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 601st Misaka18520 520 206 386ms 14 Sep 2024 602nd error256 515 134 2ms 24 Sep 2024 603rd LostSyntax21 🇬🇧 513 149 10ms 2 Sep 2024 604th CaedenHarper 🇨🇦 512 188 349ms 3 Oct 2025 605th rboath 506 159 92ms 18 Dec 2024 606th h3ra993huskp 🇯🇵 504 191 316ms 27 Dec 2024 607th madex 🇩🇪 502 84 39ms 1 Sep 2024 608th snoozingnewt 🇺🇸 502 141 9ms 27 days ago 609th dbut2 🇦🇺 502 261 267ms 3 Sep 2024 610th LukeBridges 🇬🇧 498 142 11ms 3 Sep 2024 611th MeWhenI 🇻🇦 496 181 2ms 13 Jun 2025 612th snoozingnewt 🇺🇸 495 160 102ms 1 Sep 2024 613th Shanethegamer 🇺🇸 493 115 2ms 1 Sep 2024 614th HunterC14 493 155 10ms 21 Oct 2024 615th madex 🇩🇪 490 183 2ms 2 Sep 2024 616th Naitzirch 🇳🇱 484 158 9ms 3 Jul 2025 617th snoozingnewt 🇺🇸 478 185 360ms 4 Oct 2025 618th junkondo-jp 475 149 8ms 15 Dec 2024 619th snoozingnewt 🇺🇸 475 189 2ms 9 Oct 2025 620th rucin93 🇵🇱 475 251 239ms 5 Sep 2024 621st KatieLG 🇬🇧 475 292 6ms 1 Sep 2024 622nd janAkali 🇷🇺 470 171 344ms 17 May 2025 623rd R4z0rX 465 152 9ms 1 Sep 2024 624th DialFrost 🇸🇬 465 207 348ms 24 Sep 2025 625th Apzyte-Gamer 463 165 12ms 28 Oct 2024 626th iczelia 🇩🇪 462 194 2ms 11 Oct 2025 627th two-bad 🇬🇧 454 156 10ms 4 Oct 2024 628th snoozingnewt 🇺🇸 454 177 86ms 16 days ago 629th CyberTapir 452 169 11ms 1 Sep 2024 630th ravnskjaer 🇩🇰 450 214 313ms 11 Sep 2024 631st msbranicky 443 269 233ms 1 Sep 2024 632nd rollershutter 434 176 11ms 18 Nov 2024 633rd ehulinsky 🇺🇸 430 122 4ms 3 Apr 2025 634th Yax42 🇫🇷 430 224 353ms 5 Oct 2025 635th aksyristos 418 101 35ms 17 Nov 2024 636th MeWhenI 🇻🇦 412 260 76ms 13 Jun 2025 637th bac0id 403 266 2,340ms 10 Jan 2025 638th Jacob385 401 240 313ms 4 Sep 2024 639th zakariamouhid 397 178 10ms 14 Sep 2024 640th galloj 🇨🇿 396 101 8ms 4 Sep 2024 641st dokutan 395 155 246ms 1 Sep 2024 642nd mathisfun271 392 195 11ms 3 Oct 2024 643rd varhammer 🇷🇺 389 235 9ms 19 days ago 644th IISResetMe 366 127 407ms 17 Nov 2024 645th Giantnoodlemonster 365 246 2ms 27 Sep 2024 646th MeWhenI 🇻🇦 363 135 7ms 26 Sep 2024 647th Mikey-Beep 🇬🇧 354 193 19ms 13 Aug 2025 648th AidanWalter 346 221 10ms 3 Jan 2025 649th snoozingnewt 🇺🇸 329 186 8ms 1 Sep 2024 650th timhaj 🇸🇮 320 239 11ms 19 Sep 2024 651st snoozingnewt 🇺🇸 307 209 374ms 1 Sep 2024 652nd nephila-nacrea 🇬🇧 283 132 4ms 4 Sep 2024 653rd KatieLG 🇬🇧 262 459 1,332ms 15 Sep 2024 654th bidger 261 369 312ms 20 Sep 2024 655th KatieLG 🇬🇧 259 460 211ms 15 Sep 2024 656th snoozingnewt 🇺🇸 241 444 1,040ms 6 Oct 2025 657th KatieLG 🇬🇧 200 401 159ms 15 Sep 2024 658th KatieLG 🇬🇧 191 398 8ms 15 Sep 2024 659th KatieLG 🇬🇧 171 768 262ms 15 Sep 2024 660th KatieLG 🇬🇧 112 466 4ms 15 Sep 2024 661st Msleizak 🇫🇷 110 424 254ms 7 Feb 2025 662nd KatieLG 🇬🇧 103 937 303ms 15 Sep 2024 663rd KatieLG 🇬🇧 86 1,032 451ms 15 Sep 2024 664th dokutan 64 1,663 75ms 23 Apr 2025 665th dokutan 54 1,663 2ms 23 Apr 2025 666th darrenks 0 10 65ms 19 Apr 2025 666th lyphyser 0 10 67ms 25 May 2025 668th 2bular 0 11 67ms 23 Mar 2025 668th Natanaelel 🇸🇪 0 11 66ms 25 Mar 2025 668th plcc0 0 11 68ms 5 May 2025 671st kg583 🇺🇸 0 14 212ms 12 Apr 2025 672nd lyxal 🇦🇺 0 19 703ms 17 May 2025 673rd plcc0 0 20 466ms 20 Mar 2025 674th namelessiw 0 21 337ms 3 days ago 675th GolfingSuccess 🇬🇷 0 28 91ms 13 Aug 2025 First Prev 601–675 of 683 Next Last