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 snoozingnewt 🇺🇸 465 200 230ms 14 days ago 677th scpchicken 🇵🇼 464 139 16ms 6 Oct 2024 678th NanduBC 461 140 10ms 1 Oct 2024 678th jmerle 🇳🇱 461 140 10ms 10 Jan 2025 678th RobertHoeh 461 140 9ms 3 Mar 2025 678th smilesformiles3 461 140 15ms 12 Jun 2025 678th artem-aramma 461 140 16ms 18 Jun 2025 683rd Jacob385 461 202 298ms 2 Oct 2024 684th snoozingnewt 🇺🇸 460 96 3ms 15 days ago 685th Yewzir 🇧🇪 460 171 12ms 26 Dec 2024 686th madex 🇩🇪 459 104 36ms 2 Oct 2024 687th FranklinJiaChen 458 141 10ms 2 Oct 2024 688th brimstonetrader 455 142 10ms 17 Oct 2024 688th codewrite 🇬🇧 455 142 13ms 5 May 2025 688th RobGLambert 455 142 16ms 8 Jun 2025 691st snoozingnewt 🇺🇸 454 149 4ms 14 days ago 692nd snoozingnewt 🇺🇸 453 124 213ms 15 days ago 693rd dokutan 451 63 3ms 26 Nov 2024 694th GeneralFabian 451 143 9ms 9 Dec 2024 694th CutSandstone 451 143 9ms 30 Jan 2025 694th kistlerf 🇨🇭 451 143 16ms 19 May 2025 697th snoozingnewt 🇺🇸 451 176 2ms 15 days ago 698th varhammer 🇷🇺 450 223 12ms 23 Feb 2025 699th IISResetMe 449 104 494ms 27 Mar 2025 700th hiichbindermax 448 144 15ms 2 Oct 2024 700th mathisfun271 448 144 9ms 14 Oct 2024 700th bob-th 448 144 10ms 22 Oct 2024 703rd dokutan 445 109 10ms 19 Oct 2024 704th Flekay 🇩🇪 445 145 10ms 10 Jul 2025 705th grey0ut 444 105 368ms 11 Jan 2025 706th croc54 442 146 11ms 15 Dec 2024 707th MyXoToD 🇩🇪 441 146 9ms 26 May 2025 708th PyryL 🇫🇮 439 147 10ms 1 Mar 2025 709th mbittner20 436 148 9ms 13 Oct 2024 710th psaban 433 149 16ms 31 Jul 2025 711th KatieLG 🇬🇧 433 183 2ms 2 Oct 2025 711th StronkCheese2 433 183 2ms 5 days ago 713th dokutan 432 130 295ms 17 Oct 2024 714th KatieLG 🇬🇧 431 108 7ms 13 Oct 2024 715th Mabeloid 🇳🇴 431 133 549ms 2 Oct 2024 716th snoozingnewt 🇺🇸 430 111 36ms 14 days ago 717th jameswmccarty 430 150 9ms 5 Oct 2024 717th yousefalizadeh 430 150 10ms 23 Oct 2024 717th feherd 430 150 12ms 31 Oct 2024 717th TheZwierzLF 🇵🇱 430 150 10ms 17 May 2025 717th kadamkaustubh 430 150 9ms 9 days ago 722nd snoozingnewt 🇺🇸 426 268 28ms 15 days ago 723rd adamnielson42 🇺🇸 425 152 9ms 6 Oct 2024 723rd voidgloom 425 152 10ms 22 Oct 2024 723rd omero-san 425 152 9ms 22 Sep 2025 723rd brochmann 🇸🇪 425 152 10ms 12 Oct 2025 727th MeWhenI 🇻🇦 424 143 6ms 2 Oct 2024 728th denisfouchard 422 153 11ms 21 Aug 2025 729th osNiko 🇧🇷 419 154 22ms 21 Aug 2025 730th FortuiteMan 🇫🇷 417 155 16ms 16 Oct 2024 730th celiendonze 🇨🇭 417 155 11ms 17 Oct 2025 732nd Arkadios200 415 196 95ms 27 days ago 733rd Shotokhan 414 156 9ms 21 Sep 2025 734th lhulinsky 411 157 10ms 21 Oct 2024 735th ThatAlo 409 158 10ms 9 Dec 2024 736th webmiche 406 159 10ms 14 days ago 737th dieggsy 406 247 21ms 10 Oct 2024 738th Mabeloid 🇳🇴 405 159 13ms 12 Oct 2024 739th snoozingnewt 🇺🇸 404 223 83ms 15 days ago 740th CheeseCake628 🇳🇴 403 160 99ms 5 Nov 2024 741st pres-abhisheksinha 401 161 9ms 8 Oct 2024 742nd ibixina 399 162 10ms 13 Oct 2024 742nd TheAtrossian 399 162 10ms 5 Jan 2025 744th Ralac07 🇦🇺 397 162 11ms 3 Oct 2024 745th Maximizer02 396 201 11ms 1 Oct 2024 746th Vaekor 391 165 9ms 15 Dec 2024 747th ehulinsky 🇺🇸 384 158 5ms 2 Apr 2025 748th fischfood 384 176 4ms 22 Oct 2024 749th JesseNoEyes 🇺🇸 382 169 10ms 1 Oct 2024 750th c0d3-4-F00d 🇩🇪 381 184 2ms 9 Jan 2025 First Prev 676–750 of 815 Next Last