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 Topological Sort 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 Topological Sort Trinomial Triangle Turtle Tutorial # Golfer Points Bytes Time 525th daveberlin 606 106 25 days ago 527th inverseLorentz 🇦🇺 606 131 7 Oct 2024 527th dokutan 606 131 19 Oct 2024 527th CornerMercury 🇬🇧 606 131 3 Dec 2024 527th sciencejiho 606 131 11 Feb 2025 527th Jaydosu 606 131 11 Apr 2025 532nd Seanharrs 605 117 15 Nov 2024 533rd Shanethegamer 🇺🇸 604 217 4 Oct 2024 534th Shanethegamer 🇺🇸 603 154 3 Oct 2024 535th MeWhenI 🇻🇦 602 73 2 Oct 2024 536th alemelis 602 93 1 Oct 2024 537th kaascevich 601 134 14 days ago 538th albanian-laundromat 599 159 10 days ago 539th roguh 🇬🇹 598 117 13 Oct 2024 540th MeWhenI 🇻🇦 597 98 1 Oct 2024 541st Mabeloid 🇳🇴 597 133 2 Oct 2024 541st Emutis 🇱🇹 597 133 4 Feb 2025 543rd dokutan 597 159 19 Oct 2024 544th ravnskjaer 🇩🇰 597 195 20 Dec 2024 545th dokutan 596 117 3 Oct 2024 546th SirBogman 🇺🇸 591 64 11 days ago 547th arcpolaris 590 120 28 Jan 2025 548th tatzyr 🇯🇵 588 81 23 Dec 2024 549th bac0id 588 119 10 Jan 2025 550th RaBa21 🇭🇺 588 135 4 days ago 551st luca1339 588 198 4 Nov 2024 552nd DialFrost 🇸🇬 585 67 25 Jan 2025 553rd sciencedjinn 584 136 8 Nov 2024 553rd ihatethefrench 584 136 4 Jan 2025 555th dokutan 584 174 21 Feb 2025 556th olleicua 🇺🇸 581 82 18 Oct 2024 557th Trip-kun 580 136 5 Oct 2024 558th kurkale6ka 580 137 16 Oct 2024 558th 4ndyJ 🇬🇧 580 137 14 Nov 2024 560th Jacob385 576 202 2 Oct 2024 561st MeWhenI 🇻🇦 576 331 2 Oct 2024 562nd 823126 573 112 13 Nov 2024 562nd dokutan 573 112 22 Jun 2025 564th KatieLG 🇬🇧 572 99 1 Oct 2024 565th scpchicken 🇵🇼 571 139 6 Oct 2024 566th emgordon154 568 44 1 Oct 2024 567th NanduBC 567 140 1 Oct 2024 567th Mikey-Beep 🇬🇧 567 140 7 Oct 2024 567th jmerle 🇳🇱 567 140 10 Jan 2025 567th RobertHoeh 567 140 3 Mar 2025 567th smilesformiles3 567 140 12 Jun 2025 567th artem-aramma 567 140 18 Jun 2025 573rd MeWhenI 🇻🇦 567 164 6 Oct 2024 574th FranklinJiaChen 563 141 2 Oct 2024 575th KatieLG 🇬🇧 561 85 12 Jan 2025 576th brimstonetrader 559 142 17 Oct 2024 576th snoozingnewt 🇺🇸 559 142 31 Mar 2025 576th codewrite 🇬🇧 559 142 5 May 2025 576th RobGLambert 559 142 8 Jun 2025 580th aliakseikalosha 557 127 10 Oct 2024 581st GeneralFabian 555 143 9 Dec 2024 581st CutSandstone 555 143 30 Jan 2025 581st kistlerf 🇨🇭 555 143 19 May 2025 584th MeWhenI 🇻🇦 554 290 2 Oct 2024 585th madex 🇩🇪 553 116 1 Oct 2024 586th JDiLenarda 🇫🇷 553 165 1 Oct 2024 587th hiichbindermax 552 144 2 Oct 2024 587th mathisfun271 552 144 14 Oct 2024 587th bob-th 552 144 22 Oct 2024 590th edsrzf 🇳🇿 551 135 27 Feb 2025 591st msbranicky 550 185 20 Jan 2025 592nd KatieLG 🇬🇧 549 120 1 Oct 2024 593rd JunkIce 548 145 3 Dec 2024 593rd Flekay 🇩🇪 548 145 12 days ago 595th mousetail 🇳🇱 547 94 3 Oct 2024 596th mousetail 🇳🇱 547 128 3 Oct 2024 597th emgordon154 546 52 3 Nov 2024 598th zakariamouhid 544 118 1 Oct 2024 599th croc54 544 146 15 Dec 2024 600th xyangst 543 171 1 Oct 2024 Prev 526–600 of 720 Next