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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 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 Dragon Curve Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Nim 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 Dragon Curve Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Nim 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 801st Andrey2001 446 129 549ms 1 Feb 2026 802nd dokutan 445 109 10ms 19 Oct 2024 803rd grey0ut 444 105 464ms 11 Jan 2025 804th croc54 443 146 11ms 15 Dec 2024 805th MyXoToD 🇩🇪 442 146 10ms 26 May 2025 806th Yewzir 🇧🇪 442 171 14ms 26 Dec 2024 807th PyryL 🇫🇮 440 147 11ms 1 Mar 2025 808th mbittner20 437 148 10ms 13 Oct 2024 808th YAJUE114514 437 148 10ms 12 Dec 2025 810th psaban 434 149 18ms 31 Jul 2025 810th TheZwierzLF 🇵🇱 434 149 11ms 24 Nov 2025 810th RodAlc24 🇪🇸 434 149 18ms 22 Feb 2026 813th dokutan 433 130 304ms 17 Oct 2024 814th Mabeloid 🇳🇴 433 133 572ms 2 Oct 2024 815th KatieLG 🇬🇧 433 183 2ms 2 Oct 2025 816th snoozingnewt 🇨🇦 432 111 36ms 2 Nov 2025 817th KatieLG 🇬🇧 431 108 6ms 13 Oct 2024 818th jameswmccarty 431 150 11ms 5 Oct 2024 818th yousefalizadeh 431 150 11ms 23 Oct 2024 818th feherd 431 150 10ms 31 Oct 2024 818th kadamkaustubh 431 150 11ms 8 Nov 2025 822nd varhammer 431 223 12ms 23 Feb 2025 823rd adamnielson42 🇺🇸 425 152 10ms 6 Oct 2024 823rd voidgloom 425 152 11ms 22 Oct 2024 823rd omero-san 425 152 10ms 22 Sep 2025 823rd brochmann 🇸🇪 425 152 10ms 12 Oct 2025 827th JOrE20 424 136 751ms 7 Dec 2025 828th MeWhenI 🇻🇦 424 143 6ms 2 Oct 2024 829th denisfouchard 423 153 10ms 21 Aug 2025 830th osNiko 🇧🇷 420 154 11ms 21 Aug 2025 831st scpchicken 🇵🇼 418 91 187ms 22 days ago 832nd celiendonze 🇨🇭 417 155 11ms 17 Oct 2025 833rd Shotokhan 415 156 10ms 21 Sep 2025 834th lhulinsky 412 157 11ms 21 Oct 2024 835th snoozingnewt 🇨🇦 411 267 28ms 18 Dec 2025 836th ellis-rix 409 158 11ms 9 Dec 2024 837th webmiche 407 159 11ms 3 Nov 2025 838th Mabeloid 🇳🇴 406 159 11ms 12 Oct 2024 839th CheeseCake628 🇳🇴 404 160 108ms 5 Nov 2024 840th snoozingnewt 🇨🇦 404 223 96ms 2 Nov 2025 841st pres-abhisheksinha 402 161 10ms 8 Oct 2024 842nd aksyristos 401 172 2ms 23 Nov 2025 843rd ibixina 399 162 10ms 13 Oct 2024 843rd TheAtrossian 399 162 13ms 5 Jan 2025 845th Ralac07 🇦🇺 398 162 14ms 3 Oct 2024 846th zgialor-lab 397 163 18ms 7 days ago 847th Maximizer02 396 201 12ms 1 Oct 2024 848th Vaekor 392 165 11ms 15 Dec 2024 849th snoozingnewt 🇨🇦 392 276 40ms 6 Dec 2025 850th dieggsy 389 247 19ms 10 Oct 2024 851st fischfood 385 176 5ms 22 Oct 2024 852nd JOrE20 385 191 157ms 27 Jan 2026 853rd ehulinsky 🇺🇸 384 158 5ms 2 Apr 2025 854th JesseNoEyes 🇺🇸 383 169 10ms 1 Oct 2024 855th CheeseCake628 🇳🇴 381 151 532ms 18 Oct 2025 856th zyc-2024 🇨🇳 380 170 10ms 5 Oct 2024 857th ComputerKWasTaken 🇺🇸 378 171 11ms 14 Oct 2024 858th c0d3-4-F00d 🇩🇪 375 184 2ms 9 Jan 2025 859th KatieLG 🇬🇧 375 218 118ms 21 Nov 2025 860th RobGLambert 375 232 1,411ms 8 Jun 2025 861st navier-1 374 173 10ms 22 Sep 2025 861st ComradeSquirrel 374 173 10ms 7 days ago 863rd RedzGoose 🇦🇺 371 187 119ms 2 Oct 2024 864th P1nk-P0nk 369 215 3ms 18 Oct 2024 865th clayboll99 367 176 11ms 10 Jul 2025 866th muser-logiccpu 🇺🇦 365 177 18ms 9 Aug 2025 867th snoozingnewt 🇨🇦 364 313 40ms 2 Nov 2025 868th OSYCh314 🇦🇺 363 178 11ms 2 Nov 2024 869th snoozingnewt 🇨🇦 360 267 13ms 2 Nov 2025 870th calum12345 359 180 11ms 26 Mar 2025 871st zt14427 355 182 10ms 27 Dec 2024 872nd The-Wolfson 355 230 111ms 16 Dec 2024 873rd IoLimmer 353 183 11ms 10 Oct 2024 874th sciencejiho 350 197 2ms 11 Feb 2025 875th estomagordo 🇳🇱 348 186 11ms 15 Jul 2025 876th RobGLambert 343 273 200ms 8 Jun 2025 877th Ernest1338 341 275 276ms 26 Oct 2024 878th noahhorlacher 338 191 12ms 7 Dec 2024 879th Inbarw100 333 207 2ms 23 days ago 880th JOrE20 314 389 56ms 4 Dec 2025 881st snoozingnewt 🇨🇦 303 200 4ms 2 Nov 2025 882nd KatieLG 🇬🇧 300 290 2,515ms 1 Oct 2025 883rd gautambp 297 218 11ms 24 Jun 2025 884th kasarino 287 240 2ms 8 Feb 2026 885th KatieLG 🇬🇧 286 241 2ms 1 Oct 2025 886th Zhenyu-Bo 284 228 11ms 30 Jul 2025 887th fantaize 284 330 204ms 10 Mar 2026 888th EthanJantz 281 230 12ms 5 Sep 2025 889th ReterikHub 280 310 215ms 17 Jan 2025 890th Mikey-Beep 🇬🇧 277 344 17ms 8 days ago 891st RobertBurs 273 237 11ms 22 Sep 2025 892nd MeWhenI 🇻🇦 272 407 119ms 6 Oct 2024 893rd TJK-S 268 241 12ms 25 Oct 2025 893rd NoneTheFewer 268 241 11ms 25 Dec 2025 895th kasarino 258 373 44ms 8 Feb 2026 896th te-chnical 251 258 222ms 4 May 2025 897th arebbsba 218 296 10ms 9 Jan 2025 898th scpchicken 🇵🇼 217 330 454ms 14 hours ago 899th kasarino 216 299 11ms 8 Feb 2026 900th Msleizak 🇫🇷 206 226 241ms 19 May 2025 First Prev 801–900 of 939 Next Last