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 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 Multitap Input 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 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 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 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 Multitap Input 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 brimstonetrader 455 142 10ms 17 Oct 2024 721st codewrite 🇬🇧 455 142 11ms 5 May 2025 721st RobGLambert 455 142 16ms 8 Jun 2025 721st GodlyProgrammer1 455 142 16ms 22 Nov 2025 725th snoozingnewt 🇨🇦 454 149 4ms 2 Nov 2025 726th IISResetMe 453 103 590ms 27 Nov 2025 727th TheZwierzLF 🇵🇱 453 127 565ms 12 Dec 2025 728th GeneralFabian 452 143 10ms 9 Dec 2024 728th CutSandstone 452 143 9ms 30 Jan 2025 728th kistlerf 🇨🇭 452 143 18ms 19 May 2025 731st dokutan 451 63 3ms 26 Nov 2024 732nd snoozingnewt 🇨🇦 450 176 2ms 2 Nov 2025 733rd varhammer 🇷🇺 450 223 11ms 23 Feb 2025 734th hiichbindermax 449 144 15ms 2 Oct 2024 734th mathisfun271 449 144 9ms 14 Oct 2024 734th bob-th 449 144 10ms 22 Oct 2024 737th Flekay 🇩🇪 446 145 10ms 10 Jul 2025 738th dokutan 445 109 10ms 19 Oct 2024 739th grey0ut 444 105 472ms 11 Jan 2025 740th croc54 442 146 12ms 15 Dec 2024 741st MyXoToD 🇩🇪 441 146 9ms 26 May 2025 742nd Yewzir 🇧🇪 440 171 13ms 26 Dec 2024 743rd PyryL 🇫🇮 439 147 10ms 1 Mar 2025 744th mbittner20 437 148 11ms 13 Oct 2024 744th YAJUE114514 437 148 10ms 12 Dec 2025 746th Andrey2001 435 132 629ms 27 Nov 2025 747th JOrE20 🇺🇸 434 136 754ms 7 Dec 2025 748th psaban 434 149 16ms 31 Jul 2025 748th TheZwierzLF 🇵🇱 434 149 11ms 24 Nov 2025 750th KatieLG 🇬🇧 433 183 2ms 2 Oct 2025 751st dokutan 432 130 292ms 17 Oct 2024 752nd Mabeloid 🇳🇴 432 133 566ms 2 Oct 2024 753rd snoozingnewt 🇨🇦 432 267 28ms 18 Dec 2025 754th KatieLG 🇬🇧 431 108 6ms 13 Oct 2024 755th snoozingnewt 🇨🇦 431 111 38ms 2 Nov 2025 756th jameswmccarty 431 150 10ms 5 Oct 2024 756th yousefalizadeh 431 150 10ms 23 Oct 2024 756th feherd 431 150 10ms 31 Oct 2024 756th kadamkaustubh 431 150 9ms 8 Nov 2025 760th adamnielson42 🇺🇸 425 152 12ms 6 Oct 2024 760th voidgloom 425 152 10ms 22 Oct 2024 760th omero-san 425 152 9ms 22 Sep 2025 760th brochmann 🇸🇪 425 152 13ms 12 Oct 2025 764th MeWhenI 🇻🇦 424 143 6ms 2 Oct 2024 765th denisfouchard 422 153 10ms 21 Aug 2025 766th osNiko 🇧🇷 420 154 10ms 21 Aug 2025 767th celiendonze 🇨🇭 417 155 11ms 17 Oct 2025 768th Arkadios200 417 196 98ms 21 Oct 2025 769th Shotokhan 414 156 9ms 21 Sep 2025 770th lhulinsky 411 157 9ms 21 Oct 2024 771st ThatAlo 409 158 10ms 9 Dec 2024 772nd webmiche 406 159 10ms 3 Nov 2025 773rd dieggsy 406 247 18ms 10 Oct 2024 774th Mabeloid 🇳🇴 405 159 9ms 12 Oct 2024 775th CheeseCake628 🇳🇴 404 160 102ms 5 Nov 2024 776th snoozingnewt 🇨🇦 404 223 82ms 2 Nov 2025 777th pres-abhisheksinha 401 161 10ms 8 Oct 2024 778th ibixina 399 162 9ms 13 Oct 2024 778th TheAtrossian 399 162 10ms 5 Jan 2025 780th aksyristos 399 172 2ms 23 Nov 2025 781st Ralac07 🇦🇺 397 162 11ms 3 Oct 2024 782nd Maximizer02 396 201 11ms 1 Oct 2024 783rd Vaekor 392 165 10ms 15 Dec 2024 784th snoozingnewt 🇨🇦 392 276 40ms 6 Dec 2025 785th ehulinsky 🇺🇸 384 158 5ms 2 Apr 2025 786th fischfood 384 176 5ms 22 Oct 2024 787th JesseNoEyes 🇺🇸 382 169 10ms 1 Oct 2024 788th CheeseCake628 🇳🇴 381 151 497ms 18 Oct 2025 789th zyc-2024 🇨🇳 380 170 9ms 5 Oct 2024 790th ComputerKWasTaken 🇺🇸 378 171 10ms 14 Oct 2024 791st snoozingnewt 🇨🇦 376 267 13ms 2 Nov 2025 792nd KatieLG 🇬🇧 375 218 108ms 21 Nov 2025 793rd navier-1 373 173 11ms 22 Sep 2025 794th c0d3-4-F00d 🇩🇪 373 184 2ms 9 Jan 2025 795th RobGLambert 372 232 1,019ms 8 Jun 2025 796th snoozingnewt 🇨🇦 372 313 40ms 2 Nov 2025 797th RedzGoose 🇦🇺 369 187 114ms 2 Oct 2024 798th P1nk-P0nk 368 215 3ms 18 Oct 2024 799th clayboll99 367 176 10ms 10 Jul 2025 800th Upload-and-View 🇺🇦 365 177 17ms 9 Aug 2025 First Prev 721–800 of 861 Next Last