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 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 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 Calendar 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 Multitap Input 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 Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight 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 Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight 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 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 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 Calendar 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 Multitap Input 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 751st denisfouchard 422 153 10ms 21 Aug 2025 752nd osNiko 🇧🇷 419 154 11ms 21 Aug 2025 753rd celiendonze 🇨🇭 417 155 11ms 17 Oct 2025 754th Arkadios200 417 196 99ms 21 Oct 2025 755th Shotokhan 414 156 9ms 21 Sep 2025 756th lhulinsky 411 157 9ms 21 Oct 2024 757th ThatAlo 409 158 10ms 9 Dec 2024 758th webmiche 406 159 10ms 3 Nov 2025 759th dieggsy 406 247 18ms 10 Oct 2024 760th Mabeloid 🇳🇴 405 159 9ms 12 Oct 2024 761st CheeseCake628 🇳🇴 404 160 102ms 5 Nov 2024 762nd snoozingnewt 🇨🇦 404 223 75ms 2 Nov 2025 763rd pres-abhisheksinha 401 161 10ms 8 Oct 2024 764th ibixina 399 162 9ms 13 Oct 2024 764th TheAtrossian 399 162 10ms 5 Jan 2025 766th aksyristos 399 172 2ms 17 days ago 767th Ralac07 🇦🇺 397 162 11ms 3 Oct 2024 768th Maximizer02 396 201 10ms 1 Oct 2024 769th snoozingnewt 🇨🇦 392 276 40ms 4 days ago 770th Vaekor 391 165 10ms 15 Dec 2024 771st ehulinsky 🇺🇸 384 158 5ms 2 Apr 2025 772nd fischfood 384 176 4ms 22 Oct 2024 773rd JesseNoEyes 🇺🇸 382 169 10ms 1 Oct 2024 774th CheeseCake628 🇳🇴 381 151 426ms 18 Oct 2025 775th zyc-2024 🇨🇳 380 170 9ms 5 Oct 2024 776th ComputerKWasTaken 🇺🇸 378 171 10ms 14 Oct 2024 777th snoozingnewt 🇨🇦 376 267 13ms 2 Nov 2025 778th KatieLG 🇬🇧 375 218 111ms 19 days ago 779th navier-1 373 173 11ms 22 Sep 2025 780th c0d3-4-F00d 🇩🇪 373 184 2ms 9 Jan 2025 781st snoozingnewt 🇨🇦 372 313 40ms 2 Nov 2025 782nd RobGLambert 371 232 948ms 8 Jun 2025 783rd RedzGoose 🇦🇺 369 187 96ms 2 Oct 2024 784th P1nk-P0nk 369 215 3ms 18 Oct 2024 785th clayboll99 367 176 10ms 10 Jul 2025 786th Upload-and-View 🇺🇦 365 177 17ms 9 Aug 2025 787th OSYCh314 🇦🇺 363 178 10ms 2 Nov 2024 788th calum12345 359 180 10ms 26 Mar 2025 789th zt14427 355 182 10ms 27 Dec 2024 790th The-Wolfson 355 230 117ms 16 Dec 2024 791st JOrE20 🇺🇸 354 208 120ms 3 days ago 792nd IoLimmer 353 183 9ms 10 Oct 2024 793rd aksyristos 351 184 16ms 15 Nov 2024 794th sciencejiho 348 197 2ms 11 Feb 2025 795th estomagordo 🇳🇱 347 186 10ms 15 Jul 2025 796th RobGLambert 342 273 333ms 8 Jun 2025 797th Ernest1338 339 275 382ms 26 Oct 2024 798th noahhorlacher 337 191 9ms 7 Dec 2024 799th JOrE20 🇺🇸 312 389 56ms 6 days ago 800th snoozingnewt 🇨🇦 303 200 3ms 2 Nov 2025 801st KatieLG 🇬🇧 297 290 1,990ms 1 Oct 2025 802nd gautambp 296 218 11ms 24 Jun 2025 803rd KatieLG 🇬🇧 284 241 2ms 1 Oct 2025 804th Zhenyu-Bo 283 228 10ms 30 Jul 2025 805th EthanJantz 281 230 10ms 5 Sep 2025 806th ReterikHub 278 310 205ms 17 Jan 2025 807th RobertBurs 273 237 10ms 22 Sep 2025 808th Mikey-Beep 🇬🇧 273 349 14ms 12 Aug 2025 809th MeWhenI 🇻🇦 271 407 119ms 6 Oct 2024 810th TJK-S 268 241 10ms 25 Oct 2025 811th te-chnical 250 258 215ms 4 May 2025 812th NoneTheFewer 245 264 11ms 44 hours ago 813th arebbsba 218 296 10ms 9 Jan 2025 814th Msleizak 🇫🇷 206 226 243ms 19 May 2025 815th AidanWalter 120 540 10ms 1 Jan 2025 816th vkptimon 120 776 415ms 9 Jul 2025 817th bignamehyp 97 667 13ms 14 Nov 2024 818th dokutan 60 2,474 119ms 18 Aug 2025 819th iczelia 🇩🇪 52 2,045 4ms 14 Oct 2025 820th lyphyser 0 15 71ms 25 May 2025 821st 2bular 0 16 69ms 22 Mar 2025 821st namelessiw 0 16 141ms 21 days ago 823rd darrenks 0 17 72ms 22 Mar 2025 824th Natanaelel 🇸🇪 0 18 77ms 23 Mar 2025 824th lyxal 🇦🇺 0 18 682ms 17 May 2025 First Prev 751–825 of 842 Next Last