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 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 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 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 Lily 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 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 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 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 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 721st snoozingnewt 🇨🇦 466 200 217ms 2 Nov 2025 722nd scpchicken 🇵🇼 465 139 17ms 6 Oct 2024 722nd tomh1012 465 139 19ms 16 Jan 2026 724th snoozingnewt 🇨🇦 464 121 229ms 27 Nov 2025 725th iczelia 🇩🇪 462 94 2ms 23 Sep 2025 726th NanduBC 462 140 13ms 1 Oct 2024 726th jmerle 🇳🇱 462 140 14ms 10 Jan 2025 726th RobertHoeh 462 140 12ms 3 Mar 2025 726th smilesformiles3 462 140 17ms 12 Jun 2025 726th artem-aramma 462 140 18ms 18 Jun 2025 731st Jacob385 462 202 418ms 2 Oct 2024 732nd madex 🇩🇪 460 104 38ms 2 Oct 2024 733rd FranklinJiaChen 458 141 10ms 2 Oct 2024 734th TheZwierzLF 🇵🇱 456 105 38ms 8 Jan 2026 735th jbjd 456 151 3ms 12 days ago 736th brimstonetrader 455 142 11ms 17 Oct 2024 736th codewrite 🇬🇧 455 142 10ms 5 May 2025 736th RobGLambert 455 142 18ms 8 Jun 2025 736th GodlyProgrammer1 455 142 19ms 22 Nov 2025 736th jbjd 455 142 13ms 12 days ago 741st snoozingnewt 🇨🇦 455 149 4ms 2 Nov 2025 742nd IISResetMe 453 103 590ms 27 Nov 2025 743rd TheZwierzLF 🇵🇱 453 127 507ms 12 Dec 2025 744th snoozingnewt 🇨🇦 452 96 2ms 2 Nov 2025 745th GeneralFabian 452 143 11ms 9 Dec 2024 745th CutSandstone 452 143 10ms 30 Jan 2025 745th kistlerf 🇨🇭 452 143 19ms 19 May 2025 748th dokutan 451 63 3ms 26 Nov 2024 749th snoozingnewt 🇨🇦 451 176 2ms 2 Nov 2025 750th hiichbindermax 449 144 17ms 2 Oct 2024 750th mathisfun271 449 144 10ms 14 Oct 2024 750th bob-th 449 144 10ms 22 Oct 2024 753rd Andrey2001 446 129 525ms 15 days ago 754th denkyuu1 446 145 17ms 5 days ago 755th dokutan 445 109 10ms 19 Oct 2024 756th grey0ut 444 105 472ms 11 Jan 2025 757th croc54 443 146 10ms 15 Dec 2024 758th varhammer 🇷🇺 443 223 11ms 23 Feb 2025 759th MyXoToD 🇩🇪 441 146 12ms 26 May 2025 760th PyryL 🇫🇮 440 147 10ms 1 Mar 2025 761st Yewzir 🇧🇪 440 171 13ms 26 Dec 2024 762nd mbittner20 437 148 11ms 13 Oct 2024 762nd YAJUE114514 437 148 11ms 12 Dec 2025 764th psaban 434 149 15ms 31 Jul 2025 764th TheZwierzLF 🇵🇱 434 149 11ms 24 Nov 2025 766th KatieLG 🇬🇧 433 183 2ms 2 Oct 2025 767th dokutan 432 130 289ms 17 Oct 2024 768th Mabeloid 🇳🇴 432 133 538ms 2 Oct 2024 769th KatieLG 🇬🇧 431 108 6ms 13 Oct 2024 770th snoozingnewt 🇨🇦 431 111 38ms 2 Nov 2025 771st jameswmccarty 431 150 11ms 5 Oct 2024 771st yousefalizadeh 431 150 10ms 23 Oct 2024 771st feherd 431 150 14ms 31 Oct 2024 771st kadamkaustubh 431 150 10ms 8 Nov 2025 775th adamnielson42 🇺🇸 425 152 10ms 6 Oct 2024 775th voidgloom 425 152 11ms 22 Oct 2024 775th omero-san 425 152 12ms 22 Sep 2025 775th brochmann 🇸🇪 425 152 10ms 12 Oct 2025 779th MeWhenI 🇻🇦 424 143 6ms 2 Oct 2024 780th JOrE20 423 136 1,021ms 7 Dec 2025 781st denisfouchard 422 153 10ms 21 Aug 2025 782nd osNiko 🇧🇷 420 154 9ms 21 Aug 2025 783rd celiendonze 🇨🇭 417 155 10ms 17 Oct 2025 784th Arkadios200 417 196 98ms 21 Oct 2025 785th Shotokhan 414 156 10ms 21 Sep 2025 786th lhulinsky 412 157 10ms 21 Oct 2024 787th snoozingnewt 🇨🇦 411 267 28ms 18 Dec 2025 788th ThatAlo 409 158 10ms 9 Dec 2024 789th webmiche 406 159 12ms 3 Nov 2025 790th Mabeloid 🇳🇴 405 159 9ms 12 Oct 2024 791st CheeseCake628 🇳🇴 404 160 104ms 5 Nov 2024 792nd snoozingnewt 🇨🇦 404 223 82ms 2 Nov 2025 793rd pres-abhisheksinha 401 161 10ms 8 Oct 2024 794th aksyristos 400 172 2ms 23 Nov 2025 795th dieggsy 400 247 18ms 10 Oct 2024 796th ibixina 399 162 11ms 13 Oct 2024 796th TheAtrossian 399 162 11ms 5 Jan 2025 798th Ralac07 🇦🇺 397 162 12ms 3 Oct 2024 799th Maximizer02 396 201 11ms 1 Oct 2024 800th Vaekor 392 165 11ms 15 Dec 2024 First Prev 721–800 of 885 Next Last