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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 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 Continued Fractions Crossword 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 Taxicab 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 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 ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel 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 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 ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel 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 Continued Fractions Crossword 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 Taxicab Numbers Tower of Hanoi Turtle Tutorial # Golfer Points Chars Time Submitted 751st CheeseCake628 🇳🇴 404 160 99ms 5 Nov 2024 752nd snoozingnewt 🇺🇸 404 223 102ms 25 days ago 753rd pres-abhisheksinha 401 161 9ms 8 Oct 2024 754th ibixina 399 162 10ms 13 Oct 2024 754th TheAtrossian 399 162 10ms 5 Jan 2025 756th Ralac07 🇦🇺 397 162 10ms 3 Oct 2024 757th Maximizer02 396 201 10ms 1 Oct 2024 758th Vaekor 391 165 9ms 15 Dec 2024 759th ehulinsky 🇺🇸 384 158 5ms 2 Apr 2025 760th fischfood 384 176 4ms 22 Oct 2024 761st JesseNoEyes 🇺🇸 382 169 10ms 1 Oct 2024 762nd c0d3-4-F00d 🇩🇪 382 184 2ms 9 Jan 2025 763rd CheeseCake628 🇳🇴 381 151 453ms 18 Oct 2025 764th zyc-2024 🇨🇳 380 170 10ms 5 Oct 2024 765th snoozingnewt 🇺🇸 379 286 41ms 25 days ago 766th ComputerKWasTaken 🇺🇸 378 171 9ms 14 Oct 2024 767th snoozingnewt 🇺🇸 376 267 13ms 25 days ago 768th KatieLG 🇬🇧 375 218 112ms 6 days ago 769th navier-1 373 173 10ms 22 Sep 2025 770th snoozingnewt 🇺🇸 372 313 45ms 25 days ago 771st RobGLambert 370 232 915ms 8 Jun 2025 772nd RedzGoose 🇦🇺 369 187 102ms 2 Oct 2024 773rd P1nk-P0nk 369 215 3ms 18 Oct 2024 774th clayboll99 367 176 11ms 10 Jul 2025 775th Upload-and-View 🇺🇦 365 177 16ms 9 Aug 2025 776th OSYCh314 🇦🇺 363 178 11ms 2 Nov 2024 777th calum12345 359 180 10ms 26 Mar 2025 778th sciencejiho 357 197 2ms 11 Feb 2025 779th zt14427 355 182 11ms 27 Dec 2024 780th The-Wolfson 355 230 98ms 16 Dec 2024 781st IoLimmer 353 183 11ms 10 Oct 2024 782nd aksyristos 351 184 16ms 15 Nov 2024 783rd estomagordo 🇳🇱 347 186 10ms 15 Jul 2025 784th RobGLambert 342 273 200ms 8 Jun 2025 785th Ernest1338 339 275 275ms 26 Oct 2024 786th noahhorlacher 337 191 10ms 7 Dec 2024 787th snoozingnewt 🇺🇸 303 200 3ms 25 days ago 788th gautambp 296 218 10ms 24 Jun 2025 789th KatieLG 🇬🇧 296 290 1,806ms 1 Oct 2025 790th KatieLG 🇬🇧 292 241 2ms 1 Oct 2025 791st Zhenyu-Bo 283 228 14ms 30 Jul 2025 792nd EthanJantz 281 230 10ms 5 Sep 2025 793rd ReterikHub 277 310 205ms 17 Jan 2025 794th Mikey-Beep 🇬🇧 273 349 25ms 12 Aug 2025 795th RobertBurs 272 237 10ms 22 Sep 2025 796th MeWhenI 🇻🇦 271 407 132ms 6 Oct 2024 797th TJK-S 268 241 9ms 25 Oct 2025 798th te-chnical 250 258 193ms 4 May 2025 799th arebbsba 218 296 12ms 9 Jan 2025 800th Msleizak 🇫🇷 206 226 243ms 19 May 2025 801st AidanWalter 120 540 9ms 1 Jan 2025 802nd vkptimon 120 776 307ms 9 Jul 2025 803rd bignamehyp 97 667 9ms 14 Nov 2024 804th dokutan 60 2,474 124ms 18 Aug 2025 805th iczelia 🇩🇪 52 2,045 4ms 14 Oct 2025 806th lyphyser 0 15 80ms 25 May 2025 807th 2bular 0 16 76ms 22 Mar 2025 807th namelessiw 0 16 141ms 8 days ago 809th darrenks 0 17 78ms 22 Mar 2025 810th Natanaelel 🇸🇪 0 18 74ms 23 Mar 2025 810th lyxal 🇦🇺 0 18 498ms 17 May 2025 810th themoonisacheese 0 18 484ms 13 Jun 2025 813th kg583 🇺🇸 0 20 272ms 14 May 2025 814th plcc0 0 21 99ms 4 Apr 2025 815th ovs-code 🇩🇪 0 37 3ms 13 Jul 2025 816th maweowo 🇩🇪 0 39 4ms 2 Oct 2025 817th ovs-code 🇩🇪 0 40 4ms 9 Jul 2025 818th AlephSquirrel 0 43 3ms 15 Jun 2025 819th evnu 0 44 4ms 12 Oct 2025 820th ovs-code 🇩🇪 0 51 16ms 13 Jun 2025 821st GrayJoKing 🇦🇺 0 55 3ms 13 Jul 2025 822nd chunes3 🇺🇸 0 65 6ms 13 Feb 2025 822nd DialFrost 🇸🇬 0 65 11ms 13 Feb 2025 824th sean-niemann 🇺🇸 0 68 75ms 30 Apr 2025 825th dokutan 0 89 65ms 28 Jun 2025 First Prev 751–825 of 828 Next Last