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 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 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 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 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 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 Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 798th brochmann 🇸🇪 425 152 10ms 12 Oct 2025 802nd JOrE20 424 136 1,020ms 7 Dec 2025 803rd MeWhenI 🇻🇦 424 143 6ms 2 Oct 2024 804th denisfouchard 422 153 10ms 21 Aug 2025 805th osNiko 🇧🇷 420 154 9ms 21 Aug 2025 806th celiendonze 🇨🇭 417 155 10ms 17 Oct 2025 806th aksyristos 417 155 10ms 12 days ago 808th Arkadios200 417 196 101ms 21 Oct 2025 809th Shotokhan 414 156 10ms 21 Sep 2025 810th lhulinsky 412 157 10ms 21 Oct 2024 811th snoozingnewt 🇨🇦 411 267 29ms 18 Dec 2025 812th ellis-rix 409 158 10ms 9 Dec 2024 813th webmiche 407 159 11ms 3 Nov 2025 814th Mabeloid 🇳🇴 405 159 9ms 12 Oct 2024 815th CheeseCake628 🇳🇴 404 160 104ms 5 Nov 2024 816th snoozingnewt 🇨🇦 404 223 96ms 2 Nov 2025 817th pres-abhisheksinha 401 161 10ms 8 Oct 2024 818th aksyristos 400 172 2ms 23 Nov 2025 819th ibixina 399 162 11ms 13 Oct 2024 819th TheAtrossian 399 162 11ms 5 Jan 2025 821st Ralac07 🇦🇺 398 162 11ms 3 Oct 2024 822nd Maximizer02 396 201 12ms 1 Oct 2024 823rd Vaekor 392 165 11ms 15 Dec 2024 824th snoozingnewt 🇨🇦 392 276 40ms 6 Dec 2025 825th dieggsy 389 247 18ms 10 Oct 2024 826th fischfood 385 176 5ms 22 Oct 2024 827th JOrE20 385 191 169ms 27 Jan 2026 828th ehulinsky 🇺🇸 384 158 5ms 2 Apr 2025 829th JesseNoEyes 🇺🇸 382 169 11ms 1 Oct 2024 830th CheeseCake628 🇳🇴 381 151 521ms 18 Oct 2025 831st zyc-2024 🇨🇳 380 170 10ms 5 Oct 2024 832nd ComputerKWasTaken 🇺🇸 378 171 10ms 14 Oct 2024 833rd KatieLG 🇬🇧 375 218 110ms 21 Nov 2025 834th RobGLambert 375 232 1,366ms 8 Jun 2025 835th navier-1 374 173 10ms 22 Sep 2025 836th c0d3-4-F00d 🇩🇪 374 184 2ms 9 Jan 2025 837th RedzGoose 🇦🇺 371 187 114ms 2 Oct 2024 838th P1nk-P0nk 369 215 3ms 18 Oct 2024 839th clayboll99 367 176 10ms 10 Jul 2025 840th muser-logiccpu 🇺🇦 365 177 18ms 9 Aug 2025 841st snoozingnewt 🇨🇦 364 313 40ms 2 Nov 2025 842nd OSYCh314 🇦🇺 363 178 10ms 2 Nov 2024 843rd denkyuu1 361 156 603ms 11 days ago 844th snoozingnewt 🇨🇦 360 267 13ms 2 Nov 2025 845th calum12345 359 180 10ms 26 Mar 2025 846th zt14427 355 182 11ms 27 Dec 2024 847th The-Wolfson 355 230 102ms 16 Dec 2024 848th IoLimmer 353 183 10ms 10 Oct 2024 849th sciencejiho 349 197 2ms 11 Feb 2025 850th estomagordo 🇳🇱 348 186 10ms 15 Jul 2025 851st RobGLambert 342 273 200ms 8 Jun 2025 852nd Ernest1338 340 275 303ms 26 Oct 2024 853rd noahhorlacher 337 191 10ms 7 Dec 2024 854th JOrE20 314 389 56ms 4 Dec 2025 855th snoozingnewt 🇨🇦 303 200 4ms 2 Nov 2025 856th KatieLG 🇬🇧 300 290 2,545ms 1 Oct 2025 857th gautambp 297 218 11ms 24 Jun 2025 858th kasarino 287 240 2ms 8 Feb 2026 859th KatieLG 🇬🇧 286 241 2ms 1 Oct 2025 860th Zhenyu-Bo 284 228 11ms 30 Jul 2025 861st fantaize 283 330 198ms 11 days ago 862nd EthanJantz 281 230 11ms 5 Sep 2025 863rd ReterikHub 280 310 206ms 17 Jan 2025 864th RobertBurs 273 237 10ms 22 Sep 2025 865th Mikey-Beep 🇬🇧 273 349 16ms 12 Aug 2025 866th MeWhenI 🇻🇦 272 407 119ms 6 Oct 2024 867th TJK-S 268 241 11ms 25 Oct 2025 867th NoneTheFewer 268 241 11ms 25 Dec 2025 869th kasarino 258 373 44ms 8 Feb 2026 870th te-chnical 251 258 219ms 4 May 2025 871st arebbsba 218 296 11ms 9 Jan 2025 872nd kasarino 216 299 11ms 8 Feb 2026 873rd Msleizak 🇫🇷 206 226 280ms 19 May 2025 874th benanlam 202 320 10ms 21 Dec 2025 875th theEsteemed 154 606 472ms 20 Jan 2026 876th AidanWalter 120 540 10ms 1 Jan 2025 877th vkptimon 120 776 422ms 9 Jul 2025 878th bignamehyp 97 667 10ms 14 Nov 2024 879th dokutan 60 2,474 116ms 18 Aug 2025 880th iczelia 🇩🇪 52 2,045 4ms 14 Oct 2025 First Prev 801–880 of 910 Next Last