The Multitap Input hole will go live in approximately 10 hours. Why not try and solve it ahead of time?
PalindromemordnilaP in all languages in bytes. Achievements Cheevos Holes Languages Medals Miscellaneous 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 Calendar 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 Tower of Hanoi 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 Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Multitap Input NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang 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 ArkScript Arturo Befunge BQN CJam CoffeeScript Egel 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 Erlang 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 ArkScript Arturo Befunge BQN CJam CoffeeScript Egel 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 Calendar 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 Tower of Hanoi 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 Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Multitap Input NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 481st MostParsingVex 694 154 1,498ms 15 Sep 2024 482nd sean-niemann 🇺🇸 692 107 2ms 23 Aug 2025 483rd sean-niemann 🇺🇸 691 62 958ms 22 Sep 2025 484th stefangimmillaro 691 90 3,482ms 14 Nov 2024 485th aksyristos 690 111 11ms 1 Sep 2024 485th wh3n3v3r 🇨🇿 690 111 10ms 11 Nov 2024 485th AstroOrbis 690 111 10ms 30 Jun 2025 488th emgordon154 690 288 1,927ms 2 Oct 2024 489th Shanethegamer 🇺🇸 689 206 30ms 4 Sep 2024 490th JunkIce 688 92 477ms 3 Dec 2024 491st GolfingSuccess 🇬🇷 686 131 2ms 1 Sep 2024 492nd kaascevich 685 116 1,645ms 15 Sep 2025 493rd DialFrost 🇸🇬 682 62 37ms 30 Jan 2025 494th olleicua 🇺🇸 681 104 9ms 11 Sep 2024 494th charliegaming 681 104 9ms 28 Nov 2024 496th DialFrost 🇸🇬 681 118 93ms 22 Jun 2025 497th error256 680 63 962ms 20 Dec 2025 498th MeWhenI 🇻🇦 679 117 113ms 2 Sep 2024 498th stefangimmillaro 679 117 100ms 2 Sep 2024 500th edsrzf 🇳🇿 678 92 6ms 10 Oct 2024 501st madex 🇩🇪 678 177 214ms 17 Sep 2024 502nd BlankSpruce 676 158 56ms 1 Sep 2024 503rd dcgjb 674 69 305ms 11 Sep 2024 504th alicethecatwhisperermeow 672 132 447ms 14 Sep 2024 505th stefangimmillaro 671 63 34ms 2 Sep 2024 505th SirBogman 🇺🇸 671 63 37ms 5 Sep 2024 507th madeforlosers 668 106 9ms 23 Oct 2024 508th chunes3 🇺🇸 668 112 64ms 1 Sep 2024 509th voytxt 🇨🇿 665 93 129ms 17 Apr 2025 510th DialFrost 🇸🇬 663 181 203ms 12 Apr 2025 510th error256 663 181 184ms 22 May 2025 512th dokutan 662 79 204ms 3 Sep 2024 513th Maznek 662 107 9ms 8 Oct 2024 513th dokutan 662 107 9ms 5 Jun 2025 515th LeoCh01 660 116 9ms 1 Sep 2024 516th GolfingSuccess 🇬🇷 660 162 407ms 1 Sep 2024 516th ovs-code 🇩🇪 660 162 2,413ms 1 Sep 2024 518th NickTheEASDude 🇺🇸 657 105 2ms 7 Oct 2025 519th Shanethegamer 🇺🇸 657 135 435ms 1 Sep 2024 520th msbranicky 656 136 3ms 1 Sep 2024 521st msbranicky 655 95 3,053ms 8 Jan 2025 522nd albanian-laundromat 655 189 44ms 14 Sep 2025 523rd lukechampine 655 200 258ms 7 Jun 2025 523rd jerrandolph 655 200 248ms 21 Sep 2025 525th Shanethegamer 🇺🇸 651 95 147ms 8 Jan 2025 526th TFeld00 🇩🇰 650 65 35ms 3 Sep 2024 527th ShiraJoseph 🇺🇸 649 109 9ms 22 Sep 2024 528th AlephSquirrel 647 248 3ms 29 Sep 2024 529th msbranicky 646 203 254ms 1 Sep 2024 530th stefangimmillaro 645 71 1,320ms 3 Sep 2024 531st Waffle3z 645 107 2ms 2 Oct 2024 532nd mrxz 🇳🇱 643 110 10ms 22 Sep 2024 532nd weliveinhell 🇭🇹 643 110 10ms 28 Sep 2024 534th Zhenyu-Bo 643 119 11ms 1 Aug 2025 535th BlankSpruce 642 140 2ms 1 Sep 2024 536th stefangimmillaro 642 151 494ms 6 Oct 2025 537th anter69 🇭🇺 640 66 33ms 25 Oct 2024 538th emgordon154 639 113 104ms 4 Dec 2025 539th aDwarfNamedUrist 639 138 119ms 4 Sep 2024 540th lhulinsky 638 120 11ms 23 Oct 2024 540th arjunarya1 638 120 10ms 11 Sep 2025 542nd stefangimmillaro 638 188 207ms 4 Jun 2025 543rd SirBogman 🇺🇸 637 73 311ms 23 Jul 2025 544th Shanethegamer 🇺🇸 636 72 1,301ms 1 Sep 2024 544th anter69 🇭🇺 636 72 1,291ms 25 Oct 2024 546th emgordon154 635 40 3ms 20 Nov 2025 547th weeble 634 77 8ms 21 Dec 2025 548th Ripick 633 127 392ms 6 Sep 2024 549th KatieLG 🇬🇧 632 112 9ms 1 Sep 2024 549th CaedenHarper 🇨🇦 632 112 10ms 22 Aug 2025 551st dokutan 632 120 6ms 1 Sep 2024 551st Shanethegamer 🇺🇸 632 120 7ms 2 Sep 2024 553rd olleicua 🇺🇸 631 67 39ms 6 Sep 2024 554th cthierfelder 🇲🇨 630 193 77ms 5 Sep 2025 555th RedzGoose 🇦🇺 627 101 472ms 15 Oct 2024 556th kevinnaviapaiva 627 122 12ms 16 Feb 2025 557th BalaM314 626 113 9ms 4 Feb 2025 558th kmathis22 626 155 496ms 14 Dec 2025 559th SirBogman 🇺🇸 624 59 120ms 23 Jul 2025 560th DialFrost 🇸🇬 622 111 2ms 22 Nov 2024 First Prev 481–560 of 734 Next Last