The Minesweeper hole will go live in approximately 5 days. Why not try and solve it ahead of time?
PalindromemordnilaP 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 Submitted 526th msbranicky 606 86 175ms 16 Sep 2024 527th emgordon154 606 138 14ms 1 Jan 2025 528th julian-hoelz 605 103 10ms 16 Sep 2024 528th StefanHabel 🇨🇦 605 103 96ms 22 Mar 2025 530th dokutan 601 76 852ms 3 Sep 2024 531st dokutan 601 147 372ms 3 Nov 2024 532nd Arkadios200 600 132 113ms 14 days ago 533rd Shanethegamer 🇺🇸 600 134 429ms 1 Sep 2024 534th ComputerKWasTaken 🇺🇸 599 104 10ms 2 Sep 2024 534th elgan65536 599 104 11ms 23 Sep 2024 534th NickTheEASDude 🇺🇸 599 104 10ms 19 days ago 537th inventshah 598 150 2ms 1 Sep 2024 538th Shanethegamer 🇺🇸 595 177 56ms 4 Sep 2024 539th mousetail 🇳🇱 594 105 4ms 3 Sep 2024 540th BREMAUCY 🇫🇷 594 316 17ms 7 Aug 2025 541st KatieLG 🇬🇧 593 77 918ms 1 Sep 2024 542nd CaedenHarper 🇨🇦 593 149 363ms 10 days ago 543rd CutSandstone 588 106 13ms 21 Dec 2024 544th Shanethegamer 🇺🇸 584 120 8ms 2 Sep 2024 545th DialFrost 🇸🇬 583 107 5ms 1 Sep 2024 545th galloj 🇨🇿 583 107 10ms 4 Sep 2024 545th jared-hughes 583 107 14ms 10 Sep 2024 545th nstearns96 🇬🇧 583 107 11ms 13 Nov 2024 545th brochmann 🇸🇪 583 107 10ms 10 days ago 550th cbrt-x 583 151 142ms 11 Sep 2024 551st Upload-and-View 🇺🇦 580 119 2ms 23 Jul 2025 552nd GeorgeStechman 🇬🇧 580 122 10ms 5 Nov 2024 552nd gigaprofisi 🇺🇸 580 122 12ms 10 Aug 2025 554th snoozingnewt 🇺🇸 580 226 280ms 1 Sep 2024 555th JesseNoEyes 🇺🇸 577 108 10ms 30 Sep 2024 556th xyangst 575 123 10ms 15 Oct 2024 557th JohandeRuiter 🇳🇱 575 156 2ms 2 Sep 2024 558th RedzGoose 🇦🇺 574 101 544ms 15 Oct 2024 559th Mabeloid 🇳🇴 572 109 11ms 1 Sep 2024 559th MassimoParisi 572 109 10ms 18 Sep 2024 559th klixel 🇨🇦 572 109 15ms 21 Sep 2024 559th NotNoper 572 109 12ms 29 Oct 2024 559th za3k 572 109 11ms 15 Jul 2025 564th TeodorDyakov 🇧🇬 564 159 2ms 6 Sep 2025 565th aksyristos 562 111 12ms 1 Sep 2024 565th AstroOrbis 562 111 10ms 30 Jun 2025 567th tomh1012 561 126 11ms 18 Sep 2025 568th dokutan 561 132 4ms 1 Sep 2024 569th MostParsingVex 561 160 43ms 30 Sep 2024 570th RedzGoose 🇦🇺 553 145 111ms 9 Sep 2024 571st msbranicky 548 135 4ms 1 Sep 2024 572nd alphafalfa 540 105 4ms 1 Nov 2024 573rd KatieLG 🇬🇧 539 128 2ms 24 days ago 574th Shanethegamer 🇺🇸 538 107 304ms 1 Sep 2024 575th LeoCh01 537 116 10ms 1 Sep 2024 576th Shanethegamer 🇺🇸 535 91 25ms 1 Sep 2024 577th snoozingnewt 🇺🇸 534 79 34ms 14 days ago 578th albanian-laundromat 533 352 16ms 18 Sep 2025 579th Mabeloid 🇳🇴 532 109 809ms 17 Sep 2024 580th trijin 529 118 4ms 5 Oct 2024 581st MostParsingVex 528 97 20ms 2 Oct 2024 582nd emgordon154 527 133 14ms 16 Dec 2024 583rd Shanethegamer 🇺🇸 526 183 424ms 24 Sep 2025 584th Zhenyu-Bo 524 119 10ms 1 Aug 2025 585th tomh1012 523 169 319ms 17 Sep 2025 586th Misaka18520 520 206 414ms 14 Sep 2024 587th lhulinsky 519 120 14ms 23 Oct 2024 587th arjunarya1 519 120 10ms 11 Sep 2025 589th error256 515 134 2ms 24 Sep 2024 590th CaedenHarper 🇨🇦 512 188 529ms 23 days ago 591st kevinnaviapaiva 511 122 12ms 16 Feb 2025 592nd eddvrs 507 123 10ms 29 Sep 2024 593rd h3ra993huskp 🇯🇵 504 191 473ms 27 Dec 2024 594th yokasuretsu 503 124 14ms 10 Jul 2025 594th hamilton-bonds 503 124 10ms 24 Jul 2025 596th madex 🇩🇪 502 84 39ms 1 Sep 2024 597th dbut2 🇦🇺 502 261 290ms 3 Sep 2024 598th rboath 501 159 127ms 18 Dec 2024 599th LukeBridges 🇬🇧 498 142 11ms 3 Sep 2024 600th MeWhenI 🇻🇦 496 181 2ms 13 Jun 2025 First Prev 526–600 of 677 Next Last