Card Number Validation in all languages in bytes. 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 Topological Sort 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 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 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 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 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 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 Bytes Time 601st mousetail 🇳🇱 547 94 3 Oct 2024 602nd mousetail 🇳🇱 547 128 3 Oct 2024 603rd emgordon154 546 52 3 Nov 2024 604th zakariamouhid 544 118 1 Oct 2024 605th croc54 544 146 15 Dec 2024 606th xyangst 543 171 1 Oct 2024 607th PyryL 🇫🇮 541 147 1 Mar 2025 608th eranws 540 119 23 Dec 2024 609th dokutan 540 122 19 Oct 2024 610th najs91 540 131 15 Oct 2024 610th bac0id 540 131 9 Jan 2025 612th mbittner20 537 148 13 Oct 2024 613th Sciman101 536 147 26 Mar 2025 614th psaban 533 149 38 hours ago 615th deancureton 531 121 30 Dec 2024 616th msbranicky 531 175 13 Dec 2024 617th FlorianCassayre 🇫🇷 530 150 1 Oct 2024 617th jameswmccarty 530 150 5 Oct 2024 617th yousefalizadeh 530 150 23 Oct 2024 617th feherd 530 150 31 Oct 2024 617th TheZwierzLF 🇵🇱 530 150 17 May 2025 622nd msbranicky 527 126 9 Jan 2025 623rd adamnielson42 🇺🇸 523 152 6 Oct 2024 623rd voidgloom 523 152 22 Oct 2024 625th galloj 🇨🇿 522 112 4 Oct 2024 626th xyangst 519 153 1 Oct 2024 627th sidok 514 109 13 Nov 2024 628th cdesodt 513 155 16 Oct 2024 629th nephila-nacrea 🇬🇧 509 77 2 Oct 2024 630th dokutan 509 143 19 Oct 2024 631st KatieLG 🇬🇧 509 146 2 Oct 2024 632nd dokutan 507 126 22 Jun 2025 633rd Chinay-Domitrix 🇺🇸 507 131 30 Mar 2025 634th msbranicky 507 138 3 Oct 2024 635th KatieLG 🇬🇧 506 140 1 Oct 2024 636th lhulinsky 506 157 21 Oct 2024 637th ThatAlo 503 158 9 Dec 2024 638th albanian-laundromat 499 88 2 Jul 2025 639th MeWhenI 🇻🇦 499 149 4 Oct 2024 640th CheeseCake628 🇳🇴 497 160 5 Nov 2024 640th osNiko 🇧🇷 497 160 2 days ago 642nd janAkali 🇷🇺 497 167 8 Oct 2024 643rd jlangvand 496 141 15 Oct 2024 643rd HumanoidCPU 496 141 7 Mar 2025 645th Mabeloid 🇳🇴 495 133 2 Oct 2024 646th pres-abhisheksinha 494 161 8 Oct 2024 647th ibixina 491 162 13 Oct 2024 647th TheAtrossian 491 162 5 Jan 2025 649th TheRealOhead 🇺🇸 490 131 1 Oct 2024 650th HumanoidCPU 488 145 5 Oct 2024 651st JunkIce 484 136 3 Dec 2024 652nd h-hh-hhh 🇺🇦 484 177 2 Nov 2024 653rd Mabeloid 🇳🇴 483 145 2 Oct 2024 654th Vaekor 482 165 15 Dec 2024 654th mossiegoat 482 165 16 days ago 656th snoozingnewt 🇺🇸 481 137 27 Jan 2025 657th alphafalfa 477 92 8 Nov 2024 658th KatieLG 🇬🇧 476 108 13 Oct 2024 659th h-hh-hhh 🇺🇦 476 147 2 Nov 2024 660th mitzal 476 180 9 Feb 2025 661st MiffOttah 472 150 6 Oct 2024 662nd Maximizer02 471 201 1 Oct 2024 663rd JesseNoEyes 🇺🇸 470 169 1 Oct 2024 664th ejini6969 467 102 14 Jun 2025 665th zyc-2024 🇨🇳 467 170 5 Oct 2024 666th ComputerKWasTaken 🇺🇸 465 171 14 Oct 2024 667th Yewzir 🇧🇪 460 171 26 Dec 2024 668th madex 🇩🇪 458 104 2 Oct 2024 669th clayboll99 452 176 22 days ago 670th dokutan 451 63 26 Nov 2024 671st IISResetMe 449 104 27 Mar 2025 672nd varhammer 🇷🇺 448 223 23 Feb 2025 673rd OSYCh314 🇦🇺 446 178 2 Nov 2024 674th dokutan 445 109 19 Oct 2024 675th grey0ut 444 105 11 Jan 2025 Prev 601–675 of 730 Next