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 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 Transpose Sentence 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 Hilbert Curve Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle 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 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 Groovy Harbour Hare Haxe Hush Hy iogii Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua 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 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 Groovy Harbour Hare Haxe Hush Hy iogii Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua 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 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 Transpose Sentence 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 Hilbert Curve Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial # Golfer Points Chars Time 599th jmerle 🇳🇱 460 140 10 Jan 2025 599th RobertHoeh 460 140 3 Mar 2025 599th smilesformiles3 460 140 18 days ago 599th artem-aramma 460 140 12 days ago 605th Yewzir 🇧🇪 460 171 26 Dec 2024 606th madex 🇩🇪 458 104 2 Oct 2024 607th FranklinJiaChen 457 141 2 Oct 2024 608th brimstonetrader 453 142 17 Oct 2024 608th codewrite 🇬🇧 453 142 5 May 2025 608th RobGLambert 453 142 22 days ago 611th dokutan 451 63 26 Nov 2024 612th GeneralFabian 450 143 9 Dec 2024 612th CutSandstone 450 143 30 Jan 2025 612th kistlerf 🇨🇭 450 143 19 May 2025 615th IISResetMe 447 104 27 Mar 2025 616th hiichbindermax 447 144 2 Oct 2024 616th mathisfun271 447 144 14 Oct 2024 616th bob-th 447 144 22 Oct 2024 619th dokutan 445 109 19 Oct 2024 620th grey0ut 443 105 11 Jan 2025 621st croc54 441 146 15 Dec 2024 622nd MyXoToD 🇩🇪 439 146 26 May 2025 623rd PyryL 🇫🇮 438 147 1 Mar 2025 624th mbittner20 435 148 13 Oct 2024 625th dokutan 431 130 17 Oct 2024 626th Mabeloid 🇳🇴 429 133 2 Oct 2024 627th jameswmccarty 429 150 5 Oct 2024 627th yousefalizadeh 429 150 23 Oct 2024 627th feherd 429 150 31 Oct 2024 627th RaBa21 429 150 4 May 2025 627th TheZwierzLF 🇵🇱 429 150 17 May 2025 632nd adamnielson42 🇺🇸 424 152 6 Oct 2024 632nd voidgloom 424 152 22 Oct 2024 634th dirckvdende 421 153 11 hours ago 635th dieggsy 418 247 10 Oct 2024 636th snoozingnewt 🇺🇸 417 137 27 Jan 2025 637th MeWhenI 🇻🇦 417 143 2 Oct 2024 638th cdesodt 415 155 16 Oct 2024 639th lhulinsky 410 157 21 Oct 2024 640th ThatAlo 407 158 9 Dec 2024 641st Mabeloid 🇳🇴 403 159 12 Oct 2024 642nd CheeseCake628 🇳🇴 402 160 5 Nov 2024 643rd pres-abhisheksinha 400 161 8 Oct 2024 644th ibixina 397 162 13 Oct 2024 644th TheAtrossian 397 162 5 Jan 2025 646th Ralac07 🇦🇺 396 162 3 Oct 2024 647th Vaekor 390 165 15 Dec 2024 648th fischfood 383 176 22 Oct 2024 649th JesseNoEyes 🇺🇸 381 169 1 Oct 2024 650th c0d3-4-F00d 🇩🇪 380 184 9 Jan 2025 651st zyc-2024 🇨🇳 379 170 5 Oct 2024 652nd ehulinsky 🇺🇸 378 158 2 Apr 2025 653rd ComputerKWasTaken 🇺🇸 376 171 14 Oct 2024 654th RedzGoose 🇦🇺 369 187 2 Oct 2024 655th RobGLambert 369 232 22 days ago 656th P1nk-P0nk 367 215 18 Oct 2024 657th snoozingnewt 🇺🇸 365 176 2 Oct 2024 658th OSYCh314 🇦🇺 362 178 2 Nov 2024 659th calum12345 358 180 26 Mar 2025 660th CheeseCake628 🇳🇴 357 160 19 May 2025 661st sciencejiho 355 197 11 Feb 2025 662nd zt14427 354 182 27 Dec 2024 663rd IoLimmer 352 183 10 Oct 2024 664th aksyristos 350 184 15 Nov 2024 665th The-Wolfson 348 230 16 Dec 2024 666th RobGLambert 340 273 22 days ago 667th mossiegoat 339 190 22 days ago 668th Ernest1338 338 275 26 Oct 2024 669th noahhorlacher 336 191 7 Dec 2024 670th gautambp 295 218 6 days ago 671st ReterikHub 276 310 17 Jan 2025 672nd MeWhenI 🇻🇦 270 407 6 Oct 2024 673rd te-chnical 250 258 4 May 2025 674th arebbsba 218 296 9 Jan 2025 675th Msleizak 🇫🇷 206 226 19 May 2025 Prev 601–675 of 694 Next