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 h-hh-hhh 🇺🇦 491 177 67ms 2 Nov 2024 802nd snoozingnewt 🇨🇦 490 150 211ms 2 Nov 2025 803rd snoozingnewt 🇨🇦 490 249 26ms 2 Nov 2025 804th JunkIce 488 136 510ms 3 Dec 2024 804th jusaka 488 136 475ms 5 days ago 806th snoozingnewt 🇨🇦 486 117 1,338ms 2 Nov 2025 807th Vaekor 483 165 11ms 15 Dec 2024 808th mitzal 483 180 66ms 9 Feb 2025 809th snoozingnewt 🇨🇦 482 173 377ms 2 Nov 2025 810th h-hh-hhh 🇺🇦 481 147 1ms 2 Nov 2024 811th MiffOttah 476 150 478ms 6 Oct 2024 811th mwarvik 🇳🇴 476 150 431ms 1 Jan 2026 813th alphafalfa 472 92 2ms 8 Nov 2024 814th JesseNoEyes 🇺🇸 472 169 11ms 1 Oct 2024 815th luca1339 472 198 425ms 4 Nov 2024 816th Maximizer02 471 201 12ms 1 Oct 2024 817th ejini6969 470 102 38ms 14 Jun 2025 818th jbjd 469 151 2ms 4 Feb 2026 819th zyc-2024 🇨🇳 469 170 10ms 5 Oct 2024 820th snoozingnewt 🇨🇦 469 200 230ms 2 Nov 2025 821st ComputerKWasTaken 🇺🇸 466 171 10ms 14 Oct 2024 822nd snoozingnewt 🇨🇦 465 121 219ms 27 Nov 2025 823rd Jacob385 463 202 418ms 2 Oct 2024 824th iczelia 🇩🇪 462 94 2ms 23 Sep 2025 825th madex 🇩🇪 461 104 37ms 2 Oct 2024 826th navier-1 461 173 10ms 22 Sep 2025 827th TheZwierzLF 🇵🇱 456 105 37ms 8 Jan 2026 828th snoozingnewt 🇨🇦 455 149 5ms 2 Nov 2025 829th IISResetMe 453 103 583ms 27 Nov 2025 830th clayboll99 453 176 10ms 10 Jul 2025 831st snoozingnewt 🇨🇦 452 96 2ms 2 Nov 2025 832nd dokutan 451 63 3ms 26 Nov 2024 833rd snoozingnewt 🇨🇦 451 176 2ms 2 Nov 2025 834th muser-logiccpu 🇺🇦 451 177 18ms 9 Aug 2025 835th OSYCh314 🇦🇺 448 178 10ms 2 Nov 2024 836th dokutan 445 109 10ms 19 Oct 2024 837th grey0ut 444 105 435ms 11 Jan 2025 838th calum12345 443 180 10ms 26 Mar 2025 839th MyXoToD 🇩🇪 442 146 10ms 26 May 2025 840th Yewzir 🇧🇪 442 171 12ms 26 Dec 2024 841st CheeseCake628 🇳🇴 440 151 521ms 18 Oct 2025 842nd zt14427 438 182 11ms 27 Dec 2024 843rd IoLimmer 436 183 10ms 10 Oct 2024 844th KatieLG 🇬🇧 433 183 2ms 2 Oct 2025 845th snoozingnewt 🇨🇦 432 111 34ms 2 Nov 2025 846th KatieLG 🇬🇧 431 108 6ms 13 Oct 2024 847th varhammer 431 223 14ms 23 Feb 2025 848th estomagordo 🇳🇱 429 186 10ms 15 Jul 2025 849th dokutan 426 132 301ms 3 Oct 2024 850th JOrE20 424 136 1,075ms 7 Dec 2025 851st MeWhenI 🇻🇦 424 143 6ms 2 Oct 2024 852nd scpchicken 🇵🇼 418 91 160ms 2 days ago 853rd Arkadios200 417 196 105ms 21 Oct 2025 854th aksyristos 411 172 2ms 23 Nov 2025 855th snoozingnewt 🇨🇦 411 267 28ms 18 Dec 2025 856th Mabeloid 🇳🇴 405 159 12ms 12 Oct 2024 857th snoozingnewt 🇨🇦 404 223 96ms 2 Nov 2025 858th ComradeSquirrel 399 200 11ms 7 days ago 859th Ralac07 🇦🇺 398 162 13ms 3 Oct 2024 860th snoozingnewt 🇨🇦 392 276 40ms 6 Dec 2025 861st dieggsy 389 247 19ms 10 Oct 2024 862nd snoozingnewt 🇨🇦 388 313 40ms 2 Nov 2025 863rd fischfood 385 176 5ms 22 Oct 2024 864th JOrE20 385 191 169ms 27 Jan 2026 865th ehulinsky 🇺🇸 384 158 5ms 2 Apr 2025 866th c0d3-4-F00d 🇩🇪 384 184 2ms 9 Jan 2025 867th KatieLG 🇬🇧 375 218 114ms 21 Nov 2025 868th RobGLambert 375 232 1,375ms 8 Jun 2025 869th RedzGoose 🇦🇺 371 187 109ms 2 Oct 2024 870th P1nk-P0nk 369 215 3ms 18 Oct 2024 871st gautambp 366 218 11ms 24 Jun 2025 872nd snoozingnewt 🇨🇦 360 267 17ms 2 Nov 2025 873rd sciencejiho 359 197 2ms 11 Feb 2025 874th The-Wolfson 355 230 110ms 16 Dec 2024 875th Zhenyu-Bo 350 228 11ms 30 Jul 2025 876th EthanJantz 347 230 11ms 5 Sep 2025 877th RobGLambert 344 273 198ms 8 Jun 2025 878th Inbarw100 342 207 2ms 3 days ago 879th Ernest1338 341 275 297ms 26 Oct 2024 880th noahhorlacher 338 191 11ms 7 Dec 2024 First Prev 801–880 of 934 Next Last