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 dokutan 690 116 7ms 19 Oct 2024 482nd MeWhenI 🇻🇦 688 68 286ms 2 Oct 2024 483rd DialFrost 🇸🇬 688 94 17ms 1 Oct 2024 484th aDwarfNamedUrist 687 162 138ms 1 Sep 2025 485th ovs-code 🇩🇪 686 84 524ms 3 Oct 2024 486th XenThe 🇬🇧 686 94 11ms 7 Jul 2025 487th KatieLG 🇬🇧 685 70 37ms 2 Oct 2025 488th the-zammers 682 163 149ms 1 Dec 2024 489th GrayJoKing 🇦🇺 681 79 1,204ms 1 Oct 2024 490th snoozingnewt 🇨🇦 680 95 78ms 23 Oct 2025 491st tailorspy 680 128 440ms 4 Oct 2024 492nd jkelly467 675 99 2,591ms 22 Jan 2026 493rd emgordon154 675 115 111ms 9 Dec 2025 494th Yax42 🇫🇷 675 129 87ms 8 Jan 2026 494th emgordon154 675 129 60ms 8 Feb 2026 496th jerrandolph 675 177 368ms 25 Sep 2025 496th CaedenHarper 🇨🇦 675 177 326ms 17 Nov 2025 498th MeWhenI 🇻🇦 674 96 17ms 30 Jul 2025 499th HumanoidCPU 672 96 12ms 7 Mar 2025 500th error256 672 101 5ms 24 Oct 2024 501st Shanethegamer 🇺🇸 669 65 1ms 1 Oct 2024 502nd solisolu 669 103 2ms 13 days ago 503rd CaedenHarper 🇨🇦 668 140 571ms 3 Oct 2025 504th GolfingSuccess 🇬🇷 668 174 40ms 21 days ago 505th Shanethegamer 🇺🇸 667 172 39ms 2 Oct 2024 506th dbut2 🇦🇺 667 179 327ms 31 Oct 2024 507th two-bad 🇬🇧 665 97 12ms 2 Oct 2024 507th LordSir101 665 97 11ms 10 Aug 2025 509th yeminghan2021 664 131 65ms 3 Feb 2026 510th AlephSquirrel 664 146 4ms 14 May 2025 511th BlankSpruce 663 104 2ms 1 Oct 2024 512th snoozingnewt 🇨🇦 663 180 338ms 2 Nov 2025 513th 4hg 🇺🇸 662 59 34ms 5 Oct 2024 514th MeWhenI 🇻🇦 662 88 143ms 2 Oct 2024 514th Shanethegamer 🇺🇸 662 88 138ms 5 Oct 2024 516th error256 661 142 156ms 31 May 2025 517th albanian-laundromat 🇺🇸 661 291 12ms 12 days ago 518th GolfingSuccess 🇬🇷 660 98 18ms 5 Oct 2024 518th JunkIce 660 98 10ms 3 Dec 2024 520th MeWhenI 🇻🇦 659 174 41ms 13 Feb 2025 521st BambooleanLogic 🇸🇪 658 98 10ms 21 Oct 2024 522nd Herbert00709 🇵🇱 657 105 2ms 14 Jun 2025 523rd MeWhenI 🇻🇦 655 88 524ms 2 Oct 2024 524th voytxt 🇨🇿 654 89 131ms 17 Apr 2025 524th dokutan 654 89 134ms 28 Jun 2025 526th SirBogman 🇺🇸 653 99 17ms 8 Oct 2024 526th solisolu 653 99 22ms 13 Mar 2026 528th w911 653 183 327ms 7 Oct 2024 529th frankgraziano 652 128 7ms 21 Feb 2026 530th rucin93 🇵🇱 652 144 156ms 28 Oct 2024 531st dokutan 651 99 10ms 28 Jun 2025 532nd DialFrost 🇸🇬 650 67 2ms 22 Dec 2024 533rd rniii 650 106 1ms 2 Oct 2024 533rd gastropner 650 106 2ms 11 Feb 2025 535th scpchicken 🇵🇼 648 61 4ms 11 days ago 536th FlorianCassayre 🇫🇷 647 100 17ms 1 Oct 2024 536th bzijlema 🇳🇱 647 100 19ms 10 Oct 2024 536th bricknellj 647 100 20ms 4 Mar 2025 539th koipondx86 646 123 2ms 8 Nov 2024 540th CaedenHarper 🇨🇦 645 100 13ms 22 Aug 2025 540th iczelia 🇩🇪 645 100 10ms 11 Oct 2025 540th Yax42 🇫🇷 645 100 12ms 27 Nov 2025 543rd Shanethegamer 🇺🇸 645 124 6ms 4 Oct 2024 544th Apataras 645 145 390ms 25 Jun 2025 545th tomh1012 644 111 529ms 8 Sep 2025 546th elgan65536 🇺🇸 643 146 159ms 2 Oct 2024 546th luuumine 🇫🇷 643 146 151ms 26 Nov 2025 548th stefangimmillaro 641 73 304ms 1 Oct 2024 549th emgordon154 641 111 4ms 12 Jan 2025 550th btjones0 640 101 18ms 2 Dec 2024 551st dokutan 640 146 379ms 23 Nov 2025 552nd MeWhenI 🇻🇦 638 73 7ms 3 Oct 2024 553rd Yax42 🇫🇷 638 108 2ms 23 days ago 554th MeWhenI 🇻🇦 635 91 1,014ms 29 Aug 2025 555th msbranicky 635 188 328ms 7 Jan 2025 556th annaproxy 634 102 18ms 1 Oct 2024 556th xyangst 634 102 10ms 1 Oct 2024 556th aksyristos 634 102 19ms 15 days ago 556th flekAI 634 102 18ms 4 days ago 556th scpchicken 🇵🇼 634 102 17ms 3 days ago First Prev 481–560 of 999 Next Last