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 MeWhenI 🇻🇦 686 68 223ms 2 Oct 2024 482nd ovs-code 🇩🇪 686 84 524ms 3 Oct 2024 483rd XenThe 🇬🇧 686 94 11ms 7 Jul 2025 484th KatieLG 🇬🇧 684 70 37ms 2 Oct 2025 485th aDwarfNamedUrist 684 162 138ms 1 Sep 2025 486th the-zammers 680 163 149ms 1 Dec 2024 487th tailorspy 679 128 440ms 4 Oct 2024 488th GrayJoKing 🇦🇺 678 79 1,204ms 1 Oct 2024 489th snoozingnewt 🇨🇦 676 95 78ms 23 Oct 2025 490th MeWhenI 🇻🇦 674 96 17ms 30 Jul 2025 491st jkelly467 674 99 2,591ms 22 Jan 2026 492nd Yax42 🇫🇷 674 129 87ms 8 Jan 2026 492nd emgordon154 674 129 60ms 8 Feb 2026 494th GolfingSuccess 🇬🇷 674 174 40ms 19 days ago 495th jerrandolph 673 177 368ms 25 Sep 2025 495th CaedenHarper 🇨🇦 673 177 326ms 17 Nov 2025 497th HumanoidCPU 672 96 12ms 7 Mar 2025 498th error256 671 101 9ms 24 Oct 2024 499th emgordon154 670 115 111ms 9 Dec 2025 500th solisolu 669 103 2ms 11 days ago 501st Shanethegamer 🇺🇸 668 65 1ms 1 Oct 2024 502nd CaedenHarper 🇨🇦 667 140 571ms 3 Oct 2025 503rd dbut2 🇦🇺 666 179 327ms 31 Oct 2024 504th two-bad 🇬🇧 665 97 11ms 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 338ms 2 Nov 2025 510th 4hg 🇺🇸 661 59 34ms 5 Oct 2024 511th MeWhenI 🇻🇦 660 88 143ms 2 Oct 2024 511th Shanethegamer 🇺🇸 660 88 138ms 5 Oct 2024 513th GolfingSuccess 🇬🇷 660 98 18ms 5 Oct 2024 513th JunkIce 660 98 10ms 3 Dec 2024 515th error256 660 142 156ms 31 May 2025 516th BambooleanLogic 🇸🇪 658 98 12ms 21 Oct 2024 517th AlephSquirrel 657 146 4ms 14 May 2025 518th Herbert00709 🇵🇱 656 105 2ms 14 Jun 2025 519th MeWhenI 🇻🇦 655 174 41ms 13 Feb 2025 520th albanian-laundromat 🇺🇸 655 291 12ms 10 days ago 521st MeWhenI 🇻🇦 654 88 524ms 2 Oct 2024 522nd voytxt 🇨🇿 653 89 131ms 17 Apr 2025 522nd dokutan 653 89 134ms 28 Jun 2025 524th SirBogman 🇺🇸 653 99 17ms 8 Oct 2024 524th solisolu 653 99 22ms 13 Mar 2026 526th dokutan 651 99 10ms 28 Jun 2025 527th rucin93 🇵🇱 651 144 156ms 28 Oct 2024 528th w911 651 183 327ms 7 Oct 2024 529th rniii 650 106 1ms 2 Oct 2024 529th gastropner 650 106 2ms 11 Feb 2025 531st DialFrost 🇸🇬 648 67 2ms 22 Dec 2024 532nd scpchicken 🇵🇼 647 61 4ms 9 days ago 533rd FlorianCassayre 🇫🇷 647 100 17ms 1 Oct 2024 533rd bzijlema 🇳🇱 647 100 19ms 10 Oct 2024 533rd bricknellj 647 100 20ms 4 Mar 2025 536th CaedenHarper 🇨🇦 645 100 10ms 22 Aug 2025 536th iczelia 🇩🇪 645 100 10ms 11 Oct 2025 536th Yax42 🇫🇷 645 100 10ms 27 Nov 2025 539th koipondx86 645 123 2ms 8 Nov 2024 540th frankgraziano 645 128 8ms 21 Feb 2026 541st tomh1012 644 111 442ms 8 Sep 2025 542nd Apataras 644 145 390ms 25 Jun 2025 543rd Shanethegamer 🇺🇸 643 124 6ms 4 Oct 2024 544th elgan65536 🇺🇸 642 146 159ms 2 Oct 2024 544th luuumine 🇫🇷 642 146 151ms 26 Nov 2025 546th btjones0 640 101 18ms 2 Dec 2024 547th dokutan 640 146 379ms 23 Nov 2025 548th stefangimmillaro 639 73 253ms 1 Oct 2024 549th MeWhenI 🇻🇦 638 73 7ms 3 Oct 2024 550th Yax42 🇫🇷 638 108 2ms 21 days ago 551st emgordon154 636 111 4ms 12 Jan 2025 552nd MeWhenI 🇻🇦 634 91 1,014ms 29 Aug 2025 553rd annaproxy 634 102 18ms 1 Oct 2024 553rd xyangst 634 102 10ms 1 Oct 2024 553rd aksyristos 634 102 19ms 13 days ago 553rd flekAI 634 102 18ms 2 days ago 553rd scpchicken 🇵🇼 634 102 17ms 46 hours ago 558th msbranicky 634 188 328ms 7 Jan 2025 559th Florian-Mt 632 102 10ms 5 Dec 2025 560th Shanethegamer 🇺🇸 631 74 231ms 16 Oct 2024 First Prev 481–560 of 929 Next Last