Sep 2024 218th craftablescience 410 156 19 Sep 2023 219th NOS4A5I 405 158 30 Dec 2022 220th calum12345 390 164 27 Mar 2025 221st george1605 337 190 14 Feb 2023 222nd kevinnaviapaiva 317 202 20 Feb 2025 223rd taha-daneshmand 186 344 2 Oct 2024 224th MaNafromSaar 167 384 14 Nov 2023 225th somT-oss 148 432 26 Nov 2024 First Prev 151–225 of 228 Next Last