The Minesweeper hole will go live in approximately 3 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 823rd RuyiLi 846 63 11ms 1 Apr 2023 823rd TaserTheFox 🇺🇸 846 63 11ms 25 May 2023 823rd pfysches-boop 846 63 14ms 6 Aug 2023 823rd mhgockel 846 63 11ms 19 Aug 2023 823rd NickTheEASDude 🇺🇸 846 63 11ms 18 Jan 2024 823rd 823126 846 63 15ms 14 Nov 2024 823rd Palladium02 846 63 9ms 12 May 2025 823rd 4very 846 63 11ms 10 Jun 2025 823rd gigaprofisi 🇺🇸 846 63 10ms 17 Jun 2025 823rd Ultra814 846 63 11ms 21 Aug 2025 836th Natanaelel 🇸🇪 845 57 474ms 17 Jan 2024 836th Kacarott 🇦🇺 845 57 425ms 10 Sep 2024 836th albanian-laundromat 845 57 507ms 21 days ago 839th NewDefectus 🇮🇱 845 73 3ms 6 May 2022 839th inventshah 845 73 3ms 12 Jun 2022 839th Natanaelel 🇸🇪 845 73 2ms 15 Jun 2022 839th Herbert00709 🇵🇱 845 73 3ms 22 Dec 2023 839th LorenzoDeGaspari 845 73 3ms 27 May 2024 839th Bpc-CPU 845 73 2ms 12 Jul 2025 839th AZTECCO 845 73 3ms 16 Sep 2025 839th CaedenHarper 🇨🇦 845 73 3ms 28 Sep 2025 847th lynn 845 96 30ms 11 Jul 2023 848th Shanethegamer 🇺🇸 845 98 147ms 26 Oct 2022 848th emgordon154 845 98 132ms 18 Feb 2025 850th jared-hughes 845 100 64ms 20 Jul 2022 850th ZakkkkAttackkkk 🇵🇭 845 100 74ms 10 Aug 2022 850th Walter225 845 100 64ms 25 Jul 2023 853rd ovs-code 🇩🇪 845 161 1,871ms 14 Sep 2025 854th retrohun 844 64 6ms 6 Nov 2022 854th Re-Adventures 🇮🇳 844 64 5ms 7 Nov 2022 854th stellartux 844 64 5ms 26 Dec 2023 854th bac0id 844 64 5ms 29 Jun 2024 854th snoozingnewt 🇺🇸 844 64 6ms 1 Sep 2024 854th albanian-laundromat 844 64 5ms 22 Sep 2025 860th janAkali 🇷🇺 843 77 147ms 12 Feb 2025 861st bschorno 843 92 337ms 12 Oct 2022 861st ChrisTheisen 843 92 374ms 14 Dec 2022 861st kellantech 843 92 333ms 4 Jul 2023 861st Mezzofloat 843 92 286ms 26 Aug 2023 861st Maximizer02 843 92 291ms 1 Oct 2023 861st madeforlosers 843 92 296ms 21 Nov 2024 861st ChromaChroma 843 92 342ms 20 days ago 861st snoozingnewt 🇺🇸 843 92 363ms 20 days ago 869th DialFrost 🇸🇬 842 66 83ms 7 Apr 2025 870th SirBogman 🇺🇸 842 89 51ms 4 May 2022 871st dokutan 842 93 428ms 27 Sep 2025 872nd KatieLG 🇬🇧 842 115 275ms 25 Sep 2022 872nd emgordon154 842 115 256ms 17 Jan 2025 874th krcs 🇵🇱 841 53 242ms 9 May 2022 874th ryanlanegit 841 53 287ms 19 Jun 2022 874th sisyphus-ppcg 🇦🇺 841 53 388ms 15 Aug 2022 877th raszpi 🇭🇺 840 77 128ms 1 Sep 2023 878th error256 840 81 75ms 13 Sep 2024 879th DialFrost 🇸🇬 840 162 1,829ms 13 Sep 2025 879th emgordon154 840 162 1,897ms 17 Sep 2025 881st eshilo-draper 839 75 104ms 6 Sep 2022 881st kmathis22 839 75 94ms 5 Sep 2025 883rd sean-niemann 🇺🇸 839 76 107ms 8 Oct 2024 884th frankgraziano 838 66 5ms 20 Apr 2025 885th emplv 🇱🇻 838 124 27ms 31 Oct 2022 886th Codsilla 🇨🇦 837 51 263ms 1 Jul 2022 887th Andriamanitra 🇫🇮 837 83 13ms 17 Apr 2023 887th Natanaelel 🇸🇪 837 83 13ms 8 Jul 2023 889th Steffan153 🇫🇮 837 97 33ms 18 Jan 2023 890th CatsAreFluffy 837 101 65ms 18 Feb 2023 890th annaproxy 837 101 85ms 9 May 2023 890th wojtekmal 837 101 68ms 15 Nov 2023 890th HumanoidCPU 837 101 63ms 6 May 2024 890th eMGeeneer 837 101 410ms 27 Jun 2024 890th bac0id 837 101 65ms 29 Jun 2024 890th michaelmoynihan 837 101 374ms 3 Sep 2025 890th snoozingnewt 🇺🇸 837 101 390ms 22 days ago 898th ovs-code 🇩🇪 836 85 17ms 11 Dec 2023 899th dokutan 836 88 49ms 9 Jun 2024 900th CLOStrophobic 🇮🇹 836 89 52ms 14 Feb 2025 First Prev 826–900 of 3,391 Next Last