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 dokutan 425 132 307ms 3 Oct 2024 752nd MeWhenI 🇻🇦 424 143 7ms 2 Oct 2024 753rd Arkadios200 415 196 95ms 20 days ago 754th dieggsy 406 247 21ms 10 Oct 2024 755th snoozingnewt 🇺🇸 406 313 45ms 7 days ago 756th Mabeloid 🇳🇴 405 159 13ms 12 Oct 2024 757th snoozingnewt 🇺🇸 401 223 295ms 7 days ago 758th Ralac07 🇦🇺 397 162 11ms 3 Oct 2024 759th ehulinsky 🇺🇸 384 158 6ms 2 Apr 2025 760th fischfood 384 176 4ms 22 Oct 2024 761st c0d3-4-F00d 🇩🇪 381 184 2ms 9 Jan 2025 762nd snoozingnewt 🇺🇸 379 286 41ms 7 days ago 763rd snoozingnewt 🇺🇸 376 267 13ms 7 days ago 764th RobGLambert 370 232 975ms 8 Jun 2025 765th RedzGoose 🇦🇺 369 187 116ms 2 Oct 2024 766th P1nk-P0nk 368 215 3ms 18 Oct 2024 767th gautambp 365 218 11ms 24 Jun 2025 768th sciencejiho 356 197 2ms 11 Feb 2025 769th The-Wolfson 354 230 102ms 16 Dec 2024 770th Zhenyu-Bo 349 228 11ms 30 Jul 2025 771st EthanJantz 346 230 11ms 5 Sep 2025 772nd RobGLambert 341 273 192ms 8 Jun 2025 773rd Ernest1338 339 275 266ms 26 Oct 2024 774th noahhorlacher 337 191 9ms 7 Dec 2024 775th RobertBurs 336 237 10ms 22 Sep 2025 776th TJK-S 330 241 10ms 16 days ago 777th te-chnical 309 258 202ms 4 May 2025 778th snoozingnewt 🇺🇸 303 200 4ms 7 days ago 779th KatieLG 🇬🇧 296 290 1,770ms 1 Oct 2025 780th KatieLG 🇬🇧 291 241 2ms 1 Oct 2025 781st ReterikHub 277 310 204ms 17 Jan 2025 782nd Mikey-Beep 🇬🇧 273 349 25ms 12 Aug 2025 783rd MeWhenI 🇻🇦 271 407 132ms 6 Oct 2024 784th arebbsba 269 296 11ms 9 Jan 2025 785th Msleizak 🇫🇷 206 226 269ms 19 May 2025 786th AidanWalter 147 540 11ms 1 Jan 2025 787th vkptimon 120 776 307ms 9 Jul 2025 788th bignamehyp 119 667 12ms 14 Nov 2024 789th dokutan 60 2,475 158ms 18 Aug 2025 790th iczelia 🇩🇪 52 2,045 4ms 27 days ago 791st lyphyser 0 15 80ms 25 May 2025 792nd 2bular 0 16 76ms 22 Mar 2025 793rd darrenks 0 17 78ms 22 Mar 2025 794th Natanaelel 🇸🇪 0 18 74ms 23 Mar 2025 795th plcc0 0 21 99ms 4 Apr 2025 796th kg583 🇺🇸 0 25 267ms 8 Feb 2025 796th namelessiw 0 25 411ms 12 Oct 2025 798th lyxal 🇦🇺 0 27 494ms 17 May 2025 799th themoonisacheese 0 35 484ms 13 Jun 2025 800th ovs-code 🇩🇪 0 54 4ms 9 Jul 2025 801st GrayJoKing 🇦🇺 0 55 3ms 13 Jul 2025 802nd ovs-code 🇩🇪 0 58 3ms 13 Jul 2025 803rd AlephSquirrel 0 63 4ms 15 Jun 2025 804th DialFrost 🇸🇬 0 67 78ms 13 Feb 2025 805th chunes3 🇺🇸 0 69 41ms 13 Feb 2025 806th maweowo 🇩🇪 0 70 5ms 2 Oct 2025 807th evnu 0 73 5ms 12 Oct 2025 808th ovs-code 🇩🇪 0 76 15ms 13 Jun 2025 809th sean-niemann 🇺🇸 0 80 69ms 29 Apr 2025 810th albanian-laundromat 0 123 2ms 4 Jun 2025 811th edsrzf 🇳🇿 0 142 216ms 24 Jul 2025 812th MatthewF19 0 192 119ms 17 May 2025 813th dokutan 0 219 65ms 28 Jun 2025 First Prev 751–813 of 813