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 Dragon Curve 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 Dragon Curve 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 881st estomagordo 🇳🇱 348 186 11ms 15 Jul 2025 882nd RobGLambert 344 273 200ms 8 Jun 2025 883rd Ernest1338 341 275 276ms 26 Oct 2024 884th noahhorlacher 338 191 12ms 7 Dec 2024 885th Inbarw100 333 207 2ms 19 days ago 886th jusaka 331 216 415ms 8 days ago 887th jusaka 325 150 12ms 7 days ago 888th JOrE20 316 389 56ms 4 Dec 2025 889th snoozingnewt 🇨🇦 305 200 4ms 2 Nov 2025 890th KatieLG 🇬🇧 300 290 2,515ms 1 Oct 2025 891st gautambp 297 218 11ms 24 Jun 2025 892nd jusaka 289 275 2ms 8 days ago 893rd kasarino 287 240 2ms 8 Feb 2026 894th KatieLG 🇬🇧 286 241 2ms 1 Oct 2025 895th Zhenyu-Bo 284 228 11ms 30 Jul 2025 896th fantaize 284 330 204ms 10 Mar 2026 897th EthanJantz 281 230 12ms 5 Sep 2025 898th ReterikHub 281 310 215ms 17 Jan 2025 899th Mikey-Beep 🇬🇧 280 344 17ms 4 days ago 900th jusaka 276 234 87ms 8 days ago 901st jusaka 275 243 2,802ms 8 days ago 902nd jusaka 275 435 327ms 8 days ago 903rd RobertBurs 273 237 11ms 22 Sep 2025 904th MeWhenI 🇻🇦 273 407 119ms 6 Oct 2024 905th jusaka 273 425 52ms 7 days ago 906th TJK-S 268 241 12ms 25 Oct 2025 906th NoneTheFewer 268 241 11ms 25 Dec 2025 908th jusaka 261 205 10ms 7 days ago 909th kasarino 260 373 44ms 8 Feb 2026 910th jusaka 255 271 3ms 8 days ago 911th te-chnical 251 258 222ms 4 May 2025 912th jusaka 250 336 374ms 8 days ago 913th jusaka 243 421 3ms 8 days ago 914th jusaka 242 507 29ms 8 days ago 915th jusaka 239 309 200ms 8 days ago 916th jusaka 238 183 2ms 7 days ago 917th jusaka 234 414 4ms 7 days ago 918th jusaka 233 388 86ms 8 days ago 919th jusaka 230 309 4ms 7 days ago 920th jusaka 227 361 120ms 8 days ago 921st jusaka 224 254 1,528ms 8 days ago 922nd arebbsba 218 296 10ms 9 Jan 2025 923rd kasarino 216 299 11ms 8 Feb 2026 924th jusaka 216 446 23ms 7 days ago 925th jusaka 213 225 37ms 8 days ago 926th jusaka 211 390 177ms 8 days ago 927th jusaka 208 280 162ms 7 days ago 928th jusaka 207 189 34ms 7 days ago 929th Msleizak 🇫🇷 207 226 241ms 19 May 2025 930th benanlam 202 320 12ms 21 Dec 2025 931st jusaka 199 556 29ms 8 days ago 932nd jusaka 199 575 41ms 7 days ago 933rd jusaka 194 467 1,507ms 8 days ago 934th jusaka 192 488 201ms 8 days ago 935th jusaka 188 286 81ms 7 days ago 936th jusaka 187 250 235ms 7 days ago 937th jusaka 186 449 7ms 7 days ago 938th jusaka 185 329 5ms 7 days ago 939th jusaka 185 366 6ms 8 days ago 940th jusaka 184 307 244ms 8 days ago 941st jusaka 182 528 16ms 7 days ago 942nd jusaka 180 387 121ms 8 days ago 943rd jusaka 177 365 10ms 8 days ago 944th jusaka 172 337 853ms 8 days ago 945th jusaka 172 450 111ms 8 days ago 946th jusaka 170 512 1,477ms 8 days ago 947th jusaka 169 985 1,260ms 8 days ago 948th jusaka 168 415 3ms 7 days ago 949th jusaka 161 246 3ms 8 days ago 950th jusaka 156 244 140ms 7 days ago 951st theEsteemed 154 606 407ms 20 Jan 2026 952nd jusaka 146 744 44ms 8 days ago 953rd jusaka 141 568 7ms 8 days ago 954th jusaka 131 1,469 14ms 7 days ago 955th AidanWalter 120 540 11ms 1 Jan 2025 956th vkptimon 120 776 422ms 9 Jul 2025 957th jusaka 116 643 7ms 7 days ago 958th bignamehyp 97 667 11ms 14 Nov 2024 959th dokutan 60 2,474 128ms 18 Aug 2025 960th iczelia 🇩🇪 52 2,045 4ms 14 Oct 2025 First Prev 881–960 of 1,004 Next Last