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 161st KasperKivimaeki 🇫🇮 845 141 294ms 9 Oct 2025 162nd error256 844 94 2ms 7 Oct 2024 163rd KasperKivimaeki 🇫🇮 844 103 396ms 8 Dec 2025 164th IanUtley 844 113 18ms 2 Oct 2024 165th sean-niemann 🇺🇸 844 114 42ms 2 Oct 2024 166th m-tkach 🇺🇦 842 144 79ms 8 Oct 2024 167th edsrzf 🇳🇿 841 111 439ms 19 Dec 2025 168th sean-niemann 🇺🇸 840 121 3ms 30 Nov 2024 169th xsot 🇸🇬 839 57 38ms 6 May 2025 170th jatloe 839 77 11ms 1 Oct 2024 171st xsot 🇸🇬 839 82 2ms 6 May 2025 172nd emplv 🇱🇻 839 142 295ms 2 Oct 2024 172nd sean-niemann 🇺🇸 839 142 302ms 2 Oct 2024 174th Shanethegamer 🇺🇸 838 67 258ms 3 Oct 2024 174th antimon2 🇯🇵 838 67 470ms 9 Oct 2024 176th edsrzf 🇳🇿 838 131 27ms 23 hours ago 177th snoozingnewt 🇨🇦 837 92 113ms 18 Dec 2025 178th JayXon 🇺🇸 837 109 1,485ms 5 Oct 2024 179th GrayJoKing 🇦🇺 836 47 4ms 1 Oct 2024 180th stefangimmillaro 836 68 1,290ms 2 Oct 2024 181st Shanethegamer 🇺🇸 836 77 9ms 1 Oct 2024 181st edsrzf 🇳🇿 836 77 10ms 10 May 2025 181st biocommando 🇫🇮 836 77 11ms 13 Jun 2025 184th sean-niemann 🇺🇸 836 81 10ms 20 Dec 2024 184th Steffan153 🇫🇮 836 81 11ms 4 hours ago 186th emplv 🇱🇻 836 145 25ms 24 Oct 2024 187th edsrzf 🇳🇿 835 115 3ms 19 Dec 2025 188th stefangimmillaro 834 80 2,338ms 12 Nov 2024 189th emgordon154 833 69 517ms 18 Nov 2024 190th edsrzf 🇳🇿 833 108 82ms 26 Jul 2025 191st stefangimmillaro 833 112 137ms 4 Oct 2024 192nd MeWhenI 🇻🇦 833 130 40ms 3 Oct 2024 193rd edsrzf 🇳🇿 833 133 154ms 19 Dec 2025 194th MeWhenI 🇻🇦 833 143 304ms 2 Oct 2024 195th ovs-code 🇩🇪 833 200 1,436ms 19 Apr 2025 196th JayXon 🇺🇸 832 155 2,650ms 3 Oct 2024 197th CLOStrophobic 🇮🇹 830 119 6ms 24 Feb 2025 198th qpwoeirut 828 78 10ms 1 Oct 2025 199th nwellnhof 🇩🇪 828 105 390ms 19 days ago 200th m-tkach 🇺🇦 825 58 42ms 8 Oct 2024 201st dcgjb 825 78 10ms 6 May 2025 202nd stefangimmillaro 825 99 109ms 3 Oct 2024 203rd retrohun 824 71 9ms 10 Jan 2025 204th ovs-code 🇩🇪 823 78 111ms 2 Oct 2024 205th primo-ppcg 🇹🇭 822 232 525ms 13 Aug 2025 206th albanian-laundromat 821 70 429ms 3 Nov 2025 207th ovs-code 🇩🇪 820 65 5ms 30 Oct 2024 208th ovs-code 🇩🇪 820 106 394ms 1 Oct 2024 208th inventshah 820 106 391ms 1 Oct 2024 210th kg583 🇺🇸 820 142 41ms 14 Feb 2025 211th sean-niemann 🇺🇸 819 48 4ms 9 Aug 2025 212th nwellnhof 🇩🇪 819 84 2ms 2 Oct 2024 212th ovs-code 🇩🇪 819 84 1ms 2 Nov 2024 212th inventshah 819 84 2ms 31 Mar 2025 215th MeWhenI 🇻🇦 819 114 470ms 7 Nov 2025 216th frosster 818 97 3ms 4 hours ago 217th MeWhenI 🇻🇦 818 183 14ms 2 Oct 2024 218th MeWhenI 🇻🇦 817 92 10ms 24 Dec 2024 219th MeWhenI 🇻🇦 817 104 1,024ms 2 Oct 2024 220th canissimia 🇦🇶 817 130 3ms 4 Oct 2024 221st rucin93 🇵🇱 816 71 138ms 17 Dec 2024 222nd sisyphus-ppcg 🇦🇺 816 83 9ms 2 Oct 2024 223rd lifthrasiir 🇰🇷 815 197 10ms 19 Dec 2024 224th MeWhenI 🇻🇦 814 85 2ms 5 Oct 2024 225th MeWhenI 🇻🇦 813 85 130ms 4 Oct 2024 226th albanian-laundromat 813 118 4ms 11 Dec 2025 227th emgordon154 813 205 1,406ms 7 Mar 2025 228th Shanethegamer 🇺🇸 812 70 1,296ms 9 Apr 2025 229th sean-niemann 🇺🇸 812 115 361ms 24 Sep 2025 229th stefangimmillaro 812 115 671ms 6 Oct 2025 231st anter69 🇭🇺 811 59 63ms 11 Oct 2024 231st Natanaelel 🇸🇪 811 59 36ms 7 Feb 2025 233rd lifthrasiir 🇰🇷 810 71 419ms 2 Dec 2024 234th saito-ta 🇯🇵 810 85 1ms 1 Oct 2024 235th stefangimmillaro 808 134 41ms 3 Oct 2024 236th stefangimmillaro 807 126 2ms 3 Oct 2024 237th GolfingSuccess 🇬🇷 806 31 74ms 5 Oct 2024 238th emgordon154 805 72 130ms 2 Oct 2024 239th trinityy-7 805 80 10ms 23 Jul 2025 240th error256 805 116 494ms 24 Sep 2025 First Prev 161–240 of 884 Next Last