Card Number Validation in all languages in chars. Achievements Cheevos Holes Languages Medals Miscellaneous 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 Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Multitap Input 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 Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang 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 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> ALGOL 68 ArkScript Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang 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 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily 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 Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Multitap Input 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 Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 881st Zhenyu-Bo 284 228 11ms 30 Jul 2025 882nd fantaize 284 330 201ms 10 Mar 2026 883rd EthanJantz 281 230 11ms 5 Sep 2025 884th ReterikHub 280 310 209ms 17 Jan 2025 885th RobertBurs 273 237 10ms 22 Sep 2025 886th Mikey-Beep 🇬🇧 273 349 16ms 12 Aug 2025 887th MeWhenI 🇻🇦 272 407 119ms 6 Oct 2024 888th TJK-S 268 241 11ms 25 Oct 2025 888th NoneTheFewer 268 241 11ms 25 Dec 2025 890th kasarino 258 373 44ms 8 Feb 2026 891st te-chnical 251 258 214ms 4 May 2025 892nd arebbsba 218 296 11ms 9 Jan 2025 893rd kasarino 216 299 11ms 8 Feb 2026 894th Msleizak 🇫🇷 206 226 270ms 19 May 2025 895th benanlam 202 320 10ms 21 Dec 2025 896th theEsteemed 154 606 407ms 20 Jan 2026 897th AidanWalter 120 540 10ms 1 Jan 2025 898th vkptimon 120 776 422ms 9 Jul 2025 899th bignamehyp 97 667 10ms 14 Nov 2024 900th dokutan 60 2,474 116ms 18 Aug 2025 901st iczelia 🇩🇪 52 2,045 4ms 14 Oct 2025 902nd lyphyser 0 15 32ms 25 May 2025 902nd 2bular 0 15 34ms 14 Feb 2026 902nd Natanaelel 🇸🇪 0 15 35ms 17 Feb 2026 905th namelessiw 0 16 141ms 19 Nov 2025 905th darrenks 🇺🇸 0 16 33ms 14 Feb 2026 907th lyxal 🇦🇺 0 18 848ms 17 May 2025 907th themoonisacheese 0 18 874ms 13 Jun 2025 907th plcc0 0 18 35ms 14 Feb 2026 910th kg583 🇺🇸 0 20 267ms 14 May 2025 910th jshholland 0 20 836ms 19 Feb 2026 912th plcc0 0 30 97ms 31 Jan 2026 913th ovs-code 🇩🇪 0 37 3ms 13 Jul 2025 914th maweowo 🇩🇪 0 39 4ms 2 Oct 2025 915th ovs-code 🇩🇪 0 40 5ms 9 Jul 2025 916th AlephSquirrel 0 43 3ms 15 Jun 2025 916th commandz0 🇺🇸 0 43 4ms 10 Jan 2026 918th evnu 0 44 5ms 12 Oct 2025 919th NicoBliss 0 47 9ms 11 Jan 2026 920th ovs-code 🇩🇪 0 51 15ms 13 Jun 2025 921st GrayJoKing 🇦🇺 0 55 3ms 13 Jul 2025 922nd KatieLG 🇬🇧 0 56 4ms 10 Jan 2026 923rd chunes3 🇺🇸 0 65 7ms 13 Feb 2025 924th DialFrost 🇸🇬 0 66 11ms 4 Dec 2025 925th sean-niemann 🇺🇸 0 68 58ms 30 Apr 2025 926th dokutan 0 84 63ms 10 days ago 927th dokutan 0 89 59ms 28 Jun 2025 928th MatthewF19 0 108 108ms 17 May 2025 929th albanian-laundromat 🇺🇸 0 123 2ms 4 Jun 2025 930th dokutan 0 138 8ms 11 Jan 2026 931st edsrzf 🇳🇿 0 142 186ms 24 Jul 2025 First Prev 881–931 of 931