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 481st BlankSpruce 662 104 2ms 1 Oct 2024 482nd snoozingnewt 🇨🇦 662 180 291ms 2 Nov 2025 483rd 4hg 🇺🇸 661 59 34ms 5 Oct 2024 484th MeWhenI 🇻🇦 659 88 131ms 2 Oct 2024 484th Shanethegamer 🇺🇸 659 88 140ms 5 Oct 2024 486th GolfingSuccess 🇬🇷 659 98 19ms 5 Oct 2024 486th firegene 🇮🇪 659 98 16ms 21 Oct 2024 486th JunkIce 659 98 11ms 3 Dec 2024 489th BambooleanLogic 🇸🇪 657 98 10ms 21 Oct 2024 490th error256 657 142 166ms 31 May 2025 491st AlephSquirrel 657 146 4ms 14 May 2025 492nd Herbert00709 🇵🇱 656 105 2ms 14 Jun 2025 493rd jwhear 🇺🇸 655 197 1,696ms 1 Oct 2024 494th MeWhenI 🇻🇦 653 88 440ms 2 Oct 2024 495th SirBogman 🇺🇸 653 99 16ms 8 Oct 2024 496th voytxt 🇨🇿 651 89 136ms 17 Apr 2025 496th dokutan 651 89 120ms 28 Jun 2025 498th w911 651 183 308ms 7 Oct 2024 499th albanian-laundromat 651 293 14ms 8 Dec 2025 500th dokutan 650 99 9ms 28 Jun 2025 501st rniii 649 106 1ms 2 Oct 2024 501st gastropner 649 106 2ms 11 Feb 2025 503rd DialFrost 🇸🇬 648 67 2ms 22 Dec 2024 504th MeWhenI 🇻🇦 648 91 994ms 29 Aug 2025 505th rucin93 🇵🇱 648 144 148ms 28 Oct 2024 506th FlorianCassayre 🇫🇷 646 100 17ms 1 Oct 2024 506th bzijlema 🇳🇱 646 100 18ms 10 Oct 2024 506th bricknellj 646 100 17ms 4 Mar 2025 509th koipondx86 645 123 2ms 8 Nov 2024 510th CaedenHarper 🇨🇦 644 100 10ms 22 Aug 2025 510th iczelia 🇩🇪 644 100 10ms 11 Oct 2025 510th Yax42 🇫🇷 644 100 9ms 27 Nov 2025 513th Apataras 644 145 414ms 25 Jun 2025 514th tomh1012 643 111 539ms 8 Sep 2025 515th Shanethegamer 🇺🇸 643 124 6ms 4 Oct 2024 516th btjones0 640 101 18ms 2 Dec 2024 517th dokutan 640 146 379ms 23 Nov 2025 518th stefangimmillaro 639 73 331ms 1 Oct 2024 519th elgan65536 🇺🇸 639 146 153ms 2 Oct 2024 519th luuumine 🇫🇷 639 146 147ms 26 Nov 2025 521st MeWhenI 🇻🇦 638 73 8ms 3 Oct 2024 522nd annaproxy 634 102 17ms 1 Oct 2024 522nd xyangst 634 102 11ms 1 Oct 2024 522nd solisolu 634 102 10ms 31 Dec 2025 525th msbranicky 634 188 316ms 7 Jan 2025 526th dokutan 632 91 377ms 19 Oct 2024 527th Shanethegamer 🇺🇸 631 74 287ms 16 Oct 2024 528th Florian-Mt 631 102 10ms 5 Dec 2025 529th albanian-laundromat 631 264 1,424ms 3 Nov 2025 530th robin-scragg 627 103 11ms 21 Aug 2025 531st DialFrost 🇸🇬 627 304 153ms 13 Aug 2025 532nd Jonatan6 🇩🇰 626 110 2ms 24 Oct 2024 532nd solisolu 626 110 2ms 25 Nov 2025 534th AlephSquirrel 625 40 43ms 1 Oct 2024 535th dokutan 624 127 2ms 10 Dec 2024 536th Yax42 🇫🇷 620 111 2ms 9 Jan 2026 537th codereport 🇨🇦 619 63 33ms 2 Oct 2024 538th BalaM314 619 104 11ms 4 Feb 2025 538th acollett89 619 104 9ms 15 Jul 2025 540th SirBogman 🇺🇸 618 93 510ms 23 Jul 2025 541st MarcMush 🇫🇷 617 91 813ms 8 Oct 2024 542nd Ripick 617 135 346ms 23 Mar 2025 543rd bac0id 616 141 405ms 10 Jan 2025 544th fourth-bit 615 105 17ms 1 Oct 2024 544th jared-hughes 615 105 18ms 3 Oct 2024 544th mattyhempstead 615 105 29ms 7 Oct 2024 547th olleicua 🇺🇸 613 78 35ms 18 Oct 2024 548th evnu 612 147 86ms 12 Oct 2025 549th davecame 610 106 18ms 1 Oct 2024 549th starfihs 610 106 10ms 2 Oct 2024 549th rschwa6308 🇺🇸 610 106 16ms 28 Oct 2024 549th snydej 610 106 17ms 21 Nov 2024 549th andrewjc2000 610 106 17ms 17 Jul 2025 549th travisdoesmath 610 106 17ms 7 Sep 2025 555th Seanharrs 610 117 471ms 15 Nov 2024 556th not-a-pokemon 609 113 2ms 23 Jul 2025 557th kaascevich 609 134 121ms 9 Jul 2025 558th daveberlin 607 106 10ms 27 Jun 2025 559th Shanethegamer 🇺🇸 606 154 151ms 3 Oct 2024 560th alemelis 604 93 477ms 1 Oct 2024 First Prev 481–560 of 884 Next Last