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 TheZwierzLF 🇵🇱 455 105 38ms 13 days ago 722nd brimstonetrader 455 142 10ms 17 Oct 2024 722nd codewrite 🇬🇧 455 142 11ms 5 May 2025 722nd RobGLambert 455 142 16ms 8 Jun 2025 722nd GodlyProgrammer1 455 142 16ms 22 Nov 2025 726th snoozingnewt 🇨🇦 454 149 4ms 2 Nov 2025 727th IISResetMe 453 103 590ms 27 Nov 2025 728th TheZwierzLF 🇵🇱 453 127 565ms 12 Dec 2025 729th GeneralFabian 452 143 10ms 9 Dec 2024 729th CutSandstone 452 143 9ms 30 Jan 2025 729th kistlerf 🇨🇭 452 143 18ms 19 May 2025 732nd dokutan 451 63 3ms 26 Nov 2024 733rd snoozingnewt 🇨🇦 450 176 2ms 2 Nov 2025 734th varhammer 🇷🇺 450 223 11ms 23 Feb 2025 735th hiichbindermax 449 144 15ms 2 Oct 2024 735th mathisfun271 449 144 9ms 14 Oct 2024 735th bob-th 449 144 10ms 22 Oct 2024 738th Flekay 🇩🇪 446 145 10ms 10 Jul 2025 739th dokutan 445 109 10ms 19 Oct 2024 740th grey0ut 444 105 472ms 11 Jan 2025 741st croc54 442 146 12ms 15 Dec 2024 742nd MyXoToD 🇩🇪 441 146 9ms 26 May 2025 743rd Yewzir 🇧🇪 440 171 13ms 26 Dec 2024 744th PyryL 🇫🇮 439 147 10ms 1 Mar 2025 745th mbittner20 437 148 11ms 13 Oct 2024 745th YAJUE114514 437 148 10ms 12 Dec 2025 747th Andrey2001 435 132 629ms 27 Nov 2025 748th JOrE20 🇺🇸 434 136 754ms 7 Dec 2025 749th psaban 434 149 16ms 31 Jul 2025 749th TheZwierzLF 🇵🇱 434 149 11ms 24 Nov 2025 751st KatieLG 🇬🇧 433 183 2ms 2 Oct 2025 752nd dokutan 432 130 292ms 17 Oct 2024 753rd Mabeloid 🇳🇴 432 133 566ms 2 Oct 2024 754th snoozingnewt 🇨🇦 432 267 28ms 18 Dec 2025 755th KatieLG 🇬🇧 431 108 6ms 13 Oct 2024 756th snoozingnewt 🇨🇦 431 111 38ms 2 Nov 2025 757th jameswmccarty 431 150 10ms 5 Oct 2024 757th yousefalizadeh 431 150 10ms 23 Oct 2024 757th feherd 431 150 10ms 31 Oct 2024 757th kadamkaustubh 431 150 9ms 8 Nov 2025 761st adamnielson42 🇺🇸 425 152 12ms 6 Oct 2024 761st voidgloom 425 152 10ms 22 Oct 2024 761st omero-san 425 152 9ms 22 Sep 2025 761st brochmann 🇸🇪 425 152 13ms 12 Oct 2025 765th MeWhenI 🇻🇦 424 143 6ms 2 Oct 2024 766th denisfouchard 422 153 10ms 21 Aug 2025 767th osNiko 🇧🇷 420 154 10ms 21 Aug 2025 768th celiendonze 🇨🇭 417 155 11ms 17 Oct 2025 769th Arkadios200 417 196 98ms 21 Oct 2025 770th Shotokhan 414 156 9ms 21 Sep 2025 771st lhulinsky 411 157 9ms 21 Oct 2024 772nd ThatAlo 409 158 10ms 9 Dec 2024 773rd webmiche 406 159 10ms 3 Nov 2025 774th dieggsy 406 247 18ms 10 Oct 2024 775th Mabeloid 🇳🇴 405 159 9ms 12 Oct 2024 776th CheeseCake628 🇳🇴 404 160 102ms 5 Nov 2024 777th snoozingnewt 🇨🇦 404 223 82ms 2 Nov 2025 778th pres-abhisheksinha 401 161 10ms 8 Oct 2024 779th ibixina 399 162 9ms 13 Oct 2024 779th TheAtrossian 399 162 10ms 5 Jan 2025 781st aksyristos 399 172 2ms 23 Nov 2025 782nd Ralac07 🇦🇺 397 162 11ms 3 Oct 2024 783rd Maximizer02 396 201 11ms 1 Oct 2024 784th Vaekor 392 165 10ms 15 Dec 2024 785th snoozingnewt 🇨🇦 392 276 40ms 6 Dec 2025 786th ehulinsky 🇺🇸 384 158 5ms 2 Apr 2025 787th fischfood 384 176 5ms 22 Oct 2024 788th JesseNoEyes 🇺🇸 382 169 10ms 1 Oct 2024 789th CheeseCake628 🇳🇴 381 151 497ms 18 Oct 2025 790th zyc-2024 🇨🇳 380 170 9ms 5 Oct 2024 791st ComputerKWasTaken 🇺🇸 378 171 10ms 14 Oct 2024 792nd snoozingnewt 🇨🇦 376 267 13ms 2 Nov 2025 793rd KatieLG 🇬🇧 375 218 108ms 21 Nov 2025 794th navier-1 373 173 11ms 22 Sep 2025 795th c0d3-4-F00d 🇩🇪 373 184 2ms 9 Jan 2025 796th RobGLambert 372 232 1,019ms 8 Jun 2025 797th snoozingnewt 🇨🇦 372 313 40ms 2 Nov 2025 798th RedzGoose 🇦🇺 369 187 114ms 2 Oct 2024 799th P1nk-P0nk 368 215 3ms 18 Oct 2024 800th clayboll99 367 176 10ms 10 Jul 2025 First Prev 721–800 of 863 Next Last