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 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 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 Calendar 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 Multitap Input NFA Simulator 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 Arturo Befunge BQN CJam CoffeeScript Egel 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 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 Arturo Befunge BQN CJam CoffeeScript Egel 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 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 Calendar 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 Multitap Input NFA Simulator 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 151st duckyluuk 🇳🇱 845 68 492ms 4 Oct 2024 152nd KasperKivimaeki 🇫🇮 845 141 265ms 9 Oct 2025 153rd error256 844 94 2ms 7 Oct 2024 154th IanUtley 844 113 18ms 2 Oct 2024 155th CLOStrophobic 🇮🇹 844 119 7ms 24 Feb 2025 156th lynn 843 131 168ms 8 Jan 2025 157th m-tkach 🇺🇦 842 144 84ms 8 Oct 2024 158th sean-niemann 🇺🇸 840 121 2ms 30 Nov 2024 159th jatloe 839 77 10ms 1 Oct 2024 160th emplv 🇱🇻 839 142 257ms 2 Oct 2024 160th sean-niemann 🇺🇸 839 142 258ms 2 Oct 2024 162nd xsot 🇸🇬 838 57 43ms 6 May 2025 163rd Shanethegamer 🇺🇸 838 67 259ms 3 Oct 2024 163rd antimon2 🇯🇵 838 67 443ms 9 Oct 2024 165th JayXon 🇺🇸 837 109 1,288ms 5 Oct 2024 166th stefangimmillaro 836 68 1,045ms 2 Oct 2024 167th Shanethegamer 🇺🇸 836 77 10ms 1 Oct 2024 167th edsrzf 🇳🇿 836 77 10ms 10 May 2025 167th biocommando 🇫🇮 836 77 10ms 13 Jun 2025 170th xsot 🇸🇬 836 82 2ms 6 May 2025 171st emplv 🇱🇻 836 145 41ms 24 Oct 2024 172nd GrayJoKing 🇦🇺 835 47 4ms 1 Oct 2024 173rd sean-niemann 🇺🇸 835 114 44ms 2 Oct 2024 174th sean-niemann 🇺🇸 834 81 9ms 20 Dec 2024 175th emgordon154 833 69 544ms 18 Nov 2024 176th edsrzf 🇳🇿 833 108 77ms 26 Jul 2025 177th stefangimmillaro 833 112 144ms 4 Oct 2024 178th MeWhenI 🇻🇦 833 130 61ms 3 Oct 2024 179th MeWhenI 🇻🇦 833 143 256ms 2 Oct 2024 180th ovs-code 🇩🇪 833 200 392ms 19 Apr 2025 181st edsrzf 🇳🇿 832 96 97ms 7 days ago 182nd JayXon 🇺🇸 832 155 1,692ms 3 Oct 2024 183rd stefangimmillaro 830 80 2,185ms 12 Nov 2024 184th qpwoeirut 828 78 10ms 1 Oct 2025 185th m-tkach 🇺🇦 827 138 29ms 3 Oct 2024 186th dcgjb 825 78 9ms 6 May 2025 187th stefangimmillaro 825 99 109ms 3 Oct 2024 188th retrohun 824 71 9ms 10 Jan 2025 189th m-tkach 🇺🇦 823 58 37ms 8 Oct 2024 190th Kacarott 🇦🇺 823 73 986ms 1 Oct 2024 190th chunes3 🇺🇸 823 73 1,046ms 2 Oct 2024 192nd ovs-code 🇩🇪 823 78 97ms 2 Oct 2024 193rd primo-ppcg 🇹🇭 822 232 506ms 13 Aug 2025 194th albanian-laundromat 821 70 408ms 3 Nov 2025 195th edsrzf 🇳🇿 821 118 4ms 27 Jul 2025 196th ovs-code 🇩🇪 820 65 6ms 30 Oct 2024 197th kg583 🇺🇸 820 142 41ms 14 Feb 2025 198th sean-niemann 🇺🇸 818 48 5ms 9 Aug 2025 199th MeWhenI 🇻🇦 818 114 342ms 7 Nov 2025 200th MeWhenI 🇻🇦 818 183 15ms 2 Oct 2024 201st MeWhenI 🇻🇦 817 92 10ms 24 Dec 2024 202nd MeWhenI 🇻🇦 817 104 19ms 2 Oct 2024 203rd canissimia 🇦🇶 817 130 4ms 4 Oct 2024 204th rucin93 🇵🇱 816 71 128ms 17 Dec 2024 205th nwellnhof 🇩🇪 816 84 2ms 2 Oct 2024 205th ovs-code 🇩🇪 816 84 2ms 2 Nov 2024 205th inventshah 816 84 2ms 31 Mar 2025 208th lifthrasiir 🇰🇷 815 197 10ms 19 Dec 2024 209th sisyphus-ppcg 🇦🇺 814 83 9ms 2 Oct 2024 210th MeWhenI 🇻🇦 814 85 2ms 5 Oct 2024 211th MeWhenI 🇻🇦 813 85 94ms 4 Oct 2024 212th emgordon154 813 205 499ms 7 Mar 2025 213th Shanethegamer 🇺🇸 812 70 986ms 9 Apr 2025 214th sean-niemann 🇺🇸 811 115 335ms 24 Sep 2025 214th stefangimmillaro 811 115 329ms 6 Oct 2025 216th lifthrasiir 🇰🇷 810 71 379ms 2 Dec 2024 217th ovs-code 🇩🇪 810 106 380ms 1 Oct 2024 217th inventshah 810 106 376ms 1 Oct 2024 219th kg583 🇺🇸 810 124 7ms 20 Oct 2024 219th AlephSquirrel 810 124 7ms 21 Oct 2024 221st anter69 🇭🇺 809 59 69ms 11 Oct 2024 221st Natanaelel 🇸🇪 809 59 36ms 7 Feb 2025 223rd stefangimmillaro 808 134 56ms 3 Oct 2024 224th saito-ta 🇯🇵 807 85 2ms 1 Oct 2024 225th stefangimmillaro 807 126 2ms 3 Oct 2024 First Prev 151–225 of 835 Next Last