Happy Numbers (Long) 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 Minesweeper 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 NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Tower of Hanoi 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 Minesweeper 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 NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Tower of Hanoi Turtle Tutorial # Golfer Points Chars Time Submitted 526th jared-hughes 816 83 148ms 11 Sep 2023 527th Yewzir 🇧🇪 814 107 42ms 14 Jan 2024 528th Mabeloid 🇳🇴 814 122 126ms 3 days ago 529th m-tkach 🇺🇦 813 120 28ms 18 Dec 2023 530th snoozingnewt 🇺🇸 812 66 13ms 1 Sep 2024 530th LostSyntax21 🇬🇧 812 66 4ms 8 Jan 2025 532nd bizy-coder 812 73 610ms 3 Oct 2024 532nd Rubiksmath 812 73 193ms 19 Oct 2024 534th Shanethegamer 🇺🇸 812 90 2ms 9 Oct 2023 534th MeWhenI 🇻🇦 812 90 2ms 10 Oct 2023 536th Shanethegamer 🇺🇸 812 101 481ms 13 Apr 2023 536th emgordon154 812 101 461ms 26 May 2025 538th snoozingnewt 🇺🇸 812 105 97ms 30 Sep 2025 539th janbehrens 🇩🇪 810 73 11ms 20 Sep 2021 539th didion0 🇺🇸 810 73 46ms 23 Nov 2021 539th KatieLG 🇬🇧 810 73 14ms 5 Apr 2022 539th emgordon154 810 73 11ms 7 Nov 2024 543rd edsrzf 🇳🇿 810 88 12ms 7 Jun 2025 544th Shanethegamer 🇺🇸 810 93 129ms 20 Sep 2021 544th Yewzir 🇧🇪 810 93 151ms 27 Mar 2024 546th elgan65536 808 123 124ms 5 Mar 2024 547th MeWhenI 🇻🇦 807 71 67ms 5 Apr 2025 548th targrik 807 81 37ms 18 Jul 2025 549th ovs-code 🇩🇪 806 66 11ms 15 Aug 2024 549th sisyphus-ppcg 🇦🇺 806 66 16ms 19 Aug 2024 551st AdrienHache 🇫🇷 806 94 375ms 2 Jun 2023 551st billings7 🇬🇧 806 94 387ms 21 May 2024 553rd Shanethegamer 🇺🇸 806 100 12ms 10 Sep 2022 554th snyderek 🇺🇸 806 116 81ms 6 Oct 2024 555th kimbo 🇺🇸 806 146 293ms 12 Jan 2023 556th GrayJoKing 🇦🇺 805 94 192ms 23 Oct 2023 557th AlephSquirrel 805 104 4ms 6 Aug 2024 558th MeWhenI 🇻🇦 804 94 64ms 9 May 2024 559th msbranicky 803 91 4ms 11 Oct 2023 560th KenanSi 802 32 5ms 24 Feb 2022 560th ashtraypettingzoo 🇺🇸 802 32 6ms 5 Apr 2023 562nd xnor-gate 801 74 148ms 23 Oct 2023 562nd 4atj 801 74 596ms 30 Jun 2025 562nd csharpython 801 74 20ms 17 Jul 2025 565th AlephSquirrel 801 89 14ms 20 Apr 2023 566th Steffan153 🇫🇮 801 95 20ms 21 Feb 2023 567th jared-hughes 801 124 128ms 10 Nov 2022 567th Re-Adventures 🇮🇳 801 124 127ms 22 Jun 2023 569th frankgraziano 801 232 38ms 3 days ago 570th c0d3-4-F00d 🇩🇪 799 74 13ms 5 Jan 2022 570th Maznek 799 74 14ms 19 Jun 2023 570th thisishowmymindworks 🇳🇴 799 74 134ms 9 Jun 2024 570th snoozingnewt 🇺🇸 799 74 13ms 1 Sep 2024 574th GolfingSuccess 🇬🇷 799 117 56ms 19 Mar 2025 575th GolfingSuccess 🇬🇷 799 172 857ms 19 Jan 2025 576th albanian-laundromat 798 101 12ms 23 Sep 2025 577th inventshah 798 158 411ms 8 Sep 2022 578th brimstonetrader 797 85 139ms 26 Jan 2024 579th Natanaelel 🇸🇪 796 72 78ms 26 Sep 2023 580th clockworknazo 796 83 15ms 13 Oct 2022 580th ovs-code 🇩🇪 796 83 15ms 7 Feb 2023 582nd snoozingnewt 🇺🇸 795 148 266ms 4 Feb 2024 583rd dokutan 794 67 210ms 4 Feb 2025 584th MeWhenI 🇻🇦 794 100 109ms 15 Oct 2022 585th Shanethegamer 🇺🇸 793 29 83ms 22 Jul 2022 586th primo-ppcg 🇹🇭 793 61 402ms 9 Feb 2022 587th DialFrost 🇸🇬 793 63 257ms 21 Jan 2025 588th sisyphus-ppcg 🇦🇺 793 96 14ms 7 Apr 2022 588th DialFrost 🇸🇬 793 96 18ms 31 Oct 2024 588th sean-niemann 🇺🇸 793 96 21ms 9 Apr 2025 588th edsrzf 🇳🇿 793 96 12ms 26 Jul 2025 592nd tailorspy 793 118 79ms 22 Sep 2024 593rd Alessandro-Balconi 🇮🇹 792 77 79ms 14 Jul 2023 594th MeWhenI 🇻🇦 792 110 43ms 17 Feb 2023 595th wh3n3v3r 🇨🇿 791 75 26ms 13 Nov 2024 596th DialFrost 🇸🇬 790 149 279ms 28 Jan 2023 596th LostSyntax21 🇬🇧 790 149 259ms 8 Jan 2025 598th MeWhenI 🇻🇦 789 96 121ms 15 Nov 2022 599th MeWhenI 🇻🇦 789 104 457ms 17 Aug 2023 600th Shanethegamer 🇺🇸 787 84 343ms 15 Jan 2023 First Prev 526–600 of 1,964 Next Last