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 KatieLG 🇬🇧 684 70 37ms 2 Oct 2025 482nd aDwarfNamedUrist 684 162 138ms 1 Sep 2025 483rd the-zammers 680 163 149ms 1 Dec 2024 484th tailorspy 679 128 477ms 4 Oct 2024 485th GrayJoKing 🇦🇺 678 79 1,204ms 1 Oct 2024 486th snoozingnewt 🇨🇦 676 95 78ms 23 Oct 2025 487th jkelly467 674 99 2,688ms 22 Jan 2026 488th Yax42 🇫🇷 674 129 76ms 8 Jan 2026 488th emgordon154 674 129 65ms 8 Feb 2026 490th GolfingSuccess 🇬🇷 674 174 34ms 9 days ago 491st MeWhenI 🇻🇦 673 96 17ms 30 Jul 2025 492nd jerrandolph 673 177 295ms 25 Sep 2025 492nd CaedenHarper 🇨🇦 673 177 312ms 17 Nov 2025 494th HumanoidCPU 672 96 11ms 7 Mar 2025 495th error256 671 101 5ms 24 Oct 2024 496th emgordon154 670 115 111ms 9 Dec 2025 497th madex 🇩🇪 669 103 1ms 2 Oct 2024 497th solisolu 669 103 2ms 39 hours ago 499th Shanethegamer 🇺🇸 668 65 1ms 1 Oct 2024 500th CaedenHarper 🇨🇦 668 140 571ms 3 Oct 2025 501st dbut2 🇦🇺 666 179 284ms 31 Oct 2024 502nd two-bad 🇬🇧 665 97 10ms 2 Oct 2024 502nd LordSir101 665 97 10ms 10 Aug 2025 504th BlankSpruce 663 104 2ms 1 Oct 2024 505th yeminghan2021 663 131 65ms 3 Feb 2026 506th Shanethegamer 🇺🇸 663 172 39ms 2 Oct 2024 507th snoozingnewt 🇨🇦 662 180 295ms 2 Nov 2025 508th 4hg 🇺🇸 661 59 34ms 5 Oct 2024 509th MeWhenI 🇻🇦 660 88 136ms 2 Oct 2024 509th Shanethegamer 🇺🇸 660 88 146ms 5 Oct 2024 511th GolfingSuccess 🇬🇷 660 98 17ms 5 Oct 2024 511th JunkIce 660 98 10ms 3 Dec 2024 513th error256 660 142 156ms 31 May 2025 514th BambooleanLogic 🇸🇪 658 98 10ms 21 Oct 2024 515th Herbert00709 🇵🇱 657 105 2ms 14 Jun 2025 516th AlephSquirrel 657 146 4ms 14 May 2025 517th MeWhenI 🇻🇦 655 174 41ms 13 Feb 2025 518th jwhear 🇺🇸 655 197 1,696ms 1 Oct 2024 519th albanian-laundromat 655 291 12ms 21 hours ago 520th MeWhenI 🇻🇦 654 88 440ms 2 Oct 2024 521st voytxt 🇨🇿 653 89 153ms 17 Apr 2025 521st dokutan 653 89 138ms 28 Jun 2025 523rd SirBogman 🇺🇸 653 99 16ms 8 Oct 2024 523rd solisolu 653 99 17ms 22 days ago 525th dokutan 651 99 9ms 28 Jun 2025 526th rucin93 🇵🇱 651 144 164ms 28 Oct 2024 527th w911 651 183 281ms 7 Oct 2024 528th rniii 650 106 1ms 2 Oct 2024 528th gastropner 650 106 2ms 11 Feb 2025 530th DialFrost 🇸🇬 648 67 2ms 22 Dec 2024 531st FlorianCassayre 🇫🇷 647 100 17ms 1 Oct 2024 531st bzijlema 🇳🇱 647 100 18ms 10 Oct 2024 531st bricknellj 647 100 17ms 4 Mar 2025 534th CaedenHarper 🇨🇦 645 100 10ms 22 Aug 2025 534th iczelia 🇩🇪 645 100 9ms 11 Oct 2025 534th Yax42 🇫🇷 645 100 10ms 27 Nov 2025 537th koipondx86 645 123 2ms 8 Nov 2024 538th frankgraziano 645 128 7ms 21 Feb 2026 539th Apataras 645 145 390ms 25 Jun 2025 540th tomh1012 643 111 500ms 8 Sep 2025 541st Shanethegamer 🇺🇸 643 124 7ms 4 Oct 2024 542nd elgan65536 🇺🇸 642 146 159ms 2 Oct 2024 542nd luuumine 🇫🇷 642 146 151ms 26 Nov 2025 544th btjones0 640 101 17ms 2 Dec 2024 545th dokutan 640 146 379ms 23 Nov 2025 546th stefangimmillaro 639 73 314ms 1 Oct 2024 547th MeWhenI 🇻🇦 638 73 7ms 3 Oct 2024 548th Yax42 🇫🇷 638 108 2ms 11 days ago 549th emgordon154 636 111 4ms 12 Jan 2025 550th MeWhenI 🇻🇦 634 91 1,014ms 29 Aug 2025 551st annaproxy 634 102 17ms 1 Oct 2024 551st xyangst 634 102 11ms 1 Oct 2024 551st aksyristos 634 102 18ms 3 days ago 554th msbranicky 634 188 301ms 7 Jan 2025 555th Florian-Mt 632 102 10ms 5 Dec 2025 556th Shanethegamer 🇺🇸 631 74 324ms 16 Oct 2024 557th albanian-laundromat 631 264 1,461ms 3 Nov 2025 558th robin-scragg 628 103 11ms 21 Aug 2025 559th Jonatan6 🇩🇰 627 110 2ms 24 Oct 2024 560th DialFrost 🇸🇬 627 304 153ms 13 Aug 2025 First Prev 481–560 of 927 Next Last