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 721st snoozingnewt 🇨🇦 486 117 1,338ms 2 Nov 2025 722nd Mabeloid 🇳🇴 486 133 11ms 2 Oct 2024 723rd mitzal 483 180 59ms 9 Feb 2025 724th snoozingnewt 🇨🇦 482 173 377ms 2 Nov 2025 725th MiffOttah 476 150 446ms 6 Oct 2024 725th mwarvik 🇳🇴 476 150 439ms 1 Jan 2026 727th sciencedjinn 475 136 10ms 8 Nov 2024 727th jastrzumb 475 136 18ms 4 Jan 2025 727th Florian-Mt 475 136 17ms 5 Dec 2025 730th alphafalfa 472 92 2ms 8 Nov 2024 731st kurkale6ka 472 137 22ms 16 Oct 2024 731st 4ndyJ 🇬🇧 472 137 11ms 14 Nov 2024 731st Mikey-Beep 🇬🇧 472 137 17ms 6 Aug 2025 731st wobblybits 472 137 19ms 17 Aug 2025 731st Andrey2001 472 137 9ms 1 Feb 2026 731st tomh1012 472 137 17ms 6 days ago 731st Aquateraneal 🇺🇸 472 137 17ms 2 days ago 738th luca1339 472 198 425ms 4 Nov 2024 739th ejini6969 469 102 37ms 14 Jun 2025 740th h-hh-hhh 🇺🇦 468 147 1ms 2 Nov 2024 741st snoozingnewt 🇨🇦 467 200 240ms 2 Nov 2025 742nd snoozingnewt 🇨🇦 465 121 229ms 27 Nov 2025 743rd scpchicken 🇵🇼 465 139 17ms 6 Oct 2024 744th iczelia 🇩🇪 462 94 2ms 23 Sep 2025 745th NanduBC 462 140 9ms 1 Oct 2024 745th jmerle 🇳🇱 462 140 10ms 10 Jan 2025 745th RobertHoeh 462 140 11ms 3 Mar 2025 745th smilesformiles3 462 140 17ms 12 Jun 2025 745th artem-aramma 462 140 18ms 18 Jun 2025 750th Jacob385 462 202 418ms 2 Oct 2024 751st madex 🇩🇪 460 104 37ms 2 Oct 2024 752nd FranklinJiaChen 458 141 10ms 2 Oct 2024 753rd TheZwierzLF 🇵🇱 456 105 38ms 8 Jan 2026 754th jbjd 456 151 2ms 4 Feb 2026 755th brimstonetrader 455 142 11ms 17 Oct 2024 755th codewrite 🇬🇧 455 142 10ms 5 May 2025 755th RobGLambert 455 142 17ms 8 Jun 2025 755th GodlyProgrammer1 455 142 18ms 22 Nov 2025 755th jbjd 455 142 11ms 4 Feb 2026 760th snoozingnewt 🇨🇦 455 149 4ms 2 Nov 2025 761st IISResetMe 453 103 486ms 27 Nov 2025 762nd TheZwierzLF 🇵🇱 453 127 507ms 12 Dec 2025 763rd snoozingnewt 🇨🇦 452 96 2ms 2 Nov 2025 764th GeneralFabian 452 143 10ms 9 Dec 2024 764th CutSandstone 452 143 10ms 30 Jan 2025 764th kistlerf 🇨🇭 452 143 17ms 19 May 2025 767th dokutan 451 63 3ms 26 Nov 2024 768th snoozingnewt 🇨🇦 451 176 2ms 2 Nov 2025 769th hiichbindermax 449 144 17ms 2 Oct 2024 769th mathisfun271 449 144 10ms 14 Oct 2024 769th bob-th 449 144 10ms 22 Oct 2024 772nd Andrey2001 446 129 525ms 1 Feb 2026 773rd dokutan 445 109 10ms 19 Oct 2024 774th grey0ut 444 105 472ms 11 Jan 2025 775th croc54 443 146 10ms 15 Dec 2024 776th Yewzir 🇧🇪 442 171 13ms 26 Dec 2024 777th MyXoToD 🇩🇪 441 146 13ms 26 May 2025 778th PyryL 🇫🇮 440 147 10ms 1 Mar 2025 779th mbittner20 437 148 10ms 13 Oct 2024 779th YAJUE114514 437 148 10ms 12 Dec 2025 781st varhammer 435 223 11ms 23 Feb 2025 782nd psaban 434 149 15ms 31 Jul 2025 782nd TheZwierzLF 🇵🇱 434 149 11ms 24 Nov 2025 782nd RodAlc24 🇪🇸 434 149 17ms 16 days ago 785th dokutan 433 130 289ms 17 Oct 2024 786th Mabeloid 🇳🇴 433 133 538ms 2 Oct 2024 787th KatieLG 🇬🇧 433 183 2ms 2 Oct 2025 788th KatieLG 🇬🇧 431 108 6ms 13 Oct 2024 789th snoozingnewt 🇨🇦 431 111 38ms 2 Nov 2025 790th jameswmccarty 431 150 10ms 5 Oct 2024 790th yousefalizadeh 431 150 10ms 23 Oct 2024 790th feherd 431 150 11ms 31 Oct 2024 790th kadamkaustubh 431 150 10ms 8 Nov 2025 794th adamnielson42 🇺🇸 425 152 10ms 6 Oct 2024 794th voidgloom 425 152 10ms 22 Oct 2024 794th omero-san 425 152 10ms 22 Sep 2025 794th brochmann 🇸🇪 425 152 10ms 12 Oct 2025 798th JOrE20 424 136 1,020ms 7 Dec 2025 799th MeWhenI 🇻🇦 424 143 6ms 2 Oct 2024 800th denisfouchard 422 153 10ms 21 Aug 2025 First Prev 721–800 of 907 Next Last