The Minesweeper hole will go live in approximately 4 days. Why not try and solve it ahead of time?
Collatz 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 749th wh3n3v3r 🇨🇿 858 35 9ms 18 Nov 2024 752nd JRaspass 🇬🇧 858 41 416ms 4 May 2022 752nd SirBogman 🇺🇸 858 41 304ms 4 May 2022 752nd Natanaelel 🇸🇪 858 41 420ms 4 May 2022 755th MeWhenI 🇻🇦 858 81 8ms 23 May 2023 756th 5quiwyrm 857 52 242ms 4 Sep 2022 756th MeWhenI 🇻🇦 857 52 265ms 28 Jan 2023 756th Feniske 🇫🇷 857 52 251ms 7 Nov 2023 756th dcgjb 857 52 300ms 29 Jan 2024 756th JPRuskin 🇬🇧 857 52 254ms 7 Apr 2025 756th IISResetMe 857 52 268ms 7 Apr 2025 756th Ripick 857 52 265ms 1 Jun 2025 763rd jared-hughes 857 72 3ms 6 Jul 2022 763rd Steffan153 🇫🇮 857 72 3ms 3 Jan 2023 763rd MeWhenI 🇻🇦 857 72 2ms 7 May 2023 763rd ListeriaM 857 72 2ms 22 Aug 2023 763rd larcherMTT 857 72 3ms 5 Oct 2024 763rd snyderek 🇺🇸 857 72 3ms 19 Feb 2025 763rd 5quiwyrm 857 72 3ms 29 Jun 2025 763rd TeodorDyakov 🇧🇬 857 72 2ms 8 Jul 2025 763rd xiaoyiming123 857 72 2ms 12 Jul 2025 772nd MeWhenI 🇻🇦 857 145 961ms 28 Mar 2025 773rd ovs-code 🇩🇪 856 83 63ms 1 Jul 2024 774th Liibe 856 97 520ms 25 Sep 2025 774th Schmitt-Very-Cool 856 97 362ms 26 Sep 2025 776th typeswitch-dev 🇵🇹 855 75 5ms 22 Jul 2023 777th 386asm 🇺🇸 855 86 45ms 9 Apr 2023 778th Frowny 854 38 43ms 5 May 2022 778th stackofbears 854 38 53ms 14 Mar 2025 780th DialFrost 🇸🇬 854 50 263ms 24 Oct 2023 781st MeWhenI 🇻🇦 854 71 110ms 13 Dec 2022 782nd yeminghan2021 854 99 61ms 3 Feb 2025 783rd frankgraziano 854 198 139ms 13 days ago 784th eshilo-draper 853 91 348ms 4 Sep 2022 784th ericlangedijk 🇸🇮 853 91 387ms 23 May 2023 784th KatieLG 🇬🇧 853 91 356ms 30 Apr 2024 784th Mikey-Beep 🇬🇧 853 91 345ms 3 Sep 2024 788th henrydukepickle 853 97 171ms 8 Jul 2025 789th o0lit3 🇺🇸 851 54 8ms 22 Jun 2023 789th Natanaelel 🇸🇪 851 54 8ms 10 Feb 2025 791st Yewzir 🇧🇪 851 65 4ms 9 Oct 2023 791st MeWhenI 🇻🇦 851 65 4ms 10 Oct 2023 793rd frosster 851 76 7ms 12 May 2023 793rd kyleclaassen 851 76 11ms 20 May 2023 793rd NickTheEASDude 🇺🇸 851 76 6ms 7 May 2024 793rd koipondx86 851 76 8ms 8 Nov 2024 797th Shanethegamer 🇺🇸 851 83 1,232ms 4 May 2022 798th MeWhenI 🇻🇦 851 92 398ms 10 Oct 2022 798th Betuaredead 851 92 468ms 5 Jan 2023 798th emgordon154 851 92 427ms 27 May 2025 798th Yax42 🇫🇷 851 92 420ms 23 days ago 802nd mtirado1 850 74 95ms 24 Dec 2022 802nd Betuaredead 850 74 86ms 6 Jan 2023 802nd KatieLG 🇬🇧 850 74 95ms 15 Jan 2023 802nd bwat2 850 74 99ms 31 Mar 2023 802nd stackotter 850 74 92ms 29 May 2023 802nd ovs-code 🇩🇪 850 74 112ms 17 Apr 2024 802nd madeforlosers 850 74 89ms 21 Nov 2024 809th SirBogman 🇺🇸 849 55 43ms 5 May 2022 809th olivermrose 🇺🇸 849 55 45ms 6 May 2022 809th 4hg 🇺🇸 849 55 46ms 24 Aug 2022 809th DialFrost 🇸🇬 849 55 50ms 1 Jan 2023 809th error256 849 55 43ms 4 May 2024 814th Shanethegamer 🇺🇸 849 58 1,092ms 17 Sep 2025 815th Shanethegamer 🇺🇸 849 99 27ms 27 Apr 2023 816th Grrisly 849 114 295ms 25 Mar 2024 817th JayXon 🇺🇸 848 56 998ms 9 May 2022 818th the-zammers 847 68 188ms 2 Oct 2023 819th MeWhenI 🇻🇦 846 26 201ms 25 Aug 2022 819th AlephSquirrel 846 26 141ms 6 Jan 2023 819th ovs-code 🇩🇪 846 26 524ms 5 May 2024 819th saito-ta 🇯🇵 846 26 139ms 12 Dec 2024 823rd randolchance 846 63 11ms 8 Jan 2023 823rd CatsAreFluffy 846 63 11ms 18 Feb 2023 823rd amiralitaheri 846 63 11ms 23 Feb 2023 First Prev 751–825 of 3,390 Next Last