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 687 116 7ms 19 Oct 2024 482nd MeWhenI 🇻🇦 686 68 223ms 2 Oct 2024 483rd XenThe 🇬🇧 686 94 11ms 7 Jul 2025 484th ovs-code 🇩🇪 685 84 524ms 3 Oct 2024 485th KatieLG 🇬🇧 684 70 37ms 2 Oct 2025 486th aDwarfNamedUrist 684 162 138ms 1 Sep 2025 487th the-zammers 680 163 149ms 1 Dec 2024 488th tailorspy 679 128 440ms 4 Oct 2024 489th GrayJoKing 🇦🇺 678 79 1,204ms 1 Oct 2024 490th jusaka 676 42 3ms 2 days ago 491st snoozingnewt 🇨🇦 676 95 78ms 23 Oct 2025 492nd jkelly467 674 99 2,591ms 22 Jan 2026 493rd Yax42 🇫🇷 674 129 87ms 8 Jan 2026 493rd emgordon154 674 129 60ms 8 Feb 2026 495th GolfingSuccess 🇬🇷 674 174 34ms 16 days ago 496th MeWhenI 🇻🇦 673 96 17ms 30 Jul 2025 497th jerrandolph 673 177 368ms 25 Sep 2025 497th CaedenHarper 🇨🇦 673 177 326ms 17 Nov 2025 499th HumanoidCPU 672 96 12ms 7 Mar 2025 500th error256 671 101 5ms 24 Oct 2024 501st emgordon154 670 115 111ms 9 Dec 2025 502nd solisolu 669 103 2ms 7 days ago 503rd Shanethegamer 🇺🇸 668 65 1ms 1 Oct 2024 504th CaedenHarper 🇨🇦 667 140 571ms 3 Oct 2025 505th dbut2 🇦🇺 666 179 327ms 31 Oct 2024 506th two-bad 🇬🇧 665 97 11ms 2 Oct 2024 506th LordSir101 665 97 10ms 10 Aug 2025 508th BlankSpruce 663 104 2ms 1 Oct 2024 509th yeminghan2021 663 131 65ms 3 Feb 2026 510th Shanethegamer 🇺🇸 663 172 39ms 2 Oct 2024 511th snoozingnewt 🇨🇦 662 180 338ms 2 Nov 2025 512th 4hg 🇺🇸 661 59 34ms 5 Oct 2024 513th error256 661 142 156ms 31 May 2025 514th MeWhenI 🇻🇦 660 88 143ms 2 Oct 2024 514th Shanethegamer 🇺🇸 660 88 138ms 5 Oct 2024 516th GolfingSuccess 🇬🇷 660 98 18ms 5 Oct 2024 516th JunkIce 660 98 10ms 3 Dec 2024 518th BambooleanLogic 🇸🇪 658 98 12ms 21 Oct 2024 519th AlephSquirrel 657 146 4ms 14 May 2025 520th Herbert00709 🇵🇱 656 105 2ms 14 Jun 2025 521st MeWhenI 🇻🇦 655 174 41ms 13 Feb 2025 522nd jwhear 🇺🇸 655 197 1,696ms 1 Oct 2024 523rd albanian-laundromat 🇺🇸 655 291 12ms 6 days ago 524th MeWhenI 🇻🇦 654 88 524ms 2 Oct 2024 525th voytxt 🇨🇿 653 89 131ms 17 Apr 2025 525th dokutan 653 89 134ms 28 Jun 2025 527th SirBogman 🇺🇸 653 99 17ms 8 Oct 2024 527th solisolu 653 99 22ms 13 Mar 2026 529th rucin93 🇵🇱 652 144 156ms 28 Oct 2024 530th dokutan 651 99 10ms 28 Jun 2025 531st w911 651 183 327ms 7 Oct 2024 532nd rniii 650 106 1ms 2 Oct 2024 532nd gastropner 650 106 2ms 11 Feb 2025 534th DialFrost 🇸🇬 648 67 2ms 22 Dec 2024 535th scpchicken 🇵🇼 647 61 4ms 5 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 CaedenHarper 🇨🇦 645 100 10ms 22 Aug 2025 539th iczelia 🇩🇪 645 100 10ms 11 Oct 2025 539th Yax42 🇫🇷 645 100 10ms 27 Nov 2025 542nd koipondx86 645 123 2ms 8 Nov 2024 543rd frankgraziano 645 128 7ms 21 Feb 2026 544th Apataras 644 145 390ms 25 Jun 2025 545th tomh1012 643 111 442ms 8 Sep 2025 546th Shanethegamer 🇺🇸 643 124 6ms 4 Oct 2024 547th elgan65536 🇺🇸 643 146 159ms 2 Oct 2024 547th luuumine 🇫🇷 643 146 151ms 26 Nov 2025 549th btjones0 640 101 18ms 2 Dec 2024 550th dokutan 640 146 379ms 23 Nov 2025 551st stefangimmillaro 639 73 253ms 1 Oct 2024 552nd MeWhenI 🇻🇦 638 73 7ms 3 Oct 2024 553rd Yax42 🇫🇷 638 108 2ms 17 days ago 554th emgordon154 636 111 4ms 12 Jan 2025 555th MeWhenI 🇻🇦 634 91 1,014ms 29 Aug 2025 556th annaproxy 634 102 18ms 1 Oct 2024 556th xyangst 634 102 10ms 1 Oct 2024 556th aksyristos 634 102 19ms 9 days ago 559th msbranicky 634 188 328ms 7 Jan 2025 560th Florian-Mt 632 102 10ms 5 Dec 2025 First Prev 481–560 of 930 Next Last