Happy Numbers 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 Binary Lambda Calculus 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 Binary Lambda Calculus 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 825th stefangimmillaro 696 71 9ms 27 Aug 2022 825th SirFireball3521 696 71 9ms 28 Jan 2023 825th Maznek 696 71 12ms 19 Jun 2023 825th KrausRaus 🇺🇸 696 71 10ms 24 days ago 830th msbranicky 696 74 75ms 14 Aug 2023 831st Steffan153 🇫🇮 696 99 54ms 28 Jan 2023 831st ovs-code 🇩🇪 696 99 50ms 3 Jun 2024 831st roupiq 🇵🇱 696 99 54ms 8 Jun 2024 834th xorraxrax 693 68 12ms 19 Oct 2019 834th NewDefectus 🇮🇱 693 68 11ms 1 Nov 2020 834th ydevor 🇮🇱 693 68 10ms 26 Nov 2020 834th jacklynnepenick 693 68 51ms 17 Aug 2021 834th aposteriorist 🇨🇦 693 68 10ms 6 Feb 2022 834th PowerR0 693 68 10ms 25 Aug 2022 834th SB-945 693 68 17ms 31 Mar 2024 834th Troon 693 68 10ms 11 Feb 2025 842nd sisyphus-ppcg 🇦🇺 692 43 2ms 3 Nov 2020 842nd pandapawskat 692 43 3ms 20 Sep 2021 842nd stefangimmillaro 692 43 2ms 23 Apr 2022 845th o0lit3 🇺🇸 692 50 11ms 19 Apr 2021 845th armin-k1 692 50 9ms 8 Sep 2021 847th Alex-x90 🇺🇸 692 76 2ms 3 Dec 2022 848th anter69 🇭🇺 691 55 1,011ms 10 Mar 2025 849th GrayJoKing 🇦🇺 691 61 115ms 13 Mar 2022 850th btnlq 691 63 4ms 15 Jul 2023 851st SirBogman 🇺🇸 690 63 405ms 15 Jan 2024 851st GolfingSuccess 🇬🇷 690 63 336ms 30 Jan 2024 853rd inventshah 690 70 3ms 9 Sep 2022 854th labster 689 45 130ms 23 Feb 2018 855th JDiLenarda 🇫🇷 689 61 1,211ms 9 Oct 2020 856th jared-hughes 689 100 53ms 20 Jul 2022 857th gnuvince 688 32 9ms 2 Aug 2024 857th codereport 🇨🇦 688 32 3ms 21 Apr 2025 859th marshallward 🇺🇸 688 81 41ms 2 Sep 2022 860th JayXon 🇺🇸 688 102 7ms 15 Mar 2023 861st PatrickStephansen 🇿🇦 686 72 13ms 3 Nov 2020 861st KatieLG 🇬🇧 686 72 9ms 16 Apr 2021 861st neihousaigaai 686 72 10ms 18 Apr 2021 861st two-bad 🇬🇧 686 72 11ms 25 Feb 2024 865th MeWhenI 🇻🇦 686 75 40ms 20 Jun 2022 866th rustyflamingo 685 49 551ms 22 Sep 2022 866th antimon2 🇯🇵 685 49 565ms 15 Oct 2022 866th alemelis 685 49 539ms 1 Mar 2023 866th HPWiz 🇳🇿 685 49 554ms 9 Mar 2023 866th ovs-code 🇩🇪 685 49 562ms 24 Oct 2023 866th MarcMush 🇫🇷 685 49 589ms 5 Jan 2024 866th DialFrost 🇸🇬 685 49 541ms 5 Jan 2024 866th twolfive 685 49 552ms 5 Oct 2024 874th DialFrost 🇸🇬 685 93 40ms 16 Feb 2025 875th galloj 🇨🇿 684 107 1ms 28 Aug 2022 876th j-Ewan 683 40 33ms 22 Feb 2022 877th Espiobest 683 69 19ms 26 Feb 2021 877th cbondurant 683 69 10ms 10 May 2021 877th hellwue 683 69 10ms 8 Feb 2023 877th Vaekor 683 69 10ms 9 Jul 2023 877th jatloe 683 69 107ms 27 Sep 2024 882nd sean-niemann 🇺🇸 683 77 2ms 29 Nov 2022 883rd MeWhenI 🇻🇦 682 101 53ms 8 May 2022 883rd janbehrens 🇩🇪 682 101 53ms 26 Nov 2023 885th retrohun 682 191 11ms 27 Dec 2022 886th sisyphus-ppcg 🇦🇺 681 67 4ms 2 Jul 2023 886th targrik 681 67 4ms 17 Jul 2025 888th m-tkach 🇺🇦 680 64 376ms 30 Jan 2024 889th Yewzir 🇧🇪 680 87 2ms 21 Jan 2024 889th rucin93 🇵🇱 680 87 2ms 22 Apr 2025 891st MeWhenI 🇻🇦 679 62 114ms 11 Nov 2021 892nd Irratix 🇳🇱 678 56 1,042ms 25 Mar 2021 892nd emgordon154 678 56 911ms 18 Nov 2024 894th emplv 🇱🇻 678 63 140ms 17 Jul 2025 895th didion0 🇺🇸 677 73 13ms 22 Apr 2021 895th itsh01 677 73 14ms 16 Aug 2021 895th c0d3-4-F00d 🇩🇪 677 73 10ms 5 Jan 2022 895th DaCuteRaccoon 677 73 11ms 30 Nov 2022 895th inventshah 677 73 15ms 28 Jan 2023 895th snoozingnewt 🇺🇸 677 73 13ms 1 Sep 2024 First Prev 826–900 of 3,071 Next Last