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 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 Bytes Time Submitted 751st dieggsy 406 247 21ms 10 Oct 2024 752nd snoozingnewt 🇺🇸 406 313 45ms 5 days ago 753rd Mabeloid 🇳🇴 405 159 10ms 12 Oct 2024 754th snoozingnewt 🇺🇸 401 223 295ms 5 days ago 755th Ralac07 🇦🇺 397 162 10ms 3 Oct 2024 756th fischfood 384 176 4ms 22 Oct 2024 757th ehulinsky 🇺🇸 381 158 6ms 2 Apr 2025 758th c0d3-4-F00d 🇩🇪 381 184 2ms 9 Jan 2025 759th snoozingnewt 🇺🇸 379 286 41ms 5 days ago 760th snoozingnewt 🇺🇸 376 267 14ms 5 days ago 761st RobGLambert 370 232 975ms 8 Jun 2025 762nd RedzGoose 🇦🇺 369 187 116ms 2 Oct 2024 763rd P1nk-P0nk 368 215 3ms 18 Oct 2024 764th gautambp 365 218 11ms 24 Jun 2025 765th sciencejiho 356 197 2ms 11 Feb 2025 766th The-Wolfson 354 230 103ms 16 Dec 2024 767th Zhenyu-Bo 349 228 11ms 30 Jul 2025 768th EthanJantz 346 230 11ms 5 Sep 2025 769th RobGLambert 341 273 192ms 8 Jun 2025 770th Ernest1338 339 275 266ms 26 Oct 2024 771st noahhorlacher 337 191 10ms 7 Dec 2024 772nd RobertBurs 336 237 10ms 22 Sep 2025 773rd TJK-S 330 241 10ms 13 days ago 774th te-chnical 309 258 202ms 4 May 2025 775th snoozingnewt 🇺🇸 301 200 4ms 5 days ago 776th KatieLG 🇬🇧 296 290 1,770ms 1 Oct 2025 777th KatieLG 🇬🇧 291 241 2ms 1 Oct 2025 778th ReterikHub 277 310 205ms 17 Jan 2025 779th Mikey-Beep 🇬🇧 273 349 25ms 12 Aug 2025 780th MeWhenI 🇻🇦 271 407 132ms 6 Oct 2024 781st arebbsba 269 296 11ms 9 Jan 2025 782nd Msleizak 🇫🇷 206 226 269ms 19 May 2025 783rd AidanWalter 147 540 11ms 1 Jan 2025 784th vkptimon 120 776 322ms 9 Jul 2025 785th bignamehyp 119 667 12ms 14 Nov 2024 786th dokutan 60 2,475 158ms 18 Aug 2025 787th iczelia 🇩🇪 52 2,045 4ms 24 days ago 788th lyphyser 0 15 80ms 25 May 2025 789th 2bular 0 16 76ms 22 Mar 2025 790th darrenks 0 17 78ms 22 Mar 2025 791st Natanaelel 🇸🇪 0 18 74ms 23 Mar 2025 792nd plcc0 0 21 99ms 4 Apr 2025 793rd kg583 🇺🇸 0 25 267ms 8 Feb 2025 793rd namelessiw 0 25 411ms 26 days ago 795th lyxal 🇦🇺 0 27 723ms 17 May 2025 796th themoonisacheese 0 35 694ms 13 Jun 2025 797th ovs-code 🇩🇪 0 54 4ms 9 Jul 2025 798th GrayJoKing 🇦🇺 0 55 3ms 13 Jul 2025 799th ovs-code 🇩🇪 0 58 3ms 13 Jul 2025 800th AlephSquirrel 0 63 4ms 15 Jun 2025 801st DialFrost 🇸🇬 0 67 79ms 13 Feb 2025 802nd chunes3 🇺🇸 0 69 41ms 13 Feb 2025 803rd maweowo 🇩🇪 0 70 5ms 2 Oct 2025 804th evnu 0 73 5ms 26 days ago 805th ovs-code 🇩🇪 0 76 15ms 13 Jun 2025 806th sean-niemann 🇺🇸 0 80 69ms 29 Apr 2025 807th albanian-laundromat 0 123 2ms 4 Jun 2025 808th edsrzf 🇳🇿 0 142 216ms 24 Jul 2025 809th MatthewF19 0 192 119ms 17 May 2025 810th dokutan 0 219 65ms 28 Jun 2025 First Prev 751–810 of 810