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 799th bob-th 449 144 11ms 22 Oct 2024 802nd dokutan 447 109 10ms 19 Oct 2024 803rd Andrey2001 447 129 549ms 1 Feb 2026 804th grey0ut 446 105 427ms 11 Jan 2025 805th cuvam 446 145 10ms 35 hours ago 806th croc54 443 146 11ms 15 Dec 2024 807th MyXoToD 🇩🇪 442 146 13ms 26 May 2025 808th Yewzir 🇧🇪 442 171 12ms 26 Dec 2024 809th PyryL 🇫🇮 440 147 11ms 1 Mar 2025 810th mbittner20 437 148 10ms 13 Oct 2024 810th YAJUE114514 437 148 10ms 12 Dec 2025 812th dokutan 434 130 304ms 17 Oct 2024 813th psaban 434 149 18ms 31 Jul 2025 813th TheZwierzLF 🇵🇱 434 149 11ms 24 Nov 2025 813th RodAlc24 🇪🇸 434 149 18ms 22 Feb 2026 816th KatieLG 🇬🇧 434 183 2ms 2 Oct 2025 817th Mabeloid 🇳🇴 433 133 572ms 2 Oct 2024 818th varhammer 433 223 12ms 23 Feb 2025 819th snoozingnewt 🇨🇦 432 111 34ms 2 Nov 2025 820th KatieLG 🇬🇧 431 108 6ms 13 Oct 2024 821st jameswmccarty 431 150 11ms 5 Oct 2024 821st yousefalizadeh 431 150 11ms 23 Oct 2024 821st feherd 431 150 10ms 31 Oct 2024 821st kadamkaustubh 431 150 11ms 8 Nov 2025 825th MeWhenI 🇻🇦 426 143 6ms 2 Oct 2024 826th jusaka 426 201 26ms 4 days ago 827th JOrE20 425 136 1,075ms 7 Dec 2025 828th adamnielson42 🇺🇸 425 152 10ms 6 Oct 2024 828th voidgloom 425 152 11ms 22 Oct 2024 828th omero-san 425 152 10ms 22 Sep 2025 828th brochmann 🇸🇪 425 152 10ms 12 Oct 2025 832nd denisfouchard 423 153 10ms 21 Aug 2025 833rd osNiko 🇧🇷 420 154 11ms 21 Aug 2025 834th scpchicken 🇵🇼 419 91 160ms 15 days ago 835th celiendonze 🇨🇭 417 155 11ms 17 Oct 2025 836th jusaka 417 369 1,679ms 4 days ago 837th Shotokhan 415 156 10ms 21 Sep 2025 838th snoozingnewt 🇨🇦 415 267 28ms 18 Dec 2025 839th lhulinsky 412 157 11ms 21 Oct 2024 840th ellis-rix 409 158 11ms 9 Dec 2024 841st webmiche 407 159 11ms 3 Nov 2025 842nd Mabeloid 🇳🇴 406 159 14ms 12 Oct 2024 843rd snoozingnewt 🇨🇦 406 223 96ms 2 Nov 2025 844th CheeseCake628 🇳🇴 404 160 108ms 5 Nov 2024 845th pres-abhisheksinha 402 161 10ms 8 Oct 2024 846th aksyristos 401 172 2ms 23 Nov 2025 847th ibixina 399 162 10ms 13 Oct 2024 847th TheAtrossian 399 162 13ms 5 Jan 2025 849th Ralac07 🇦🇺 398 162 16ms 3 Oct 2024 850th Maximizer02 398 201 12ms 1 Oct 2024 851st jusaka 396 281 154ms 3 days ago 852nd snoozingnewt 🇨🇦 395 276 40ms 6 Dec 2025 853rd Vaekor 392 165 11ms 15 Dec 2024 854th dieggsy 391 247 19ms 10 Oct 2024 855th JOrE20 387 191 157ms 27 Jan 2026 856th ehulinsky 🇺🇸 386 158 5ms 2 Apr 2025 857th fischfood 386 176 5ms 22 Oct 2024 858th JesseNoEyes 🇺🇸 383 169 10ms 1 Oct 2024 859th CheeseCake628 🇳🇴 382 151 532ms 18 Oct 2025 860th zyc-2024 🇨🇳 380 170 10ms 5 Oct 2024 861st ComputerKWasTaken 🇺🇸 378 171 11ms 14 Oct 2024 862nd KatieLG 🇬🇧 376 218 118ms 21 Nov 2025 863rd jusaka 376 258 43ms 4 days ago 864th c0d3-4-F00d 🇩🇪 375 184 2ms 9 Jan 2025 865th RobGLambert 375 232 1,395ms 8 Jun 2025 866th navier-1 374 173 10ms 22 Sep 2025 866th ComradeSquirrel 374 173 10ms 4 hours ago 868th RedzGoose 🇦🇺 373 187 121ms 2 Oct 2024 869th P1nk-P0nk 369 215 3ms 18 Oct 2024 870th clayboll99 367 176 11ms 10 Jul 2025 871st snoozingnewt 🇨🇦 366 313 40ms 2 Nov 2025 872nd muser-logiccpu 🇺🇦 365 177 18ms 9 Aug 2025 873rd OSYCh314 🇦🇺 363 178 11ms 2 Nov 2024 874th snoozingnewt 🇨🇦 362 267 13ms 2 Nov 2025 875th calum12345 359 180 11ms 26 Mar 2025 876th The-Wolfson 356 230 111ms 16 Dec 2024 877th zt14427 355 182 10ms 27 Dec 2024 878th IoLimmer 353 183 11ms 10 Oct 2024 879th sciencejiho 350 197 2ms 11 Feb 2025 880th estomagordo 🇳🇱 348 186 11ms 15 Jul 2025 First Prev 801–880 of 1,003 Next Last