Card Number Validation 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 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 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 Hilbert Curve Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle 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 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 Groovy Harbour Hare Haxe Hush Hy iogii Knight 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 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 Groovy Harbour Hare Haxe Hush Hy iogii Knight 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 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 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 Hilbert Curve Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial # Golfer Points Bytes Time 448th plcc0 674 118 6 Apr 2025 448th KatieLG 🇬🇧 674 118 20 Apr 2025 448th dirckvdende 674 118 10 Jul 2025 454th BlankSpruce 673 104 1 Oct 2024 455th MeWhenI 🇻🇦 673 108 2 Oct 2024 456th edsrzf 🇳🇿 671 99 5 Jul 2025 457th aDwarfNamedUrist 671 164 16 Oct 2024 458th tailorspy 669 128 4 Oct 2024 459th error256 668 101 24 Oct 2024 460th jtaxen 668 119 21 Oct 2024 460th psbpsbp 668 119 19 Dec 2024 460th klixel 🇨🇦 668 119 9 Apr 2025 463rd Herbert00709 🇵🇱 667 105 14 Jun 2025 464th jwhear 🇺🇸 666 197 1 Oct 2024 465th AlephSquirrel 664 146 14 May 2025 466th TaserTheFox 🇺🇸 663 120 8 Oct 2024 466th yokasuretsu 663 120 26 Jan 2025 466th Troon 663 120 17 Feb 2025 466th keelimeguy 🇺🇸 663 120 14 Jun 2025 470th two-bad 🇬🇧 662 97 2 Oct 2024 470th LordSir101 662 97 10 days ago 472nd CaedenHarper 🇨🇦 660 100 22 Jul 2025 473rd rniii 660 106 2 Oct 2024 473rd gastropner 660 106 11 Feb 2025 475th dbut2 🇦🇺 660 179 31 Oct 2024 476th 4hg 🇺🇸 659 59 5 Oct 2024 477th emgordon154 659 111 12 Jan 2025 478th BREMAUCY 🇫🇷 657 121 18 Jul 2025 479th DialFrost 🇸🇬 656 67 22 Dec 2024 480th xyangst 655 98 15 Oct 2024 480th BambooleanLogic 🇸🇪 655 98 21 Oct 2024 482nd Macweese 655 178 17 days ago 483rd error256 654 142 31 May 2025 484th chartung17 652 122 24 Mar 2025 484th InigoK 🇺🇸 652 122 20 hours ago 486th RyanMHsiao 652 201 1 Oct 2024 487th bac0id 648 180 9 Jan 2025 488th msbranicky 646 123 3 Oct 2024 488th bobbysq 646 123 5 Oct 2024 488th wuzekai518 646 123 8 Oct 2024 488th vhoulbreque 🇫🇷 646 123 4 Feb 2025 492nd w911 646 183 7 Oct 2024 493rd rucin93 🇵🇱 645 144 28 Oct 2024 494th koipondx86 641 123 8 Nov 2024 495th NotEvenIndian 641 124 22 Oct 2024 495th ridingqwerty 🇺🇸 641 124 16 Jan 2025 497th stefangimmillaro 639 73 1 Oct 2024 498th albanian-laundromat 639 149 16 hours ago 499th CaedenHarper 🇨🇦 639 185 3 Jan 2025 500th yoshykai 637 183 12 Apr 2025 501st Jonatan6 🇩🇰 636 110 24 Oct 2024 502nd bnic24 636 125 3 Oct 2024 502nd adoxography 636 125 22 Oct 2024 502nd wh3n3v3r 🇨🇿 636 125 18 Nov 2024 505th elgan65536 636 146 2 Oct 2024 506th albanian-laundromat 634 104 16 days ago 507th Shanethegamer 🇺🇸 631 74 16 Oct 2024 508th XenThe 🇬🇧 630 102 7 Jul 2025 509th msbranicky 628 188 7 Jan 2025 510th CatsAreFluffy 626 127 30 Oct 2024 510th WillowWispy 626 127 25 May 2025 512th AlephSquirrel 625 40 1 Oct 2024 513th tomh1012 622 114 17 Oct 2024 514th dokutan 621 127 10 Dec 2024 515th lelbal 621 128 2 Oct 2024 515th Lv0Sys 🇵🇱 621 128 15 Jun 2025 517th not-a-pokemon 619 113 23 Jul 2025 518th DialFrost 🇸🇬 619 304 7 days ago 519th BalaM314 618 104 4 Feb 2025 519th acollett89 618 104 15 Jul 2025 521st codereport 🇨🇦 617 63 2 Oct 2024 522nd HumanoidCPU 617 107 17 Feb 2025 523rd Schmitt-Very-Cool 617 189 3 Feb 2025 524th madex 🇩🇪 616 129 2 Oct 2024 524th RedzGoose 🇦🇺 616 129 15 Oct 2024 Prev 451–525 of 741 Next