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 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 Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers 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 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 Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 451st GolfingSuccess 🇬🇷 659 98 23ms 5 Oct 2024 451st firegene 🇮🇪 659 98 17ms 21 Oct 2024 451st JunkIce 659 98 11ms 3 Dec 2024 454th emgordon154 659 111 5ms 12 Jan 2025 455th DialFrost 🇸🇬 658 67 2ms 22 Dec 2024 456th BambooleanLogic 🇸🇪 656 98 10ms 21 Oct 2024 457th error256 654 142 172ms 31 May 2025 458th MeWhenI 🇻🇦 653 142 368ms 2 Oct 2024 459th MeWhenI 🇻🇦 652 88 553ms 2 Oct 2024 460th SirBogman 🇺🇸 652 99 18ms 8 Oct 2024 461st voytxt 🇨🇿 651 89 143ms 17 Apr 2025 461st dokutan 651 89 137ms 28 Jun 2025 463rd dokutan 650 99 9ms 28 Jun 2025 464th w911 649 183 275ms 7 Oct 2024 465th jwhear 🇺🇸 647 197 1,861ms 1 Oct 2024 466th MeWhenI 🇻🇦 645 91 903ms 29 Aug 2025 467th FlorianCassayre 🇫🇷 645 100 19ms 1 Oct 2024 467th bzijlema 🇳🇱 645 100 20ms 10 Oct 2024 467th bricknellj 645 100 17ms 4 Mar 2025 470th rucin93 🇵🇱 645 144 187ms 28 Oct 2024 471st CaedenHarper 🇨🇦 643 100 9ms 22 Aug 2025 471st iczelia 🇩🇪 643 100 10ms 12 days ago 473rd Shanethegamer 🇺🇸 643 124 7ms 4 Oct 2024 474th koipondx86 642 123 2ms 8 Nov 2024 475th CaedenHarper 🇨🇦 642 185 289ms 3 Jan 2025 476th tomh1012 640 111 395ms 8 Sep 2025 477th stefangimmillaro 639 73 277ms 1 Oct 2024 478th btjones0 639 101 18ms 2 Dec 2024 479th Apataras 639 145 395ms 25 Jun 2025 480th MeWhenI 🇻🇦 638 73 8ms 3 Oct 2024 481st Yax42 🇫🇷 637 101 9ms 5 Sep 2025 482nd Jonatan6 🇩🇰 637 110 2ms 24 Oct 2024 483rd elgan65536 636 146 186ms 2 Oct 2024 484th annaproxy 633 102 19ms 1 Oct 2024 484th xyangst 633 102 10ms 1 Oct 2024 486th Shanethegamer 🇺🇸 631 74 223ms 16 Oct 2024 487th msbranicky 631 188 276ms 7 Jan 2025 488th dokutan 630 91 382ms 19 Oct 2024 489th mossiegoat 627 103 11ms 21 Aug 2025 490th DialFrost 🇸🇬 627 304 159ms 13 Aug 2025 491st AlephSquirrel 625 40 48ms 1 Oct 2024 492nd dokutan 622 127 2ms 10 Dec 2024 493rd not-a-pokemon 620 113 2ms 23 Jul 2025 494th BalaM314 618 104 10ms 4 Feb 2025 494th acollett89 618 104 9ms 15 Jul 2025 496th codereport 🇨🇦 617 63 34ms 2 Oct 2024 497th SirBogman 🇺🇸 617 93 521ms 23 Jul 2025 498th MarcMush 🇫🇷 615 91 746ms 8 Oct 2024 499th fourth-bit 615 105 17ms 1 Oct 2024 499th jared-hughes 615 105 17ms 3 Oct 2024 499th mattyhempstead 615 105 29ms 7 Oct 2024 502nd jupj 🇫🇮 615 114 2ms 20 Jul 2025 503rd Ripick 615 135 390ms 23 Mar 2025 504th olleicua 🇺🇸 612 78 36ms 18 Oct 2024 505th davecame 609 106 17ms 1 Oct 2024 505th starfihs 609 106 10ms 2 Oct 2024 505th rschwa6308 🇺🇸 609 106 18ms 28 Oct 2024 505th snydej 609 106 18ms 21 Nov 2024 505th andrewjc2000 609 106 16ms 17 Jul 2025 505th travisdoesmath 609 106 17ms 7 Sep 2025 511th bac0id 609 141 433ms 10 Jan 2025 512th daveberlin 607 106 10ms 27 Jun 2025 513th Seanharrs 607 117 405ms 15 Nov 2024 514th evnu 605 147 345ms 11 days ago 515th kaascevich 604 134 155ms 9 Jul 2025 516th MeWhenI 🇻🇦 603 73 2ms 2 Oct 2024 517th commandblockguy 🇺🇸 603 107 20ms 7 Oct 2024 517th zbreit 🇺🇸 603 107 20ms 29 Oct 2024 517th StardustGogeta 603 107 16ms 30 Oct 2024 517th ZakkkkAttackkkk 🇵🇭 603 107 18ms 8 Feb 2025 517th InigoK 🇺🇸 603 107 17ms 22 Sep 2025 522nd Shanethegamer 🇺🇸 603 154 175ms 3 Oct 2024 523rd alemelis 602 93 485ms 1 Oct 2024 524th roguh 🇬🇹 599 117 2ms 13 Oct 2024 524th iczelia 🇩🇪 599 117 3ms 25 Sep 2025 First Prev 451–525 of 780 Next Last