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 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 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 error256 844 106 320ms 8 Oct 2024 152nd IanUtley 844 113 29ms 2 Oct 2024 153rd CLOStrophobic 🇮🇹 844 119 7ms 24 Feb 2025 154th KasperKivimaeki 🇫🇮 844 141 290ms 24 days ago 155th lynn 843 131 168ms 8 Jan 2025 156th error256 842 94 2ms 7 Oct 2024 157th sean-niemann 🇺🇸 840 121 2ms 30 Nov 2024 158th xsot 🇸🇬 838 57 43ms 6 May 2025 159th Shanethegamer 🇺🇸 838 67 290ms 3 Oct 2024 159th antimon2 🇯🇵 838 67 496ms 9 Oct 2024 161st jatloe 838 77 11ms 1 Oct 2024 162nd emplv 🇱🇻 838 142 279ms 2 Oct 2024 162nd sean-niemann 🇺🇸 838 142 291ms 2 Oct 2024 164th JayXon 🇺🇸 837 109 1,354ms 5 Oct 2024 165th stefangimmillaro 836 68 1,045ms 2 Oct 2024 166th GrayJoKing 🇦🇺 835 47 4ms 1 Oct 2024 167th Shanethegamer 🇺🇸 835 77 12ms 1 Oct 2024 167th edsrzf 🇳🇿 835 77 9ms 10 May 2025 167th biocommando 🇫🇮 835 77 10ms 13 Jun 2025 170th nwellnhof 🇩🇪 835 84 2ms 2 Oct 2024 170th ovs-code 🇩🇪 835 84 2ms 2 Nov 2024 170th inventshah 835 84 2ms 31 Mar 2025 173rd sean-niemann 🇺🇸 835 114 44ms 2 Oct 2024 174th m-tkach 🇺🇦 835 144 84ms 8 Oct 2024 175th sean-niemann 🇺🇸 834 81 9ms 20 Dec 2024 176th MeWhenI 🇻🇦 833 130 61ms 3 Oct 2024 177th ovs-code 🇩🇪 833 200 824ms 19 Apr 2025 178th emgordon154 832 69 391ms 18 Nov 2024 179th MeWhenI 🇻🇦 832 143 275ms 2 Oct 2024 180th stefangimmillaro 831 112 145ms 4 Oct 2024 181st stefangimmillaro 830 80 2,185ms 12 Nov 2024 182nd edsrzf 🇳🇿 829 108 288ms 26 Jul 2025 183rd emplv 🇱🇻 829 145 41ms 24 Oct 2024 184th qpwoeirut 828 78 11ms 1 Oct 2025 185th m-tkach 🇺🇦 827 138 29ms 3 Oct 2024 186th dcgjb 825 78 9ms 6 May 2025 187th saito-ta 🇯🇵 825 85 2ms 1 Oct 2024 188th retrohun 824 71 9ms 10 Jan 2025 189th MeWhenI 🇻🇦 824 85 2ms 5 Oct 2024 190th m-tkach 🇺🇦 823 58 37ms 8 Oct 2024 191st Kacarott 🇦🇺 823 73 1,161ms 1 Oct 2024 191st chunes3 🇺🇸 823 73 1,046ms 2 Oct 2024 193rd ovs-code 🇩🇪 823 78 97ms 2 Oct 2024 194th JayXon 🇺🇸 823 155 3 Oct 2024 195th stefangimmillaro 822 99 132ms 3 Oct 2024 196th primo-ppcg 🇹🇭 822 232 532ms 13 Aug 2025 197th edsrzf 🇳🇿 821 118 4ms 27 Jul 2025 198th ovs-code 🇩🇪 820 65 6ms 30 Oct 2024 199th albanian-laundromat 820 70 532ms 2 hours ago 200th kg583 🇺🇸 820 142 41ms 14 Feb 2025 201st sean-niemann 🇺🇸 818 48 5ms 9 Aug 2025 202nd MeWhenI 🇻🇦 817 104 19ms 2 Oct 2024 203rd canissimia 🇦🇶 817 130 4ms 4 Oct 2024 204th rucin93 🇵🇱 816 71 167ms 17 Dec 2024 205th lifthrasiir 🇰🇷 815 197 10ms 19 Dec 2024 206th sisyphus-ppcg 🇦🇺 814 83 8ms 2 Oct 2024 207th MeWhenI 🇻🇦 813 85 104ms 4 Oct 2024 208th emgordon154 813 205 853ms 7 Mar 2025 209th Shanethegamer 🇺🇸 812 70 986ms 9 Apr 2025 210th ovs-code 🇩🇪 810 106 401ms 1 Oct 2024 210th inventshah 810 106 433ms 1 Oct 2024 212th kg583 🇺🇸 810 124 7ms 20 Oct 2024 212th AlephSquirrel 810 124 7ms 21 Oct 2024 214th anter69 🇭🇺 809 59 69ms 11 Oct 2024 214th Natanaelel 🇸🇪 809 59 36ms 7 Feb 2025 216th lifthrasiir 🇰🇷 808 71 340ms 2 Dec 2024 217th stefangimmillaro 808 134 56ms 3 Oct 2024 218th sean-niemann 🇺🇸 807 115 377ms 24 Sep 2025 218th stefangimmillaro 807 115 355ms 6 Oct 2025 220th stefangimmillaro 807 126 2ms 3 Oct 2024 221st GolfingSuccess 🇬🇷 806 31 69ms 5 Oct 2024 222nd emgordon154 805 72 158ms 2 Oct 2024 223rd trinityy-7 804 80 10ms 23 Jul 2025 224th MeWhenI 🇻🇦 804 183 18ms 2 Oct 2024 225th GrayJoKing 🇦🇺 803 58 7ms 24 Oct 2024 First Prev 151–225 of 804 Next Last