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 Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Multitap Input 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 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript 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 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> ALGOL 68 ArkScript 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 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily 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 Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Multitap Input 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 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 801st HumanoidCPU 492 145 419ms 5 Oct 2024 802nd ibixina 492 162 10ms 13 Oct 2024 802nd TheAtrossian 492 162 13ms 5 Jan 2025 804th h-hh-hhh 🇺🇦 491 177 66ms 2 Nov 2024 805th snoozingnewt 🇨🇦 490 150 198ms 2 Nov 2025 806th snoozingnewt 🇨🇦 490 249 26ms 2 Nov 2025 807th JunkIce 488 136 581ms 3 Dec 2024 808th snoozingnewt 🇨🇦 486 117 1,338ms 2 Nov 2025 809th Vaekor 483 165 11ms 15 Dec 2024 810th mitzal 483 180 61ms 9 Feb 2025 811th snoozingnewt 🇨🇦 482 173 377ms 2 Nov 2025 812th h-hh-hhh 🇺🇦 481 147 1ms 2 Nov 2024 813th MiffOttah 476 150 428ms 6 Oct 2024 813th mwarvik 🇳🇴 476 150 431ms 1 Jan 2026 815th alphafalfa 472 92 2ms 8 Nov 2024 816th JesseNoEyes 🇺🇸 472 169 10ms 1 Oct 2024 817th luca1339 472 198 425ms 4 Nov 2024 818th Maximizer02 471 201 12ms 1 Oct 2024 819th ejini6969 470 102 38ms 14 Jun 2025 820th zyc-2024 🇨🇳 469 170 10ms 5 Oct 2024 821st snoozingnewt 🇨🇦 469 200 230ms 2 Nov 2025 822nd jbjd 468 151 2ms 4 Feb 2026 823rd ComputerKWasTaken 🇺🇸 466 171 11ms 14 Oct 2024 824th snoozingnewt 🇨🇦 465 121 231ms 27 Nov 2025 825th iczelia 🇩🇪 462 94 2ms 23 Sep 2025 826th Jacob385 462 202 411ms 2 Oct 2024 827th madex 🇩🇪 461 104 37ms 2 Oct 2024 828th navier-1 461 173 10ms 22 Sep 2025 829th TheZwierzLF 🇵🇱 456 105 37ms 8 Jan 2026 830th snoozingnewt 🇨🇦 455 149 5ms 2 Nov 2025 831st IISResetMe 453 103 583ms 27 Nov 2025 832nd clayboll99 453 176 11ms 10 Jul 2025 833rd snoozingnewt 🇨🇦 452 96 2ms 2 Nov 2025 834th dokutan 451 63 3ms 26 Nov 2024 835th snoozingnewt 🇨🇦 451 176 2ms 2 Nov 2025 836th muser-logiccpu 🇺🇦 451 177 18ms 9 Aug 2025 837th OSYCh314 🇦🇺 448 178 11ms 2 Nov 2024 838th dokutan 445 109 10ms 19 Oct 2024 839th grey0ut 444 105 402ms 11 Jan 2025 840th calum12345 443 180 11ms 26 Mar 2025 841st MyXoToD 🇩🇪 442 146 11ms 26 May 2025 842nd Yewzir 🇧🇪 442 171 12ms 26 Dec 2024 843rd CheeseCake628 🇳🇴 440 151 532ms 18 Oct 2025 844th zt14427 438 182 10ms 27 Dec 2024 845th IoLimmer 436 183 11ms 10 Oct 2024 846th KatieLG 🇬🇧 433 183 2ms 2 Oct 2025 847th snoozingnewt 🇨🇦 432 111 34ms 2 Nov 2025 848th KatieLG 🇬🇧 431 108 6ms 13 Oct 2024 849th varhammer 431 223 12ms 23 Feb 2025 850th Arkadios200 430 190 111ms 4 days ago 851st estomagordo 🇳🇱 429 186 11ms 15 Jul 2025 852nd dokutan 426 132 356ms 3 Oct 2024 853rd JOrE20 424 136 1,075ms 7 Dec 2025 854th MeWhenI 🇻🇦 424 143 6ms 2 Oct 2024 855th scpchicken 🇵🇼 418 91 160ms 7 days ago 856th aksyristos 411 172 2ms 23 Nov 2025 857th snoozingnewt 🇨🇦 411 267 28ms 18 Dec 2025 858th Mabeloid 🇳🇴 406 159 14ms 12 Oct 2024 859th snoozingnewt 🇨🇦 404 223 96ms 2 Nov 2025 860th ComradeSquirrel 399 200 11ms 12 days ago 861st Ralac07 🇦🇺 398 162 11ms 3 Oct 2024 862nd snoozingnewt 🇨🇦 392 276 40ms 6 Dec 2025 863rd dieggsy 389 247 19ms 10 Oct 2024 864th snoozingnewt 🇨🇦 388 313 40ms 2 Nov 2025 865th fischfood 385 176 6ms 22 Oct 2024 866th JOrE20 385 191 157ms 27 Jan 2026 867th ehulinsky 🇺🇸 384 158 5ms 2 Apr 2025 868th c0d3-4-F00d 🇩🇪 384 184 2ms 9 Jan 2025 869th KatieLG 🇬🇧 375 218 112ms 21 Nov 2025 870th RobGLambert 375 232 1,395ms 8 Jun 2025 871st RedzGoose 🇦🇺 371 187 109ms 2 Oct 2024 872nd P1nk-P0nk 369 215 3ms 18 Oct 2024 873rd gautambp 366 218 11ms 24 Jun 2025 874th snoozingnewt 🇨🇦 360 267 13ms 2 Nov 2025 875th sciencejiho 359 197 2ms 11 Feb 2025 876th The-Wolfson 355 230 110ms 16 Dec 2024 877th Zhenyu-Bo 350 228 11ms 30 Jul 2025 878th EthanJantz 347 230 12ms 5 Sep 2025 879th RobGLambert 344 273 198ms 8 Jun 2025 880th Inbarw100 342 207 2ms 8 days ago First Prev 801–880 of 936 Next Last