PalindromemordnilaP in all languages 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 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 Bytes Time Submitted 225th uttumuttu 🇫🇮 842 84 9ms 30 Sep 2024 225th didion0 🇺🇸 842 84 9ms 30 May 2025 228th error256 842 94 106ms 1 Sep 2024 229th Kacarott 🇦🇺 841 89 70ms 1 Sep 2024 230th BlankSpruce 840 91 15ms 1 Sep 2024 230th KatieLG 🇬🇧 840 91 11ms 1 Sep 2024 230th ZakkkkAttackkkk 🇵🇭 840 91 11ms 1 Sep 2024 230th BREMAUCY 🇫🇷 840 91 22ms 3 Sep 2024 230th charliegaming 840 91 10ms 7 Sep 2024 230th mbittner20 840 91 10ms 9 Sep 2024 230th neihousaigaai 840 91 10ms 28 Sep 2024 230th Rubiksmath 840 91 10ms 1 Oct 2024 230th lifthrasiir 🇰🇷 840 91 11ms 20 Nov 2024 230th jameswmccarty 840 91 15ms 2 Dec 2024 230th croc54 840 91 10ms 12 Jan 2025 230th Pyroan 840 91 14ms 24 Feb 2025 230th plcc0 840 91 11ms 6 Mar 2025 230th WillowWispy 840 91 11ms 21 Mar 2025 230th keelimeguy 🇺🇸 840 91 13ms 17 May 2025 230th albanian-laundromat 840 91 11ms 5 Jun 2025 230th KasperKivimaeki 🇫🇮 840 91 10ms 3 Jul 2025 230th clayboll99 840 91 11ms 15 Jul 2025 230th CaedenHarper 🇨🇦 840 91 33ms 9 Aug 2025 230th blaztoma 🇱🇹 840 91 11ms 21 Sep 2025 250th AlephSquirrel 839 109 8ms 18 Feb 2025 251st Shanethegamer 🇺🇸 838 96 126ms 24 May 2025 252nd Shanethegamer 🇺🇸 836 202 1,938ms 1 Mar 2025 253rd sean-niemann 🇺🇸 834 74 135ms 4 Aug 2025 254th xnor-gate 834 82 19ms 5 Mar 2025 255th nwellnhof 🇩🇪 833 48 4ms 1 Sep 2024 256th MeWhenI 🇻🇦 832 75 4ms 3 Sep 2024 257th JayXon 🇺🇸 832 77 302ms 18 Jun 2025 258th dokutan 831 92 11ms 3 Sep 2024 258th fourth-bit 831 92 10ms 4 Sep 2024 258th bnic24 831 92 10ms 5 Sep 2024 261st nwellnhof 🇩🇪 831 108 2ms 10 Sep 2024 262nd JayXon 🇺🇸 831 111 413ms 20 Sep 2024 263rd MeWhenI 🇻🇦 830 45 4ms 1 Sep 2024 264th MeWhenI 🇻🇦 830 55 1,041ms 1 Sep 2024 264th Natanaelel 🇸🇪 830 55 991ms 1 Sep 2024 266th Shanethegamer 🇺🇸 830 145 1,291ms 4 Sep 2024 266th m-tkach 🇺🇦 830 145 67ms 27 Sep 2024 268th MeWhenI 🇻🇦 829 75 2,130ms 24 Oct 2024 268th duckyluuk 🇳🇱 829 75 2,159ms 25 Oct 2024 270th emgordon154 825 59 11ms 15 Nov 2024 271st error256 825 146 1,281ms 2 May 2025 272nd sean-niemann 🇺🇸 824 118 3ms 16 Jan 2025 273rd emplv 🇱🇻 824 159 263ms 18 Sep 2024 273rd 0xjac 🇨🇭 824 159 263ms 19 Jun 2025 275th duckyluuk 🇳🇱 823 86 9ms 1 Sep 2024 276th sean-niemann 🇺🇸 823 112 444ms 4 Sep 2024 277th adamnielson42 🇺🇸 822 93 10ms 7 Oct 2024 277th guilhem-roy 🇫🇷 822 93 14ms 31 May 2025 279th xsot 🇸🇬 821 76 4ms 3 Sep 2024 280th emgordon154 821 77 474ms 22 Nov 2024 281st MeWhenI 🇻🇦 821 98 332ms 2 Sep 2024 282nd rak1507 🇬🇧 819 31 2ms 11 Sep 2024 283rd sean-niemann 🇺🇸 819 151 42ms 16 Jan 2025 284th duckyluuk 🇳🇱 817 52 6ms 13 Dec 2024 285th kg583 🇺🇸 816 112 8ms 9 May 2025 286th canissimia 🇦🇶 816 116 13ms 4 Sep 2024 287th m-tkach 🇺🇦 816 170 381ms 15 Jan 2025 288th GrayJoKing 🇦🇺 814 84 18ms 1 Sep 2024 288th annaproxy 814 84 29ms 22 Oct 2024 290th mousetail 🇳🇱 813 94 15ms 1 Sep 2024 290th ljweel 813 94 10ms 12 Sep 2024 290th jtaxen 813 94 10ms 26 Sep 2024 290th qpwoeirut 813 94 12ms 7 Feb 2025 294th rucin93 🇵🇱 812 76 131ms 31 Oct 2024 295th ovs-code 🇩🇪 811 52 35ms 1 Sep 2024 296th error256 811 99 124ms 4 Sep 2024 297th tomtheisen 🇺🇸 811 109 377ms 8 Nov 2024 298th error256 810 77 4ms 1 Sep 2024 299th alemelis 810 78 425ms 1 Sep 2024 299th Shanethegamer 🇺🇸 810 78 449ms 1 Sep 2024 First Prev 226–300 of 682 Next Last