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 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 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 Gray Code Decoder Gray Code Encoder 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 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 Gray Code Decoder Gray Code Encoder 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 Chars Time Submitted 401st error256 731 109 11ms 24 Jul 2025 402nd stefangimmillaro 731 114 376ms 13 Oct 2024 403rd edsrzf 🇳🇿 730 52 118ms 16 Jan 2026 404th Shanethegamer 🇺🇸 729 112 106ms 3 Oct 2024 405th error256 728 98 436ms 17 Jan 2026 406th dtbao20 🇻🇳 724 89 11ms 1 Oct 2024 406th madeforlosers 724 89 9ms 17 Oct 2024 406th junkondo-jp 724 89 12ms 14 Dec 2024 406th alexsave 724 89 12ms 20 Jan 2026 410th zacjl 724 110 7ms 10 Oct 2024 411th Shanethegamer 🇺🇸 724 126 1,342ms 2 Oct 2024 412th Shanethegamer 🇺🇸 723 96 2ms 3 Oct 2024 413th annaproxy 723 132 15ms 1 Oct 2024 414th MeWhenI 🇻🇦 721 78 316ms 2 Oct 2024 415th MeWhenI 🇻🇦 721 179 1,697ms 7 Nov 2025 416th weeble 720 74 6ms 1 Jul 2025 417th nwellnhof 🇩🇪 718 90 20ms 1 Oct 2024 417th ovs-code 🇩🇪 718 90 17ms 3 Oct 2024 417th luuumine 🇫🇷 718 90 17ms 8 Oct 2025 417th firegene 🇮🇪 718 90 16ms 19 Feb 2026 417th lukegustafson 🇺🇸 718 90 17ms 23 days ago 422nd snyderek 🇺🇸 718 121 61ms 1 Oct 2024 423rd ovs-code 🇩🇪 717 81 144ms 17 Apr 2025 424th JOrE20 716 90 11ms 11 Feb 2026 425th Shanethegamer 🇺🇸 715 101 5ms 2 Oct 2024 426th ovs-code 🇩🇪 714 75 1,104ms 1 Oct 2024 427th rzv-me 713 95 6ms 5 Oct 2024 428th DialFrost 🇸🇬 713 106 12ms 13 Dec 2024 429th h3ra993huskp 🇯🇵 713 131 422ms 30 Nov 2025 430th CLOStrophobic 🇮🇹 712 160 40ms 27 Feb 2025 431st 5cw 🇺🇸 710 91 16ms 1 Oct 2024 431st stefangimmillaro 710 91 16ms 13 Oct 2024 431st GrayJoKing 🇦🇺 710 91 19ms 2 Jul 2025 434th Natanaelel 🇸🇪 709 55 34ms 1 Mar 2025 435th GrayJoKing 🇦🇺 708 82 133ms 1 Oct 2024 436th DialFrost 🇸🇬 708 132 238ms 8 Apr 2025 437th Shanethegamer 🇺🇸 706 118 376ms 2 Oct 2024 438th BlankSpruce 706 123 427ms 1 Oct 2024 439th cbrt-x 706 157 139ms 1 Oct 2024 440th edsrzf 🇳🇿 705 76 1,005ms 1 Oct 2024 441st janlelis 704 68 36ms 1 Oct 2024 441st tatzyr 🇯🇵 704 68 40ms 23 Dec 2024 443rd MeWhenI 🇻🇦 704 115 453ms 5 Oct 2024 444th Shanethegamer 🇺🇸 704 156 30ms 2 Oct 2024 445th Shanethegamer 🇺🇸 703 92 16ms 3 Oct 2024 445th error256 703 92 21ms 7 Oct 2024 445th thatbirdguythatuknownot 703 92 18ms 14 Oct 2024 448th emgordon154 702 76 5ms 7 Jun 2025 449th mousetail 🇳🇱 702 133 169ms 3 Oct 2024 450th LukeBridges 🇬🇧 701 92 10ms 3 Oct 2024 451st Alex-x90 🇺🇸 701 124 435ms 1 Oct 2024 451st Herbert00709 🇵🇱 701 124 61ms 14 Jun 2025 453rd albanian-laundromat 700 108 55ms 15 days ago 454th emgordon154 697 134 241ms 25 Feb 2025 455th tobeannouncd 697 159 146ms 13 Dec 2024 456th Bulmenisaurus 695 93 17ms 6 Oct 2024 456th lynn 695 93 16ms 8 Jan 2025 456th RaBa21 🇭🇺 695 93 17ms 19 Jul 2025 456th KasperKivimaeki 🇫🇮 695 93 17ms 30 Nov 2025 456th blaztoma 🇱🇹 695 93 17ms 18 Dec 2025 461st Shanethegamer 🇺🇸 693 41 3ms 4 Oct 2024 462nd Shanethegamer 🇺🇸 693 83 445ms 5 Oct 2024 463rd xyangst 693 93 13ms 1 Oct 2024 463rd Salutations45 693 93 10ms 17 Nov 2024 463rd strattonwhisler 693 93 10ms 26 Mar 2025 466th pardouin 🇫🇷 691 57 4ms 3 Oct 2024 467th NickTheEASDude 🇺🇸 690 115 3ms 17 Dec 2024 468th DialFrost 🇸🇬 688 94 18ms 1 Oct 2024 469th Alex-x90 🇺🇸 688 100 2ms 1 Oct 2024 470th dokutan 687 116 8ms 19 Oct 2024 471st MeWhenI 🇻🇦 686 68 267ms 2 Oct 2024 472nd XenThe 🇬🇧 686 94 9ms 7 Jul 2025 473rd ovs-code 🇩🇪 685 84 458ms 3 Oct 2024 474th KatieLG 🇬🇧 684 70 37ms 2 Oct 2025 475th aDwarfNamedUrist 684 162 138ms 1 Sep 2025 476th MeWhenI 🇻🇦 681 108 206ms 2 Oct 2024 477th the-zammers 680 163 149ms 1 Dec 2024 478th tailorspy 679 128 440ms 4 Oct 2024 479th GrayJoKing 🇦🇺 678 79 1,204ms 1 Oct 2024 480th snoozingnewt 🇨🇦 676 95 78ms 23 Oct 2025 First Prev 401–480 of 909 Next Last