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 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 Bytes Time Submitted 751st Mabeloid 🇳🇴 405 159 10ms 12 Oct 2024 752nd snoozingnewt 🇺🇸 401 223 295ms 21 hours ago 753rd Ralac07 🇦🇺 397 162 10ms 3 Oct 2024 754th fischfood 384 176 4ms 22 Oct 2024 755th ehulinsky 🇺🇸 381 158 6ms 2 Apr 2025 756th c0d3-4-F00d 🇩🇪 381 184 2ms 9 Jan 2025 757th snoozingnewt 🇺🇸 379 286 41ms 21 hours ago 758th snoozingnewt 🇺🇸 376 267 14ms 21 hours ago 759th RobGLambert 370 232 1,004ms 8 Jun 2025 760th RedzGoose 🇦🇺 369 187 116ms 2 Oct 2024 761st P1nk-P0nk 368 215 3ms 18 Oct 2024 762nd gautambp 365 218 11ms 24 Jun 2025 763rd sciencejiho 356 197 2ms 11 Feb 2025 764th The-Wolfson 354 230 114ms 16 Dec 2024 765th Zhenyu-Bo 349 228 11ms 30 Jul 2025 766th EthanJantz 346 230 11ms 5 Sep 2025 767th RobGLambert 341 273 192ms 8 Jun 2025 768th Ernest1338 339 275 266ms 26 Oct 2024 769th noahhorlacher 337 191 10ms 7 Dec 2024 770th RobertBurs 336 237 10ms 22 Sep 2025 771st TJK-S 330 241 10ms 9 days ago 772nd te-chnical 309 258 202ms 4 May 2025 773rd snoozingnewt 🇺🇸 301 200 4ms 21 hours ago 774th KatieLG 🇬🇧 296 290 2,227ms 1 Oct 2025 775th KatieLG 🇬🇧 291 241 2ms 1 Oct 2025 776th ReterikHub 277 310 214ms 17 Jan 2025 777th Mikey-Beep 🇬🇧 273 349 25ms 12 Aug 2025 778th MeWhenI 🇻🇦 271 407 132ms 6 Oct 2024 779th arebbsba 269 296 11ms 9 Jan 2025 780th Msleizak 🇫🇷 206 226 269ms 19 May 2025 781st AidanWalter 147 540 11ms 1 Jan 2025 782nd vkptimon 120 776 322ms 9 Jul 2025 783rd bignamehyp 119 667 12ms 14 Nov 2024 784th dokutan 60 2,475 158ms 18 Aug 2025 785th iczelia 🇩🇪 52 2,045 4ms 20 days ago 786th lyphyser 0 15 80ms 25 May 2025 787th 2bular 0 16 76ms 22 Mar 2025 788th darrenks 0 17 78ms 22 Mar 2025 789th Natanaelel 🇸🇪 0 18 74ms 23 Mar 2025 790th plcc0 0 21 99ms 4 Apr 2025 791st kg583 🇺🇸 0 25 267ms 8 Feb 2025 791st namelessiw 0 25 411ms 22 days ago 793rd lyxal 🇦🇺 0 27 1,009ms 17 May 2025 794th themoonisacheese 0 35 709ms 13 Jun 2025 795th ovs-code 🇩🇪 0 54 5ms 9 Jul 2025 796th GrayJoKing 🇦🇺 0 55 3ms 13 Jul 2025 797th ovs-code 🇩🇪 0 58 3ms 13 Jul 2025 798th AlephSquirrel 0 63 4ms 15 Jun 2025 799th DialFrost 🇸🇬 0 67 77ms 13 Feb 2025 800th chunes3 🇺🇸 0 69 38ms 13 Feb 2025 801st maweowo 🇩🇪 0 70 5ms 2 Oct 2025 802nd evnu 0 73 5ms 22 days ago 803rd ovs-code 🇩🇪 0 76 15ms 13 Jun 2025 804th sean-niemann 🇺🇸 0 80 69ms 29 Apr 2025 805th albanian-laundromat 0 123 2ms 4 Jun 2025 806th edsrzf 🇳🇿 0 142 216ms 24 Jul 2025 807th MatthewF19 0 192 119ms 17 May 2025 808th dokutan 0 219 65ms 28 Jun 2025 First Prev 751–808 of 808