Card Number Validation in all languages in bytes. 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 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 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 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 Hilbert Curve Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle 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 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 Groovy Harbour Hare Haxe Hush Hy iogii Knight 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 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 Groovy Harbour Hare Haxe Hush Hy iogii Knight 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 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 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 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 Hilbert Curve Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial # Golfer Points Bytes Time 676th varhammer 🇷🇺 448 223 23 Feb 2025 677th OSYCh314 🇦🇺 447 178 2 Nov 2024 678th dokutan 445 109 19 Oct 2024 679th grey0ut 444 105 11 Jan 2025 680th calum12345 442 180 26 Mar 2025 681st MyXoToD 🇩🇪 440 146 26 May 2025 682nd zt14427 437 182 27 Dec 2024 682nd Upload-and-View 🇺🇦 437 182 16 days ago 684th IoLimmer 434 183 10 Oct 2024 685th aksyristos 432 184 15 Nov 2024 686th estomagordo 🇳🇱 427 186 25 days ago 687th dokutan 424 132 3 Oct 2024 688th MeWhenI 🇻🇦 417 143 2 Oct 2024 689th CheeseCake628 🇳🇴 412 160 19 May 2025 690th dieggsy 405 247 10 Oct 2024 691st Mabeloid 🇳🇴 404 159 12 Oct 2024 692nd Ralac07 🇦🇺 396 162 3 Oct 2024 693rd snoozingnewt 🇺🇸 383 176 2 Oct 2024 693rd fischfood 383 176 22 Oct 2024 695th c0d3-4-F00d 🇩🇪 380 184 9 Jan 2025 696th ehulinsky 🇺🇸 378 158 2 Apr 2025 697th RedzGoose 🇦🇺 369 187 2 Oct 2024 698th RobGLambert 369 232 8 Jun 2025 699th P1nk-P0nk 367 215 18 Oct 2024 700th gautambp 365 218 24 Jun 2025 701st sciencejiho 355 197 11 Feb 2025 702nd The-Wolfson 350 230 16 Dec 2024 703rd Zhenyu-Bo 349 228 10 days ago 704th RobGLambert 340 273 8 Jun 2025 705th Ernest1338 338 275 26 Oct 2024 706th noahhorlacher 336 191 7 Dec 2024 707th te-chnical 308 258 4 May 2025 708th ReterikHub 276 310 17 Jan 2025 709th MeWhenI 🇻🇦 270 407 6 Oct 2024 710th arebbsba 269 296 9 Jan 2025 711th Msleizak 🇫🇷 206 226 19 May 2025 712th vkptimon 150 776 9 Jul 2025 713th AidanWalter 147 540 1 Jan 2025 714th bignamehyp 119 667 14 Nov 2024 715th lyphyser 0 15 25 May 2025 716th 2bular 0 16 22 Mar 2025 717th darrenks 0 17 22 Mar 2025 718th Natanaelel 🇸🇪 0 18 23 Mar 2025 719th plcc0 0 21 4 Apr 2025 720th kg583 🇺🇸 0 25 8 Feb 2025 721st lyxal 🇦🇺 0 27 17 May 2025 722nd themoonisacheese 0 35 13 Jun 2025 723rd ovs-code 🇩🇪 0 54 9 Jul 2025 724th GrayJoKing 🇦🇺 0 55 27 days ago 725th ovs-code 🇩🇪 0 58 27 days ago 726th AlephSquirrel 0 63 15 Jun 2025 727th DialFrost 🇸🇬 0 67 13 Feb 2025 728th chunes3 🇺🇸 0 69 13 Feb 2025 729th ovs-code 🇩🇪 0 76 13 Jun 2025 730th sean-niemann 🇺🇸 0 80 29 Apr 2025 731st albanian-laundromat 0 123 4 Jun 2025 732nd edsrzf 🇳🇿 0 142 16 days ago 733rd MatthewF19 0 192 17 May 2025 734th dokutan 0 219 28 Jun 2025 Prev 676–734 of 734