Card Number Validation in all languages in bytes. Cheevos Holes Recent Holes Langs Medals Misc 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 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 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 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 Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Tower of Hanoi Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir 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 Arturo Befunge BQN CJam CoffeeScript Egel Erlang Fennel Harbour Hare Haxe Hush Hy iogii Knight 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 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 Arturo Befunge BQN CJam CoffeeScript Egel Erlang Fennel Harbour Hare Haxe Hush Hy iogii Knight 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 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 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 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 Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Tower of Hanoi Turtle Tutorial # Golfer Points Bytes Time Submitted 226th emgordon154 813 205 799ms 7 Mar 2025 227th Shanethegamer 🇺🇸 812 70 986ms 9 Apr 2025 228th ovs-code 🇩🇪 810 106 378ms 1 Oct 2024 228th inventshah 810 106 361ms 1 Oct 2024 230th kg583 🇺🇸 810 124 7ms 20 Oct 2024 230th AlephSquirrel 810 124 7ms 21 Oct 2024 232nd Natanaelel 🇸🇪 809 59 36ms 7 Feb 2025 233rd stefangimmillaro 808 134 56ms 3 Oct 2024 234th sean-niemann 🇺🇸 807 115 349ms 24 Sep 2025 234th stefangimmillaro 807 115 333ms 6 Oct 2025 236th stefangimmillaro 807 126 2ms 3 Oct 2024 237th GolfingSuccess 🇬🇷 806 31 69ms 5 Oct 2024 238th kg583 🇺🇸 806 82 615ms 1 Oct 2024 238th sean-niemann 🇺🇸 806 82 450ms 23 Dec 2024 240th trinityy-7 804 80 10ms 23 Jul 2025 241st SirBogman 🇺🇸 804 99 18ms 8 Oct 2024 242nd MeWhenI 🇻🇦 804 186 18ms 2 Oct 2024 243rd GrayJoKing 🇦🇺 803 58 7ms 24 Oct 2024 244th xsot 🇸🇬 803 125 7ms 20 Oct 2024 245th antimon2 🇯🇵 802 70 567ms 9 Oct 2024 246th DialFrost 🇸🇬 802 106 25ms 23 Mar 2025 247th ovs-code 🇩🇪 802 119 25ms 1 Oct 2024 248th ovs-code 🇩🇪 801 75 1,110ms 1 Oct 2024 249th MeWhenI 🇻🇦 801 127 2ms 5 Oct 2024 249th albanian-laundromat 801 127 3ms 5 days ago 251st Shanethegamer 🇺🇸 801 208 1,934ms 14 Apr 2025 251st DialFrost 🇸🇬 801 208 817ms 18 Apr 2025 253rd stefangimmillaro 800 89 421ms 4 Oct 2024 254th error256 800 116 345ms 24 Sep 2025 255th Shanethegamer 🇺🇸 800 138 171ms 3 Oct 2024 256th duckyluuk 🇳🇱 797 83 403ms 3 Oct 2024 256th emgordon154 797 83 563ms 18 Nov 2024 258th MeWhenI 🇻🇦 797 88 2ms 2 Oct 2024 259th anter69 🇭🇺 796 100 17ms 1 Oct 2024 259th bzijlema 🇳🇱 796 100 16ms 10 Oct 2024 259th bricknellj 796 100 17ms 4 Mar 2025 262nd DialFrost 🇸🇬 795 85 7ms 1 Oct 2024 262nd xsot 🇸🇬 795 85 4ms 7 Oct 2024 264th sean-niemann 🇺🇸 795 92 112ms 1 Oct 2025 265th albanian-laundromat 794 74 748ms 5 days ago 266th tayloia 🇬🇧 794 81 10ms 3 Oct 2024 266th targrik 794 81 10ms 8 Feb 2025 268th stefangimmillaro 794 87 125ms 4 Oct 2024 269th duckyluuk 🇳🇱 794 99 11ms 17 Dec 2024 270th Shanethegamer 🇺🇸 794 102 384ms 4 Oct 2024 271st edsrzf 🇳🇿 794 117 348ms 24 Sep 2025 272nd Shanethegamer 🇺🇸 794 128 2ms 3 Oct 2024 273rd kg583 🇺🇸 794 160 39ms 13 Feb 2025 273rd CLOStrophobic 🇮🇹 794 160 43ms 27 Feb 2025 275th albanian-laundromat 793 120 42ms 5 days ago 276th edsrzf 🇳🇿 791 76 1,165ms 1 Oct 2024 277th DialFrost 🇸🇬 791 84 2,866ms 26 Oct 2024 278th MeWhenI 🇻🇦 791 90 389ms 2 Oct 2024 279th jared-hughes 791 203 101ms 20 Dec 2024 280th saito-ta 🇯🇵 790 74 8ms 1 Oct 2024 281st pardouin 🇫🇷 789 81 135ms 29 Jan 2025 281st ovs-code 🇩🇪 789 81 145ms 17 Apr 2025 283rd Natanaelel 🇸🇪 788 48 112ms 1 Oct 2024 284th lifthrasiir 🇰🇷 788 101 20ms 21 Nov 2024 284th btjones0 788 101 18ms 2 Dec 2024 284th CornerMercury 🇬🇧 788 101 21ms 25 Sep 2025 287th MeWhenI 🇻🇦 788 109 395ms 2 Oct 2024 288th emgordon154 788 151 260ms 17 Jan 2025 289th ovs-code 🇩🇪 787 84 415ms 3 Oct 2024 289th Shanethegamer 🇺🇸 787 84 410ms 3 Oct 2024 291st KingSkyrock 🇺🇸 785 82 10ms 14 Oct 2024 292nd Shanethegamer 🇺🇸 785 88 124ms 4 Oct 2024 293rd SirBogman 🇺🇸 785 138 43ms 11 Jul 2025 294th stefangimmillaro 783 61 36ms 1 Oct 2024 295th Shanethegamer 🇺🇸 783 152 260ms 3 Oct 2024 295th targrik 783 152 267ms 7 Jul 2025 297th Shanethegamer 🇺🇸 782 91 332ms 3 Oct 2024 298th edsrzf 🇳🇿 782 119 151ms 23 Jul 2025 299th annaproxy 781 102 19ms 1 Oct 2024 300th namelessiw 780 119 326ms 9 Oct 2025 First Prev 226–300 of 811 Next Last