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 NickTheEASDude 🇺🇸 691 115 3ms 17 Dec 2024 482nd Alex-x90 🇺🇸 690 100 2ms 1 Oct 2024 482nd madex 🇩🇪 690 100 2ms 9 days ago 484th dokutan 690 116 7ms 19 Oct 2024 485th MeWhenI 🇻🇦 688 68 286ms 2 Oct 2024 486th DialFrost 🇸🇬 688 94 17ms 1 Oct 2024 487th aDwarfNamedUrist 687 162 138ms 1 Sep 2025 488th ovs-code 🇩🇪 686 84 524ms 3 Oct 2024 489th XenThe 🇬🇧 686 94 11ms 7 Jul 2025 490th KatieLG 🇬🇧 685 70 37ms 2 Oct 2025 491st the-zammers 682 163 149ms 1 Dec 2024 492nd GrayJoKing 🇦🇺 681 79 1,204ms 1 Oct 2024 493rd snoozingnewt 🇨🇦 680 95 78ms 23 Oct 2025 494th tailorspy 680 128 440ms 4 Oct 2024 495th jkelly467 675 99 2,591ms 22 Jan 2026 496th emgordon154 675 115 111ms 9 Dec 2025 497th Yax42 🇫🇷 675 129 87ms 8 Jan 2026 497th emgordon154 675 129 60ms 8 Feb 2026 499th jerrandolph 675 177 368ms 25 Sep 2025 499th CaedenHarper 🇨🇦 675 177 326ms 17 Nov 2025 501st MeWhenI 🇻🇦 674 96 17ms 30 Jul 2025 502nd HumanoidCPU 672 96 12ms 7 Mar 2025 503rd error256 672 101 5ms 24 Oct 2024 504th Shanethegamer 🇺🇸 671 65 1ms 1 Oct 2024 505th solisolu 669 103 2ms 16 days ago 506th CaedenHarper 🇨🇦 668 140 571ms 3 Oct 2025 507th GolfingSuccess 🇬🇷 668 174 40ms 25 days ago 508th Shanethegamer 🇺🇸 667 172 39ms 2 Oct 2024 509th dbut2 🇦🇺 667 179 327ms 31 Oct 2024 510th two-bad 🇬🇧 665 97 12ms 2 Oct 2024 510th LordSir101 665 97 11ms 10 Aug 2025 512th yeminghan2021 664 131 65ms 3 Feb 2026 513th AlephSquirrel 664 146 4ms 14 May 2025 514th BlankSpruce 663 104 2ms 1 Oct 2024 515th snoozingnewt 🇨🇦 663 180 338ms 2 Nov 2025 516th 4hg 🇺🇸 662 59 34ms 5 Oct 2024 517th MeWhenI 🇻🇦 662 88 130ms 2 Oct 2024 517th Shanethegamer 🇺🇸 662 88 135ms 5 Oct 2024 519th error256 661 142 171ms 31 May 2025 520th albanian-laundromat 🇺🇸 661 291 12ms 16 days ago 521st GolfingSuccess 🇬🇷 660 98 18ms 5 Oct 2024 521st JunkIce 660 98 10ms 3 Dec 2024 523rd MeWhenI 🇻🇦 659 174 41ms 13 Feb 2025 524th BambooleanLogic 🇸🇪 658 98 10ms 21 Oct 2024 525th Herbert00709 🇵🇱 657 105 2ms 14 Jun 2025 526th MeWhenI 🇻🇦 654 88 524ms 2 Oct 2024 527th voytxt 🇨🇿 654 89 131ms 17 Apr 2025 527th dokutan 654 89 132ms 28 Jun 2025 529th SirBogman 🇺🇸 653 99 17ms 8 Oct 2024 529th solisolu 653 99 22ms 13 Mar 2026 531st w911 653 183 327ms 7 Oct 2024 532nd frankgraziano 652 128 7ms 21 Feb 2026 533rd rucin93 🇵🇱 652 144 153ms 28 Oct 2024 534th DialFrost 🇸🇬 651 67 2ms 22 Dec 2024 535th dokutan 651 99 10ms 28 Jun 2025 536th rniii 650 106 1ms 2 Oct 2024 536th gastropner 650 106 2ms 11 Feb 2025 538th scpchicken 🇵🇼 648 61 4ms 15 days ago 539th FlorianCassayre 🇫🇷 647 100 17ms 1 Oct 2024 539th bzijlema 🇳🇱 647 100 19ms 10 Oct 2024 539th bricknellj 647 100 20ms 4 Mar 2025 542nd koipondx86 646 123 2ms 8 Nov 2024 543rd CaedenHarper 🇨🇦 645 100 13ms 22 Aug 2025 543rd iczelia 🇩🇪 645 100 10ms 11 Oct 2025 543rd Yax42 🇫🇷 645 100 12ms 27 Nov 2025 546th Shanethegamer 🇺🇸 645 124 6ms 4 Oct 2024 547th Apataras 645 145 390ms 25 Jun 2025 548th tomh1012 644 111 529ms 8 Sep 2025 549th elgan65536 🇺🇸 643 146 174ms 2 Oct 2024 549th luuumine 🇫🇷 643 146 153ms 26 Nov 2025 551st stefangimmillaro 641 73 304ms 1 Oct 2024 552nd emgordon154 641 111 4ms 12 Jan 2025 553rd btjones0 640 101 18ms 2 Dec 2024 554th dokutan 640 146 379ms 23 Nov 2025 555th MeWhenI 🇻🇦 638 73 7ms 3 Oct 2024 556th Yax42 🇫🇷 638 108 2ms 26 days ago 557th MeWhenI 🇻🇦 635 91 1,014ms 29 Aug 2025 558th msbranicky 635 188 328ms 7 Jan 2025 559th annaproxy 634 102 18ms 1 Oct 2024 559th xyangst 634 102 10ms 1 Oct 2024 First Prev 481–560 of 1,002 Next Last