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 601st JunkIce 548 145 3 Dec 2024 601st Flekay 🇩🇪 548 145 25 days ago 603rd mousetail 🇳🇱 547 94 3 Oct 2024 604th mousetail 🇳🇱 547 128 3 Oct 2024 605th emgordon154 546 52 3 Nov 2024 606th zakariamouhid 544 118 1 Oct 2024 607th croc54 544 146 15 Dec 2024 608th xyangst 543 171 1 Oct 2024 609th dokutan 541 122 19 Oct 2024 610th PyryL 🇫🇮 541 147 1 Mar 2025 611th eranws 540 119 23 Dec 2024 612th najs91 540 131 15 Oct 2024 612th bac0id 540 131 9 Jan 2025 614th mbittner20 537 148 13 Oct 2024 615th Sciman101 536 147 26 Mar 2025 616th psaban 533 149 5 days ago 617th deancureton 531 121 30 Dec 2024 618th msbranicky 531 175 13 Dec 2024 619th FlorianCassayre 🇫🇷 530 150 1 Oct 2024 619th jameswmccarty 530 150 5 Oct 2024 619th yousefalizadeh 530 150 23 Oct 2024 619th feherd 530 150 31 Oct 2024 619th TheZwierzLF 🇵🇱 530 150 17 May 2025 624th msbranicky 527 126 9 Jan 2025 625th adamnielson42 🇺🇸 523 152 6 Oct 2024 625th voidgloom 523 152 22 Oct 2024 627th galloj 🇨🇿 522 112 4 Oct 2024 628th xyangst 519 153 1 Oct 2024 629th sidok 514 109 13 Nov 2024 630th cdesodt 513 155 16 Oct 2024 631st nephila-nacrea 🇬🇧 509 77 2 Oct 2024 632nd dokutan 509 143 19 Oct 2024 633rd KatieLG 🇬🇧 509 146 2 Oct 2024 634th dokutan 507 126 22 Jun 2025 635th Chinay-Domitrix 🇺🇸 507 131 30 Mar 2025 636th msbranicky 507 138 3 Oct 2024 637th KatieLG 🇬🇧 506 140 1 Oct 2024 638th lhulinsky 506 157 21 Oct 2024 639th ThatAlo 503 158 9 Dec 2024 640th albanian-laundromat 499 88 2 Jul 2025 641st MeWhenI 🇻🇦 499 149 4 Oct 2024 642nd CheeseCake628 🇳🇴 497 160 5 Nov 2024 642nd osNiko 🇧🇷 497 160 6 days ago 644th janAkali 🇷🇺 497 167 8 Oct 2024 645th Mabeloid 🇳🇴 496 133 2 Oct 2024 646th jlangvand 496 141 15 Oct 2024 646th HumanoidCPU 496 141 7 Mar 2025 648th pres-abhisheksinha 494 161 8 Oct 2024 649th ibixina 491 162 13 Oct 2024 649th TheAtrossian 491 162 5 Jan 2025 651st TheRealOhead 🇺🇸 490 131 1 Oct 2024 652nd HumanoidCPU 488 145 5 Oct 2024 653rd JunkIce 485 136 3 Dec 2024 654th h-hh-hhh 🇺🇦 484 177 2 Nov 2024 655th Mabeloid 🇳🇴 483 145 2 Oct 2024 656th snoozingnewt 🇺🇸 482 137 27 Jan 2025 657th Vaekor 482 165 15 Dec 2024 657th mossiegoat 482 165 20 days ago 659th alphafalfa 477 92 8 Nov 2024 660th KatieLG 🇬🇧 476 108 13 Oct 2024 661st h-hh-hhh 🇺🇦 476 147 2 Nov 2024 662nd mitzal 476 180 9 Feb 2025 663rd MiffOttah 472 150 6 Oct 2024 664th Maximizer02 471 201 1 Oct 2024 665th JesseNoEyes 🇺🇸 470 169 1 Oct 2024 666th zyc-2024 🇨🇳 468 170 5 Oct 2024 667th ejini6969 467 102 14 Jun 2025 668th ComputerKWasTaken 🇺🇸 465 171 14 Oct 2024 669th Yewzir 🇧🇪 460 171 26 Dec 2024 670th madex 🇩🇪 458 104 2 Oct 2024 671st clayboll99 452 176 26 days ago 672nd dokutan 451 63 26 Nov 2024 673rd IISResetMe 449 104 27 Mar 2025 674th varhammer 🇷🇺 448 223 23 Feb 2025 675th OSYCh314 🇦🇺 447 178 2 Nov 2024 Prev 601–675 of 732 Next