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 Vaekor 392 165 11ms 15 Dec 2024 802nd snoozingnewt 🇨🇦 392 276 40ms 6 Dec 2025 803rd fischfood 385 176 4ms 22 Oct 2024 804th JOrE20 385 191 109ms 20 days ago 805th ehulinsky 🇺🇸 384 158 5ms 2 Apr 2025 806th JesseNoEyes 🇺🇸 382 169 12ms 1 Oct 2024 807th CheeseCake628 🇳🇴 381 151 521ms 18 Oct 2025 808th zyc-2024 🇨🇳 380 170 10ms 5 Oct 2024 809th ComputerKWasTaken 🇺🇸 378 171 10ms 14 Oct 2024 810th KatieLG 🇬🇧 375 218 108ms 21 Nov 2025 811th RobGLambert 375 232 1,019ms 8 Jun 2025 812th navier-1 374 173 10ms 22 Sep 2025 813th c0d3-4-F00d 🇩🇪 374 184 2ms 9 Jan 2025 814th snoozingnewt 🇨🇦 372 313 40ms 2 Nov 2025 815th snoozingnewt 🇨🇦 370 267 13ms 2 Nov 2025 816th RedzGoose 🇦🇺 369 187 111ms 2 Oct 2024 817th P1nk-P0nk 369 215 3ms 18 Oct 2024 818th clayboll99 367 176 10ms 10 Jul 2025 819th muser-logiccpu 🇺🇦 365 177 18ms 9 Aug 2025 820th OSYCh314 🇦🇺 363 178 11ms 2 Nov 2024 821st calum12345 359 180 10ms 26 Mar 2025 822nd zt14427 355 182 11ms 27 Dec 2024 823rd The-Wolfson 355 230 100ms 16 Dec 2024 824th IoLimmer 353 183 10ms 10 Oct 2024 825th aksyristos 351 184 24ms 15 Nov 2024 826th sciencejiho 349 197 2ms 11 Feb 2025 827th estomagordo 🇳🇱 347 186 10ms 15 Jul 2025 828th RobGLambert 342 273 201ms 8 Jun 2025 829th Ernest1338 339 275 274ms 26 Oct 2024 830th noahhorlacher 337 191 11ms 7 Dec 2024 831st JOrE20 312 389 56ms 4 Dec 2025 832nd snoozingnewt 🇨🇦 303 200 4ms 2 Nov 2025 833rd KatieLG 🇬🇧 300 290 2,116ms 1 Oct 2025 834th gautambp 296 218 12ms 24 Jun 2025 835th kasarino 287 240 2ms 8 days ago 836th KatieLG 🇬🇧 286 241 2ms 1 Oct 2025 837th Zhenyu-Bo 283 228 11ms 30 Jul 2025 838th EthanJantz 281 230 11ms 5 Sep 2025 839th ReterikHub 280 310 199ms 17 Jan 2025 840th RobertBurs 273 237 10ms 22 Sep 2025 841st Mikey-Beep 🇬🇧 273 349 14ms 12 Aug 2025 842nd MeWhenI 🇻🇦 272 407 119ms 6 Oct 2024 843rd TJK-S 268 241 11ms 25 Oct 2025 843rd NoneTheFewer 268 241 11ms 25 Dec 2025 845th kasarino 258 373 45ms 8 days ago 846th te-chnical 250 258 248ms 4 May 2025 847th arebbsba 218 296 11ms 9 Jan 2025 848th kasarino 216 299 11ms 8 days ago 849th Msleizak 🇫🇷 206 226 325ms 19 May 2025 850th benanlam 202 320 11ms 21 Dec 2025 851st theEsteemed 154 606 472ms 27 days ago 852nd AidanWalter 120 540 10ms 1 Jan 2025 853rd vkptimon 120 776 422ms 9 Jul 2025 854th bignamehyp 97 667 11ms 14 Nov 2024 855th dokutan 60 2,474 116ms 18 Aug 2025 856th iczelia 🇩🇪 52 2,045 4ms 14 Oct 2025 857th lyphyser 0 15 34ms 25 May 2025 857th 2bular 0 15 31ms 2 days ago 859th namelessiw 0 16 141ms 19 Nov 2025 859th darrenks 0 16 33ms 2 days ago 861st Natanaelel 🇸🇪 0 17 31ms 2 days ago 862nd lyxal 🇦🇺 0 18 666ms 17 May 2025 862nd themoonisacheese 0 18 748ms 13 Jun 2025 862nd plcc0 0 18 34ms 2 days ago 865th kg583 🇺🇸 0 20 265ms 14 May 2025 866th plcc0 0 30 97ms 16 days ago 867th ovs-code 🇩🇪 0 37 3ms 13 Jul 2025 868th maweowo 🇩🇪 0 39 4ms 2 Oct 2025 869th ovs-code 🇩🇪 0 40 5ms 9 Jul 2025 870th AlephSquirrel 0 43 3ms 15 Jun 2025 870th commandz0 🇺🇸 0 43 5ms 10 Jan 2026 872nd evnu 0 44 5ms 12 Oct 2025 873rd NicoBliss 0 47 8ms 11 Jan 2026 874th ovs-code 🇩🇪 0 51 16ms 13 Jun 2025 875th GrayJoKing 🇦🇺 0 55 4ms 13 Jul 2025 876th KatieLG 🇬🇧 0 56 4ms 10 Jan 2026 877th chunes3 🇺🇸 0 65 7ms 13 Feb 2025 878th DialFrost 🇸🇬 0 66 11ms 4 Dec 2025 879th sean-niemann 🇺🇸 0 68 58ms 30 Apr 2025 880th dokutan 0 89 60ms 28 Jun 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