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 601st zakariamouhid 545 118 9ms 1 Oct 2024 601st JOrE20 🇺🇸 545 118 9ms 2 days ago 603rd xyangst 545 171 171ms 1 Oct 2024 603rd kmathis22 545 171 344ms 14 days ago 605th najs91 544 131 343ms 15 Oct 2024 605th bac0id 544 131 370ms 9 Jan 2025 605th CaedenHarper 🇨🇦 544 131 340ms 17 Oct 2025 608th jtaxen 543 119 17ms 21 Oct 2024 608th psbpsbp 543 119 11ms 19 Dec 2024 608th klixel 🇨🇦 543 119 10ms 9 Apr 2025 608th vhoulbreque 🇫🇷 543 119 11ms 12 days ago 612th eranws 541 119 10ms 23 Dec 2024 613th Sciman101 539 147 2ms 26 Mar 2025 614th TaserTheFox 🇺🇸 538 120 17ms 8 Oct 2024 614th yokasuretsu 538 120 11ms 26 Jan 2025 614th Troon 538 120 10ms 17 Feb 2025 617th BREMAUCY 🇫🇷 534 121 17ms 18 Jul 2025 618th msbranicky 533 175 162ms 13 Dec 2024 619th deancureton 532 121 9ms 30 Dec 2024 620th chartung17 529 122 9ms 24 Mar 2025 621st msbranicky 527 126 2,869ms 9 Jan 2025 622nd msbranicky 525 123 17ms 3 Oct 2024 622nd bobbysq 525 123 10ms 5 Oct 2024 622nd wuzekai518 525 123 10ms 8 Oct 2024 625th Macweese 524 178 308ms 3 Aug 2025 626th galloj 🇨🇿 522 112 19ms 4 Oct 2024 627th NotEvenIndian 521 124 10ms 22 Oct 2024 627th ridingqwerty 🇺🇸 521 124 16ms 16 Jan 2025 627th CommandLeo 🇮🇹 521 124 10ms 5 Oct 2025 630th blaztoma 🇱🇹 519 154 107ms 5 days ago 631st snoozingnewt 🇨🇦 519 213 119ms 2 Nov 2025 632nd bac0id 518 180 306ms 9 Jan 2025 633rd bnic24 517 125 16ms 3 Oct 2024 633rd adoxography 517 125 10ms 22 Oct 2024 633rd lelbal 517 125 10ms 14 Oct 2025 636th sidok 515 109 247ms 13 Nov 2024 637th dokutan 512 143 128ms 19 Oct 2024 638th emgordon154 511 156 8ms 13 Dec 2024 639th nephila-nacrea 🇬🇧 510 77 4ms 2 Oct 2024 640th yoshykai 510 183 309ms 12 Apr 2025 641st KatieLG 🇬🇧 509 140 358ms 1 Oct 2024 642nd KatieLG 🇬🇧 509 146 9ms 2 Oct 2024 643rd CatsAreFluffy 508 127 17ms 30 Oct 2024 643rd WillowWispy 508 127 10ms 25 May 2025 645th Chinay-Domitrix 🇺🇸 507 131 2,930ms 30 Mar 2025 646th Lv0Sys 🇵🇱 504 128 16ms 15 Jun 2025 647th madex 🇩🇪 501 129 16ms 2 Oct 2024 647th RedzGoose 🇦🇺 501 129 10ms 15 Oct 2024 647th calebaitken 501 129 9ms 11 Apr 2025 647th rollershutter 501 129 17ms 14 days ago 651st msbranicky 501 138 3ms 3 Oct 2024 652nd snoozingnewt 🇨🇦 501 142 379ms 2 Nov 2025 653rd jlangvand 499 141 1ms 15 Oct 2024 653rd HumanoidCPU 499 141 2ms 7 Mar 2025 655th MeWhenI 🇻🇦 499 149 55ms 4 Oct 2024 656th janAkali 🇷🇺 499 167 335ms 8 Oct 2024 657th Europe2048 497 130 9ms 2 Oct 2024 657th nstearns96 🇬🇧 497 130 15ms 2 Oct 2024 657th Stockoh 🇫🇷 497 130 15ms 4 Jul 2025 660th inverseLorentz 🇦🇺 493 131 10ms 7 Oct 2024 660th sciencejiho 493 131 17ms 11 Feb 2025 660th Jaydosu 493 131 10ms 11 Apr 2025 660th Emutis 🇱🇹 493 131 10ms 22 days ago 664th StronkCheese2 493 161 2ms 15 days ago 665th TheRealOhead 🇺🇸 491 131 9ms 1 Oct 2024 666th HumanoidCPU 491 145 388ms 5 Oct 2024 667th snoozingnewt 🇨🇦 488 150 135ms 2 Nov 2025 668th snoozingnewt 🇨🇦 486 117 940ms 2 Nov 2025 669th Mabeloid 🇳🇴 486 133 10ms 2 Oct 2024 670th h-hh-hhh 🇺🇦 485 177 59ms 2 Nov 2024 671st snoozingnewt 🇨🇦 483 249 27ms 2 Nov 2025 672nd snoozingnewt 🇨🇦 482 173 353ms 2 Nov 2025 673rd alphafalfa 480 92 2ms 8 Nov 2024 674th KatieLG 🇬🇧 479 120 479ms 1 Oct 2024 675th h-hh-hhh 🇺🇦 478 147 2ms 2 Nov 2024 First Prev 601–675 of 831 Next Last