Card Number Validation in all languages in chars. 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 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 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 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 Apéry’s Constant Binary Lambda Calculus Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Multitap Input NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> 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 ALGOL 68 APL ArkScript Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> 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 ALGOL 68 APL ArkScript Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight 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 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 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 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 Apéry’s Constant Binary Lambda Calculus Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Multitap Input NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 401st 5cw 🇺🇸 710 91 17ms 1 Oct 2024 401st stefangimmillaro 710 91 16ms 13 Oct 2024 401st dokutan 710 91 10ms 19 Oct 2024 401st GrayJoKing 🇦🇺 710 91 18ms 2 Jul 2025 405th Natanaelel 🇸🇪 709 55 34ms 1 Mar 2025 406th DialFrost 🇸🇬 709 106 11ms 13 Dec 2024 407th GrayJoKing 🇦🇺 707 82 127ms 1 Oct 2024 408th DialFrost 🇸🇬 707 132 225ms 8 Apr 2025 409th Shanethegamer 🇺🇸 706 118 357ms 2 Oct 2024 410th cbrt-x 706 157 139ms 1 Oct 2024 411th MeWhenI 🇻🇦 704 115 435ms 5 Oct 2024 412th janlelis 703 68 43ms 1 Oct 2024 412th tatzyr 🇯🇵 703 68 37ms 23 Dec 2024 414th emgordon154 702 76 5ms 7 Jun 2025 415th Shanethegamer 🇺🇸 702 92 16ms 3 Oct 2024 415th error256 702 92 20ms 7 Oct 2024 415th thatbirdguythatuknownot 702 92 16ms 14 Oct 2024 418th BlankSpruce 702 123 408ms 1 Oct 2024 419th mousetail 🇳🇱 701 133 149ms 3 Oct 2024 420th LukeBridges 🇬🇧 700 92 10ms 3 Oct 2024 421st tobeannouncd 697 159 146ms 13 Dec 2024 422nd Alex-x90 🇺🇸 696 124 407ms 1 Oct 2024 422nd Herbert00709 🇵🇱 696 124 56ms 14 Jun 2025 424th emgordon154 696 134 224ms 25 Feb 2025 425th Bulmenisaurus 695 93 15ms 6 Oct 2024 425th lynn 695 93 16ms 8 Jan 2025 425th RaBa21 🇭🇺 695 93 17ms 19 Jul 2025 425th KasperKivimaeki 🇫🇮 695 93 17ms 30 Nov 2025 425th blaztoma 🇱🇹 695 93 16ms 23 days ago 430th Shanethegamer 🇺🇸 693 41 3ms 4 Oct 2024 431st Shanethegamer 🇺🇸 693 83 463ms 5 Oct 2024 432nd xyangst 692 93 11ms 1 Oct 2024 432nd Salutations45 692 93 11ms 17 Nov 2024 432nd strattonwhisler 692 93 11ms 26 Mar 2025 435th pardouin 🇫🇷 690 57 4ms 3 Oct 2024 436th NickTheEASDude 🇺🇸 688 115 4ms 17 Dec 2024 437th DialFrost 🇸🇬 687 94 15ms 1 Oct 2024 438th dokutan 687 116 7ms 19 Oct 2024 439th MeWhenI 🇻🇦 686 68 244ms 2 Oct 2024 440th Alex-x90 🇺🇸 686 100 2ms 1 Oct 2024 441st error256 686 104 425ms 14 Oct 2024 442nd XenThe 🇬🇧 685 94 10ms 7 Jul 2025 443rd ovs-code 🇩🇪 684 84 489ms 3 Oct 2024 444th aDwarfNamedUrist 684 162 138ms 1 Sep 2025 445th KatieLG 🇬🇧 683 70 36ms 2 Oct 2025 446th MeWhenI 🇻🇦 681 108 154ms 2 Oct 2024 447th the-zammers 680 163 149ms 1 Dec 2024 448th Shanethegamer 🇺🇸 679 65 2ms 1 Oct 2024 449th emgordon154 679 101 2ms 25 Nov 2024 450th Shanethegamer 🇺🇸 677 172 39ms 2 Oct 2024 451st plcc0 676 37 71ms 6 Apr 2025 452nd snoozingnewt 🇨🇦 676 95 79ms 23 Oct 2025 453rd tailorspy 675 128 403ms 4 Oct 2024 454th MeWhenI 🇻🇦 673 96 16ms 30 Jul 2025 455th edsrzf 🇳🇿 673 99 3,137ms 5 Jul 2025 456th jerrandolph 673 177 285ms 25 Sep 2025 456th CaedenHarper 🇨🇦 673 177 278ms 17 Nov 2025 458th HumanoidCPU 670 96 11ms 7 Mar 2025 459th emgordon154 670 115 95ms 9 Dec 2025 460th error256 669 101 6ms 24 Oct 2024 461st Yax42 🇫🇷 669 129 70ms 2 days ago 462nd MeWhenI 🇻🇦 669 174 41ms 13 Feb 2025 463rd madex 🇩🇪 666 103 1ms 2 Oct 2024 464th CaedenHarper 🇨🇦 666 140 692ms 3 Oct 2025 465th dbut2 🇦🇺 666 179 264ms 31 Oct 2024 466th emgordon154 665 111 4ms 12 Jan 2025 467th two-bad 🇬🇧 664 97 11ms 2 Oct 2024 467th LordSir101 664 97 13ms 10 Aug 2025 469th snoozingnewt 🇨🇦 662 180 268ms 2 Nov 2025 470th 4hg 🇺🇸 661 59 34ms 5 Oct 2024 471st BlankSpruce 660 104 2ms 1 Oct 2024 472nd DialFrost 🇸🇬 659 67 2ms 22 Dec 2024 473rd MeWhenI 🇻🇦 659 88 128ms 2 Oct 2024 473rd Shanethegamer 🇺🇸 659 88 148ms 5 Oct 2024 475th GolfingSuccess 🇬🇷 659 98 16ms 5 Oct 2024 475th firegene 🇮🇪 659 98 18ms 21 Oct 2024 475th JunkIce 659 98 10ms 3 Dec 2024 478th BambooleanLogic 🇸🇪 657 98 10ms 21 Oct 2024 479th error256 657 142 154ms 31 May 2025 480th AlephSquirrel 657 146 4ms 14 May 2025 First Prev 401–480 of 855 Next Last