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 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 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 Apéry’s Constant Binary Lambda Calculus Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> 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 ALGOL 68 APL ArkScript 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 ><> 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 ALGOL 68 APL ArkScript 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 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 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 Apéry’s Constant Binary Lambda Calculus Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 241st error256 805 116 494ms 24 Sep 2025 242nd albanian-laundromat 805 148 281ms 3 Dec 2025 243rd GrayJoKing 🇦🇺 803 58 6ms 24 Oct 2024 244th Shanethegamer 🇺🇸 803 138 142ms 3 Oct 2024 245th stefangimmillaro 802 89 453ms 4 Oct 2024 246th DialFrost 🇸🇬 802 106 24ms 23 Mar 2025 247th ovs-code 🇩🇪 802 119 14ms 1 Oct 2024 248th albanian-laundromat 802 120 42ms 3 Nov 2025 249th MeWhenI 🇻🇦 801 127 2ms 5 Oct 2024 249th albanian-laundromat 801 127 3ms 3 Nov 2025 251st Shanethegamer 🇺🇸 801 208 1,404ms 14 Apr 2025 251st DialFrost 🇸🇬 801 208 1,411ms 18 Apr 2025 253rd sean-niemann 🇺🇸 799 92 116ms 1 Oct 2025 254th snoozingnewt 🇨🇦 798 72 477ms 6 Dec 2025 255th Babafaba 798 81 17ms 11 Nov 2025 256th albanian-laundromat 797 74 1,047ms 3 Nov 2025 257th DialFrost 🇸🇬 797 85 7ms 1 Oct 2024 257th xsot 🇸🇬 797 85 5ms 7 Oct 2024 259th MeWhenI 🇻🇦 797 109 389ms 2 Oct 2024 260th 2bular 796 49 31ms 8 Nov 2025 261st kg583 🇺🇸 796 124 7ms 20 Oct 2024 261st AlephSquirrel 796 124 7ms 21 Oct 2024 263rd m-tkach 🇺🇦 796 138 27ms 3 Oct 2024 264th tayloia 🇬🇧 795 81 12ms 3 Oct 2024 264th targrik 795 81 9ms 8 Feb 2025 264th Lv0Sys 🇵🇱 795 81 9ms 10 Dec 2025 267th DialFrost 🇸🇬 794 84 2,408ms 26 Oct 2024 268th stefangimmillaro 794 87 110ms 4 Oct 2024 269th Shanethegamer 🇺🇸 794 102 451ms 4 Oct 2024 270th Shanethegamer 🇺🇸 794 128 2ms 3 Oct 2024 271st MeWhenI 🇻🇦 793 90 461ms 2 Oct 2024 272nd Natanaelel 🇸🇪 791 48 118ms 1 Oct 2024 273rd jared-hughes 791 203 101ms 20 Dec 2024 274th saito-ta 🇯🇵 790 74 7ms 1 Oct 2024 275th xsot 🇸🇬 790 125 7ms 20 Oct 2024 276th MeWhenI 🇻🇦 789 122 39ms 5 Oct 2024 277th emgordon154 789 151 286ms 17 Jan 2025 278th SB-945 788 82 17ms 1 Oct 2024 278th HumanoidCPU 788 82 65ms 7 Mar 2025 278th fkantelberg 788 82 11ms 11 Jul 2025 278th BrunoVisnadi 🇧🇷 788 82 10ms 21 Sep 2025 282nd emgordon154 787 164 1,815ms 22 Dec 2025 283rd KingSkyrock 🇺🇸 785 82 10ms 14 Oct 2024 284th Shanethegamer 🇺🇸 785 88 108ms 4 Oct 2024 285th kg583 🇺🇸 785 94 4ms 13 Nov 2025 286th namelessiw 785 119 565ms 9 Oct 2025 287th SirBogman 🇺🇸 785 138 39ms 11 Jul 2025 288th stefangimmillaro 784 61 35ms 1 Oct 2024 289th Shanethegamer 🇺🇸 784 91 455ms 3 Oct 2024 290th edsrzf 🇳🇿 784 119 154ms 23 Jul 2025 291st Shanethegamer 🇺🇸 784 152 281ms 3 Oct 2024 291st targrik 784 152 283ms 7 Jul 2025 293rd MeWhenI 🇻🇦 782 88 1ms 2 Oct 2024 294th SirBogman 🇺🇸 780 50 34ms 8 Jul 2025 295th Bmrl7 779 83 10ms 3 Oct 2024 295th KatieLG 🇬🇧 779 83 17ms 17 Jan 2026 297th sean-niemann 🇺🇸 779 107 332ms 3 Oct 2024 298th Shanethegamer 🇺🇸 778 120 364ms 24 Sep 2025 299th bizy-coder 777 74 504ms 1 Oct 2024 299th m-tkach 🇺🇦 777 74 508ms 3 Oct 2024 301st adriweb 🇫🇷 777 102 1ms 5 Oct 2024 302nd DialFrost 🇸🇬 776 76 1,013ms 30 Aug 2025 303rd uttumuttu 🇫🇮 776 83 10ms 1 Oct 2024 303rd KatieLG 🇬🇧 776 83 10ms 1 Oct 2024 303rd Larento 776 83 11ms 4 Nov 2024 303rd Andrey-Plotnikov 776 83 13ms 13 Jan 2025 303rd nathanadams 🇳🇿 776 83 10ms 6 Oct 2025 308th m-tkach 🇺🇦 776 131 3ms 4 Oct 2024 309th duckyluuk 🇳🇱 775 97 10ms 25 Nov 2025 310th Natanaelel 🇸🇪 775 143 145ms 20 Apr 2025 311th DialFrost 🇸🇬 772 121 369ms 24 Sep 2025 312th sisyphus-ppcg 🇦🇺 771 62 53ms 3 Oct 2024 313th sean-niemann 🇺🇸 771 105 461ms 1 Oct 2024 314th targrik 770 88 8ms 7 Feb 2025 315th Waffle3z 770 103 2ms 2 Oct 2024 316th retrohun 769 63 20ms 2 Oct 2024 317th AlephSquirrel 769 84 20ms 1 Oct 2024 317th kops-cg 769 84 20ms 22 Feb 2025 317th xnor-gate 769 84 21ms 23 Feb 2025 320th DialFrost 🇸🇬 769 90 2ms 18 Nov 2025 First Prev 241–320 of 884 Next Last