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 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 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 301st Waffle3z 770 103 1ms 2 Oct 2024 302nd retrohun 769 63 20ms 2 Oct 2024 303rd AlephSquirrel 769 84 18ms 1 Oct 2024 303rd kops-cg 769 84 21ms 22 Feb 2025 303rd xnor-gate 769 84 19ms 23 Feb 2025 303rd plcc0 769 84 17ms 6 Apr 2025 303rd KatieLG 🇬🇧 769 84 17ms 25 May 2025 308th DialFrost 🇸🇬 769 90 2ms 15 days ago 309th targrik 768 88 8ms 7 Feb 2025 310th lifthrasiir 🇰🇷 767 37 2ms 27 Nov 2024 311th didion0 🇺🇸 766 84 9ms 10 Jan 2025 312th DialFrost 🇸🇬 766 131 6ms 11 Dec 2024 313th MeWhenI 🇻🇦 765 109 331ms 2 Oct 2024 313th edsrzf 🇳🇿 765 109 377ms 23 Jul 2025 315th ovs-code 🇩🇪 764 122 152ms 25 Apr 2025 316th emplv 🇱🇻 763 76 135ms 29 Oct 2024 317th albanian-laundromat 763 118 77ms 21 days ago 318th GolfingSuccess 🇬🇷 762 70 6ms 6 Jun 2025 319th GrayJoKing 🇦🇺 761 79 1,080ms 1 Oct 2024 320th Shanethegamer 🇺🇸 761 132 8ms 2 Oct 2024 321st inventshah 760 85 20ms 4 Oct 2024 321st Artemis21 🇬🇧 760 85 10ms 10 Jan 2025 321st keelimeguy 🇺🇸 760 85 16ms 14 Jun 2025 324th MeWhenI 🇻🇦 759 89 5ms 2 Oct 2024 325th emgordon154 758 63 40ms 18 Nov 2024 325th SirBogman 🇺🇸 758 63 41ms 19 Jul 2025 327th weliveinhell 🇭🇹 757 85 9ms 1 Oct 2024 327th SteRoy 757 85 10ms 13 May 2025 329th AlephSquirrel 756 76 472ms 1 Oct 2024 330th sean-niemann 🇺🇸 756 93 2ms 24 Oct 2024 331st 0xjac 🇨🇭 754 158 269ms 17 Jun 2025 332nd GrayJoKing 🇦🇺 751 90 4ms 1 Oct 2024 333rd stackofbears 750 52 38ms 14 Mar 2025 334th DialFrost 🇸🇬 749 75 765ms 10 Oct 2024 335th MeWhenI 🇻🇦 749 162 27ms 2 Oct 2024 336th Maznek 748 86 10ms 4 Oct 2024 337th stefangimmillaro 748 94 2ms 30 Oct 2024 338th MeWhenI 🇻🇦 748 106 1ms 2 Oct 2024 339th rak1507 🇬🇧 747 38 3ms 30 Dec 2024 340th Babafaba 747 77 382ms 23 days ago 341st Shanethegamer 🇺🇸 746 64 44ms 3 Oct 2024 341st Andriamanitra 🇫🇮 746 64 38ms 5 Oct 2024 343rd MeWhenI 🇻🇦 746 89 2,930ms 24 Oct 2024 344th Shanethegamer 🇺🇸 744 121 83ms 3 Oct 2024 345th sean-niemann 🇺🇸 743 93 100ms 24 Oct 2024 346th SirBogman 🇺🇸 741 63 275ms 23 Jul 2025 347th KrausRaus 🇺🇸 740 87 9ms 1 Oct 2024 347th GeorgeStechman 🇬🇧 740 87 9ms 24 Oct 2024 347th coreynash 740 87 9ms 13 Feb 2025 347th kirjavascript 740 87 9ms 22 Jul 2025 351st sean-niemann 🇺🇸 740 116 374ms 24 Oct 2024 352nd Shanethegamer 🇺🇸 738 90 2,988ms 28 Oct 2024 353rd HumanoidCPU 737 78 471ms 7 Mar 2025 354th MeWhenI 🇻🇦 736 111 122ms 2 Oct 2024 355th MeWhenI 🇻🇦 735 34 61ms 2 Oct 2024 355th emgordon154 735 34 60ms 11 Sep 2025 357th stefangimmillaro 735 92 7ms 2 Oct 2024 357th Shanethegamer 🇺🇸 735 92 5ms 3 Oct 2024 359th wh3n3v3r 🇨🇿 734 88 10ms 18 Nov 2024 360th Shanethegamer 🇺🇸 733 116 21ms 1 Oct 2024 361st Shanethegamer 🇺🇸 732 100 116ms 24 May 2025 362nd Shanethegamer 🇺🇸 732 156 30ms 2 Oct 2024 363rd Shanethegamer 🇺🇸 731 101 4ms 2 Oct 2024 364th error256 731 109 8ms 24 Jul 2025 365th stefangimmillaro 731 114 333ms 13 Oct 2024 366th anter69 🇭🇺 729 78 1,023ms 1 Oct 2024 367th Shanethegamer 🇺🇸 729 112 102ms 3 Oct 2024 368th snoozingnewt 🇨🇦 728 79 384ms 14 days ago 369th CLOStrophobic 🇮🇹 728 160 41ms 27 Feb 2025 370th zacjl 724 110 6ms 10 Oct 2024 371st Shanethegamer 🇺🇸 724 126 1,278ms 2 Oct 2024 372nd dtbao20 🇻🇳 723 89 10ms 1 Oct 2024 372nd madeforlosers 723 89 8ms 17 Oct 2024 372nd junkondo-jp 723 89 9ms 14 Dec 2024 375th annaproxy 723 132 14ms 1 Oct 2024 First Prev 301–375 of 833 Next Last