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 Dragon Curve 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 Dragon Curve 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 561st MeWhenI 🇻🇦 635 91 1,102ms 29 Aug 2025 562nd msbranicky 635 188 328ms 7 Jan 2025 563rd annaproxy 634 102 18ms 1 Oct 2024 563rd xyangst 634 102 10ms 1 Oct 2024 563rd aksyristos 634 102 19ms 23 days ago 563rd scpchicken 🇵🇼 634 102 17ms 12 days ago 563rd vang1ong7ang 634 102 17ms 4 hours ago 568th DialFrost 🇸🇬 633 304 153ms 13 Aug 2025 569th Shanethegamer 🇺🇸 632 74 290ms 16 Oct 2024 570th Florian-Mt 632 102 11ms 5 Dec 2025 571st robin-scragg 628 103 12ms 21 Aug 2025 572nd Jonatan6 🇩🇰 627 110 2ms 24 Oct 2024 573rd dokutan 626 127 2ms 10 Dec 2024 574th AlephSquirrel 625 40 47ms 1 Oct 2024 575th Ripick 622 135 390ms 23 Mar 2025 576th codereport 🇨🇦 620 63 33ms 2 Oct 2024 577th MarcMush 🇫🇷 620 91 830ms 8 Oct 2024 578th BalaM314 620 104 11ms 4 Feb 2025 578th acollett89 620 104 11ms 15 Jul 2025 580th SirBogman 🇺🇸 619 93 529ms 23 Jul 2025 581st bac0id 617 141 426ms 10 Jan 2025 582nd fourth-bit 616 105 18ms 1 Oct 2024 582nd jared-hughes 616 105 17ms 3 Oct 2024 582nd mattyhempstead 616 105 28ms 7 Oct 2024 585th olleicua 🇺🇸 615 78 38ms 18 Oct 2024 586th evnu 615 147 87ms 12 Oct 2025 587th kaascevich 612 134 126ms 9 Jul 2025 588th not-a-pokemon 611 113 1ms 23 Jul 2025 589th Seanharrs 🇦🇺 611 117 454ms 15 Nov 2024 590th vang1ong7ang 610 41 45ms 7 hours ago 591st davecame 610 106 18ms 1 Oct 2024 591st starfihs 610 106 11ms 2 Oct 2024 591st rschwa6308 🇺🇸 610 106 19ms 28 Oct 2024 591st snydej 610 106 20ms 21 Nov 2024 591st andrewjc2000 610 106 19ms 17 Jul 2025 591st travisdoesmath 610 106 18ms 7 Sep 2025 597th Shanethegamer 🇺🇸 610 154 153ms 3 Oct 2024 598th daveberlin 608 106 11ms 27 Jun 2025 599th albanian-laundromat 🇺🇸 606 72 1ms 25 Feb 2026 600th alemelis 606 93 468ms 1 Oct 2024 601st jupj 🇫🇮 605 114 2ms 20 Jul 2025 602nd commandz0 🇺🇸 604 107 19ms 7 Oct 2024 602nd zbreit 🇺🇸 604 107 18ms 29 Oct 2024 602nd StardustGogeta 604 107 17ms 30 Oct 2024 602nd ZakkkkAttackkkk 🇵🇭 604 107 19ms 8 Feb 2025 602nd InigoK 🇺🇸 604 107 19ms 22 Sep 2025 602nd Lv0Sys 🇵🇱 604 107 19ms 22 Feb 2026 608th dokutan 602 116 2ms 19 Nov 2025 609th neihousaigaai 599 108 19ms 4 Oct 2024 609th StefanHabel 🇨🇦 599 108 20ms 23 Jan 2025 609th CaedenHarper 🇨🇦 599 108 18ms 22 Jul 2025 612th MeWhenI 🇻🇦 597 73 2ms 2 Oct 2024 613th MeWhenI 🇻🇦 597 98 8ms 1 Oct 2024 614th tomh1012 597 108 11ms 12 Mar 2026 615th SirBogman 🇺🇸 596 64 152ms 11 Jul 2025 616th arcpolaris 596 120 433ms 28 Jan 2025 617th DialFrost 🇸🇬 590 67 8ms 25 Jan 2025 618th dokutan 590 98 1,276ms 14 Mar 2026 619th roguh 🇬🇹 590 117 1ms 13 Oct 2024 619th iczelia 🇩🇪 590 117 2ms 25 Sep 2025 621st dokutan 589 174 5ms 21 Feb 2025 622nd JunkIce 588 98 459ms 3 Dec 2024 622nd commandz0 🇺🇸 588 98 508ms 1 Sep 2025 624th cros107 🇦🇺 588 110 18ms 1 Jan 2025 624th guilhem-roy 🇫🇷 588 110 19ms 29 May 2025 626th Schmitt-Very-Cool 588 159 539ms 26 Sep 2025 627th Matter1024 🇮🇳 587 140 462ms 13 days ago 628th gigaprofisi 🇺🇸 586 110 11ms 11 Aug 2025 628th denkyuu1 586 110 11ms 19 days ago 628th RealBen9 🇬🇧 586 110 10ms 7 days ago 631st amazingalek 🇳🇴 586 122 501ms 1 Jan 2026 632nd mousetail 🇳🇱 583 111 20ms 6 Oct 2024 633rd CaedenHarper 🇨🇦 582 99 484ms 8 Mar 2026 634th MeWhenI 🇻🇦 582 111 89ms 2 Oct 2024 635th michelebastione 🇮🇹 582 123 483ms 26 Aug 2025 635th matanberstadt 582 123 442ms 11 days ago 637th MeWhenI 🇻🇦 581 331 15ms 2 Oct 2024 638th emgordon154 580 49 3ms 9 Dec 2025 639th bac0id 580 119 2ms 10 Jan 2025 640th OllieBoyne 🇬🇧 577 112 19ms 17 Oct 2024 First Prev 561–640 of 1,007 Next Last