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 800th TheZwierzLF 🇵🇱 434 149 11ms 24 Nov 2025 800th RodAlc24 🇪🇸 434 149 17ms 22 Feb 2026 803rd dokutan 433 130 289ms 17 Oct 2024 804th Mabeloid 🇳🇴 433 133 538ms 2 Oct 2024 805th KatieLG 🇬🇧 433 183 2ms 2 Oct 2025 806th KatieLG 🇬🇧 431 108 6ms 13 Oct 2024 807th snoozingnewt 🇨🇦 431 111 34ms 2 Nov 2025 808th jameswmccarty 431 150 10ms 5 Oct 2024 808th yousefalizadeh 431 150 10ms 23 Oct 2024 808th feherd 431 150 11ms 31 Oct 2024 808th kadamkaustubh 431 150 10ms 8 Nov 2025 812th varhammer 431 223 11ms 23 Feb 2025 813th adamnielson42 🇺🇸 425 152 10ms 6 Oct 2024 813th voidgloom 425 152 10ms 22 Oct 2024 813th omero-san 425 152 10ms 22 Sep 2025 813th brochmann 🇸🇪 425 152 10ms 12 Oct 2025 817th JOrE20 424 136 1,075ms 7 Dec 2025 818th MeWhenI 🇻🇦 424 143 6ms 2 Oct 2024 819th jusaka 423 136 516ms 2 days ago 820th denisfouchard 423 153 10ms 21 Aug 2025 821st osNiko 🇧🇷 420 154 9ms 21 Aug 2025 822nd celiendonze 🇨🇭 417 155 10ms 17 Oct 2025 823rd Arkadios200 417 196 105ms 21 Oct 2025 824th Shotokhan 414 156 10ms 21 Sep 2025 825th lhulinsky 412 157 10ms 21 Oct 2024 826th snoozingnewt 🇨🇦 411 267 29ms 18 Dec 2025 827th ellis-rix 409 158 10ms 9 Dec 2024 828th webmiche 407 159 11ms 3 Nov 2025 829th Mabeloid 🇳🇴 405 159 9ms 12 Oct 2024 830th CheeseCake628 🇳🇴 404 160 104ms 5 Nov 2024 831st snoozingnewt 🇨🇦 404 223 96ms 2 Nov 2025 832nd pres-abhisheksinha 402 161 10ms 8 Oct 2024 833rd aksyristos 401 172 2ms 23 Nov 2025 834th ibixina 399 162 11ms 13 Oct 2024 834th TheAtrossian 399 162 11ms 5 Jan 2025 836th Ralac07 🇦🇺 398 162 11ms 3 Oct 2024 837th Maximizer02 396 201 12ms 1 Oct 2024 838th Vaekor 392 165 11ms 15 Dec 2024 839th snoozingnewt 🇨🇦 392 276 40ms 6 Dec 2025 840th dieggsy 389 247 18ms 10 Oct 2024 841st fischfood 385 176 5ms 22 Oct 2024 842nd JOrE20 385 191 169ms 27 Jan 2026 843rd ehulinsky 🇺🇸 384 158 5ms 2 Apr 2025 844th JesseNoEyes 🇺🇸 383 169 11ms 1 Oct 2024 845th CheeseCake628 🇳🇴 381 151 521ms 18 Oct 2025 846th zyc-2024 🇨🇳 380 170 10ms 5 Oct 2024 847th vang1ong7ang 379 247 197ms 2 days ago 848th ComputerKWasTaken 🇺🇸 378 171 10ms 14 Oct 2024 849th c0d3-4-F00d 🇩🇪 375 184 2ms 9 Jan 2025 850th KatieLG 🇬🇧 375 218 114ms 21 Nov 2025 851st RobGLambert 375 232 1,388ms 8 Jun 2025 852nd navier-1 374 173 10ms 22 Sep 2025 853rd RedzGoose 🇦🇺 371 187 114ms 2 Oct 2024 854th P1nk-P0nk 369 215 3ms 18 Oct 2024 855th clayboll99 367 176 10ms 10 Jul 2025 856th muser-logiccpu 🇺🇦 365 177 18ms 9 Aug 2025 857th snoozingnewt 🇨🇦 364 313 40ms 2 Nov 2025 858th OSYCh314 🇦🇺 363 178 10ms 2 Nov 2024 859th snoozingnewt 🇨🇦 360 267 13ms 2 Nov 2025 860th calum12345 359 180 10ms 26 Mar 2025 861st zt14427 355 182 11ms 27 Dec 2024 862nd The-Wolfson 355 230 110ms 16 Dec 2024 863rd IoLimmer 353 183 10ms 10 Oct 2024 864th sciencejiho 350 197 2ms 11 Feb 2025 865th estomagordo 🇳🇱 348 186 10ms 15 Jul 2025 866th RobGLambert 343 273 198ms 8 Jun 2025 867th Ernest1338 341 275 300ms 26 Oct 2024 868th noahhorlacher 338 191 10ms 7 Dec 2024 869th Inbarw100 333 207 2ms 14 hours ago 870th ComradeSquirrel 323 200 11ms 4 days ago 871st JOrE20 314 389 56ms 4 Dec 2025 872nd snoozingnewt 🇨🇦 303 200 4ms 2 Nov 2025 873rd KatieLG 🇬🇧 300 290 2,477ms 1 Oct 2025 874th gautambp 297 218 11ms 24 Jun 2025 875th kasarino 287 240 2ms 8 Feb 2026 876th KatieLG 🇬🇧 286 241 2ms 1 Oct 2025 877th Zhenyu-Bo 284 228 11ms 30 Jul 2025 878th fantaize 284 330 201ms 25 days ago 879th EthanJantz 281 230 11ms 5 Sep 2025 880th ReterikHub 280 310 209ms 17 Jan 2025 First Prev 801–880 of 927 Next Last