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 error256 849 106 85ms 8 Oct 2024 162nd emgordon154 848 67 1,283ms 18 Nov 2024 163rd duckyluuk 🇳🇱 846 68 357ms 4 Oct 2024 164th primo-ppcg 🇹🇭 846 128 41ms 27 Apr 2025 165th lynn 846 131 138ms 8 Jan 2025 166th KasperKivimaeki 🇫🇮 845 141 294ms 9 Oct 2025 167th error256 844 94 2ms 7 Oct 2024 168th KasperKivimaeki 🇫🇮 844 103 396ms 8 Dec 2025 169th IanUtley 844 113 20ms 2 Oct 2024 170th sean-niemann 🇺🇸 844 114 41ms 2 Oct 2024 171st m-tkach 🇺🇦 842 144 79ms 8 Oct 2024 172nd kg583 🇺🇸 840 86 4ms 19 hours ago 173rd sean-niemann 🇺🇸 840 121 2ms 30 Nov 2024 174th xsot 🇸🇬 839 57 38ms 6 May 2025 175th jatloe 839 77 11ms 1 Oct 2024 176th xsot 🇸🇬 839 82 2ms 6 May 2025 177th emplv 🇱🇻 839 142 295ms 2 Oct 2024 177th sean-niemann 🇺🇸 839 142 302ms 2 Oct 2024 179th GrayJoKing 🇦🇺 838 47 4ms 1 Oct 2024 179th Steffan153 🇫🇮 838 47 5ms 4 days ago 181st Shanethegamer 🇺🇸 838 67 258ms 3 Oct 2024 181st antimon2 🇯🇵 838 67 469ms 9 Oct 2024 183rd edsrzf 🇳🇿 838 131 28ms 10 days ago 184th snoozingnewt 🇨🇦 837 92 106ms 18 Dec 2025 185th JayXon 🇺🇸 837 109 1,368ms 5 Oct 2024 186th stefangimmillaro 836 68 1,290ms 2 Oct 2024 187th Shanethegamer 🇺🇸 836 77 11ms 1 Oct 2024 187th biocommando 🇫🇮 836 77 11ms 13 Jun 2025 189th sean-niemann 🇺🇸 836 81 10ms 20 Dec 2024 189th Steffan153 🇫🇮 836 81 12ms 9 days ago 191st emplv 🇱🇻 836 145 25ms 24 Oct 2024 192nd edsrzf 🇳🇿 835 115 3ms 19 Dec 2025 193rd emgordon154 834 69 467ms 18 Nov 2024 194th stefangimmillaro 834 80 2,338ms 12 Nov 2024 195th edsrzf 🇳🇿 833 108 82ms 26 Jul 2025 196th stefangimmillaro 833 112 140ms 4 Oct 2024 197th MeWhenI 🇻🇦 833 130 40ms 3 Oct 2024 198th edsrzf 🇳🇿 833 133 154ms 19 Dec 2025 199th MeWhenI 🇻🇦 833 143 304ms 2 Oct 2024 200th ovs-code 🇩🇪 833 200 1,401ms 19 Apr 2025 201st edsrzf 🇳🇿 832 137 44ms 16 Aug 2025 202nd JayXon 🇺🇸 832 155 1,904ms 3 Oct 2024 203rd qpwoeirut 828 78 10ms 1 Oct 2025 203rd Flekay 🇩🇪 828 78 17ms 5 days ago 205th nwellnhof 🇩🇪 828 105 390ms 22 Jan 2026 206th m-tkach 🇺🇦 825 58 39ms 8 Oct 2024 207th dcgjb 825 78 11ms 6 May 2025 208th stefangimmillaro 825 99 109ms 3 Oct 2024 209th retrohun 824 71 9ms 10 Jan 2025 210th ovs-code 🇩🇪 823 78 111ms 2 Oct 2024 211th albanian-laundromat 822 70 375ms 3 Nov 2025 212th primo-ppcg 🇹🇭 822 232 525ms 13 Aug 2025 213th sean-niemann 🇺🇸 820 48 4ms 9 Aug 2025 214th ovs-code 🇩🇪 820 65 5ms 30 Oct 2024 215th ovs-code 🇩🇪 820 106 394ms 1 Oct 2024 215th inventshah 820 106 391ms 1 Oct 2024 217th nwellnhof 🇩🇪 819 84 2ms 2 Oct 2024 217th ovs-code 🇩🇪 819 84 1ms 2 Nov 2024 217th inventshah 819 84 2ms 31 Mar 2025 220th MeWhenI 🇻🇦 819 114 470ms 7 Nov 2025 221st frosster 🇨🇦 818 97 2ms 9 days ago 222nd MeWhenI 🇻🇦 818 183 14ms 2 Oct 2024 223rd MeWhenI 🇻🇦 817 92 10ms 24 Dec 2024 224th MeWhenI 🇻🇦 817 104 1,025ms 2 Oct 2024 225th canissimia 🇦🇶 817 130 3ms 4 Oct 2024 226th rucin93 🇵🇱 816 71 138ms 17 Dec 2024 227th sisyphus-ppcg 🇦🇺 816 83 10ms 2 Oct 2024 228th MeWhenI 🇻🇦 816 85 2ms 5 Oct 2024 229th CLOStrophobic 🇮🇹 815 119 6ms 24 Feb 2025 230th lifthrasiir 🇰🇷 815 197 9ms 19 Dec 2024 231st MeWhenI 🇻🇦 813 85 127ms 4 Oct 2024 232nd albanian-laundromat 813 118 4ms 11 Dec 2025 233rd emgordon154 813 205 1,404ms 7 Mar 2025 234th Shanethegamer 🇺🇸 812 70 1,296ms 9 Apr 2025 235th sean-niemann 🇺🇸 812 115 361ms 24 Sep 2025 235th stefangimmillaro 812 115 671ms 6 Oct 2025 237th anter69 🇭🇺 811 59 63ms 11 Oct 2024 237th Natanaelel 🇸🇪 811 59 35ms 7 Feb 2025 239th lifthrasiir 🇰🇷 810 71 419ms 2 Dec 2024 240th saito-ta 🇯🇵 810 85 1ms 1 Oct 2024 First Prev 161–240 of 889 Next Last