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 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 Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters 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 Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Hilbert Curve Mandelbrot Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion QR Encoder Quadratic Formula Scrambled Alphabetization Semiprime Numbers Snake Sphenic Numbers Star Wars GPT 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 Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua 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 Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua 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 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 Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters 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 Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Hilbert Curve Mandelbrot Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion QR Encoder Quadratic Formula Scrambled Alphabetization Semiprime Numbers Snake Sphenic Numbers Star Wars GPT Trinomial Triangle Turtle Tutorial # Golfer Points Bytes Time 526th 823126 571 112 13 Nov 2024 527th emgordon154 568 44 1 Oct 2024 528th FranklinJiaChen 568 141 2 Oct 2024 529th brimstonetrader 564 142 17 Oct 2024 529th snoozingnewt 🇺🇸 564 142 6 days ago 531st KatieLG 🇬🇧 560 85 12 Jan 2025 532nd GeneralFabian 560 143 9 Dec 2024 532nd CutSandstone 560 143 30 Jan 2025 534th aliakseikalosha 557 127 10 Oct 2024 535th hiichbindermax 557 144 2 Oct 2024 535th mathisfun271 557 144 14 Oct 2024 535th bob-th 557 144 22 Oct 2024 538th MeWhenI 🇻🇦 554 290 2 Oct 2024 539th JunkIce 553 145 3 Dec 2024 540th JDiLenarda 🇫🇷 553 165 1 Oct 2024 541st madex 🇩🇪 552 116 1 Oct 2024 542nd edsrzf 🇳🇿 551 135 27 Feb 2025 543rd croc54 549 146 15 Dec 2024 544th KatieLG 🇬🇧 548 120 1 Oct 2024 545th xyangst 548 171 1 Oct 2024 546th mousetail 🇳🇱 547 94 3 Oct 2024 547th msbranicky 547 185 20 Jan 2025 548th emgordon154 546 52 3 Nov 2024 549th mousetail 🇳🇱 546 128 3 Oct 2024 550th PyryL 🇫🇮 545 147 1 Mar 2025 551st zakariamouhid 542 118 1 Oct 2024 552nd mbittner20 542 148 13 Oct 2024 553rd najs91 540 131 15 Oct 2024 553rd bac0id 540 131 9 Jan 2025 555th dokutan 539 122 19 Oct 2024 556th eranws 538 119 23 Dec 2024 557th Sciman101 536 147 11 days ago 558th msbranicky 536 175 13 Dec 2024 559th FlorianCassayre 🇫🇷 534 150 1 Oct 2024 559th jameswmccarty 534 150 5 Oct 2024 559th yousefalizadeh 534 150 23 Oct 2024 559th feherd 534 150 31 Oct 2024 563rd dokutan 531 143 19 Oct 2024 564th deancureton 529 121 30 Dec 2024 565th janAkali 🇷🇺 529 167 8 Oct 2024 566th msbranicky 527 126 9 Jan 2025 567th adamnielson42 🇺🇸 527 152 6 Oct 2024 567th voidgloom 527 152 22 Oct 2024 569th xyangst 524 153 1 Oct 2024 570th galloj 🇨🇿 522 112 4 Oct 2024 571st cdesodt 517 155 16 Oct 2024 572nd sidok 514 109 13 Nov 2024 573rd lhulinsky 511 157 21 Oct 2024 574th nephila-nacrea 🇬🇧 509 77 2 Oct 2024 575th KatieLG 🇬🇧 509 146 2 Oct 2024 576th Chinay-Domitrix 🇺🇸 507 131 7 days ago 577th ThatAlo 507 158 9 Dec 2024 578th KatieLG 🇬🇧 506 140 1 Oct 2024 579th msbranicky 505 138 3 Oct 2024 580th CheeseCake628 🇳🇴 501 160 5 Nov 2024 581st MeWhenI 🇻🇦 499 149 4 Oct 2024 582nd pres-abhisheksinha 498 161 8 Oct 2024 583rd jlangvand 495 141 15 Oct 2024 583rd HumanoidCPU 495 141 7 Mar 2025 585th ibixina 495 162 13 Oct 2024 585th TheAtrossian 495 162 5 Jan 2025 587th Mabeloid 🇳🇴 494 133 2 Oct 2024 588th TheRealOhead 🇺🇸 488 131 1 Oct 2024 589th HumanoidCPU 488 145 5 Oct 2024 590th Vaekor 486 165 15 Dec 2024 591st JunkIce 483 136 3 Dec 2024 592nd h-hh-hhh 🇺🇦 483 177 2 Nov 2024 593rd Mabeloid 🇳🇴 482 145 2 Oct 2024 594th snoozingnewt 🇺🇸 480 137 27 Jan 2025 595th alphafalfa 476 92 8 Nov 2024 596th KatieLG 🇬🇧 476 108 13 Oct 2024 597th h-hh-hhh 🇺🇦 475 147 2 Nov 2024 598th mitzal 475 180 9 Feb 2025 599th JesseNoEyes 🇺🇸 474 169 1 Oct 2024 600th MiffOttah 472 150 6 Oct 2024 Prev 526–600 of 636 Next