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 KatieLG 🇬🇧 296 290 2,227ms 1 Oct 2025 752nd KatieLG 🇬🇧 291 241 2ms 1 Oct 2025 753rd ReterikHub 277 310 214ms 17 Jan 2025 754th Mikey-Beep 🇬🇧 273 349 25ms 12 Aug 2025 755th MeWhenI 🇻🇦 270 407 132ms 6 Oct 2024 756th arebbsba 269 296 11ms 9 Jan 2025 757th Msleizak 🇫🇷 206 226 269ms 19 May 2025 758th AidanWalter 147 540 11ms 1 Jan 2025 759th bignamehyp 119 667 12ms 14 Nov 2024 760th vkptimon 119 776 322ms 9 Jul 2025 761st dokutan 60 2,475 158ms 18 Aug 2025 762nd iczelia 🇩🇪 52 2,045 4ms 18 days ago 763rd lyphyser 0 15 80ms 25 May 2025 764th 2bular 0 16 76ms 22 Mar 2025 765th darrenks 0 17 78ms 22 Mar 2025 766th Natanaelel 🇸🇪 0 18 74ms 23 Mar 2025 767th plcc0 0 21 99ms 4 Apr 2025 768th kg583 🇺🇸 0 25 267ms 8 Feb 2025 768th namelessiw 0 25 411ms 19 days ago 770th lyxal 🇦🇺 0 27 1,009ms 17 May 2025 771st themoonisacheese 0 35 709ms 13 Jun 2025 772nd ovs-code 🇩🇪 0 54 5ms 9 Jul 2025 773rd GrayJoKing 🇦🇺 0 55 3ms 13 Jul 2025 774th ovs-code 🇩🇪 0 58 3ms 13 Jul 2025 775th AlephSquirrel 0 63 4ms 15 Jun 2025 776th DialFrost 🇸🇬 0 67 85ms 13 Feb 2025 777th chunes3 🇺🇸 0 69 40ms 13 Feb 2025 778th maweowo 0 70 5ms 2 Oct 2025 779th evnu 0 73 5ms 19 days ago 780th ovs-code 🇩🇪 0 76 15ms 13 Jun 2025 781st sean-niemann 🇺🇸 0 80 69ms 29 Apr 2025 782nd albanian-laundromat 0 123 3ms 4 Jun 2025 783rd edsrzf 🇳🇿 0 142 216ms 24 Jul 2025 784th MatthewF19 0 192 119ms 17 May 2025 785th dokutan 0 219 65ms 28 Jun 2025 First Prev 751–785 of 785
KatieLG
🇬🇧
ReterikHub
Mikey-Beep
🇬🇧
MeWhenI
🇻🇦
arebbsba
Msleizak
🇫🇷
AidanWalter
bignamehyp
vkptimon
dokutan
iczelia
🇩🇪
lyphyser
2bular
darrenks
Natanaelel
🇸🇪
plcc0
kg583
🇺🇸
namelessiw
lyxal
🇦🇺
themoonisacheese
ovs-code
🇩🇪
GrayJoKing
🇦🇺
AlephSquirrel
DialFrost
🇸🇬
chunes3
🇺🇸
maweowo
evnu
sean-niemann
🇺🇸
albanian-laundromat
edsrzf
🇳🇿
MatthewF19