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 Numbrix 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 Numbrix 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 601st gpikmddk 548 130 367ms 30 Oct 2025 602nd elgan65536 547 118 10ms 2 Oct 2024 602nd logvp 547 118 15ms 6 Oct 2024 602nd ahmetdemirag 🇨🇾 547 118 9ms 6 Feb 2025 602nd dirckvdende 547 118 19ms 10 Jul 2025 606th zakariamouhid 545 118 9ms 1 Oct 2024 606th JOrE20 🇺🇸 545 118 9ms 9 days ago 608th xyangst 545 171 181ms 1 Oct 2024 608th kmathis22 545 171 430ms 21 days ago 610th najs91 544 131 343ms 15 Oct 2024 610th bac0id 544 131 370ms 9 Jan 2025 610th CaedenHarper 🇨🇦 544 131 336ms 17 Oct 2025 613th jtaxen 543 119 15ms 21 Oct 2024 613th psbpsbp 543 119 9ms 19 Dec 2024 613th klixel 🇨🇦 543 119 9ms 9 Apr 2025 613th vhoulbreque 🇫🇷 543 119 9ms 19 days ago 617th eranws 541 119 9ms 23 Dec 2024 618th Sciman101 539 147 2ms 26 Mar 2025 619th TaserTheFox 🇺🇸 538 120 16ms 8 Oct 2024 619th yokasuretsu 538 120 10ms 26 Jan 2025 619th Troon 538 120 10ms 17 Feb 2025 622nd mousetail 🇳🇱 536 128 2ms 3 Oct 2024 623rd BREMAUCY 🇫🇷 534 121 16ms 18 Jul 2025 624th msbranicky 533 175 422ms 13 Dec 2024 625th deancureton 532 121 9ms 30 Dec 2024 626th chartung17 529 122 10ms 24 Mar 2025 627th msbranicky 527 126 2,981ms 9 Jan 2025 628th blaztoma 🇱🇹 526 154 103ms 12 days ago 629th msbranicky 525 123 17ms 3 Oct 2024 629th bobbysq 525 123 10ms 5 Oct 2024 629th wuzekai518 525 123 10ms 8 Oct 2024 632nd Macweese 524 178 382ms 3 Aug 2025 633rd galloj 🇨🇿 522 112 19ms 4 Oct 2024 634th NotEvenIndian 521 124 10ms 22 Oct 2024 634th ridingqwerty 🇺🇸 521 124 16ms 16 Jan 2025 634th CommandLeo 🇮🇹 521 124 9ms 5 Oct 2025 637th snoozingnewt 🇨🇦 519 213 138ms 2 Nov 2025 638th bac0id 518 180 370ms 9 Jan 2025 639th bnic24 517 125 16ms 3 Oct 2024 639th adoxography 517 125 11ms 22 Oct 2024 639th lelbal 517 125 9ms 14 Oct 2025 642nd sidok 515 109 247ms 13 Nov 2024 643rd dokutan 514 143 128ms 19 Oct 2024 644th emgordon154 511 156 9ms 13 Dec 2024 645th nephila-nacrea 🇬🇧 510 77 3ms 2 Oct 2024 646th yoshykai 510 183 364ms 12 Apr 2025 647th CatsAreFluffy 509 127 15ms 30 Oct 2024 647th WillowWispy 509 127 10ms 25 May 2025 649th KatieLG 🇬🇧 509 140 344ms 1 Oct 2024 650th KatieLG 🇬🇧 509 146 9ms 2 Oct 2024 651st Chinay-Domitrix 🇺🇸 507 131 3,327ms 30 Mar 2025 652nd madex 🇩🇪 501 129 16ms 2 Oct 2024 652nd RedzGoose 🇦🇺 501 129 13ms 15 Oct 2024 652nd calebaitken 501 129 9ms 11 Apr 2025 652nd rollershutter 501 129 17ms 20 days ago 656th msbranicky 501 138 3ms 3 Oct 2024 657th snoozingnewt 🇨🇦 501 142 364ms 2 Nov 2025 658th MeWhenI 🇻🇦 499 149 55ms 4 Oct 2024 659th janAkali 🇷🇺 499 167 357ms 8 Oct 2024 660th Europe2048 497 130 9ms 2 Oct 2024 660th nstearns96 🇬🇧 497 130 16ms 2 Oct 2024 660th Stockoh 🇫🇷 497 130 16ms 4 Jul 2025 663rd inverseLorentz 🇦🇺 493 131 9ms 7 Oct 2024 663rd sciencejiho 493 131 16ms 11 Feb 2025 663rd Jaydosu 493 131 9ms 11 Apr 2025 663rd Emutis 🇱🇹 493 131 9ms 11 Nov 2025 667th CarterStroik 493 161 2ms 21 days ago 668th TheRealOhead 🇺🇸 491 131 9ms 1 Oct 2024 669th HumanoidCPU 491 145 388ms 5 Oct 2024 670th snoozingnewt 🇨🇦 490 150 129ms 2 Nov 2025 671st snoozingnewt 🇨🇦 487 249 26ms 2 Nov 2025 672nd snoozingnewt 🇨🇦 486 117 904ms 2 Nov 2025 673rd Mabeloid 🇳🇴 486 133 9ms 2 Oct 2024 674th jlangvand 486 141 2ms 15 Oct 2024 674th HumanoidCPU 486 141 1ms 7 Mar 2025 First Prev 601–675 of 841 Next Last