PalindromemordnilaP 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 370th moustave 708 88 10ms 24 Oct 2024 370th andrewjc2000 708 88 12ms 10 Mar 2025 378th JDiLenarda 🇫🇷 708 170 1,342ms 3 Sep 2024 379th alexsave 707 100 10ms 22 Sep 2024 380th emgordon154 706 85 147ms 1 Sep 2024 381st adriweb 🇫🇷 704 98 2ms 4 Sep 2024 381st sean-niemann 🇺🇸 704 98 2ms 5 Sep 2024 381st dokutan 704 98 2ms 14 Sep 2024 384th Shanethegamer 🇺🇸 704 114 136ms 2 Sep 2024 385th ovs-code 🇩🇪 701 128 2ms 1 Sep 2024 386th CaedenHarper 🇨🇦 701 187 238ms 5 hours ago 387th OllieBoyne 🇬🇧 700 89 11ms 9 Sep 2024 387th davecame 700 89 11ms 17 Sep 2024 387th Bmrl7 700 89 10ms 3 Oct 2024 387th DialFrost 🇸🇬 700 89 9ms 21 Nov 2024 391st CaedenHarper 🇨🇦 698 83 514ms 9 Aug 2025 392nd GrayJoKing 🇦🇺 698 86 150ms 2 Sep 2024 392nd dokutan 698 86 122ms 15 Jun 2025 394th MeWhenI 🇻🇦 698 151 42ms 4 Sep 2024 395th frosster 697 99 2ms 21 Mar 2025 396th MostParsingVex 696 154 1,237ms 15 Sep 2024 397th mamamia5x 694 102 11ms 12 Sep 2024 398th sean-niemann 🇺🇸 694 114 102ms 7 Sep 2024 399th elgan65536 693 172 204ms 23 Sep 2024 400th tatzyr 🇯🇵 692 61 36ms 10 Oct 2025 401st sean-niemann 🇺🇸 692 107 4ms 23 Aug 2025 402nd stefangimmillaro 691 90 2,112ms 14 Nov 2024 403rd Shanethegamer 🇺🇸 689 206 33ms 4 Sep 2024 404th retrohun 688 89 106ms 1 Sep 2024 405th BlankSpruce 685 91 15ms 1 Sep 2024 405th ZakkkkAttackkkk 🇵🇭 685 91 11ms 1 Sep 2024 405th BREMAUCY 🇫🇷 685 91 22ms 3 Sep 2024 405th charliegaming 685 91 10ms 7 Sep 2024 405th mbittner20 685 91 10ms 9 Sep 2024 405th neihousaigaai 685 91 10ms 28 Sep 2024 405th Rubiksmath 685 91 10ms 1 Oct 2024 405th jameswmccarty 685 91 15ms 2 Dec 2024 405th croc54 685 91 10ms 12 Jan 2025 405th Pyroan 685 91 14ms 24 Feb 2025 405th WillowWispy 685 91 11ms 21 Mar 2025 405th KasperKivimaeki 🇫🇮 685 91 10ms 3 Jul 2025 405th clayboll99 685 91 11ms 15 Jul 2025 405th CaedenHarper 🇨🇦 685 91 33ms 9 Aug 2025 405th blaztoma 🇱🇹 685 91 11ms 21 Sep 2025 420th GolfingSuccess 🇬🇷 685 131 2ms 1 Sep 2024 421st MeWhenI 🇻🇦 682 88 151ms 1 Sep 2024 421st error256 682 88 136ms 10 Sep 2024 423rd kaascevich 682 116 1,692ms 15 Sep 2025 424th edsrzf 🇳🇿 682 118 361ms 25 Jun 2025 425th emgordon154 682 288 1,681ms 2 Oct 2024 426th DialFrost 🇸🇬 681 62 41ms 30 Jan 2025 426th KatieLG 🇬🇧 681 62 32ms 2 Oct 2025 428th olleicua 🇺🇸 680 104 9ms 11 Sep 2024 429th fourth-bit 678 92 10ms 4 Sep 2024 429th bnic24 678 92 10ms 5 Sep 2024 429th edsrzf 🇳🇿 678 92 4ms 10 Oct 2024 432nd BlankSpruce 678 158 69ms 1 Sep 2024 433rd MeWhenI 🇻🇦 677 117 110ms 2 Sep 2024 433rd stefangimmillaro 677 117 93ms 2 Sep 2024 435th dokutan 675 156 40ms 1 Sep 2024 436th dcgjb 674 69 338ms 11 Sep 2024 437th edsrzf 🇳🇿 674 104 7ms 27 Jan 2025 438th DialFrost 🇸🇬 673 76 16ms 1 Aug 2025 439th madex 🇩🇪 673 177 215ms 17 Sep 2024 440th stefangimmillaro 670 63 34ms 2 Sep 2024 440th SirBogman 🇺🇸 670 63 34ms 5 Sep 2024 442nd adamnielson42 🇺🇸 670 93 10ms 7 Oct 2024 442nd smiksky 🇺🇸 670 93 11ms 16 Oct 2024 442nd guilhem-roy 🇫🇷 670 93 14ms 31 May 2025 445th dokutan 669 78 198ms 3 Sep 2024 446th alicethecatwhisperermeow 669 132 340ms 14 Sep 2024 447th chunes3 🇺🇸 668 112 75ms 1 Sep 2024 448th madeforlosers 667 106 9ms 23 Oct 2024 449th mousetail 🇳🇱 663 94 15ms 1 Sep 2024 449th ljweel 663 94 10ms 12 Sep 2024 First Prev 376–450 of 680 Next Last