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 481st DialFrost 🇸🇬 711 132 229ms 8 Apr 2025 482nd MeWhenI 🇻🇦 710 115 453ms 5 Oct 2024 483rd Natanaelel 🇸🇪 709 55 34ms 1 Mar 2025 484th snoozingnewt 🇨🇦 709 95 78ms 23 Oct 2025 485th Alex-x90 🇺🇸 707 100 2ms 1 Oct 2024 486th SB-945 706 113 17ms 1 Oct 2024 486th Artemis21 🇬🇧 706 113 17ms 23 Jan 2025 486th fkantelberg 706 113 10ms 11 Jul 2025 489th Shanethegamer 🇺🇸 706 118 376ms 2 Oct 2024 490th BlankSpruce 706 123 439ms 1 Oct 2024 491st mousetail 🇳🇱 706 133 159ms 3 Oct 2024 492nd cbrt-x 706 157 139ms 1 Oct 2024 493rd Shanethegamer 🇺🇸 706 172 39ms 2 Oct 2024 494th edsrzf 🇳🇿 705 76 1,005ms 1 Oct 2024 495th janlelis 704 68 36ms 1 Oct 2024 496th Shanethegamer 🇺🇸 704 156 30ms 2 Oct 2024 497th emgordon154 702 76 5ms 7 Jun 2025 498th LukeBridges 🇬🇧 701 92 10ms 3 Oct 2024 499th Alex-x90 🇺🇸 701 124 453ms 1 Oct 2024 499th Herbert00709 🇵🇱 701 124 61ms 14 Jun 2025 501st albanian-laundromat 🇺🇸 700 108 55ms 6 Mar 2026 502nd HumanoidCPU 700 114 63ms 7 Mar 2025 503rd emgordon154 700 134 240ms 25 Feb 2025 504th Shanethegamer 🇺🇸 699 101 5ms 2 Oct 2024 505th tobeannouncd 697 159 146ms 13 Dec 2024 506th MeWhenI 🇻🇦 697 174 41ms 13 Feb 2025 507th jipsong 🇩🇪 694 115 16ms 12 May 2025 507th luuumine 🇫🇷 694 115 17ms 2 Dec 2025 507th Bmrl7 694 115 10ms 25 Dec 2025 510th Shanethegamer 🇺🇸 693 41 3ms 4 Oct 2024 511th pardouin 🇫🇷 693 57 4ms 3 Oct 2024 512th Salutations45 693 93 10ms 17 Nov 2024 512th strattonwhisler 693 93 10ms 26 Mar 2025 512th JOrE20 693 93 10ms 12 Feb 2026 515th NickTheEASDude 🇺🇸 690 115 3ms 17 Dec 2024 516th rowechenzhong 688 116 10ms 17 Oct 2024 517th madex 🇩🇪 687 103 1ms 2 Oct 2024 517th solisolu 687 103 3ms 4 days ago 519th MeWhenI 🇻🇦 686 68 267ms 2 Oct 2024 520th aDwarfNamedUrist 684 162 138ms 1 Sep 2025 521st CatsAreFluffy 683 53 71ms 27 Dec 2024 522nd dtbao20 🇻🇳 682 117 18ms 1 Oct 2024 522nd Pyroan 682 117 17ms 22 Feb 2025 522nd vgamula 🇺🇦 682 117 16ms 5 Aug 2025 522nd FortuiteMan 🇫🇷 682 117 17ms 1 Dec 2025 522nd yujqiao 682 117 17ms 16 Dec 2025 527th BlankSpruce 680 104 2ms 1 Oct 2024 528th the-zammers 680 163 149ms 1 Dec 2024 529th tailorspy 679 128 475ms 4 Oct 2024 530th GrayJoKing 🇦🇺 678 79 1,204ms 1 Oct 2024 531st commandz0 🇺🇸 677 98 505ms 1 Sep 2025 532nd elgan65536 🇺🇸 676 118 11ms 2 Oct 2024 532nd logvp 676 118 17ms 6 Oct 2024 532nd ahmetdemirag 🇨🇾 676 118 10ms 6 Feb 2025 532nd dirckvdende 676 118 17ms 10 Jul 2025 536th jkelly467 674 99 2,591ms 22 Jan 2026 537th Herbert00709 🇵🇱 674 105 2ms 14 Jun 2025 538th Yax42 🇫🇷 674 129 73ms 8 Jan 2026 538th emgordon154 674 129 59ms 8 Feb 2026 540th GolfingSuccess 🇬🇷 674 174 34ms 12 days ago 541st jerrandolph 673 177 295ms 25 Sep 2025 541st CaedenHarper 🇨🇦 673 177 312ms 17 Nov 2025 543rd CaedenHarper 🇨🇦 671 99 425ms 8 Mar 2026 544th error256 671 101 5ms 24 Oct 2024 545th emgordon154 670 115 111ms 9 Dec 2025 546th jtaxen 670 119 17ms 21 Oct 2024 546th psbpsbp 670 119 10ms 19 Dec 2024 546th klixel 🇨🇦 670 119 10ms 9 Apr 2025 546th vhoulbreque 🇫🇷 670 119 9ms 21 Nov 2025 550th Shanethegamer 🇺🇸 668 65 1ms 1 Oct 2024 551st CaedenHarper 🇨🇦 668 140 571ms 3 Oct 2025 552nd rniii 667 106 1ms 2 Oct 2024 552nd gastropner 667 106 2ms 11 Feb 2025 554th dbut2 🇦🇺 666 179 284ms 31 Oct 2024 555th two-bad 🇬🇧 665 97 12ms 2 Oct 2024 555th LordSir101 665 97 11ms 10 Aug 2025 557th TaserTheFox 🇺🇸 665 120 17ms 8 Oct 2024 557th yokasuretsu 665 120 11ms 26 Jan 2025 557th Troon 665 120 11ms 17 Feb 2025 557th keelimeguy 🇺🇸 665 120 18ms 14 Jun 2025 First Prev 481–560 of 934 Next Last