Card Number Validation in all languages in chars. Cheevos Holes Recent Holes Langs Medals Misc 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 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 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 Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir 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 Erlang 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 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 Erlang 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 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 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 Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 674th bob-th 448 144 12ms 22 Oct 2024 677th varhammer 🇷🇺 448 223 12ms 23 Feb 2025 678th dokutan 445 109 10ms 19 Oct 2024 679th Flekay 🇩🇪 445 145 11ms 10 Jul 2025 680th grey0ut 444 105 368ms 11 Jan 2025 681st croc54 442 146 11ms 15 Dec 2024 682nd MyXoToD 🇩🇪 440 146 10ms 26 May 2025 683rd PyryL 🇫🇮 439 147 11ms 1 Mar 2025 684th mbittner20 436 148 10ms 13 Oct 2024 685th psaban 433 149 17ms 31 Jul 2025 686th KatieLG 🇬🇧 432 183 2ms 20 days ago 687th KatieLG 🇬🇧 431 108 7ms 13 Oct 2024 688th dokutan 431 130 295ms 17 Oct 2024 689th Mabeloid 🇳🇴 431 133 549ms 2 Oct 2024 690th jameswmccarty 430 150 10ms 5 Oct 2024 690th yousefalizadeh 430 150 13ms 23 Oct 2024 690th feherd 430 150 11ms 31 Oct 2024 690th TheZwierzLF 🇵🇱 430 150 11ms 17 May 2025 694th adamnielson42 🇺🇸 425 152 10ms 6 Oct 2024 694th voidgloom 425 152 10ms 22 Oct 2024 694th omero-san 425 152 10ms 22 Sep 2025 694th brochmann 🇸🇪 425 152 12ms 10 days ago 698th denisfouchard 422 153 11ms 21 Aug 2025 699th osNiko 🇧🇷 419 154 16ms 21 Aug 2025 700th MeWhenI 🇻🇦 417 143 7ms 2 Oct 2024 701st FortuiteMan 🇫🇷 416 155 19ms 16 Oct 2024 701st celiendonze 🇨🇭 416 155 19ms 5 days ago 703rd Shotokhan 414 156 11ms 21 Sep 2025 704th Arkadios200 413 196 120ms 2 days ago 705th lhulinsky 411 157 13ms 21 Oct 2024 706th ThatAlo 409 158 12ms 9 Dec 2024 707th dieggsy 405 247 21ms 10 Oct 2024 708th Mabeloid 🇳🇴 404 159 10ms 12 Oct 2024 709th CheeseCake628 🇳🇴 403 160 98ms 5 Nov 2024 710th pres-abhisheksinha 401 161 11ms 8 Oct 2024 711th ibixina 398 162 11ms 13 Oct 2024 711th TheAtrossian 398 162 11ms 5 Jan 2025 713th Ralac07 🇦🇺 397 162 10ms 3 Oct 2024 714th Maximizer02 396 201 11ms 1 Oct 2024 715th Vaekor 391 165 12ms 15 Dec 2024 716th fischfood 383 176 4ms 22 Oct 2024 717th JesseNoEyes 🇺🇸 382 169 13ms 1 Oct 2024 718th c0d3-4-F00d 🇩🇪 381 184 2ms 9 Jan 2025 719th CheeseCake628 🇳🇴 380 151 453ms 4 days ago 720th zyc-2024 🇨🇳 380 170 10ms 5 Oct 2024 721st ehulinsky 🇺🇸 378 158 6ms 2 Apr 2025 722nd ComputerKWasTaken 🇺🇸 377 171 11ms 14 Oct 2024 723rd navier-1 373 173 10ms 22 Sep 2025 724th RobGLambert 370 232 1,004ms 8 Jun 2025 725th RedzGoose 🇦🇺 369 187 116ms 2 Oct 2024 726th clayboll99 367 176 14ms 10 Jul 2025 727th P1nk-P0nk 367 215 3ms 18 Oct 2024 728th Upload-and-View 🇺🇦 365 177 19ms 9 Aug 2025 729th OSYCh314 🇦🇺 363 178 10ms 2 Nov 2024 730th calum12345 359 180 11ms 26 Mar 2025 731st sciencejiho 356 197 2ms 11 Feb 2025 732nd zt14427 355 182 11ms 27 Dec 2024 733rd IoLimmer 353 183 16ms 10 Oct 2024 734th The-Wolfson 352 230 114ms 16 Dec 2024 735th aksyristos 351 184 17ms 15 Nov 2024 736th estomagordo 🇳🇱 347 186 10ms 15 Jul 2025 737th RobGLambert 340 273 189ms 8 Jun 2025 738th Ernest1338 338 275 279ms 26 Oct 2024 739th noahhorlacher 337 191 10ms 7 Dec 2024 740th gautambp 296 218 11ms 24 Jun 2025 741st KatieLG 🇬🇧 296 290 2,227ms 21 days ago 742nd KatieLG 🇬🇧 291 241 2ms 21 days ago 743rd Zhenyu-Bo 283 228 11ms 30 Jul 2025 744th EthanJantz 281 230 11ms 5 Sep 2025 745th ReterikHub 277 310 214ms 17 Jan 2025 746th Mikey-Beep 🇬🇧 273 349 25ms 12 Aug 2025 747th RobertBurs 272 237 10ms 22 Sep 2025 748th MeWhenI 🇻🇦 270 407 132ms 6 Oct 2024 749th TJK-S 266 243 11ms 14 days ago 750th te-chnical 250 258 202ms 4 May 2025 First Prev 676–750 of 780 Next Last