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 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 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 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 Tower of Hanoi Turtle Tutorial # Golfer Points Chars Time Submitted 676th NanduBC 461 140 10ms 1 Oct 2024 676th jmerle 🇳🇱 461 140 11ms 10 Jan 2025 676th RobertHoeh 461 140 10ms 3 Mar 2025 676th smilesformiles3 461 140 23ms 12 Jun 2025 676th artem-aramma 461 140 17ms 18 Jun 2025 681st snoozingnewt 🇺🇸 460 96 3ms 10 days ago 682nd Yewzir 🇧🇪 460 171 12ms 26 Dec 2024 683rd Jacob385 460 202 298ms 2 Oct 2024 684th madex 🇩🇪 459 104 36ms 2 Oct 2024 685th FranklinJiaChen 458 141 10ms 2 Oct 2024 686th brimstonetrader 455 142 11ms 17 Oct 2024 686th codewrite 🇬🇧 455 142 10ms 5 May 2025 686th RobGLambert 455 142 19ms 8 Jun 2025 689th snoozingnewt 🇺🇸 454 149 4ms 10 days ago 690th snoozingnewt 🇺🇸 453 124 213ms 10 days ago 691st dokutan 451 63 2ms 26 Nov 2024 692nd GeneralFabian 451 143 13ms 9 Dec 2024 692nd CutSandstone 451 143 11ms 30 Jan 2025 692nd kistlerf 🇨🇭 451 143 16ms 19 May 2025 695th snoozingnewt 🇺🇸 451 176 2ms 10 days ago 696th varhammer 🇷🇺 450 223 12ms 23 Feb 2025 697th IISResetMe 449 104 494ms 27 Mar 2025 698th hiichbindermax 448 144 18ms 2 Oct 2024 698th mathisfun271 448 144 10ms 14 Oct 2024 698th bob-th 448 144 12ms 22 Oct 2024 701st dokutan 445 109 10ms 19 Oct 2024 702nd Flekay 🇩🇪 445 145 11ms 10 Jul 2025 703rd grey0ut 444 105 368ms 11 Jan 2025 704th croc54 442 146 11ms 15 Dec 2024 705th MyXoToD 🇩🇪 441 146 9ms 26 May 2025 706th PyryL 🇫🇮 439 147 11ms 1 Mar 2025 707th mbittner20 436 148 10ms 13 Oct 2024 708th psaban 433 149 17ms 31 Jul 2025 709th KatieLG 🇬🇧 433 183 2ms 2 Oct 2025 709th StronkCheese2 433 183 2ms 41 hours ago 711th dokutan 432 130 295ms 17 Oct 2024 712th KatieLG 🇬🇧 431 108 7ms 13 Oct 2024 713th Mabeloid 🇳🇴 431 133 549ms 2 Oct 2024 714th snoozingnewt 🇺🇸 430 111 36ms 10 days ago 715th jameswmccarty 430 150 10ms 5 Oct 2024 715th yousefalizadeh 430 150 13ms 23 Oct 2024 715th feherd 430 150 11ms 31 Oct 2024 715th TheZwierzLF 🇵🇱 430 150 11ms 17 May 2025 715th kadamkaustubh 430 150 10ms 5 days ago 720th snoozingnewt 🇺🇸 426 268 28ms 10 days ago 721st adamnielson42 🇺🇸 425 152 10ms 6 Oct 2024 721st voidgloom 425 152 10ms 22 Oct 2024 721st omero-san 425 152 10ms 22 Sep 2025 721st brochmann 🇸🇪 425 152 12ms 12 Oct 2025 725th MeWhenI 🇻🇦 424 143 7ms 2 Oct 2024 726th denisfouchard 422 153 11ms 21 Aug 2025 727th osNiko 🇧🇷 419 154 16ms 21 Aug 2025 728th FortuiteMan 🇫🇷 417 155 19ms 16 Oct 2024 728th celiendonze 🇨🇭 417 155 19ms 27 days ago 730th Arkadios200 415 196 95ms 23 days ago 731st Shotokhan 414 156 11ms 21 Sep 2025 732nd lhulinsky 411 157 13ms 21 Oct 2024 733rd ThatAlo 409 158 12ms 9 Dec 2024 734th webmiche 406 159 10ms 10 days ago 735th dieggsy 406 247 21ms 10 Oct 2024 736th Mabeloid 🇳🇴 405 159 13ms 12 Oct 2024 737th snoozingnewt 🇺🇸 404 223 391ms 10 days ago 738th CheeseCake628 🇳🇴 403 160 98ms 5 Nov 2024 739th pres-abhisheksinha 401 161 11ms 8 Oct 2024 740th ibixina 399 162 11ms 13 Oct 2024 740th TheAtrossian 399 162 11ms 5 Jan 2025 742nd Ralac07 🇦🇺 397 162 11ms 3 Oct 2024 743rd Maximizer02 396 201 11ms 1 Oct 2024 744th Vaekor 391 165 12ms 15 Dec 2024 745th ehulinsky 🇺🇸 384 158 6ms 2 Apr 2025 746th fischfood 384 176 4ms 22 Oct 2024 747th JesseNoEyes 🇺🇸 382 169 13ms 1 Oct 2024 748th c0d3-4-F00d 🇩🇪 381 184 2ms 9 Jan 2025 749th CheeseCake628 🇳🇴 380 151 453ms 26 days ago 750th zyc-2024 🇨🇳 380 170 10ms 5 Oct 2024 First Prev 676–750 of 813 Next Last