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 718th smilesformiles3 461 140 17ms 12 Jun 2025 718th artem-aramma 461 140 18ms 18 Jun 2025 723rd madex 🇩🇪 460 104 38ms 2 Oct 2024 724th FranklinJiaChen 458 141 10ms 2 Oct 2024 725th TheZwierzLF 🇵🇱 455 105 38ms 8 Jan 2026 726th brimstonetrader 455 142 11ms 17 Oct 2024 726th codewrite 🇬🇧 455 142 10ms 5 May 2025 726th RobGLambert 455 142 18ms 8 Jun 2025 726th GodlyProgrammer1 455 142 19ms 22 Nov 2025 726th jbjd 455 142 13ms 3 days ago 731st jbjd 455 151 3ms 3 days ago 732nd snoozingnewt 🇨🇦 454 149 4ms 2 Nov 2025 733rd IISResetMe 453 103 590ms 27 Nov 2025 734th TheZwierzLF 🇵🇱 453 127 507ms 12 Dec 2025 735th snoozingnewt 🇨🇦 452 96 2ms 2 Nov 2025 736th GeneralFabian 452 143 11ms 9 Dec 2024 736th CutSandstone 452 143 10ms 30 Jan 2025 736th kistlerf 🇨🇭 452 143 19ms 19 May 2025 739th dokutan 451 63 3ms 26 Nov 2024 740th snoozingnewt 🇨🇦 451 176 2ms 2 Nov 2025 741st hiichbindermax 449 144 17ms 2 Oct 2024 741st mathisfun271 449 144 10ms 14 Oct 2024 741st bob-th 449 144 10ms 22 Oct 2024 744th Andrey2001 446 129 525ms 5 days ago 745th Flekay 🇩🇪 446 145 10ms 10 Jul 2025 746th dokutan 445 109 10ms 19 Oct 2024 747th grey0ut 444 105 472ms 11 Jan 2025 748th croc54 443 146 10ms 15 Dec 2024 749th varhammer 🇷🇺 443 223 11ms 23 Feb 2025 750th MyXoToD 🇩🇪 441 146 9ms 26 May 2025 751st PyryL 🇫🇮 440 147 10ms 1 Mar 2025 752nd Yewzir 🇧🇪 440 171 13ms 26 Dec 2024 753rd mbittner20 437 148 11ms 13 Oct 2024 753rd YAJUE114514 437 148 11ms 12 Dec 2025 755th JOrE20 434 136 1,021ms 7 Dec 2025 756th psaban 434 149 15ms 31 Jul 2025 756th TheZwierzLF 🇵🇱 434 149 11ms 24 Nov 2025 758th KatieLG 🇬🇧 433 183 2ms 2 Oct 2025 759th dokutan 432 130 292ms 17 Oct 2024 760th Mabeloid 🇳🇴 432 133 538ms 2 Oct 2024 761st KatieLG 🇬🇧 431 108 6ms 13 Oct 2024 762nd snoozingnewt 🇨🇦 431 111 38ms 2 Nov 2025 763rd jameswmccarty 431 150 10ms 5 Oct 2024 763rd yousefalizadeh 431 150 10ms 23 Oct 2024 763rd feherd 431 150 14ms 31 Oct 2024 763rd kadamkaustubh 431 150 10ms 8 Nov 2025 767th snoozingnewt 🇨🇦 426 267 28ms 18 Dec 2025 768th adamnielson42 🇺🇸 425 152 10ms 6 Oct 2024 768th voidgloom 425 152 11ms 22 Oct 2024 768th omero-san 425 152 12ms 22 Sep 2025 768th brochmann 🇸🇪 425 152 10ms 12 Oct 2025 772nd MeWhenI 🇻🇦 424 143 7ms 2 Oct 2024 773rd denisfouchard 422 153 10ms 21 Aug 2025 774th osNiko 🇧🇷 420 154 9ms 21 Aug 2025 775th celiendonze 🇨🇭 417 155 10ms 17 Oct 2025 776th Arkadios200 417 196 98ms 21 Oct 2025 777th Shotokhan 414 156 10ms 21 Sep 2025 778th lhulinsky 412 157 10ms 21 Oct 2024 779th ThatAlo 409 158 10ms 9 Dec 2024 780th webmiche 406 159 12ms 3 Nov 2025 781st Mabeloid 🇳🇴 405 159 9ms 12 Oct 2024 782nd CheeseCake628 🇳🇴 404 160 104ms 5 Nov 2024 783rd snoozingnewt 🇨🇦 404 223 82ms 2 Nov 2025 784th pres-abhisheksinha 401 161 10ms 8 Oct 2024 785th aksyristos 400 172 2ms 23 Nov 2025 786th dieggsy 400 247 18ms 10 Oct 2024 787th ibixina 399 162 11ms 13 Oct 2024 787th TheAtrossian 399 162 11ms 5 Jan 2025 789th Ralac07 🇦🇺 397 162 11ms 3 Oct 2024 790th Maximizer02 396 201 11ms 1 Oct 2024 791st Vaekor 392 165 11ms 15 Dec 2024 792nd snoozingnewt 🇨🇦 392 276 40ms 6 Dec 2025 793rd JOrE20 385 191 109ms 11 days ago 794th ehulinsky 🇺🇸 384 158 5ms 2 Apr 2025 795th fischfood 384 176 5ms 22 Oct 2024 796th JesseNoEyes 🇺🇸 382 169 12ms 1 Oct 2024 797th CheeseCake628 🇳🇴 381 151 521ms 18 Oct 2025 798th zyc-2024 🇨🇳 380 170 10ms 5 Oct 2024 799th ComputerKWasTaken 🇺🇸 378 171 10ms 14 Oct 2024 800th KatieLG 🇬🇧 375 218 108ms 21 Nov 2025 First Prev 721–800 of 872 Next Last