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 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 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 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 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 300th kops-cg 769 84 19ms 22 Feb 2025 300th xnor-gate 769 84 19ms 23 Feb 2025 300th plcc0 769 84 16ms 6 Apr 2025 300th KatieLG 🇬🇧 769 84 16ms 25 May 2025 305th DialFrost 🇸🇬 769 90 2ms 40 hours ago 306th targrik 768 88 8ms 7 Feb 2025 307th lifthrasiir 🇰🇷 767 37 2ms 27 Nov 2024 308th didion0 🇺🇸 766 84 9ms 10 Jan 2025 309th DialFrost 🇸🇬 766 131 6ms 11 Dec 2024 310th MeWhenI 🇻🇦 765 109 331ms 2 Oct 2024 310th edsrzf 🇳🇿 765 109 377ms 23 Jul 2025 312th emplv 🇱🇻 763 76 135ms 29 Oct 2024 313th albanian-laundromat 763 118 83ms 7 days ago 314th ovs-code 🇩🇪 763 122 157ms 25 Apr 2025 315th GolfingSuccess 🇬🇷 762 70 6ms 6 Jun 2025 316th GrayJoKing 🇦🇺 761 79 1,080ms 1 Oct 2024 317th Shanethegamer 🇺🇸 761 132 8ms 2 Oct 2024 318th inventshah 760 85 19ms 4 Oct 2024 318th Artemis21 🇬🇧 760 85 10ms 10 Jan 2025 318th keelimeguy 🇺🇸 760 85 16ms 14 Jun 2025 321st MeWhenI 🇻🇦 759 89 4ms 2 Oct 2024 322nd emgordon154 758 63 40ms 18 Nov 2024 322nd SirBogman 🇺🇸 758 63 41ms 19 Jul 2025 324th weliveinhell 🇭🇹 757 85 10ms 1 Oct 2024 324th SteRoy 757 85 9ms 13 May 2025 326th AlephSquirrel 755 76 539ms 1 Oct 2024 327th sean-niemann 🇺🇸 754 93 2ms 24 Oct 2024 328th 0xjac 🇨🇭 753 158 262ms 17 Jun 2025 329th GrayJoKing 🇦🇺 751 90 4ms 1 Oct 2024 330th stackofbears 750 52 38ms 14 Mar 2025 331st DialFrost 🇸🇬 749 75 822ms 10 Oct 2024 332nd Maznek 748 86 9ms 4 Oct 2024 333rd MeWhenI 🇻🇦 748 106 2ms 2 Oct 2024 334th rak1507 🇬🇧 747 38 3ms 30 Dec 2024 335th Shanethegamer 🇺🇸 746 64 44ms 3 Oct 2024 335th Andriamanitra 🇫🇮 746 64 38ms 5 Oct 2024 337th MeWhenI 🇻🇦 746 89 3,527ms 24 Oct 2024 338th stefangimmillaro 746 94 2ms 30 Oct 2024 339th Babafaba 745 77 351ms 9 days ago 340th Shanethegamer 🇺🇸 744 121 89ms 3 Oct 2024 341st sean-niemann 🇺🇸 743 93 114ms 24 Oct 2024 342nd DialFrost 🇸🇬 742 106 11ms 13 Dec 2024 343rd MeWhenI 🇻🇦 742 162 27ms 2 Oct 2024 344th SirBogman 🇺🇸 741 63 280ms 23 Jul 2025 345th sean-niemann 🇺🇸 740 116 377ms 24 Oct 2024 346th KrausRaus 🇺🇸 739 87 10ms 1 Oct 2024 346th GeorgeStechman 🇬🇧 739 87 9ms 24 Oct 2024 346th coreynash 739 87 9ms 13 Feb 2025 346th kirjavascript 739 87 9ms 22 Jul 2025 350th Shanethegamer 🇺🇸 738 90 3,405ms 28 Oct 2024 351st HumanoidCPU 736 78 461ms 7 Mar 2025 352nd MeWhenI 🇻🇦 735 34 61ms 2 Oct 2024 352nd emgordon154 735 34 60ms 11 Sep 2025 354th stefangimmillaro 735 92 7ms 2 Oct 2024 354th Shanethegamer 🇺🇸 735 92 5ms 3 Oct 2024 356th wh3n3v3r 🇨🇿 734 88 10ms 18 Nov 2024 357th MeWhenI 🇻🇦 733 111 122ms 2 Oct 2024 358th Shanethegamer 🇺🇸 733 116 21ms 1 Oct 2024 359th Shanethegamer 🇺🇸 732 100 116ms 24 May 2025 360th Shanethegamer 🇺🇸 732 156 30ms 2 Oct 2024 361st Shanethegamer 🇺🇸 731 101 5ms 2 Oct 2024 362nd error256 731 109 10ms 24 Jul 2025 363rd stefangimmillaro 731 114 343ms 13 Oct 2024 364th anter69 🇭🇺 729 78 1,023ms 1 Oct 2024 365th CLOStrophobic 🇮🇹 728 160 43ms 27 Feb 2025 366th snoozingnewt 🇺🇸 726 79 348ms 3 mins ago 367th Shanethegamer 🇺🇸 726 112 104ms 3 Oct 2024 368th zacjl 724 110 10ms 10 Oct 2024 369th Shanethegamer 🇺🇸 724 126 1,343ms 2 Oct 2024 370th dtbao20 🇻🇳 723 89 9ms 1 Oct 2024 370th madeforlosers 723 89 9ms 17 Oct 2024 370th junkondo-jp 723 89 9ms 14 Dec 2024 373rd annaproxy 723 132 19ms 1 Oct 2024 374th MeWhenI 🇻🇦 721 179 1,554ms 12 days ago 375th weeble 720 74 8ms 1 Jul 2025 First Prev 301–375 of 816 Next Last