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 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 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 Apéry’s Constant Binary Lambda Calculus 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 Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers 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 ArkScript 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 ><> 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 ArkScript 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 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 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 Apéry’s Constant Binary Lambda Calculus 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 Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 801st dieggsy 393 247 18ms 10 Oct 2024 802nd Vaekor 392 165 11ms 15 Dec 2024 803rd snoozingnewt 🇨🇦 392 276 40ms 6 Dec 2025 804th fischfood 385 176 4ms 22 Oct 2024 805th JOrE20 385 191 109ms 24 days ago 806th ehulinsky 🇺🇸 384 158 5ms 2 Apr 2025 807th JesseNoEyes 🇺🇸 382 169 11ms 1 Oct 2024 808th CheeseCake628 🇳🇴 381 151 521ms 18 Oct 2025 809th zyc-2024 🇨🇳 380 170 10ms 5 Oct 2024 810th ComputerKWasTaken 🇺🇸 378 171 10ms 14 Oct 2024 811th KatieLG 🇬🇧 375 218 108ms 21 Nov 2025 812th RobGLambert 375 232 1,019ms 8 Jun 2025 813th navier-1 374 173 10ms 22 Sep 2025 814th c0d3-4-F00d 🇩🇪 374 184 2ms 9 Jan 2025 815th RedzGoose 🇦🇺 369 187 109ms 2 Oct 2024 816th P1nk-P0nk 369 215 3ms 18 Oct 2024 817th clayboll99 367 176 10ms 10 Jul 2025 818th muser-logiccpu 🇺🇦 365 177 18ms 9 Aug 2025 819th snoozingnewt 🇨🇦 364 313 40ms 2 Nov 2025 820th OSYCh314 🇦🇺 363 178 10ms 2 Nov 2024 821st snoozingnewt 🇨🇦 363 267 13ms 2 Nov 2025 822nd calum12345 359 180 10ms 26 Mar 2025 823rd zt14427 355 182 11ms 27 Dec 2024 824th The-Wolfson 355 230 100ms 16 Dec 2024 825th IoLimmer 353 183 10ms 10 Oct 2024 826th aksyristos 351 184 21ms 15 Nov 2024 827th sciencejiho 349 197 2ms 11 Feb 2025 828th estomagordo 🇳🇱 347 186 10ms 15 Jul 2025 829th RobGLambert 342 273 201ms 8 Jun 2025 830th Ernest1338 339 275 274ms 26 Oct 2024 831st noahhorlacher 337 191 10ms 7 Dec 2024 832nd JOrE20 312 389 56ms 4 Dec 2025 833rd snoozingnewt 🇨🇦 303 200 4ms 2 Nov 2025 834th KatieLG 🇬🇧 300 290 2,116ms 1 Oct 2025 835th gautambp 296 218 11ms 24 Jun 2025 836th kasarino 287 240 2ms 12 days ago 837th KatieLG 🇬🇧 286 241 2ms 1 Oct 2025 838th Zhenyu-Bo 283 228 11ms 30 Jul 2025 839th EthanJantz 281 230 11ms 5 Sep 2025 840th ReterikHub 280 310 199ms 17 Jan 2025 841st RobertBurs 273 237 10ms 22 Sep 2025 842nd Mikey-Beep 🇬🇧 273 349 17ms 12 Aug 2025 843rd MeWhenI 🇻🇦 272 407 119ms 6 Oct 2024 844th TJK-S 268 241 11ms 25 Oct 2025 844th NoneTheFewer 268 241 11ms 25 Dec 2025 846th kasarino 258 373 44ms 12 days ago 847th te-chnical 250 258 219ms 4 May 2025 848th arebbsba 218 296 11ms 9 Jan 2025 849th kasarino 216 299 11ms 12 days ago 850th Msleizak 🇫🇷 206 226 280ms 19 May 2025 851st benanlam 202 320 10ms 21 Dec 2025 852nd theEsteemed 154 606 472ms 20 Jan 2026 853rd AidanWalter 120 540 10ms 1 Jan 2025 854th vkptimon 120 776 422ms 9 Jul 2025 855th bignamehyp 97 667 10ms 14 Nov 2024 856th dokutan 60 2,474 116ms 18 Aug 2025 857th iczelia 🇩🇪 52 2,045 4ms 14 Oct 2025 858th lyphyser 0 15 33ms 25 May 2025 858th 2bular 0 15 32ms 6 days ago 858th Natanaelel 🇸🇪 0 15 35ms 3 days ago 861st namelessiw 0 16 141ms 19 Nov 2025 861st darrenks 🇺🇸 0 16 33ms 6 days ago 863rd lyxal 🇦🇺 0 18 666ms 17 May 2025 863rd themoonisacheese 0 18 748ms 13 Jun 2025 863rd plcc0 0 18 35ms 6 days ago 866th kg583 🇺🇸 0 20 265ms 14 May 2025 866th jshholland 0 20 1,326ms 32 hours ago 868th plcc0 0 30 97ms 20 days ago 869th ovs-code 🇩🇪 0 37 3ms 13 Jul 2025 870th maweowo 🇩🇪 0 39 5ms 2 Oct 2025 871st ovs-code 🇩🇪 0 40 5ms 9 Jul 2025 872nd AlephSquirrel 0 43 4ms 15 Jun 2025 872nd commandz0 🇺🇸 0 43 5ms 10 Jan 2026 874th evnu 0 44 5ms 12 Oct 2025 875th NicoBliss 0 47 9ms 11 Jan 2026 876th ovs-code 🇩🇪 0 51 15ms 13 Jun 2025 877th GrayJoKing 🇦🇺 0 55 4ms 13 Jul 2025 878th KatieLG 🇬🇧 0 56 4ms 10 Jan 2026 879th chunes3 🇺🇸 0 65 7ms 13 Feb 2025 880th DialFrost 🇸🇬 0 66 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