The Minesweeper hole will go live in approximately 5 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 601st mousetail 🇳🇱 876 40 73ms 29 Aug 2025 602nd primo-ppcg 🇹🇭 876 193 104ms 14 Aug 2025 603rd GrayJoKing 🇦🇺 875 84 53ms 19 Jun 2022 603rd primo-ppcg 🇹🇭 875 84 48ms 29 Jun 2022 605th Shanethegamer 🇺🇸 875 142 993ms 27 Mar 2025 605th DialFrost 🇸🇬 875 142 857ms 28 Mar 2025 605th emgordon154 875 142 910ms 10 Apr 2025 608th Shanethegamer 🇺🇸 874 51 405ms 15 May 2023 609th rucin93 🇵🇱 874 57 171ms 4 Aug 2024 609th dokutan 874 57 162ms 9 Aug 2024 611th c0d3-4-F00d 🇩🇪 874 61 11ms 6 May 2022 611th jackkav 874 61 11ms 26 Jun 2022 611th TechNolaByte 874 61 11ms 6 Jul 2022 611th Heathcorp 🇦🇺 874 61 10ms 17 Jul 2022 611th C0de5mith 🇺🇸 874 61 11ms 3 Aug 2022 611th sebipopa 🇷🇴 874 61 10ms 18 Aug 2022 611th moikaturns 🇬🇧 874 61 14ms 25 Sep 2022 611th FlorianCassayre 🇫🇷 874 61 11ms 27 Sep 2022 611th Mazn3k 874 61 10ms 1 Feb 2023 611th tvcv901 874 61 11ms 22 Mar 2023 611th unfinishedprogram 874 61 11ms 19 Jul 2023 611th snoozingnewt 🇺🇸 874 61 11ms 23 Sep 2023 611th funnyboy-roks 874 61 10ms 9 May 2024 611th bac0id 874 61 9ms 29 Jun 2024 611th madex 🇩🇪 874 61 11ms 9 Jul 2024 611th FortuiteMan 🇫🇷 874 61 10ms 10 Oct 2024 611th RobertHoeh 874 61 11ms 5 Apr 2025 611th LvLError 874 61 11ms 29 May 2025 611th Lv0Sys 🇵🇱 874 61 12ms 30 May 2025 611th miles-evan 874 61 13ms 5 Aug 2025 611th alexsave 874 61 12ms 13 days ago 632nd Grrisly 874 74 4ms 25 Mar 2024 633rd snoozingnewt 🇺🇸 874 95 489ms 18 days ago 634th NerdyMcNerd42 873 64 20ms 26 Oct 2022 634th tpasfieldERAU 873 64 25ms 14 Nov 2022 634th CheeseCake628 🇳🇴 873 64 22ms 6 Jan 2023 634th adamnielson42 🇺🇸 873 64 22ms 25 Apr 2023 634th nathsou 🇫🇷 873 64 21ms 2 Sep 2023 634th zwxzwxzwx21 873 64 24ms 30 Jan 2024 634th steffan-polygolf 873 64 21ms 8 Mar 2024 634th Jacob385 873 64 62ms 4 Apr 2024 634th gallium-gonzollium 873 64 28ms 26 Aug 2024 634th Babafaba 873 64 24ms 11 days ago 644th johnnythedoggie 873 72 103ms 13 May 2022 644th kaascevich 873 72 109ms 8 Jul 2025 646th DialFrost 🇸🇬 873 73 100ms 3 Jun 2025 647th Shanethegamer 🇺🇸 872 66 189ms 4 May 2022 647th scpchicken 🇵🇼 872 66 328ms 5 May 2022 647th sisyphus-ppcg 🇦🇺 872 66 170ms 6 May 2022 647th Natanaelel 🇸🇪 872 66 159ms 15 Jun 2022 647th Z-snails 872 66 339ms 27 Feb 2023 647th Jeremy-Stafford 872 66 333ms 27 Feb 2023 647th alomiF 872 66 367ms 1 Sep 2023 647th btnlq 872 66 144ms 17 Oct 2023 655th DialFrost 🇸🇬 872 86 49ms 24 Oct 2024 655th stefangimmillaro 872 86 49ms 14 Jan 2025 657th c0d3-4-F00d 🇩🇪 872 89 344ms 5 May 2022 657th fkantelberg 872 89 401ms 15 Jul 2023 657th bac0id 872 89 363ms 26 Sep 2023 657th TRexOnGit 872 89 360ms 16 Feb 2024 657th arcpolaris 872 89 353ms 18 Nov 2024 662nd nwellnhof 🇩🇪 872 111 276ms 4 May 2022 662nd stefangimmillaro 872 111 289ms 26 Sep 2023 662nd kkoenig 872 111 285ms 4 Jan 2024 665th HPWiz 🇳🇿 871 49 259ms 4 May 2022 665th JayXon 🇺🇸 871 49 274ms 5 May 2022 665th Steffan153 🇫🇮 871 49 303ms 10 Dec 2022 665th ovs-code 🇩🇪 871 49 407ms 24 Oct 2023 665th sean-niemann 🇺🇸 871 49 254ms 12 Jul 2024 670th dokutan 871 62 5ms 28 Apr 2025 671st inventshah 871 97 63ms 6 May 2022 671st roupiq 🇵🇱 871 97 56ms 22 Nov 2023 673rd janbehrens 🇩🇪 870 90 442ms 21 Apr 2023 673rd Yewzir 🇧🇪 870 90 463ms 22 Apr 2023 673rd DialFrost 🇸🇬 870 90 440ms 6 Nov 2023 First Prev 601–675 of 3,389 Next Last