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 Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Multitap Input 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 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Dragon Curve Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript 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 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> ALGOL 68 ArkScript 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 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily 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 Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Multitap Input 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 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Dragon Curve Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 640th WillConker 577 112 11ms 22 Oct 2024 640th maxgodfrey2004 🇨🇦 577 112 10ms 4 Jan 2025 643rd KatieLG 🇬🇧 576 99 1,400ms 1 Oct 2024 644th 823126 576 112 10ms 13 Nov 2024 644th snoozingnewt 🇨🇦 576 112 11ms 2 Nov 2025 646th MeWhenI 🇻🇦 572 164 196ms 6 Oct 2024 647th janAkali 🇷🇺 571 147 445ms 10 Mar 2026 648th Mabeloid 🇳🇴 570 121 1ms 21 Oct 2025 649th jusaka 565 102 465ms 9 days ago 650th denkyuu1 564 100 354ms 5 days ago 651st aliakseikalosha 563 127 488ms 10 Oct 2024 652nd jipsong 🇩🇪 562 115 18ms 12 May 2025 653rd jgbaldwinbrown 561 123 2ms 14 Jan 2026 654th dokutan 561 155 446ms 10 Feb 2026 655th ravnskjaer 🇩🇰 560 167 506ms 15 Dec 2025 656th rowechenzhong 558 116 17ms 17 Oct 2024 657th CaedenHarper 🇨🇦 556 104 1,059ms 24 Nov 2025 658th madex 🇩🇪 556 116 16ms 1 Oct 2024 659th edsrzf 🇳🇿 554 135 6ms 27 Feb 2025 660th snoozingnewt 🇨🇦 554 148 132ms 20 Nov 2025 661st msbranicky 554 185 4ms 20 Jan 2025 662nd FortuiteMan 🇫🇷 554 270 44ms 22 Nov 2025 663rd MeWhenI 🇻🇦 554 290 8ms 2 Oct 2024 664th dtbao20 🇻🇳 553 117 19ms 1 Oct 2024 664th Pyroan 553 117 18ms 22 Feb 2025 664th vgamula 🇺🇦 553 117 17ms 5 Aug 2025 664th FortuiteMan 🇫🇷 553 117 18ms 1 Dec 2025 664th yujqiao 553 117 25ms 16 Dec 2025 669th gpikmddk 550 130 599ms 30 Oct 2025 670th ethanlally 550 170 439ms 19 Nov 2025 670th snoozingnewt 🇨🇦 550 170 488ms 5 Dec 2025 672nd JDiLenarda 🇫🇷 549 165 1,630ms 1 Oct 2024 673rd xyangst 549 171 179ms 1 Oct 2024 674th KatieLG 🇬🇧 548 105 635ms 11 Feb 2026 675th elgan65536 🇺🇸 548 118 11ms 2 Oct 2024 675th logvp 548 118 18ms 6 Oct 2024 675th ahmetdemirag 🇨🇾 548 118 10ms 6 Feb 2025 675th dirckvdende 548 118 17ms 10 Jul 2025 679th zakariamouhid 547 118 12ms 1 Oct 2024 680th kmathis22 547 171 509ms 19 Nov 2025 681st najs91 546 131 401ms 15 Oct 2024 681st bac0id 546 131 444ms 9 Jan 2025 681st CaedenHarper 🇨🇦 546 131 409ms 17 Oct 2025 684th jtaxen 543 119 18ms 21 Oct 2024 684th psbpsbp 543 119 9ms 19 Dec 2024 684th klixel 🇨🇦 543 119 10ms 9 Apr 2025 684th vhoulbreque 🇫🇷 543 119 16ms 21 Nov 2025 688th eranws 542 119 11ms 23 Dec 2024 689th Sciman101 540 147 2ms 26 Mar 2025 690th TaserTheFox 🇺🇸 539 120 18ms 8 Oct 2024 690th yokasuretsu 539 120 11ms 26 Jan 2025 690th Troon 539 120 10ms 17 Feb 2025 693rd mousetail 🇳🇱 539 128 2ms 3 Oct 2024 694th msbranicky 536 175 161ms 13 Dec 2024 695th JRaspass 🇬🇧 534 74 3ms 24 Mar 2026 696th BREMAUCY 🇫🇷 534 121 17ms 18 Jul 2025 696th retrohun 534 121 10ms 21 Mar 2026 698th deancureton 533 121 11ms 30 Dec 2024 699th msbranicky 531 126 2,384ms 9 Jan 2025 700th jusaka 531 176 544ms 10 days ago 701st chartung17 530 122 10ms 24 Mar 2025 702nd Protothor 529 122 10ms 10 Mar 2026 703rd dokutan 527 131 2ms 10 Feb 2026 704th msbranicky 526 123 17ms 3 Oct 2024 704th bobbysq 526 123 12ms 5 Oct 2024 704th wuzekai518 526 123 10ms 8 Oct 2024 704th denkyuu1 526 123 16ms 10 Mar 2026 704th fuzzylojik-golf 🇺🇸 526 123 17ms 27 Mar 2026 709th Macweese 525 178 448ms 3 Aug 2025 710th galloj 🇨🇿 522 112 22ms 4 Oct 2024 711th NotEvenIndian 522 124 14ms 22 Oct 2024 711th ridingqwerty 🇺🇸 522 124 20ms 16 Jan 2025 711th CommandLeo 🇮🇹 522 124 11ms 5 Oct 2025 714th snoozingnewt 🇨🇦 522 213 138ms 2 Nov 2025 715th bac0id 519 180 392ms 9 Jan 2025 716th sidok 517 109 235ms 13 Nov 2024 717th bnic24 517 125 18ms 3 Oct 2024 717th adoxography 517 125 10ms 22 Oct 2024 717th lelbal 517 125 10ms 14 Oct 2025 720th dokutan 517 143 210ms 19 Oct 2024 First Prev 641–720 of 1,007 Next Last