The Minesweeper hole will go live in approximately 3 days. Why not try and solve it ahead of time?
Collatz in C in bytes. 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 Bytes Time Submitted 148th piano-miles 756 86 3ms 30 Mar 2023 152nd razetime 747 87 3ms 22 Aug 2022 153rd james-downey 739 88 3ms 9 Jul 2022 153rd jhpaques 🇫🇷 739 88 3ms 4 Dec 2022 153rd mamalakic 739 88 3ms 1 Mar 2023 153rd xnacly 🇩🇪 739 88 2ms 5 Jul 2023 153rd KrausRaus 🇺🇸 739 88 2ms 31 Jul 2023 153rd dranjohn 739 88 3ms 17 Sep 2023 153rd roguh 🇬🇹 739 88 3ms 15 Jan 2024 153rd northsuperman 739 88 3ms 24 Mar 2024 161st RealAMC 🇳🇿 730 89 3ms 15 Nov 2023 161st mathb0y512 730 89 2ms 25 Jun 2024 161st Mabeloid 🇳🇴 730 89 4ms 25 Sep 2024 164th Starwort 🇬🇧 722 90 3ms 11 Nov 2022 165th astdefu 714 91 3ms 10 Dec 2022 165th msbranicky 714 91 3ms 9 Jan 2024 167th MaxElf999 707 92 3ms 5 Feb 2023 167th ComputerKWasTaken 🇺🇸 707 92 2ms 20 Jan 2025 167th matejmatik123 🇸🇰 707 92 2ms 6 Jul 2025 170th LawrenceZ1A 🇨🇦 699 93 3ms 25 May 2022 170th jaxmattfair 🇺🇸 699 93 3ms 10 Jan 2023 170th Maximizer02 699 93 3ms 7 May 2024 170th BlueGummi 699 93 2ms 15 Apr 2025 170th 0dyse 699 93 3ms 23 Apr 2025 175th Smetalo 691 94 2ms 25 Aug 2022 175th kellantech 691 94 3ms 8 Aug 2023 175th evan18c 691 94 3ms 12 Dec 2023 178th kmathis22 677 96 2ms 25 Sep 2025 179th NeatCrown 🇨🇦 670 97 3ms 14 Dec 2022 180th calinous 🇷🇴 663 98 3ms 2 Mar 2023 180th jtaxen 663 98 3ms 14 Apr 2024 182nd Azearia 650 100 2ms 6 Jul 2023 183rd Sephirem98 637 102 3ms 25 Oct 2023 184th galloj 🇨🇿 631 103 2ms 20 May 2023 184th Pyro569 631 103 3ms 28 Jul 2023 186th TornadoCookie 607 107 3ms 17 Oct 2022 186th aarooosh 607 107 2ms 8 Aug 2024 188th dillon-duncando 602 108 3ms 22 Sep 2022 189th MasFlam 596 109 2ms 21 Jun 2024 190th tweska 🇳🇱 591 110 2ms 5 Jun 2023 190th Jaro32768 🇸🇰 591 110 3ms 8 Feb 2024 192nd michztl01 586 111 2ms 1 Jun 2022 193rd kenballus 580 112 2ms 13 Jul 2022 193rd nandanjp 580 112 2ms 29 Mar 2023 193rd CyberTapir 580 112 2ms 27 Aug 2024 196th Giantnoodlemonster 575 113 4ms 14 Sep 2024 197th pinguicula 570 114 3ms 6 Apr 2023 197th fkantelberg 570 114 3ms 15 Jul 2023 199th TerenceTux 565 115 3ms 22 May 2023 200th tik25 556 117 3ms 28 Mar 2024 201st 104210 542 120 4ms 29 Jul 2022 202nd Qruintrox 537 121 4ms 25 Jun 2023 203rd aDwarfNamedUrist 533 122 3ms 12 Jul 2023 203rd Alex-Huggett 🇬🇧 533 122 2ms 14 Apr 2024 205th cgjohannsen 528 123 3ms 12 Jun 2022 206th TotoAJ 520 125 3ms 15 Dec 2023 206th mrmena 🇦🇺 520 125 2ms 19 Mar 2024 208th StronkCheese 🇺🇸 516 126 2ms 18 Feb 2023 209th MEarley 504 129 3ms 19 Sep 2023 210th wearsunscreen 489 133 2ms 19 Oct 2023 211th 4ndyJ 🇬🇧 485 134 3ms 16 Dec 2022 211th programmeruser2 485 134 3ms 3 Mar 2023 213th AstroOrbis 471 138 3ms 10 Jul 2025 214th julianreece 468 139 3ms 29 Apr 2025 215th myclevorname 🇺🇸 448 145 3ms 20 Aug 2023 216th Bodo171 445 146 4ms 6 Dec 2022 217th jameswmccarty 439 148 2ms 24 Sep 2024 218th craftablescience 417 156 3ms 19 Sep 2023 219th NOS4A5I 411 158 3ms 30 Dec 2022 220th calum12345 396 164 2ms 27 Mar 2025 221st george1605 342 190 4ms 14 Feb 2023 222nd kevinnaviapaiva 322 202 3ms 20 Feb 2025 223rd taha-daneshmand 188 345 2ms 2 Oct 2024 224th MaNafromSaar 169 384 2ms 14 Nov 2023 225th somT-oss 150 432 2ms 26 Nov 2024 First Prev 151–225 of 228 Next Last
