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 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 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 Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers 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 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 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 Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Turtle Tutorial # Golfer Points Chars Time 451st DialFrost 🇸🇬 659 181 12 Apr 2025 451st error256 659 181 22 May 2025 453rd NickTheEASDude 🇺🇸 657 105 3 days ago 454th msbranicky 656 95 1 Sep 2024 454th Bulmenisaurus 656 95 4 Sep 2024 454th btjones0 656 95 13 Sep 2024 454th jfallon1997 656 95 26 Sep 2024 454th jacekwladzinski 656 95 3 days ago 459th msbranicky 655 95 8 Jan 2025 460th albanian-laundromat 655 189 26 days ago 461st lukechampine 655 200 7 Jun 2025 461st jerrandolph 655 200 19 days ago 463rd Shanethegamer 🇺🇸 653 135 1 Sep 2024 464th CaedenHarper 🇨🇦 652 201 3 Jan 2025 465th TFeld00 🇩🇰 649 65 3 Sep 2024 466th fgrosshans 🇫🇷 649 96 1 Sep 2024 466th mm1013g 649 96 2 Sep 2024 466th Mikey-Beep 🇬🇧 649 96 2 Sep 2024 466th JudeTyrrell 649 96 22 Sep 2024 470th ShiraJoseph 🇺🇸 649 109 22 Sep 2024 471st voytxt 🇨🇿 646 93 17 Apr 2025 472nd msbranicky 646 203 1 Sep 2024 473rd error256 645 106 18 Apr 2025 474th Waffle3z 645 107 2 Oct 2024 475th stefangimmillaro 643 71 3 Sep 2024 476th mrxz 🇳🇱 643 110 22 Sep 2024 476th weliveinhell 🇭🇹 643 110 28 Sep 2024 478th scpchicken 🇵🇼 642 97 8 Sep 2024 478th Carlettos1 642 97 14 Sep 2024 480th BlankSpruce 639 140 1 Sep 2024 481st aDwarfNamedUrist 638 138 4 Sep 2024 482nd stefangimmillaro 638 151 4 days ago 483rd pickerj 636 98 13 Sep 2024 483rd dtbao20 🇻🇳 636 98 30 Sep 2024 483rd YAJUE114514 636 98 30 Jul 2025 486th Shanethegamer 🇺🇸 634 72 1 Sep 2024 486th anter69 🇭🇺 634 72 25 Oct 2024 488th SirBogman 🇺🇸 634 73 23 Jul 2025 489th stefangimmillaro 634 188 4 Jun 2025 490th Ripick 633 127 6 Sep 2024 491st CaedenHarper 🇨🇦 631 112 22 Aug 2025 492nd olleicua 🇺🇸 630 67 6 Sep 2024 493rd alexeldridge 629 99 14 Sep 2024 493rd Just4FunCoder 629 99 26 days ago 495th BalaM314 626 113 4 Feb 2025 496th cthierfelder 🇲🇨 624 193 5 Sep 2025 497th Kacarott 🇦🇺 623 100 3 Sep 2024 498th SirBogman 🇺🇸 622 59 23 Jul 2025 499th DialFrost 🇸🇬 622 111 22 Nov 2024 500th Shanethegamer 🇺🇸 620 68 1 Sep 2024 500th emgordon154 620 68 1 Sep 2024 500th rvs314 620 68 24 Sep 2024 503rd KrausRaus 🇺🇸 620 114 1 Sep 2024 504th emgordon154 619 41 30 Jul 2025 505th MeWhenI 🇻🇦 619 86 25 days ago 506th lifthrasiir 🇰🇷 618 227 11 Dec 2024 507th madex 🇩🇪 617 101 1 Sep 2024 507th RedzGoose 🇦🇺 617 101 15 Oct 2024 507th Flekay 🇩🇪 617 101 10 Jul 2025 510th Andrey-Plotnikov 615 115 10 days ago 511th aliakseikalosha 612 144 5 Sep 2024 512th sciencejiho 611 102 13 Sep 2024 512th FortuiteMan 🇫🇷 611 102 25 Sep 2024 514th Natanaelel 🇸🇪 611 112 15 May 2025 515th Shanethegamer 🇺🇸 610 102 25 Oct 2024 515th dokutan 610 102 26 Oct 2024 517th BambooleanLogic 🇸🇪 610 116 19 Nov 2024 517th acollett89 610 116 4 Aug 2025 519th msbranicky 606 86 16 Sep 2024 520th emgordon154 606 138 1 Jan 2025 521st julian-hoelz 605 103 16 Sep 2024 521st StefanHabel 🇨🇦 605 103 22 Mar 2025 523rd dokutan 601 76 3 Sep 2024 524th Shanethegamer 🇺🇸 600 134 1 Sep 2024 525th dokutan 600 147 3 Nov 2024 First Prev 451–525 of 665 Next Last