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 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 Bytes Time 526th dokutan 597 159 19 Oct 2024 527th dokutan 596 117 3 Oct 2024 528th ravnskjaer 🇩🇰 595 195 20 Dec 2024 529th arcpolaris 590 120 28 Jan 2025 530th tatzyr 🇯🇵 588 81 23 Dec 2024 531st edsrzf 🇳🇿 588 113 26 Oct 2024 532nd bac0id 588 119 10 Jan 2025 533rd luca1339 586 198 4 Nov 2024 534th DialFrost 🇸🇬 585 67 25 Jan 2025 535th sciencedjinn 584 136 8 Nov 2024 535th ihatethefrench 584 136 4 Jan 2025 537th dokutan 584 174 21 Feb 2025 538th olleicua 🇺🇸 581 82 18 Oct 2024 539th Trip-kun 580 136 5 Oct 2024 540th kurkale6ka 579 137 16 Oct 2024 540th 4ndyJ 🇬🇧 579 137 14 Nov 2024 542nd MeWhenI 🇻🇦 576 331 2 Oct 2024 543rd BREMAUCY 🇫🇷 575 138 2 Oct 2024 544th Jacob385 575 202 2 Oct 2024 545th 823126 573 112 13 Nov 2024 545th dokutan 573 112 8 days ago 547th KatieLG 🇬🇧 572 99 1 Oct 2024 548th scpchicken 🇵🇼 571 139 6 Oct 2024 549th emgordon154 568 44 1 Oct 2024 550th NanduBC 567 140 1 Oct 2024 550th Mikey-Beep 🇬🇧 567 140 7 Oct 2024 550th jmerle 🇳🇱 567 140 10 Jan 2025 550th RobertHoeh 567 140 3 Mar 2025 550th smilesformiles3 567 140 18 days ago 550th artem-aramma 567 140 12 days ago 556th MeWhenI 🇻🇦 567 164 6 Oct 2024 557th FranklinJiaChen 563 141 2 Oct 2024 558th KatieLG 🇬🇧 561 85 12 Jan 2025 559th brimstonetrader 559 142 17 Oct 2024 559th snoozingnewt 🇺🇸 559 142 31 Mar 2025 559th codewrite 🇬🇧 559 142 5 May 2025 559th RobGLambert 559 142 22 days ago 563rd aliakseikalosha 557 127 10 Oct 2024 564th GeneralFabian 555 143 9 Dec 2024 564th CutSandstone 555 143 30 Jan 2025 564th kistlerf 🇨🇭 555 143 19 May 2025 567th MeWhenI 🇻🇦 554 290 2 Oct 2024 568th madex 🇩🇪 553 116 1 Oct 2024 569th JDiLenarda 🇫🇷 553 165 1 Oct 2024 570th edsrzf 🇳🇿 551 135 27 Feb 2025 571st hiichbindermax 551 144 2 Oct 2024 571st mathisfun271 551 144 14 Oct 2024 571st bob-th 551 144 22 Oct 2024 574th msbranicky 550 185 20 Jan 2025 575th KatieLG 🇬🇧 548 120 1 Oct 2024 576th mousetail 🇳🇱 547 94 3 Oct 2024 577th JunkIce 547 145 3 Dec 2024 578th emgordon154 546 52 3 Nov 2024 579th mousetail 🇳🇱 546 128 3 Oct 2024 580th zakariamouhid 544 118 1 Oct 2024 581st croc54 544 146 15 Dec 2024 582nd xyangst 543 171 1 Oct 2024 583rd najs91 540 131 15 Oct 2024 583rd bac0id 540 131 9 Jan 2025 585th PyryL 🇫🇮 540 147 1 Mar 2025 586th eranws 539 119 23 Dec 2024 587th dokutan 539 122 19 Oct 2024 588th Sciman101 536 147 26 Mar 2025 589th mbittner20 536 148 13 Oct 2024 590th msbranicky 531 175 13 Dec 2024 591st deancureton 530 121 30 Dec 2024 592nd FlorianCassayre 🇫🇷 529 150 1 Oct 2024 592nd jameswmccarty 529 150 5 Oct 2024 592nd yousefalizadeh 529 150 23 Oct 2024 592nd feherd 529 150 31 Oct 2024 592nd RaBa21 529 150 4 May 2025 592nd TheZwierzLF 🇵🇱 529 150 17 May 2025 598th janAkali 🇷🇺 529 167 8 Oct 2024 599th msbranicky 527 126 9 Jan 2025 600th galloj 🇨🇿 522 112 4 Oct 2024 Prev 526–600 of 697 Next