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 ibixina 492 162 10ms 13 Oct 2024 801st TheAtrossian 492 162 13ms 5 Jan 2025 803rd h-hh-hhh 🇺🇦 492 177 66ms 2 Nov 2024 804th JunkIce 488 136 581ms 3 Dec 2024 805th snoozingnewt 🇨🇦 487 117 1,338ms 2 Nov 2025 806th Vaekor 483 165 11ms 15 Dec 2024 807th snoozingnewt 🇨🇦 483 173 377ms 2 Nov 2025 808th mitzal 483 180 61ms 9 Feb 2025 809th h-hh-hhh 🇺🇦 481 147 1ms 2 Nov 2024 810th MiffOttah 477 150 468ms 6 Oct 2024 810th mwarvik 🇳🇴 477 150 484ms 1 Jan 2026 812th Maximizer02 473 201 12ms 1 Oct 2024 813th alphafalfa 472 92 2ms 8 Nov 2024 814th JesseNoEyes 🇺🇸 472 169 10ms 1 Oct 2024 815th luca1339 472 198 425ms 4 Nov 2024 816th ejini6969 470 102 38ms 14 Jun 2025 817th jbjd 469 151 2ms 4 Feb 2026 818th zyc-2024 🇨🇳 469 170 10ms 5 Oct 2024 819th snoozingnewt 🇨🇦 469 200 230ms 2 Nov 2025 820th ComputerKWasTaken 🇺🇸 467 171 11ms 14 Oct 2024 821st snoozingnewt 🇨🇦 466 121 231ms 27 Nov 2025 822nd Jacob385 463 202 411ms 2 Oct 2024 823rd iczelia 🇩🇪 462 94 2ms 23 Sep 2025 824th madex 🇩🇪 461 104 37ms 2 Oct 2024 825th navier-1 461 173 10ms 22 Sep 2025 826th TheZwierzLF 🇵🇱 457 105 37ms 8 Jan 2026 827th snoozingnewt 🇨🇦 455 149 5ms 2 Nov 2025 828th Arkadios200 455 180 109ms 2 days ago 829th IISResetMe 453 103 583ms 27 Nov 2025 830th clayboll99 453 176 11ms 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 11ms 2 Nov 2024 836th dokutan 447 109 10ms 19 Oct 2024 837th grey0ut 444 105 402ms 11 Jan 2025 838th calum12345 443 180 11ms 26 Mar 2025 839th MyXoToD 🇩🇪 442 146 11ms 26 May 2025 840th Yewzir 🇧🇪 442 171 12ms 26 Dec 2024 841st CheeseCake628 🇳🇴 440 151 532ms 18 Oct 2025 842nd zt14427 438 182 10ms 27 Dec 2024 843rd IoLimmer 436 183 11ms 10 Oct 2024 844th KatieLG 🇬🇧 434 183 2ms 2 Oct 2025 845th varhammer 433 223 12ms 23 Feb 2025 846th snoozingnewt 🇨🇦 432 111 34ms 2 Nov 2025 847th KatieLG 🇬🇧 431 108 6ms 13 Oct 2024 848th estomagordo 🇳🇱 429 186 11ms 15 Jul 2025 849th dokutan 427 132 356ms 3 Oct 2024 850th jusaka 426 201 26ms 37 mins ago 851st JOrE20 425 136 1,075ms 7 Dec 2025 852nd MeWhenI 🇻🇦 424 143 6ms 2 Oct 2024 853rd scpchicken 🇵🇼 419 91 160ms 10 days ago 854th ComradeSquirrel 415 192 10ms 84 mins ago 855th snoozingnewt 🇨🇦 415 267 28ms 18 Dec 2025 856th aksyristos 411 172 2ms 23 Nov 2025 857th Mabeloid 🇳🇴 406 159 14ms 12 Oct 2024 858th snoozingnewt 🇨🇦 406 223 96ms 2 Nov 2025 859th jusaka 405 369 1,679ms 3 hours ago 860th Ralac07 🇦🇺 398 162 11ms 3 Oct 2024 861st snoozingnewt 🇨🇦 395 276 40ms 6 Dec 2025 862nd dieggsy 391 247 19ms 10 Oct 2024 863rd snoozingnewt 🇨🇦 390 313 40ms 2 Nov 2025 864th JOrE20 387 191 157ms 27 Jan 2026 865th fischfood 386 176 6ms 22 Oct 2024 866th ehulinsky 🇺🇸 384 158 5ms 2 Apr 2025 867th c0d3-4-F00d 🇩🇪 384 184 2ms 9 Jan 2025 868th KatieLG 🇬🇧 376 218 112ms 21 Nov 2025 869th RobGLambert 375 232 1,395ms 8 Jun 2025 870th RedzGoose 🇦🇺 373 187 109ms 2 Oct 2024 871st P1nk-P0nk 369 215 3ms 18 Oct 2024 872nd gautambp 366 218 11ms 24 Jun 2025 873rd snoozingnewt 🇨🇦 362 267 13ms 2 Nov 2025 874th sciencejiho 359 197 2ms 11 Feb 2025 875th The-Wolfson 356 230 110ms 16 Dec 2024 876th Zhenyu-Bo 350 228 11ms 30 Jul 2025 877th EthanJantz 347 230 12ms 5 Sep 2025 878th RobGLambert 344 273 198ms 8 Jun 2025 879th Inbarw100 342 207 2ms 11 days ago 880th Ernest1338 341 275 297ms 26 Oct 2024 First Prev 801–880 of 976 Next Last