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 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 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 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 Tower of Hanoi 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 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 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 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 Tower of Hanoi Turtle Tutorial # Golfer Points Chars Time Submitted 673rd smilesformiles3 461 140 23ms 12 Jun 2025 673rd artem-aramma 461 140 17ms 18 Jun 2025 678th snoozingnewt 🇺🇸 460 96 3ms 6 days ago 679th Yewzir 🇧🇪 460 171 15ms 26 Dec 2024 680th Jacob385 460 202 298ms 2 Oct 2024 681st madex 🇩🇪 459 104 36ms 2 Oct 2024 682nd FranklinJiaChen 458 141 10ms 2 Oct 2024 683rd brimstonetrader 455 142 11ms 17 Oct 2024 683rd codewrite 🇬🇧 455 142 10ms 5 May 2025 683rd RobGLambert 455 142 19ms 8 Jun 2025 686th snoozingnewt 🇺🇸 454 149 4ms 6 days ago 687th snoozingnewt 🇺🇸 453 124 213ms 6 days ago 688th dokutan 451 63 2ms 26 Nov 2024 689th GeneralFabian 451 143 13ms 9 Dec 2024 689th CutSandstone 451 143 11ms 30 Jan 2025 689th kistlerf 🇨🇭 451 143 16ms 19 May 2025 692nd snoozingnewt 🇺🇸 450 176 2ms 6 days ago 693rd varhammer 🇷🇺 450 223 12ms 23 Feb 2025 694th IISResetMe 449 104 494ms 27 Mar 2025 695th hiichbindermax 448 144 18ms 2 Oct 2024 695th mathisfun271 448 144 10ms 14 Oct 2024 695th bob-th 448 144 12ms 22 Oct 2024 698th dokutan 445 109 10ms 19 Oct 2024 699th Flekay 🇩🇪 445 145 11ms 10 Jul 2025 700th grey0ut 444 105 368ms 11 Jan 2025 701st croc54 442 146 11ms 15 Dec 2024 702nd MyXoToD 🇩🇪 441 146 10ms 26 May 2025 703rd PyryL 🇫🇮 439 147 11ms 1 Mar 2025 704th mbittner20 436 148 10ms 13 Oct 2024 705th psaban 433 149 17ms 31 Jul 2025 706th KatieLG 🇬🇧 433 183 2ms 2 Oct 2025 707th dokutan 432 130 295ms 17 Oct 2024 708th KatieLG 🇬🇧 431 108 7ms 13 Oct 2024 709th Mabeloid 🇳🇴 431 133 549ms 2 Oct 2024 710th snoozingnewt 🇺🇸 430 111 36ms 6 days ago 711th jameswmccarty 430 150 10ms 5 Oct 2024 711th yousefalizadeh 430 150 13ms 23 Oct 2024 711th feherd 430 150 11ms 31 Oct 2024 711th TheZwierzLF 🇵🇱 430 150 11ms 17 May 2025 711th kadamkaustubh 430 150 10ms 27 hours ago 716th snoozingnewt 🇺🇸 426 268 28ms 6 days ago 717th adamnielson42 🇺🇸 425 152 10ms 6 Oct 2024 717th voidgloom 425 152 10ms 22 Oct 2024 717th omero-san 425 152 10ms 22 Sep 2025 717th brochmann 🇸🇪 425 152 12ms 27 days ago 721st denisfouchard 422 153 11ms 21 Aug 2025 722nd MeWhenI 🇻🇦 421 143 7ms 2 Oct 2024 723rd osNiko 🇧🇷 419 154 16ms 21 Aug 2025 724th FortuiteMan 🇫🇷 417 155 19ms 16 Oct 2024 724th celiendonze 🇨🇭 417 155 19ms 22 days ago 726th Arkadios200 415 196 101ms 19 days ago 727th Shotokhan 414 156 11ms 21 Sep 2025 728th lhulinsky 411 157 13ms 21 Oct 2024 729th ThatAlo 409 158 12ms 9 Dec 2024 730th webmiche 406 159 10ms 5 days ago 731st dieggsy 406 247 21ms 10 Oct 2024 732nd Mabeloid 🇳🇴 405 159 10ms 12 Oct 2024 733rd CheeseCake628 🇳🇴 403 160 98ms 5 Nov 2024 734th pres-abhisheksinha 401 161 11ms 8 Oct 2024 735th snoozingnewt 🇺🇸 401 223 295ms 6 days ago 736th ibixina 399 162 11ms 13 Oct 2024 736th TheAtrossian 399 162 11ms 5 Jan 2025 738th Ralac07 🇦🇺 397 162 10ms 3 Oct 2024 739th Maximizer02 396 201 11ms 1 Oct 2024 740th Vaekor 391 165 12ms 15 Dec 2024 741st fischfood 384 176 4ms 22 Oct 2024 742nd JesseNoEyes 🇺🇸 382 169 13ms 1 Oct 2024 743rd ehulinsky 🇺🇸 381 158 6ms 2 Apr 2025 744th c0d3-4-F00d 🇩🇪 381 184 2ms 9 Jan 2025 745th CheeseCake628 🇳🇴 380 151 453ms 21 days ago 746th zyc-2024 🇨🇳 380 170 10ms 5 Oct 2024 747th snoozingnewt 🇺🇸 379 286 41ms 6 days ago 748th ComputerKWasTaken 🇺🇸 378 171 11ms 14 Oct 2024 749th snoozingnewt 🇺🇸 376 267 14ms 6 days ago 750th navier-1 373 173 10ms 22 Sep 2025 First Prev 676–750 of 809 Next Last