Card Number Validation in all languages in chars. 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 Chars Time Submitted 151st duckyluuk 🇳🇱 844 68 447ms 4 Oct 2024 152nd error256 844 106 320ms 8 Oct 2024 153rd IanUtley 844 113 29ms 2 Oct 2024 154th CLOStrophobic 🇮🇹 844 119 7ms 24 Feb 2025 155th KasperKivimaeki 🇫🇮 844 141 259ms 9 Oct 2025 156th lynn 843 131 168ms 8 Jan 2025 157th error256 842 94 2ms 7 Oct 2024 158th sean-niemann 🇺🇸 840 121 2ms 30 Nov 2024 159th xsot 🇸🇬 838 57 43ms 6 May 2025 160th Shanethegamer 🇺🇸 838 67 290ms 3 Oct 2024 160th antimon2 🇯🇵 838 67 496ms 9 Oct 2024 162nd jatloe 838 77 11ms 1 Oct 2024 163rd emplv 🇱🇻 838 142 261ms 2 Oct 2024 163rd sean-niemann 🇺🇸 838 142 252ms 2 Oct 2024 165th JayXon 🇺🇸 837 109 1,354ms 5 Oct 2024 166th stefangimmillaro 836 68 1,045ms 2 Oct 2024 167th GrayJoKing 🇦🇺 835 47 4ms 1 Oct 2024 168th Shanethegamer 🇺🇸 835 77 10ms 1 Oct 2024 168th edsrzf 🇳🇿 835 77 9ms 10 May 2025 168th biocommando 🇫🇮 835 77 9ms 13 Jun 2025 171st nwellnhof 🇩🇪 835 84 2ms 2 Oct 2024 171st ovs-code 🇩🇪 835 84 2ms 2 Nov 2024 171st inventshah 835 84 2ms 31 Mar 2025 174th sean-niemann 🇺🇸 835 114 44ms 2 Oct 2024 175th m-tkach 🇺🇦 835 144 84ms 8 Oct 2024 176th sean-niemann 🇺🇸 834 81 9ms 20 Dec 2024 177th MeWhenI 🇻🇦 833 130 61ms 3 Oct 2024 178th ovs-code 🇩🇪 833 200 824ms 19 Apr 2025 179th emgordon154 832 69 391ms 18 Nov 2024 180th MeWhenI 🇻🇦 832 143 261ms 2 Oct 2024 181st JayXon 🇺🇸 832 155 3 Oct 2024 182nd stefangimmillaro 831 112 145ms 4 Oct 2024 183rd stefangimmillaro 830 80 2,185ms 12 Nov 2024 184th edsrzf 🇳🇿 829 108 288ms 26 Jul 2025 185th emplv 🇱🇻 829 145 41ms 24 Oct 2024 186th qpwoeirut 828 78 11ms 1 Oct 2025 187th m-tkach 🇺🇦 827 138 29ms 3 Oct 2024 188th saito-ta 🇯🇵 826 85 2ms 1 Oct 2024 189th dcgjb 825 78 10ms 6 May 2025 190th retrohun 824 71 9ms 10 Jan 2025 191st MeWhenI 🇻🇦 824 85 2ms 5 Oct 2024 192nd m-tkach 🇺🇦 823 58 37ms 8 Oct 2024 193rd Kacarott 🇦🇺 823 73 1,161ms 1 Oct 2024 193rd chunes3 🇺🇸 823 73 1,046ms 2 Oct 2024 195th ovs-code 🇩🇪 823 78 97ms 2 Oct 2024 196th stefangimmillaro 822 99 109ms 3 Oct 2024 197th primo-ppcg 🇹🇭 822 232 506ms 13 Aug 2025 198th edsrzf 🇳🇿 821 118 4ms 27 Jul 2025 199th ovs-code 🇩🇪 820 65 6ms 30 Oct 2024 200th albanian-laundromat 820 70 354ms 7 days ago 201st kg583 🇺🇸 820 142 41ms 14 Feb 2025 202nd sean-niemann 🇺🇸 818 48 5ms 9 Aug 2025 203rd MeWhenI 🇻🇦 817 104 19ms 2 Oct 2024 204th canissimia 🇦🇶 817 130 4ms 4 Oct 2024 205th rucin93 🇵🇱 816 71 128ms 17 Dec 2024 206th JohandeRuiter 🇳🇱 816 86 1ms 17 Jan 2025 207th MeWhenI 🇻🇦 815 114 342ms 3 days ago 208th lifthrasiir 🇰🇷 815 197 10ms 19 Dec 2024 209th sisyphus-ppcg 🇦🇺 814 83 8ms 2 Oct 2024 210th MeWhenI 🇻🇦 813 85 104ms 4 Oct 2024 211th emgordon154 813 205 799ms 7 Mar 2025 212th Shanethegamer 🇺🇸 812 70 986ms 9 Apr 2025 213th ovs-code 🇩🇪 810 106 378ms 1 Oct 2024 213th inventshah 810 106 361ms 1 Oct 2024 215th kg583 🇺🇸 810 124 7ms 20 Oct 2024 215th AlephSquirrel 810 124 7ms 21 Oct 2024 217th anter69 🇭🇺 809 59 69ms 11 Oct 2024 217th Natanaelel 🇸🇪 809 59 36ms 7 Feb 2025 219th lifthrasiir 🇰🇷 808 71 340ms 2 Dec 2024 220th stefangimmillaro 808 134 56ms 3 Oct 2024 221st sean-niemann 🇺🇸 807 115 335ms 24 Sep 2025 221st stefangimmillaro 807 115 329ms 6 Oct 2025 223rd stefangimmillaro 807 126 2ms 3 Oct 2024 224th GolfingSuccess 🇬🇷 806 31 69ms 5 Oct 2024 225th emgordon154 805 72 118ms 2 Oct 2024 First Prev 151–225 of 810 Next Last