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 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 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 ><> ALGOL 68 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 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 ><> ALGOL 68 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 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 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 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 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 720th mwarvik 🇳🇴 476 150 439ms 1 Jan 2026 722nd sciencedjinn 475 136 10ms 8 Nov 2024 722nd jastrzumb 475 136 18ms 4 Jan 2025 722nd Florian-Mt 475 136 17ms 5 Dec 2025 725th alphafalfa 472 92 2ms 8 Nov 2024 726th kurkale6ka 472 137 22ms 16 Oct 2024 726th 4ndyJ 🇬🇧 472 137 11ms 14 Nov 2024 726th Mikey-Beep 🇬🇧 472 137 17ms 6 Aug 2025 726th wobblybits 472 137 19ms 17 Aug 2025 726th Andrey2001 472 137 9ms 1 Feb 2026 726th tomh1012 472 137 17ms 2 days ago 732nd luca1339 472 198 425ms 4 Nov 2024 733rd ejini6969 469 102 37ms 14 Jun 2025 734th h-hh-hhh 🇺🇦 468 147 1ms 2 Nov 2024 735th snoozingnewt 🇨🇦 466 200 260ms 2 Nov 2025 736th scpchicken 🇵🇼 465 139 17ms 6 Oct 2024 737th snoozingnewt 🇨🇦 464 121 229ms 27 Nov 2025 738th iczelia 🇩🇪 462 94 2ms 23 Sep 2025 739th NanduBC 462 140 9ms 1 Oct 2024 739th jmerle 🇳🇱 462 140 10ms 10 Jan 2025 739th RobertHoeh 462 140 11ms 3 Mar 2025 739th smilesformiles3 462 140 17ms 12 Jun 2025 739th artem-aramma 462 140 18ms 18 Jun 2025 744th Jacob385 462 202 418ms 2 Oct 2024 745th madex 🇩🇪 460 104 37ms 2 Oct 2024 745th denkyuu1 460 104 35ms 12 days ago 747th FranklinJiaChen 458 141 10ms 2 Oct 2024 748th TheZwierzLF 🇵🇱 456 105 38ms 8 Jan 2026 749th jbjd 456 151 2ms 4 Feb 2026 750th brimstonetrader 455 142 11ms 17 Oct 2024 750th codewrite 🇬🇧 455 142 10ms 5 May 2025 750th RobGLambert 455 142 17ms 8 Jun 2025 750th GodlyProgrammer1 455 142 18ms 22 Nov 2025 750th jbjd 455 142 11ms 4 Feb 2026 755th snoozingnewt 🇨🇦 455 149 4ms 2 Nov 2025 756th IISResetMe 453 103 486ms 27 Nov 2025 757th TheZwierzLF 🇵🇱 453 127 507ms 12 Dec 2025 758th snoozingnewt 🇨🇦 452 96 2ms 2 Nov 2025 759th GeneralFabian 452 143 10ms 9 Dec 2024 759th CutSandstone 452 143 10ms 30 Jan 2025 759th kistlerf 🇨🇭 452 143 17ms 19 May 2025 762nd dokutan 451 63 3ms 26 Nov 2024 763rd snoozingnewt 🇨🇦 451 176 2ms 2 Nov 2025 764th hiichbindermax 449 144 17ms 2 Oct 2024 764th mathisfun271 449 144 10ms 14 Oct 2024 764th bob-th 449 144 10ms 22 Oct 2024 764th denkyuu1 449 144 16ms 12 days ago 768th Andrey2001 446 129 525ms 1 Feb 2026 769th dokutan 445 109 10ms 19 Oct 2024 770th grey0ut 444 105 472ms 11 Jan 2025 771st croc54 443 146 10ms 15 Dec 2024 772nd Yewzir 🇧🇪 442 171 13ms 26 Dec 2024 773rd MyXoToD 🇩🇪 441 146 10ms 26 May 2025 774th PyryL 🇫🇮 440 147 10ms 1 Mar 2025 775th mbittner20 437 148 10ms 13 Oct 2024 775th YAJUE114514 437 148 10ms 12 Dec 2025 777th varhammer 435 223 11ms 23 Feb 2025 778th psaban 434 149 15ms 31 Jul 2025 778th TheZwierzLF 🇵🇱 434 149 11ms 24 Nov 2025 778th RodAlc24 🇪🇸 434 149 17ms 13 days ago 781st Mabeloid 🇳🇴 433 133 538ms 2 Oct 2024 782nd KatieLG 🇬🇧 433 183 2ms 2 Oct 2025 783rd dokutan 432 130 289ms 17 Oct 2024 784th KatieLG 🇬🇧 431 108 6ms 13 Oct 2024 785th snoozingnewt 🇨🇦 431 111 38ms 2 Nov 2025 786th jameswmccarty 431 150 10ms 5 Oct 2024 786th yousefalizadeh 431 150 10ms 23 Oct 2024 786th feherd 431 150 11ms 31 Oct 2024 786th kadamkaustubh 431 150 10ms 8 Nov 2025 790th adamnielson42 🇺🇸 425 152 10ms 6 Oct 2024 790th voidgloom 425 152 10ms 22 Oct 2024 790th omero-san 425 152 10ms 22 Sep 2025 790th brochmann 🇸🇪 425 152 10ms 12 Oct 2025 794th JOrE20 424 136 1,020ms 7 Dec 2025 795th MeWhenI 🇻🇦 424 143 6ms 2 Oct 2024 796th denisfouchard 422 153 10ms 21 Aug 2025 797th osNiko 🇧🇷 420 154 9ms 21 Aug 2025 798th celiendonze 🇨🇭 417 155 10ms 17 Oct 2025 799th Arkadios200 417 196 106ms 21 Oct 2025 800th Shotokhan 414 156 10ms 21 Sep 2025 First Prev 721–800 of 901 Next Last