The Minesweeper hole will go live in approximately 3 days. Why not try and solve it ahead of time?
Collatz in Java 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 JayXon 🇺🇸 1,000 88 608ms 24 Sep 2025 2nd DialFrost 🇸🇬 989 89 429ms 24 Sep 2025 2nd ovs-code 🇩🇪 989 89 368ms 24 Sep 2025 2nd dokutan 989 89 369ms 24 Sep 2025 2nd sean-niemann 🇺🇸 989 89 533ms 24 Sep 2025 2nd Shanethegamer 🇺🇸 989 89 652ms 25 Sep 2025 2nd nwellnhof 🇩🇪 989 89 631ms 25 Sep 2025 2nd m-tkach 🇺🇦 989 89 364ms 25 Sep 2025 2nd namelessiw 989 89 357ms 25 days ago 2nd Yewzir 🇧🇪 989 89 345ms 25 days ago 2nd Yax42 🇫🇷 989 89 356ms 24 days ago 2nd stefangimmillaro 989 89 352ms 22 days ago 2nd CaedenHarper 🇨🇦 989 89 353ms 18 days ago 2nd Jacob385 989 89 365ms 13 hours ago 15th albanian-laundromat 936 94 644ms 24 Sep 2025 15th kmathis22 936 94 672ms 13 days ago 15th jkelly467 936 94 357ms 4 days ago 18th snoozingnewt 🇺🇸 926 95 622ms 19 days ago 19th Liibe 907 97 366ms 25 Sep 2025 19th Schmitt-Very-Cool 907 97 487ms 26 Sep 2025 21st Lydxn 🇨🇦 704 125 364ms 6 May 2022 22nd Irratix 🇳🇱 698 126 312ms 4 May 2022 22nd MeWhenI 🇻🇦 698 126 338ms 4 May 2022 22nd janbehrens 🇩🇪 698 126 325ms 4 May 2022 22nd shellbertt 🇨🇦 698 126 313ms 4 May 2022 22nd inventshah 698 126 319ms 4 May 2022 22nd ScottHamper 698 126 313ms 5 May 2022 22nd 5quiwyrm 698 126 318ms 4 Sep 2022 22nd KrausRaus 🇺🇸 698 126 315ms 9 Sep 2022 22nd Betuaredead 698 126 325ms 5 Jan 2023 22nd annaproxy 698 126 398ms 7 Jan 2023 22nd eMGeeneer 698 126 306ms 15 Jun 2024 22nd mrondon8 698 126 492ms 2 Dec 2024 22nd plastic-bottle 698 126 330ms 27 Aug 2025 35th Luca2812 693 127 408ms 12 Dec 2022 35th h3ra993huskp 🇯🇵 693 127 452ms 17 Sep 2023 35th tigerdan2 🇩🇪 693 127 310ms 19 Dec 2023 35th Apataras 693 127 479ms 16 Jul 2025 39th bac0id 688 128 309ms 29 Jun 2024 40th cbrt-x 682 129 338ms 6 May 2022 40th FlorianCassayre 🇫🇷 682 129 367ms 20 Sep 2022 40th piano-miles 682 129 477ms 8 Feb 2023 40th Widgitty 682 129 398ms 29 May 2023 40th lukashert 682 129 338ms 7 Jun 2023 40th yoshykai 682 129 466ms 27 Mar 2025 46th bwat2 677 130 317ms 5 May 2022 47th SiestaGuru 672 131 380ms 9 Jan 2023 47th HumanoidCPU 672 131 321ms 7 May 2024 49th c0d3-4-F00d 🇩🇪 667 132 327ms 6 May 2022 49th madeforlosers 667 132 317ms 26 Oct 2023 49th Blockyheadman 667 132 495ms 1 Nov 2023 49th SpiritAxolotl 🇺🇸 667 132 502ms 20 Mar 2024 53rd ravnskjaer 🇩🇰 662 133 345ms 11 Sep 2024 53rd 123mjb 662 133 526ms 26 Sep 2025 55th althryenix 657 134 330ms 25 Jul 2022 55th MrGagnonHPS 657 134 326ms 1 Nov 2023 55th noescareno 657 134 417ms 31 May 2025 58th lukehewittvandy 652 135 492ms 18 Jul 2022 58th OriEy 652 135 319ms 27 Apr 2023 58th Maximizer02 652 135 306ms 8 Jun 2024 58th 0dyse 652 135 529ms 23 Apr 2025 62nd crizin 🇰🇷 647 136 368ms 9 Sep 2023 62nd TheZwierzLF 🇵🇱 647 136 573ms 2 Jun 2025 64th eshilo-draper 642 137 361ms 4 Sep 2022 65th azka1368 638 138 316ms 23 Nov 2023 66th Smetalo 633 139 478ms 25 Aug 2022 66th ToxicP1e 633 139 437ms 2 Mar 2023 68th yashima 624 141 415ms 19 Oct 2024 68th matas132 624 141 438ms 16 Sep 2025 68th katss2 624 141 414ms 19 Sep 2025 71st msbranicky 607 145 325ms 9 Jan 2024 72nd deancureton 603 146 502ms 24 Mar 2024 73rd pyuraii 591 149 452ms 27 Sep 2022 73rd Chinay-Domitrix 🇺🇸 591 149 310ms 29 Mar 2025 75th KyleLashmet 587 150 333ms 18 Jul 2022 1–75 of 105 Next Last