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 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 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 676th Yewzir 🇧🇪 460 171 15ms 26 Dec 2024 677th Jacob385 460 202 483ms 2 Oct 2024 678th madex 🇩🇪 459 104 36ms 2 Oct 2024 679th FranklinJiaChen 458 141 10ms 2 Oct 2024 680th brimstonetrader 455 142 11ms 17 Oct 2024 680th codewrite 🇬🇧 455 142 10ms 5 May 2025 680th RobGLambert 455 142 19ms 8 Jun 2025 683rd snoozingnewt 🇺🇸 454 149 4ms 17 hours ago 684th snoozingnewt 🇺🇸 453 124 213ms 17 hours ago 685th dokutan 451 63 3ms 26 Nov 2024 686th GeneralFabian 451 143 13ms 9 Dec 2024 686th CutSandstone 451 143 11ms 30 Jan 2025 686th kistlerf 🇨🇭 451 143 16ms 19 May 2025 689th snoozingnewt 🇺🇸 450 176 2ms 17 hours ago 690th varhammer 🇷🇺 450 223 12ms 23 Feb 2025 691st IISResetMe 449 104 494ms 27 Mar 2025 692nd hiichbindermax 448 144 18ms 2 Oct 2024 692nd mathisfun271 448 144 10ms 14 Oct 2024 692nd bob-th 448 144 12ms 22 Oct 2024 695th dokutan 445 109 10ms 19 Oct 2024 696th Flekay 🇩🇪 445 145 11ms 10 Jul 2025 697th grey0ut 444 105 368ms 11 Jan 2025 698th croc54 442 146 11ms 15 Dec 2024 699th MyXoToD 🇩🇪 441 146 10ms 26 May 2025 700th PyryL 🇫🇮 439 147 11ms 1 Mar 2025 701st mbittner20 436 148 10ms 13 Oct 2024 702nd psaban 433 149 17ms 31 Jul 2025 703rd KatieLG 🇬🇧 433 183 2ms 2 Oct 2025 704th dokutan 432 130 295ms 17 Oct 2024 705th KatieLG 🇬🇧 431 108 7ms 13 Oct 2024 706th Mabeloid 🇳🇴 431 133 549ms 2 Oct 2024 707th snoozingnewt 🇺🇸 430 111 36ms 17 hours ago 708th jameswmccarty 430 150 10ms 5 Oct 2024 708th yousefalizadeh 430 150 13ms 23 Oct 2024 708th feherd 430 150 11ms 31 Oct 2024 708th TheZwierzLF 🇵🇱 430 150 11ms 17 May 2025 712th snoozingnewt 🇺🇸 426 268 28ms 17 hours ago 713th adamnielson42 🇺🇸 425 152 10ms 6 Oct 2024 713th voidgloom 425 152 10ms 22 Oct 2024 713th omero-san 425 152 10ms 22 Sep 2025 713th brochmann 🇸🇪 425 152 12ms 22 days ago 717th denisfouchard 422 153 11ms 21 Aug 2025 718th MeWhenI 🇻🇦 421 143 7ms 2 Oct 2024 719th osNiko 🇧🇷 419 154 16ms 21 Aug 2025 720th FortuiteMan 🇫🇷 416 155 19ms 16 Oct 2024 720th celiendonze 🇨🇭 416 155 19ms 17 days ago 722nd Arkadios200 415 196 120ms 13 days ago 723rd Shotokhan 414 156 11ms 21 Sep 2025 724th lhulinsky 411 157 13ms 21 Oct 2024 725th ThatAlo 409 158 12ms 9 Dec 2024 726th webmiche 406 159 10ms 3 hours ago 727th dieggsy 406 247 21ms 10 Oct 2024 728th Mabeloid 🇳🇴 405 159 10ms 12 Oct 2024 729th CheeseCake628 🇳🇴 403 160 98ms 5 Nov 2024 730th pres-abhisheksinha 401 161 11ms 8 Oct 2024 731st snoozingnewt 🇺🇸 401 223 295ms 17 hours ago 732nd ibixina 398 162 11ms 13 Oct 2024 732nd TheAtrossian 398 162 11ms 5 Jan 2025 734th Ralac07 🇦🇺 397 162 10ms 3 Oct 2024 735th Maximizer02 396 201 11ms 1 Oct 2024 736th Vaekor 391 165 12ms 15 Dec 2024 737th fischfood 384 176 4ms 22 Oct 2024 738th JesseNoEyes 🇺🇸 382 169 13ms 1 Oct 2024 739th ehulinsky 🇺🇸 381 158 6ms 2 Apr 2025 740th c0d3-4-F00d 🇩🇪 381 184 2ms 9 Jan 2025 741st CheeseCake628 🇳🇴 380 151 453ms 15 days ago 742nd zyc-2024 🇨🇳 380 170 10ms 5 Oct 2024 743rd snoozingnewt 🇺🇸 379 286 41ms 17 hours ago 744th ComputerKWasTaken 🇺🇸 378 171 11ms 14 Oct 2024 745th snoozingnewt 🇺🇸 376 267 14ms 17 hours ago 746th navier-1 373 173 10ms 22 Sep 2025 747th snoozingnewt 🇺🇸 372 313 119ms 17 hours ago 748th RobGLambert 370 232 1,004ms 8 Jun 2025 749th RedzGoose 🇦🇺 369 187 116ms 2 Oct 2024 750th P1nk-P0nk 368 215 3ms 18 Oct 2024 First Prev 676–750 of 805 Next Last