All holes in Ruby in bytes. 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 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 Snake Sphenic Numbers Trinomial Triangle 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 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 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 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 Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial # Golfer Holes Points Bytes Time 526th aliakseikalosha 1 735 68 22 Apr 2022 527th bstrautin 1 727 77 12 Jun 2020 528th dunghopper 1 726 106 26 Oct 2023 529th rholliday 2 726 283 2 Mar 2021 530th McTano 1 725 69 17 Nov 2020 530th peculiarination 1 725 69 3 May 2021 532nd dvargas46 🇺🇸 1 723 119 26 Mar 2022 533rd mothcolada 🇺🇸 8 719 7,142 26 May 2021 534th TheAristos 5 716 4,142 11 Dec 2019 535th lowlighter 1 714 35 1 Nov 2020 535th cefqrn 1 714 35 26 May 2024 537th croc54 1 714 49 10 Dec 2024 538th lux9 1 714 70 5 Oct 2020 538th No-Jons 1 714 70 27 Oct 2020 538th Xyberista 1 714 70 29 Mar 2021 538th dylanarmstrong 1 714 70 18 Dec 2023 538th TheDrawingCoder-Gamer 1 714 70 2 Jul 2025 543rd yrral86 1 710 62 9 Mar 2018 543rd drkameleon 🇪🇸 1 710 62 28 Jan 2020 545th volpi-m 🇫🇷 2 709 2,466 19 Mar 2024 546th RaBa21 🇭🇺 2 708 1,787 19 Jul 2025 547th germania 1 704 71 4 Jan 2020 547th c99zealot 1 704 71 1 Aug 2020 547th SpeedyNinja 1 704 71 20 Oct 2020 547th techeverri 1 704 71 21 Apr 2022 547th DxSper 1 704 71 16 Feb 2024 552nd vrnprkh 1 700 70 30 Mar 2023 553rd olliebaum 1 698 63 12 Jul 2018 554th roguh 🇬🇹 1 688 48 14 Jan 2024 555th rachelambda 1 685 73 7 Jun 2020 556th DragonaireM 1 677 62 6 Feb 2023 556th arctouch-cristiannevianna 1 677 62 20 Oct 2023 556th trinityy-7 1 677 62 29 Jul 2025 559th ted 1 677 65 17 Apr 2018 560th 5quiwyrm 1 676 37 31 Aug 2022 561st aglahir1 1 676 74 5 Nov 2021 562nd joshuaballoch 1 675 292 15 Jan 2020 563rd gfund 1 674 46 5 Oct 2022 564th dymowski 2 671 1,078 15 Jul 2019 565th DmitryArtyomov 1 667 75 25 Apr 2020 566th MichalMarsalek 🇨🇿 2 667 1,048 2 Sep 2022 567th murcielago09z 1 660 50 11 Aug 2025 568th MichaelWarnecke 1 658 76 27 Apr 2020 568th Cobrabb 1 658 76 7 Oct 2021 570th 0dyse 1 656 61 6 May 2025 571st polyrtm 1 644 45 29 Mar 2023 572nd angetheo 1 641 39 19 Jan 2018 572nd okkun-oreo 1 641 39 2 Nov 2020 572nd TheRealOhead 🇺🇸 1 641 39 24 Nov 2022 575th martynas-sm 1 641 78 13 Apr 2021 576th llwwns 1 636 143 1 May 2023 577th th1rt3en 1 633 49 13 May 2018 578th dCSeven 1 629 70 21 Mar 2019 579th kmathis22 1 628 78 5 days ago 580th Heathcorp 🇦🇺 1 625 40 26 Nov 2022 581st Shirish111 1 625 80 12 Sep 2019 581st torokmark 1 625 80 17 Nov 2019 581st javmorin 1 625 80 17 May 2020 581st CodeF53 1 625 80 6 Mar 2025 585th ptarjan 1 620 71 25 Mar 2018 585th alabhyajindal 1 620 71 3 Apr 2025 587th anna328p 1 617 81 22 Feb 2019 587th elisherer 🇮🇱 1 617 81 3 Apr 2019 589th SpareManiKatti 3 611 2,163 19 Apr 2022 590th jacobmichaelis 1 610 82 27 May 2022 590th TEdFlow18 1 610 82 2 Jan 2023 592nd domgetter 1 608 51 10 Jun 2020 593rd nico-bachner 2 605 2,434 28 Dec 2020 594th rtmacaibay 1 602 83 28 Mar 2020 595th p-vf 🇨🇭 1 600 55 25 Oct 2021 596th genius257 1 595 84 29 Mar 2018 596th joesenova 1 595 84 26 Apr 2018 598th youchan 1 588 85 16 Dec 2018 599th basuneko 1 587 46 8 Nov 2017 600th alexandre-lavoie 1 581 86 30 Jul 2020 Prev 526–600 of 781 Next