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 Mabeloid 🇳🇴 597 133 2 Oct 2024 526th Emutis 🇱🇹 597 133 4 Feb 2025 528th dokutan 597 159 19 Oct 2024 529th dokutan 596 117 3 Oct 2024 530th ravnskjaer 🇩🇰 595 195 20 Dec 2024 531st arcpolaris 590 120 28 Jan 2025 532nd tatzyr 🇯🇵 588 81 23 Dec 2024 533rd edsrzf 🇳🇿 588 113 26 Oct 2024 534th bac0id 588 119 10 Jan 2025 535th luca1339 586 198 4 Nov 2024 536th DialFrost 🇸🇬 585 67 25 Jan 2025 537th sciencedjinn 584 136 8 Nov 2024 537th ihatethefrench 584 136 4 Jan 2025 539th dokutan 584 174 21 Feb 2025 540th olleicua 🇺🇸 581 82 18 Oct 2024 541st Trip-kun 580 136 5 Oct 2024 542nd kurkale6ka 580 137 16 Oct 2024 542nd 4ndyJ 🇬🇧 580 137 14 Nov 2024 544th MeWhenI 🇻🇦 576 331 2 Oct 2024 545th BREMAUCY 🇫🇷 575 138 2 Oct 2024 546th Jacob385 575 202 2 Oct 2024 547th 823126 573 112 13 Nov 2024 547th dokutan 573 112 10 days ago 549th KatieLG 🇬🇧 572 99 1 Oct 2024 550th scpchicken 🇵🇼 571 139 6 Oct 2024 551st emgordon154 568 44 1 Oct 2024 552nd NanduBC 567 140 1 Oct 2024 552nd Mikey-Beep 🇬🇧 567 140 7 Oct 2024 552nd jmerle 🇳🇱 567 140 10 Jan 2025 552nd RobertHoeh 567 140 3 Mar 2025 552nd smilesformiles3 567 140 20 days ago 552nd artem-aramma 567 140 14 days ago 558th MeWhenI 🇻🇦 567 164 6 Oct 2024 559th FranklinJiaChen 563 141 2 Oct 2024 560th KatieLG 🇬🇧 561 85 12 Jan 2025 561st brimstonetrader 559 142 17 Oct 2024 561st snoozingnewt 🇺🇸 559 142 31 Mar 2025 561st codewrite 🇬🇧 559 142 5 May 2025 561st RobGLambert 559 142 25 days ago 565th aliakseikalosha 557 127 10 Oct 2024 566th GeneralFabian 555 143 9 Dec 2024 566th CutSandstone 555 143 30 Jan 2025 566th kistlerf 🇨🇭 555 143 19 May 2025 569th MeWhenI 🇻🇦 554 290 2 Oct 2024 570th madex 🇩🇪 553 116 1 Oct 2024 571st JDiLenarda 🇫🇷 553 165 1 Oct 2024 572nd edsrzf 🇳🇿 551 135 27 Feb 2025 573rd hiichbindermax 551 144 2 Oct 2024 573rd mathisfun271 551 144 14 Oct 2024 573rd bob-th 551 144 22 Oct 2024 576th msbranicky 550 185 20 Jan 2025 577th KatieLG 🇬🇧 548 120 1 Oct 2024 578th JunkIce 548 145 3 Dec 2024 579th mousetail 🇳🇱 547 94 3 Oct 2024 580th emgordon154 546 52 3 Nov 2024 581st mousetail 🇳🇱 546 128 3 Oct 2024 582nd zakariamouhid 544 118 1 Oct 2024 583rd croc54 544 146 15 Dec 2024 584th xyangst 543 171 1 Oct 2024 585th najs91 540 131 15 Oct 2024 585th bac0id 540 131 9 Jan 2025 587th PyryL 🇫🇮 540 147 1 Mar 2025 588th eranws 539 119 23 Dec 2024 589th dokutan 539 122 19 Oct 2024 590th Sciman101 536 147 26 Mar 2025 591st mbittner20 536 148 13 Oct 2024 592nd msbranicky 531 175 13 Dec 2024 593rd deancureton 530 121 30 Dec 2024 594th FlorianCassayre 🇫🇷 529 150 1 Oct 2024 594th jameswmccarty 529 150 5 Oct 2024 594th yousefalizadeh 529 150 23 Oct 2024 594th feherd 529 150 31 Oct 2024 594th RaBa21 529 150 4 May 2025 594th TheZwierzLF 🇵🇱 529 150 17 May 2025 600th janAkali 🇷🇺 529 167 8 Oct 2024 Prev 526–600 of 700 Next