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 snoozingnewt 🇺🇸 426 268 28ms 9 days ago 752nd dokutan 425 132 307ms 3 Oct 2024 753rd MeWhenI 🇻🇦 424 143 7ms 2 Oct 2024 754th Arkadios200 415 196 95ms 21 days ago 755th dieggsy 406 247 21ms 10 Oct 2024 756th snoozingnewt 🇺🇸 406 313 45ms 9 days ago 757th Mabeloid 🇳🇴 405 159 13ms 12 Oct 2024 758th snoozingnewt 🇺🇸 404 223 295ms 9 days ago 759th Ralac07 🇦🇺 397 162 11ms 3 Oct 2024 760th ehulinsky 🇺🇸 384 158 6ms 2 Apr 2025 761st fischfood 384 176 4ms 22 Oct 2024 762nd c0d3-4-F00d 🇩🇪 381 184 2ms 9 Jan 2025 763rd snoozingnewt 🇺🇸 379 286 41ms 9 days ago 764th snoozingnewt 🇺🇸 376 267 13ms 9 days ago 765th RobGLambert 370 232 975ms 8 Jun 2025 766th RedzGoose 🇦🇺 369 187 116ms 2 Oct 2024 767th P1nk-P0nk 368 215 3ms 18 Oct 2024 768th gautambp 365 218 11ms 24 Jun 2025 769th sciencejiho 356 197 2ms 11 Feb 2025 770th The-Wolfson 354 230 102ms 16 Dec 2024 771st Zhenyu-Bo 349 228 11ms 30 Jul 2025 772nd EthanJantz 346 230 11ms 5 Sep 2025 773rd RobGLambert 341 273 192ms 8 Jun 2025 774th Ernest1338 339 275 266ms 26 Oct 2024 775th noahhorlacher 337 191 9ms 7 Dec 2024 776th RobertBurs 336 237 10ms 22 Sep 2025 777th TJK-S 330 241 10ms 17 days ago 778th te-chnical 309 258 202ms 4 May 2025 779th snoozingnewt 🇺🇸 303 200 4ms 9 days ago 780th KatieLG 🇬🇧 296 290 1,770ms 1 Oct 2025 781st KatieLG 🇬🇧 291 241 2ms 1 Oct 2025 782nd ReterikHub 277 310 204ms 17 Jan 2025 783rd Mikey-Beep 🇬🇧 273 349 25ms 12 Aug 2025 784th MeWhenI 🇻🇦 271 407 132ms 6 Oct 2024 785th arebbsba 269 296 11ms 9 Jan 2025 786th Msleizak 🇫🇷 206 226 269ms 19 May 2025 787th AidanWalter 147 540 11ms 1 Jan 2025 788th vkptimon 120 776 307ms 9 Jul 2025 789th bignamehyp 119 667 12ms 14 Nov 2024 790th dokutan 60 2,475 158ms 18 Aug 2025 791st iczelia 🇩🇪 52 2,045 4ms 14 Oct 2025 792nd lyphyser 0 15 80ms 25 May 2025 793rd 2bular 0 16 76ms 22 Mar 2025 794th darrenks 0 17 78ms 22 Mar 2025 795th Natanaelel 🇸🇪 0 18 74ms 23 Mar 2025 796th plcc0 0 21 99ms 4 Apr 2025 797th kg583 🇺🇸 0 25 267ms 8 Feb 2025 797th namelessiw 0 25 411ms 12 Oct 2025 799th lyxal 🇦🇺 0 27 494ms 17 May 2025 800th themoonisacheese 0 35 484ms 13 Jun 2025 801st ovs-code 🇩🇪 0 54 4ms 9 Jul 2025 802nd GrayJoKing 🇦🇺 0 55 3ms 13 Jul 2025 803rd ovs-code 🇩🇪 0 58 3ms 13 Jul 2025 804th AlephSquirrel 0 63 4ms 15 Jun 2025 805th DialFrost 🇸🇬 0 67 78ms 13 Feb 2025 806th chunes3 🇺🇸 0 69 41ms 13 Feb 2025 807th maweowo 🇩🇪 0 70 5ms 2 Oct 2025 808th evnu 0 73 5ms 12 Oct 2025 809th ovs-code 🇩🇪 0 76 15ms 13 Jun 2025 810th sean-niemann 🇺🇸 0 80 69ms 29 Apr 2025 811th albanian-laundromat 0 123 2ms 4 Jun 2025 812th edsrzf 🇳🇿 0 142 216ms 24 Jul 2025 813th MatthewF19 0 192 119ms 17 May 2025 814th dokutan 0 219 65ms 28 Jun 2025 First Prev 751–814 of 814