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 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 Chars Time Submitted 400th chunes3 🇺🇸 737 73 1,046ms 2 Oct 2024 402nd DialFrost 🇸🇬 737 131 7ms 11 Dec 2024 403rd MeWhenI 🇻🇦 735 34 54ms 2 Oct 2024 403rd emgordon154 735 34 62ms 11 Sep 2025 403rd plcc0 735 34 69ms 31 Jan 2026 406th wh3n3v3r 🇨🇿 735 88 11ms 18 Nov 2024 406th blaztoma 🇱🇹 735 88 23ms 8 days ago 408th edsrzf 🇳🇿 734 52 134ms 16 Jan 2026 409th stefangimmillaro 734 94 1ms 30 Oct 2024 409th emgordon154 734 94 2ms 7 Feb 2026 411th error256 734 109 9ms 24 Jul 2025 411th zacjl 734 109 9ms 20 days ago 413th stefangimmillaro 734 114 376ms 13 Oct 2024 414th Shanethegamer 🇺🇸 732 112 109ms 3 Oct 2024 415th MeWhenI 🇻🇦 732 210 1,935ms 15 hours ago 416th Shanethegamer 🇺🇸 731 132 7ms 2 Oct 2024 417th error256 730 98 513ms 17 Jan 2026 418th annaproxy 729 132 15ms 1 Oct 2024 419th Shanethegamer 🇺🇸 727 96 2ms 3 Oct 2024 420th dtbao20 🇻🇳 725 89 11ms 1 Oct 2024 420th madeforlosers 725 89 10ms 17 Oct 2024 420th junkondo-jp 725 89 10ms 14 Dec 2024 420th alexsave 725 89 10ms 20 Jan 2026 424th weeble 724 74 6ms 1 Jul 2025 425th MeWhenI 🇻🇦 724 102 155ms 20 days ago 426th MeWhenI 🇻🇦 723 78 332ms 2 Oct 2024 427th ovs-code 🇩🇪 719 81 133ms 17 Apr 2025 428th snyderek 🇺🇸 719 121 60ms 1 Oct 2024 429th nwellnhof 🇩🇪 718 90 20ms 1 Oct 2024 429th ovs-code 🇩🇪 718 90 18ms 3 Oct 2024 429th luuumine 🇫🇷 718 90 18ms 8 Oct 2025 429th firegene 🇮🇪 718 90 16ms 19 Feb 2026 429th lukegustafson 🇺🇸 718 90 18ms 25 Feb 2026 434th ovs-code 🇩🇪 717 75 1,104ms 1 Oct 2024 435th JOrE20 717 90 10ms 11 Feb 2026 436th CLOStrophobic 🇮🇹 717 160 40ms 27 Feb 2025 437th rzv-me 714 95 6ms 5 Oct 2024 438th MeWhenI 🇻🇦 714 115 453ms 5 Oct 2024 439th h3ra993huskp 🇯🇵 714 131 422ms 30 Nov 2025 440th DialFrost 🇸🇬 713 106 12ms 13 Dec 2024 441st Natanaelel 🇸🇪 711 55 34ms 1 Mar 2025 442nd 5cw 🇺🇸 711 91 17ms 1 Oct 2024 442nd stefangimmillaro 711 91 22ms 13 Oct 2024 442nd GrayJoKing 🇦🇺 711 91 20ms 2 Jul 2025 445th DialFrost 🇸🇬 711 132 229ms 8 Apr 2025 446th GrayJoKing 🇦🇺 710 82 138ms 1 Oct 2024 447th Shanethegamer 🇺🇸 710 156 30ms 2 Oct 2024 448th Shanethegamer 🇺🇸 709 118 376ms 2 Oct 2024 449th edsrzf 🇳🇿 708 76 1,005ms 1 Oct 2024 450th cbrt-x 708 157 139ms 1 Oct 2024 451st BlankSpruce 707 123 419ms 1 Oct 2024 452nd mousetail 🇳🇱 706 133 159ms 3 Oct 2024 453rd janlelis 705 68 36ms 1 Oct 2024 453rd tatzyr 🇯🇵 705 68 40ms 23 Dec 2024 455th emgordon154 705 76 5ms 7 Jun 2025 456th Shanethegamer 🇺🇸 704 101 5ms 2 Oct 2024 457th Shanethegamer 🇺🇸 703 92 18ms 3 Oct 2024 457th error256 703 92 23ms 7 Oct 2024 457th thatbirdguythatuknownot 703 92 20ms 14 Oct 2024 460th Alex-x90 🇺🇸 702 124 453ms 1 Oct 2024 460th Herbert00709 🇵🇱 702 124 62ms 14 Jun 2025 462nd LukeBridges 🇬🇧 701 92 10ms 3 Oct 2024 462nd ComradeSquirrel 701 92 10ms 21 hours ago 464th albanian-laundromat 🇺🇸 700 108 78ms 6 Mar 2026 465th emgordon154 700 134 240ms 25 Feb 2025 466th tobeannouncd 700 159 146ms 13 Dec 2024 467th Bulmenisaurus 695 93 17ms 6 Oct 2024 467th lynn 695 93 17ms 8 Jan 2025 467th RaBa21 🇭🇺 695 93 19ms 19 Jul 2025 467th KasperKivimaeki 🇫🇮 695 93 19ms 30 Nov 2025 471st CaedenHarper 🇨🇦 694 36 45ms 5 days ago 472nd Shanethegamer 🇺🇸 694 83 479ms 5 Oct 2024 473rd xyangst 694 93 13ms 1 Oct 2024 473rd Salutations45 694 93 12ms 17 Nov 2024 473rd strattonwhisler 694 93 10ms 26 Mar 2025 476th Shanethegamer 🇺🇸 693 41 3ms 4 Oct 2024 477th pardouin 🇫🇷 693 57 4ms 3 Oct 2024 478th NickTheEASDude 🇺🇸 691 115 3ms 17 Dec 2024 479th Alex-x90 🇺🇸 690 100 2ms 1 Oct 2024 479th madex 🇩🇪 690 100 2ms 5 days ago First Prev 401–480 of 999 Next Last