Card Number Validation in all languages in bytes. Achievements Cheevos Holes Languages Medals Miscellaneous 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 Calendar 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 Minesweeper 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 Tower of Hanoi 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 Binary Lambda Calculus Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Multitap Input NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang 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 ArkScript Arturo Befunge BQN CJam CoffeeScript Egel 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 Erlang 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 ArkScript Arturo Befunge BQN CJam CoffeeScript Egel 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 Calendar 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 Minesweeper 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 Tower of Hanoi 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 Binary Lambda Calculus Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Multitap Input NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 721st lhulinsky 508 157 9ms 21 Oct 2024 722nd dokutan 507 126 138ms 22 Jun 2025 723rd ThatAlo 504 158 10ms 9 Dec 2024 724th osNiko 🇧🇷 503 72 49ms 3 days ago 725th snoozingnewt 🇨🇦 503 142 407ms 2 Nov 2025 726th Andrey2001 502 132 629ms 27 Nov 2025 727th msbranicky 501 138 3ms 3 Oct 2024 728th webmiche 501 159 10ms 3 Nov 2025 729th jlangvand 500 141 2ms 15 Oct 2024 729th HumanoidCPU 500 141 1ms 7 Mar 2025 731st blaztoma 🇱🇹 500 154 125ms 28 Nov 2025 732nd MeWhenI 🇻🇦 499 149 69ms 4 Oct 2024 733rd janAkali 🇷🇺 499 167 357ms 8 Oct 2024 734th Mabeloid 🇳🇴 498 133 566ms 2 Oct 2024 735th CheeseCake628 🇳🇴 498 160 102ms 5 Nov 2024 736th pres-abhisheksinha 495 161 10ms 8 Oct 2024 737th HumanoidCPU 492 145 394ms 5 Oct 2024 738th CarterStroik 492 161 2ms 19 Nov 2025 739th ibixina 492 162 9ms 13 Oct 2024 739th TheAtrossian 492 162 10ms 5 Jan 2025 741st TheRealOhead 🇺🇸 491 131 14ms 1 Oct 2024 742nd snoozingnewt 🇨🇦 490 150 154ms 2 Nov 2025 743rd h-hh-hhh 🇺🇦 488 177 65ms 2 Nov 2024 744th JunkIce 487 136 563ms 3 Dec 2024 745th snoozingnewt 🇨🇦 487 249 26ms 2 Nov 2025 746th snoozingnewt 🇨🇦 486 117 904ms 2 Nov 2025 747th Vaekor 483 165 10ms 15 Dec 2024 748th snoozingnewt 🇨🇦 482 173 332ms 2 Nov 2025 749th alphafalfa 480 92 2ms 8 Nov 2024 750th mitzal 480 180 66ms 9 Feb 2025 751st h-hh-hhh 🇺🇦 479 147 2ms 2 Nov 2024 752nd MiffOttah 476 150 423ms 6 Oct 2024 752nd mwarvik 🇳🇴 476 150 421ms 13 days ago 754th JesseNoEyes 🇺🇸 472 169 10ms 1 Oct 2024 755th luca1339 471 198 371ms 4 Nov 2024 756th Maximizer02 471 201 10ms 1 Oct 2024 757th iczelia 🇩🇪 470 94 2ms 23 Sep 2025 758th ejini6969 469 102 37ms 14 Jun 2025 759th zyc-2024 🇨🇳 469 170 9ms 5 Oct 2024 760th ComputerKWasTaken 🇺🇸 466 171 10ms 14 Oct 2024 761st snoozingnewt 🇨🇦 466 200 228ms 2 Nov 2025 762nd snoozingnewt 🇨🇦 464 121 222ms 27 Nov 2025 763rd Jacob385 462 202 358ms 2 Oct 2024 764th navier-1 461 173 11ms 22 Sep 2025 765th snoozingnewt 🇨🇦 460 96 2ms 2 Nov 2025 766th madex 🇩🇪 460 104 39ms 2 Oct 2024 767th TheZwierzLF 🇵🇱 455 105 37ms 6 days ago 768th snoozingnewt 🇨🇦 454 149 6ms 2 Nov 2025 769th IISResetMe 453 103 490ms 27 Nov 2025 770th clayboll99 453 176 10ms 10 Jul 2025 771st dokutan 451 63 3ms 26 Nov 2024 772nd snoozingnewt 🇨🇦 450 176 2ms 2 Nov 2025 773rd Upload-and-View 🇺🇦 450 177 17ms 9 Aug 2025 774th varhammer 🇷🇺 450 223 11ms 23 Feb 2025 775th OSYCh314 🇦🇺 448 178 10ms 2 Nov 2024 776th dokutan 445 109 10ms 19 Oct 2024 777th grey0ut 444 105 425ms 11 Jan 2025 778th calum12345 443 180 10ms 26 Mar 2025 779th MyXoToD 🇩🇪 441 146 9ms 26 May 2025 780th Yewzir 🇧🇪 440 171 12ms 26 Dec 2024 781st CheeseCake628 🇳🇴 439 151 497ms 18 Oct 2025 782nd zt14427 438 182 10ms 27 Dec 2024 783rd IoLimmer 435 183 9ms 10 Oct 2024 784th JOrE20 🇺🇸 434 136 754ms 7 Dec 2025 785th KatieLG 🇬🇧 433 183 2ms 2 Oct 2025 786th aksyristos 433 184 16ms 15 Nov 2024 787th snoozingnewt 🇨🇦 432 267 28ms 27 days ago 788th KatieLG 🇬🇧 431 108 6ms 13 Oct 2024 789th snoozingnewt 🇨🇦 431 111 34ms 2 Nov 2025 790th estomagordo 🇳🇱 428 186 10ms 15 Jul 2025 791st dokutan 425 132 313ms 3 Oct 2024 792nd MeWhenI 🇻🇦 424 143 6ms 2 Oct 2024 793rd Arkadios200 417 196 98ms 21 Oct 2025 794th aksyristos 410 172 2ms 23 Nov 2025 795th dieggsy 406 247 18ms 10 Oct 2024 796th snoozingnewt 🇨🇦 406 313 40ms 2 Nov 2025 797th Mabeloid 🇳🇴 405 159 13ms 12 Oct 2024 798th snoozingnewt 🇨🇦 404 223 119ms 2 Nov 2025 799th Ralac07 🇦🇺 397 162 11ms 3 Oct 2024 800th snoozingnewt 🇨🇦 392 276 40ms 6 Dec 2025 First Prev 721–800 of 863 Next Last