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) Taxicab Numbers 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 Dragon Curve Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers Huffman Encoder NFA Simulator Nim Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic 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) Taxicab Numbers 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 Dragon Curve Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers Huffman Encoder NFA Simulator Nim Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 699th RobertHoeh 570 140 10ms 3 Mar 2025 699th smilesformiles3 570 140 18ms 12 Jun 2025 699th artem-aramma 570 140 16ms 18 Jun 2025 699th samnak2 570 140 13ms 26 hours ago 705th janAkali 🇷🇺 569 147 395ms 10 Mar 2026 706th FranklinJiaChen 566 141 13ms 2 Oct 2024 707th KatieLG 🇬🇧 564 85 40ms 12 Jan 2025 708th aliakseikalosha 563 127 488ms 10 Oct 2024 709th brimstonetrader 562 142 16ms 17 Oct 2024 709th codewrite 🇬🇧 562 142 12ms 5 May 2025 709th RobGLambert 562 142 19ms 8 Jun 2025 709th GodlyProgrammer1 562 142 18ms 22 Nov 2025 709th jbjd 562 142 11ms 4 Feb 2026 714th dokutan 561 155 446ms 10 Feb 2026 715th ravnskjaer 🇩🇰 559 167 474ms 15 Dec 2025 716th FortuiteMan 🇫🇷 559 272 44ms 22 Nov 2025 717th GeneralFabian 558 143 10ms 9 Dec 2024 717th CutSandstone 558 143 11ms 30 Jan 2025 717th kistlerf 🇨🇭 558 143 17ms 19 May 2025 720th denkyuu1 557 71 3ms 41 hours ago 721st madex 🇩🇪 556 116 10ms 1 Oct 2024 722nd CaedenHarper 🇨🇦 555 104 747ms 24 Nov 2025 723rd hiichbindermax 554 144 19ms 2 Oct 2024 723rd mathisfun271 554 144 12ms 14 Oct 2024 723rd bob-th 554 144 11ms 22 Oct 2024 723rd cuvam 🇺🇸 554 144 17ms 8 days ago 727th MeWhenI 🇻🇦 554 290 8ms 2 Oct 2024 728th mousetail 🇳🇱 553 128 2ms 3 Oct 2024 729th denkyuu1 552 102 350ms 19 days ago 730th snoozingnewt 🇨🇦 552 148 132ms 20 Nov 2025 731st msbranicky 552 185 4ms 20 Jan 2025 732nd edsrzf 🇳🇿 551 135 6ms 27 Feb 2025 733rd gpikmddk 550 130 599ms 30 Oct 2025 734th JunkIce 550 145 10ms 3 Dec 2024 735th ethanlally 549 170 439ms 19 Nov 2025 735th snoozingnewt 🇨🇦 549 170 486ms 5 Dec 2025 737th Matter1024 🇮🇳 548 149 437ms 22 Mar 2026 738th xyangst 548 171 179ms 1 Oct 2024 739th zakariamouhid 546 118 13ms 1 Oct 2024 740th najs91 546 131 401ms 15 Oct 2024 740th bac0id 546 131 444ms 9 Jan 2025 740th CaedenHarper 🇨🇦 546 131 409ms 17 Oct 2025 743rd croc54 546 146 11ms 15 Dec 2024 744th kmathis22 546 171 424ms 19 Nov 2025 745th JDiLenarda 🇫🇷 544 165 1,630ms 1 Oct 2024 746th PyryL 🇫🇮 543 147 11ms 1 Mar 2025 747th eranws 542 119 10ms 23 Dec 2024 748th dokutan 540 131 2ms 10 Feb 2026 749th dokutan 539 107 810ms 12 Mar 2026 750th Sciman101 539 147 2ms 26 Mar 2025 751st mbittner20 539 148 10ms 13 Oct 2024 751st YAJUE114514 539 148 10ms 12 Dec 2025 753rd msbranicky 536 175 161ms 13 Dec 2024 754th psaban 535 149 18ms 31 Jul 2025 754th TheZwierzLF 🇵🇱 535 149 11ms 24 Nov 2025 754th RodAlc24 🇪🇸 535 149 18ms 22 Feb 2026 757th JRaspass 🇬🇧 534 74 3ms 24 Mar 2026 758th deancureton 533 121 11ms 30 Dec 2024 759th FlorianCassayre 🇫🇷 532 150 18ms 1 Oct 2024 759th jameswmccarty 532 150 11ms 5 Oct 2024 759th yousefalizadeh 532 150 11ms 23 Oct 2024 759th feherd 532 150 10ms 31 Oct 2024 759th kadamkaustubh 532 150 11ms 8 Nov 2025 764th msbranicky 530 126 2,384ms 9 Jan 2025 765th Protothor 529 122 10ms 10 Mar 2026 766th adamnielson42 🇺🇸 525 152 10ms 6 Oct 2024 766th voidgloom 525 152 11ms 22 Oct 2024 766th omero-san 525 152 10ms 22 Sep 2025 766th brochmann 🇸🇪 525 152 10ms 12 Oct 2025 770th Macweese 525 178 436ms 3 Aug 2025 771st isaiah0311 🇺🇸 524 135 2ms 9 Feb 2026 772nd galloj 🇨🇿 522 112 22ms 4 Oct 2024 773rd TheZwierzLF 🇵🇱 522 127 505ms 12 Dec 2025 774th xyangst 521 153 10ms 1 Oct 2024 774th denisfouchard 521 153 10ms 21 Aug 2025 776th snoozingnewt 🇨🇦 520 213 138ms 2 Nov 2025 777th bac0id 519 180 392ms 9 Jan 2025 778th osNiko 🇧🇷 518 154 11ms 21 Aug 2025 779th sidok 516 109 235ms 13 Nov 2024 780th robin-scragg 515 155 11ms 21 Aug 2025 780th celiendonze 🇨🇭 515 155 11ms 17 Oct 2025 782nd Andrey2001 514 129 549ms 1 Feb 2026 783rd dokutan 514 143 210ms 19 Oct 2024 784th nephila-nacrea 🇬🇧 513 77 4ms 2 Oct 2024 785th KatieLG 🇬🇧 511 140 431ms 1 Oct 2024 786th travisdoesmath 511 156 11ms 7 Sep 2025 786th Shotokhan 511 156 10ms 21 Sep 2025 788th yoshykai 510 183 406ms 12 Apr 2025 789th Chinay-Domitrix 🇺🇸 509 131 2,441ms 30 Mar 2025 790th KatieLG 🇬🇧 509 146 9ms 2 Oct 2024 791st dokutan 508 126 141ms 22 Jun 2025 792nd lhulinsky 508 157 11ms 21 Oct 2024 793rd ellis-rix 505 158 11ms 9 Dec 2024 794th msbranicky 504 138 3ms 3 Oct 2024 795th snoozingnewt 🇨🇦 504 142 471ms 2 Nov 2025 796th osNiko 🇧🇷 503 72 57ms 11 Jan 2026 797th jlangvand 502 141 1ms 15 Oct 2024 797th HumanoidCPU 502 141 1ms 7 Mar 2025 799th webmiche 502 159 11ms 3 Nov 2025 800th blaztoma 🇱🇹 500 154 119ms 28 Nov 2025 First Prev 701–800 of 947 Next Last