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 Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript 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 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 ArkScript 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 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 Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 481st Yax42 🇫🇷 674 129 68ms 8 Jan 2026 481st emgordon154 674 129 61ms 8 Feb 2026 483rd MeWhenI 🇻🇦 673 96 17ms 30 Jul 2025 484th jerrandolph 673 177 295ms 25 Sep 2025 484th CaedenHarper 🇨🇦 673 177 312ms 17 Nov 2025 486th HumanoidCPU 671 96 11ms 7 Mar 2025 487th error256 671 101 5ms 24 Oct 2024 488th emgordon154 670 115 111ms 9 Dec 2025 489th Shanethegamer 🇺🇸 668 65 1ms 1 Oct 2024 490th madex 🇩🇪 668 103 1ms 2 Oct 2024 491st CaedenHarper 🇨🇦 667 140 571ms 3 Oct 2025 492nd dbut2 🇦🇺 666 179 284ms 31 Oct 2024 493rd two-bad 🇬🇧 664 97 11ms 2 Oct 2024 493rd LordSir101 664 97 9ms 10 Aug 2025 495th yeminghan2021 663 131 70ms 3 Feb 2026 496th Shanethegamer 🇺🇸 663 172 39ms 2 Oct 2024 497th BlankSpruce 662 104 2ms 1 Oct 2024 498th snoozingnewt 🇨🇦 662 180 295ms 2 Nov 2025 499th 4hg 🇺🇸 661 59 34ms 5 Oct 2024 500th MeWhenI 🇻🇦 660 88 136ms 2 Oct 2024 500th Shanethegamer 🇺🇸 660 88 146ms 5 Oct 2024 502nd GolfingSuccess 🇬🇷 660 98 17ms 5 Oct 2024 502nd JunkIce 660 98 10ms 3 Dec 2024 504th BambooleanLogic 🇸🇪 658 98 10ms 21 Oct 2024 505th error256 658 142 164ms 31 May 2025 506th AlephSquirrel 657 146 4ms 14 May 2025 507th Herbert00709 🇵🇱 656 105 2ms 14 Jun 2025 508th MeWhenI 🇻🇦 655 174 41ms 13 Feb 2025 509th jwhear 🇺🇸 655 197 1,696ms 1 Oct 2024 510th MeWhenI 🇻🇦 654 88 440ms 2 Oct 2024 511th voytxt 🇨🇿 653 89 153ms 17 Apr 2025 511th dokutan 653 89 138ms 28 Jun 2025 513th SirBogman 🇺🇸 653 99 16ms 8 Oct 2024 513th solisolu 653 99 17ms 7 days ago 515th dokutan 651 99 10ms 28 Jun 2025 516th w911 651 183 281ms 7 Oct 2024 517th albanian-laundromat 651 293 14ms 8 Dec 2025 518th emgordon154 650 111 4ms 12 Jan 2025 519th rniii 649 106 1ms 2 Oct 2024 519th gastropner 649 106 2ms 11 Feb 2025 519th solisolu 649 106 2ms 14 Feb 2026 522nd rucin93 🇵🇱 649 144 156ms 28 Oct 2024 523rd DialFrost 🇸🇬 648 67 2ms 22 Dec 2024 524th FlorianCassayre 🇫🇷 646 100 17ms 1 Oct 2024 524th bzijlema 🇳🇱 646 100 18ms 10 Oct 2024 524th bricknellj 646 100 17ms 4 Mar 2025 527th koipondx86 645 123 2ms 8 Nov 2024 528th frankgraziano 645 128 7ms 26 days ago 529th CaedenHarper 🇨🇦 644 100 9ms 22 Aug 2025 529th iczelia 🇩🇪 644 100 12ms 11 Oct 2025 529th Yax42 🇫🇷 644 100 9ms 27 Nov 2025 532nd Apataras 644 145 390ms 25 Jun 2025 533rd tomh1012 643 111 500ms 8 Sep 2025 534th Shanethegamer 🇺🇸 643 124 7ms 4 Oct 2024 535th btjones0 640 101 17ms 2 Dec 2024 536th elgan65536 🇺🇸 640 146 161ms 2 Oct 2024 536th dokutan 640 146 379ms 23 Nov 2025 536th luuumine 🇫🇷 640 146 159ms 26 Nov 2025 539th stefangimmillaro 639 73 314ms 1 Oct 2024 540th MeWhenI 🇻🇦 638 73 7ms 3 Oct 2024 541st MeWhenI 🇻🇦 634 91 994ms 29 Aug 2025 542nd annaproxy 634 102 17ms 1 Oct 2024 542nd xyangst 634 102 11ms 1 Oct 2024 544th msbranicky 634 188 301ms 7 Jan 2025 545th Florian-Mt 632 102 11ms 5 Dec 2025 546th Shanethegamer 🇺🇸 631 74 324ms 16 Oct 2024 547th albanian-laundromat 631 264 1,408ms 3 Nov 2025 548th robin-scragg 628 103 11ms 21 Aug 2025 549th DialFrost 🇸🇬 627 304 153ms 13 Aug 2025 550th Jonatan6 🇩🇰 626 110 2ms 24 Oct 2024 551st AlephSquirrel 625 40 44ms 1 Oct 2024 552nd dokutan 624 127 2ms 10 Dec 2024 553rd BalaM314 620 104 12ms 4 Feb 2025 553rd acollett89 620 104 10ms 15 Jul 2025 555th Yax42 🇫🇷 620 111 2ms 9 Jan 2026 556th codereport 🇨🇦 619 63 33ms 2 Oct 2024 557th SirBogman 🇺🇸 619 93 503ms 23 Jul 2025 558th MarcMush 🇫🇷 618 91 813ms 8 Oct 2024 559th Ripick 617 135 366ms 23 Mar 2025 560th fourth-bit 616 105 17ms 1 Oct 2024 First Prev 481–560 of 908 Next Last