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 Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 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 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 ><> ALGOL 68 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 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 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 Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 801st Shotokhan 414 156 10ms 21 Sep 2025 802nd lhulinsky 412 157 10ms 21 Oct 2024 803rd snoozingnewt 🇨🇦 411 267 29ms 18 Dec 2025 804th ThatAlo 409 158 10ms 9 Dec 2024 805th webmiche 407 159 11ms 3 Nov 2025 806th Mabeloid 🇳🇴 405 159 11ms 12 Oct 2024 807th CheeseCake628 🇳🇴 404 160 104ms 5 Nov 2024 808th snoozingnewt 🇨🇦 404 223 96ms 2 Nov 2025 809th pres-abhisheksinha 401 161 10ms 8 Oct 2024 810th aksyristos 400 172 2ms 23 Nov 2025 811th ibixina 399 162 11ms 13 Oct 2024 811th TheAtrossian 399 162 11ms 5 Jan 2025 813th Ralac07 🇦🇺 398 162 11ms 3 Oct 2024 814th Maximizer02 396 201 11ms 1 Oct 2024 815th dieggsy 393 247 18ms 10 Oct 2024 816th Vaekor 392 165 11ms 15 Dec 2024 817th snoozingnewt 🇨🇦 392 276 40ms 6 Dec 2025 818th fischfood 385 176 4ms 22 Oct 2024 819th JOrE20 385 191 188ms 27 Jan 2026 820th ehulinsky 🇺🇸 384 158 5ms 2 Apr 2025 821st JesseNoEyes 🇺🇸 382 169 11ms 1 Oct 2024 822nd CheeseCake628 🇳🇴 381 151 521ms 18 Oct 2025 823rd zyc-2024 🇨🇳 380 170 10ms 5 Oct 2024 824th ComputerKWasTaken 🇺🇸 378 171 10ms 14 Oct 2024 825th KatieLG 🇬🇧 375 218 114ms 21 Nov 2025 826th RobGLambert 375 232 1,323ms 8 Jun 2025 827th navier-1 374 173 10ms 22 Sep 2025 828th c0d3-4-F00d 🇩🇪 374 184 2ms 9 Jan 2025 829th RedzGoose 🇦🇺 371 187 158ms 2 Oct 2024 830th P1nk-P0nk 369 215 3ms 18 Oct 2024 831st clayboll99 367 176 10ms 10 Jul 2025 832nd muser-logiccpu 🇺🇦 365 177 18ms 9 Aug 2025 833rd snoozingnewt 🇨🇦 364 313 40ms 2 Nov 2025 834th OSYCh314 🇦🇺 363 178 10ms 2 Nov 2024 835th snoozingnewt 🇨🇦 363 267 13ms 2 Nov 2025 836th calum12345 359 180 10ms 26 Mar 2025 837th zt14427 355 182 11ms 27 Dec 2024 838th The-Wolfson 355 230 102ms 16 Dec 2024 839th IoLimmer 353 183 10ms 10 Oct 2024 840th aksyristos 351 184 21ms 15 Nov 2024 841st sciencejiho 349 197 2ms 11 Feb 2025 842nd estomagordo 🇳🇱 348 186 10ms 15 Jul 2025 843rd RobGLambert 342 273 201ms 8 Jun 2025 844th Ernest1338 339 275 306ms 26 Oct 2024 845th noahhorlacher 337 191 9ms 7 Dec 2024 846th JOrE20 312 389 56ms 4 Dec 2025 847th snoozingnewt 🇨🇦 303 200 4ms 2 Nov 2025 848th KatieLG 🇬🇧 300 290 2,497ms 1 Oct 2025 849th gautambp 296 218 11ms 24 Jun 2025 850th kasarino 287 240 2ms 8 Feb 2026 851st KatieLG 🇬🇧 286 241 2ms 1 Oct 2025 852nd Zhenyu-Bo 283 228 11ms 30 Jul 2025 853rd EthanJantz 281 230 11ms 5 Sep 2025 854th ReterikHub 280 310 205ms 17 Jan 2025 855th RobertBurs 273 237 10ms 22 Sep 2025 856th Mikey-Beep 🇬🇧 273 349 17ms 12 Aug 2025 857th MeWhenI 🇻🇦 272 407 119ms 6 Oct 2024 858th TJK-S 268 241 11ms 25 Oct 2025 858th NoneTheFewer 268 241 11ms 25 Dec 2025 860th kasarino 258 373 44ms 8 Feb 2026 861st te-chnical 251 258 219ms 4 May 2025 862nd arebbsba 218 296 11ms 9 Jan 2025 863rd kasarino 216 299 11ms 8 Feb 2026 864th Msleizak 🇫🇷 206 226 280ms 19 May 2025 865th benanlam 202 320 10ms 21 Dec 2025 866th theEsteemed 154 606 472ms 20 Jan 2026 867th AidanWalter 120 540 10ms 1 Jan 2025 868th vkptimon 120 776 422ms 9 Jul 2025 869th bignamehyp 97 667 10ms 14 Nov 2024 870th dokutan 60 2,474 116ms 18 Aug 2025 871st iczelia 🇩🇪 52 2,045 4ms 14 Oct 2025 872nd lyphyser 0 15 33ms 25 May 2025 872nd 2bular 0 15 32ms 22 days ago 872nd Natanaelel 🇸🇪 0 15 35ms 20 days ago 875th namelessiw 0 16 141ms 19 Nov 2025 875th darrenks 🇺🇸 0 16 33ms 22 days ago 877th lyxal 🇦🇺 0 18 666ms 17 May 2025 877th themoonisacheese 0 18 748ms 13 Jun 2025 877th plcc0 0 18 35ms 22 days ago 880th kg583 🇺🇸 0 20 265ms 14 May 2025 First Prev 801–880 of 902 Next Last