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 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 Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua 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 Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua 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 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 msbranicky 527 126 9 Jan 2025 602nd galloj 🇨🇿 522 112 4 Oct 2024 603rd adamnielson42 🇺🇸 522 152 6 Oct 2024 603rd voidgloom 522 152 22 Oct 2024 605th xyangst 519 153 1 Oct 2024 605th dirckvdende 519 153 40 hours ago 607th sidok 514 109 13 Nov 2024 608th cdesodt 512 155 16 Oct 2024 609th nephila-nacrea 🇬🇧 509 77 2 Oct 2024 610th dokutan 509 143 19 Oct 2024 611th KatieLG 🇬🇧 509 146 2 Oct 2024 612th dokutan 507 126 9 days ago 613th Chinay-Domitrix 🇺🇸 507 131 30 Mar 2025 614th KatieLG 🇬🇧 506 140 1 Oct 2024 615th lhulinsky 506 157 21 Oct 2024 616th msbranicky 505 138 3 Oct 2024 617th ThatAlo 503 158 9 Dec 2024 618th MeWhenI 🇻🇦 499 149 4 Oct 2024 619th jlangvand 496 141 15 Oct 2024 619th HumanoidCPU 496 141 7 Mar 2025 621st CheeseCake628 🇳🇴 496 160 5 Nov 2024 622nd Mabeloid 🇳🇴 495 133 2 Oct 2024 623rd albanian-laundromat 494 89 5 hours ago 624th pres-abhisheksinha 493 161 8 Oct 2024 625th TheRealOhead 🇺🇸 490 131 1 Oct 2024 626th ibixina 490 162 13 Oct 2024 626th TheAtrossian 490 162 5 Jan 2025 628th HumanoidCPU 488 145 5 Oct 2024 629th JunkIce 484 136 3 Dec 2024 630th h-hh-hhh 🇺🇦 484 177 2 Nov 2024 631st Mabeloid 🇳🇴 482 145 2 Oct 2024 632nd Vaekor 481 165 15 Dec 2024 633rd snoozingnewt 🇺🇸 480 137 27 Jan 2025 634th alphafalfa 477 92 8 Nov 2024 635th KatieLG 🇬🇧 476 108 13 Oct 2024 636th h-hh-hhh 🇺🇦 476 147 2 Nov 2024 637th mitzal 476 180 9 Feb 2025 638th MiffOttah 472 150 6 Oct 2024 639th Maximizer02 472 201 1 Oct 2024 640th JesseNoEyes 🇺🇸 470 169 1 Oct 2024 641st ejini6969 467 102 18 days ago 642nd zyc-2024 🇨🇳 467 170 5 Oct 2024 643rd ComputerKWasTaken 🇺🇸 464 171 14 Oct 2024 644th varhammer 🇷🇺 463 223 23 Feb 2025 645th Yewzir 🇧🇪 460 171 26 Dec 2024 646th madex 🇩🇪 458 104 2 Oct 2024 647th dokutan 451 63 26 Nov 2024 648th IISResetMe 447 104 27 Mar 2025 649th OSYCh314 🇦🇺 446 178 2 Nov 2024 650th dokutan 445 109 19 Oct 2024 651st grey0ut 443 105 11 Jan 2025 652nd calum12345 441 180 26 Mar 2025 653rd MyXoToD 🇩🇪 439 146 26 May 2025 654th zt14427 436 182 27 Dec 2024 655th IoLimmer 434 183 10 Oct 2024 656th aksyristos 432 184 15 Nov 2024 657th dokutan 424 132 3 Oct 2024 658th dieggsy 418 247 10 Oct 2024 659th MeWhenI 🇻🇦 417 143 2 Oct 2024 660th CheeseCake628 🇳🇴 411 160 19 May 2025 661st Mabeloid 🇳🇴 403 159 12 Oct 2024 662nd Ralac07 🇦🇺 396 162 3 Oct 2024 663rd snoozingnewt 🇺🇸 383 176 2 Oct 2024 663rd fischfood 383 176 22 Oct 2024 665th c0d3-4-F00d 🇩🇪 380 184 9 Jan 2025 666th ehulinsky 🇺🇸 378 158 2 Apr 2025 667th RedzGoose 🇦🇺 369 187 2 Oct 2024 668th RobGLambert 369 232 24 days ago 669th P1nk-P0nk 367 215 18 Oct 2024 670th gautambp 364 218 7 days ago 671st sciencejiho 355 197 11 Feb 2025 672nd The-Wolfson 348 230 16 Dec 2024 673rd RobGLambert 340 273 24 days ago 674th Ernest1338 338 275 26 Oct 2024 675th noahhorlacher 336 191 7 Dec 2024 Prev 601–675 of 700 Next