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 Gray Code Decoder Gray Code Encoder 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 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 Gray Code Decoder Gray Code Encoder 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 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 ovs-code 🇩🇪 686 84 458ms 3 Oct 2024 482nd XenThe 🇬🇧 686 94 10ms 7 Jul 2025 483rd KatieLG 🇬🇧 684 70 37ms 2 Oct 2025 484th aDwarfNamedUrist 684 162 138ms 1 Sep 2025 485th the-zammers 680 163 149ms 1 Dec 2024 486th tailorspy 679 128 477ms 4 Oct 2024 487th GrayJoKing 🇦🇺 678 79 1,204ms 1 Oct 2024 488th snoozingnewt 🇨🇦 676 95 78ms 23 Oct 2025 489th jkelly467 674 99 2,688ms 22 Jan 2026 490th Yax42 🇫🇷 674 129 76ms 8 Jan 2026 490th emgordon154 674 129 65ms 8 Feb 2026 492nd GolfingSuccess 🇬🇷 674 174 34ms 10 days ago 493rd MeWhenI 🇻🇦 673 96 17ms 30 Jul 2025 494th jerrandolph 673 177 295ms 25 Sep 2025 494th CaedenHarper 🇨🇦 673 177 312ms 17 Nov 2025 496th HumanoidCPU 672 96 11ms 7 Mar 2025 497th error256 671 101 5ms 24 Oct 2024 498th emgordon154 670 115 111ms 9 Dec 2025 499th madex 🇩🇪 669 103 1ms 2 Oct 2024 499th solisolu 669 103 2ms 2 days ago 501st Shanethegamer 🇺🇸 668 65 1ms 1 Oct 2024 502nd CaedenHarper 🇨🇦 668 140 571ms 3 Oct 2025 503rd dbut2 🇦🇺 666 179 284ms 31 Oct 2024 504th two-bad 🇬🇧 665 97 10ms 2 Oct 2024 504th LordSir101 665 97 10ms 10 Aug 2025 506th BlankSpruce 663 104 2ms 1 Oct 2024 507th yeminghan2021 663 131 65ms 3 Feb 2026 508th Shanethegamer 🇺🇸 663 172 39ms 2 Oct 2024 509th snoozingnewt 🇨🇦 662 180 295ms 2 Nov 2025 510th 4hg 🇺🇸 661 59 34ms 5 Oct 2024 511th error256 661 142 156ms 31 May 2025 512th MeWhenI 🇻🇦 660 88 136ms 2 Oct 2024 512th Shanethegamer 🇺🇸 660 88 146ms 5 Oct 2024 514th GolfingSuccess 🇬🇷 660 98 17ms 5 Oct 2024 514th JunkIce 660 98 10ms 3 Dec 2024 516th BambooleanLogic 🇸🇪 658 98 10ms 21 Oct 2024 517th Herbert00709 🇵🇱 657 105 2ms 14 Jun 2025 518th AlephSquirrel 657 146 4ms 14 May 2025 519th MeWhenI 🇻🇦 655 174 41ms 13 Feb 2025 520th jwhear 🇺🇸 655 197 1,696ms 1 Oct 2024 521st albanian-laundromat 655 291 12ms 33 hours ago 522nd MeWhenI 🇻🇦 654 88 440ms 2 Oct 2024 523rd voytxt 🇨🇿 653 89 153ms 17 Apr 2025 523rd dokutan 653 89 138ms 28 Jun 2025 525th SirBogman 🇺🇸 653 99 16ms 8 Oct 2024 525th solisolu 653 99 17ms 23 days ago 527th rucin93 🇵🇱 652 144 164ms 28 Oct 2024 528th dokutan 651 99 9ms 28 Jun 2025 529th w911 651 183 281ms 7 Oct 2024 530th rniii 650 106 1ms 2 Oct 2024 530th gastropner 650 106 2ms 11 Feb 2025 532nd DialFrost 🇸🇬 648 67 2ms 22 Dec 2024 533rd scpchicken 🇵🇼 647 61 4ms 9 hours ago 534th FlorianCassayre 🇫🇷 647 100 17ms 1 Oct 2024 534th bzijlema 🇳🇱 647 100 18ms 10 Oct 2024 534th bricknellj 647 100 17ms 4 Mar 2025 537th CaedenHarper 🇨🇦 645 100 10ms 22 Aug 2025 537th iczelia 🇩🇪 645 100 9ms 11 Oct 2025 537th Yax42 🇫🇷 645 100 10ms 27 Nov 2025 540th koipondx86 645 123 2ms 8 Nov 2024 541st frankgraziano 645 128 7ms 21 Feb 2026 542nd Apataras 645 145 390ms 25 Jun 2025 543rd tomh1012 643 111 500ms 8 Sep 2025 544th Shanethegamer 🇺🇸 643 124 7ms 4 Oct 2024 545th elgan65536 🇺🇸 643 146 159ms 2 Oct 2024 545th luuumine 🇫🇷 643 146 151ms 26 Nov 2025 547th btjones0 640 101 17ms 2 Dec 2024 548th dokutan 640 146 379ms 23 Nov 2025 549th stefangimmillaro 639 73 314ms 1 Oct 2024 550th MeWhenI 🇻🇦 638 73 7ms 3 Oct 2024 551st Yax42 🇫🇷 638 108 2ms 11 days ago 552nd emgordon154 636 111 4ms 12 Jan 2025 553rd MeWhenI 🇻🇦 634 91 1,014ms 29 Aug 2025 554th annaproxy 634 102 17ms 1 Oct 2024 554th xyangst 634 102 11ms 1 Oct 2024 554th aksyristos 634 102 18ms 3 days ago 557th msbranicky 634 188 301ms 7 Jan 2025 558th Florian-Mt 632 102 10ms 5 Dec 2025 559th Shanethegamer 🇺🇸 631 74 324ms 16 Oct 2024 560th albanian-laundromat 631 264 1,461ms 3 Nov 2025 First Prev 481–560 of 930 Next Last