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 Knight 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 Knight 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 526th Europe2048 611 130 2 Oct 2024 526th nstearns96 🇬🇧 611 130 2 Oct 2024 526th rollershutter 611 130 10 Jan 2025 526th Stockoh 🇫🇷 611 130 4 Jul 2025 530th bac0id 608 141 10 Jan 2025 531st MeWhenI 🇻🇦 607 111 2 Oct 2024 532nd inverseLorentz 🇦🇺 607 131 7 Oct 2024 532nd dokutan 607 131 19 Oct 2024 532nd CornerMercury 🇬🇧 607 131 3 Dec 2024 532nd sciencejiho 607 131 11 Feb 2025 532nd Jaydosu 607 131 11 Apr 2025 537th HumanoidCPU 606 106 7 Mar 2025 537th daveberlin 606 106 27 Jun 2025 539th emgordon154 606 156 13 Dec 2024 540th Seanharrs 605 117 15 Nov 2024 541st Shanethegamer 🇺🇸 604 217 4 Oct 2024 542nd Shanethegamer 🇺🇸 603 154 3 Oct 2024 543rd MeWhenI 🇻🇦 602 73 2 Oct 2024 544th alemelis 602 93 1 Oct 2024 545th kaascevich 601 134 26 days ago 546th albanian-laundromat 599 159 23 days ago 547th dokutan 598 117 3 Oct 2024 547th roguh 🇬🇹 598 117 13 Oct 2024 549th Mabeloid 🇳🇴 598 133 2 Oct 2024 549th Emutis 🇱🇹 598 133 4 Feb 2025 551st ravnskjaer 🇩🇰 598 195 20 Dec 2024 552nd MeWhenI 🇻🇦 597 98 1 Oct 2024 553rd dokutan 595 159 19 Oct 2024 554th SirBogman 🇺🇸 591 64 24 days ago 555th arcpolaris 590 120 28 Jan 2025 556th RaBa21 🇭🇺 589 135 17 days ago 557th luca1339 589 198 4 Nov 2024 558th tatzyr 🇯🇵 588 81 23 Dec 2024 559th bac0id 588 119 10 Jan 2025 560th DialFrost 🇸🇬 585 67 25 Jan 2025 561st sciencedjinn 584 136 8 Nov 2024 561st ihatethefrench 584 136 4 Jan 2025 563rd dokutan 584 174 21 Feb 2025 564th olleicua 🇺🇸 581 82 18 Oct 2024 565th Trip-kun 580 136 5 Oct 2024 566th kurkale6ka 580 137 16 Oct 2024 566th 4ndyJ 🇬🇧 580 137 14 Nov 2024 568th Jacob385 577 202 2 Oct 2024 569th MeWhenI 🇻🇦 576 331 2 Oct 2024 570th 823126 573 112 13 Nov 2024 570th dokutan 573 112 22 Jun 2025 572nd KatieLG 🇬🇧 572 99 1 Oct 2024 573rd scpchicken 🇵🇼 572 139 6 Oct 2024 574th emgordon154 568 44 1 Oct 2024 575th NanduBC 568 140 1 Oct 2024 575th Mikey-Beep 🇬🇧 568 140 7 Oct 2024 575th jmerle 🇳🇱 568 140 10 Jan 2025 575th RobertHoeh 568 140 3 Mar 2025 575th smilesformiles3 568 140 12 Jun 2025 575th artem-aramma 568 140 18 Jun 2025 581st MeWhenI 🇻🇦 567 164 6 Oct 2024 582nd FranklinJiaChen 564 141 2 Oct 2024 583rd KatieLG 🇬🇧 561 85 12 Jan 2025 584th brimstonetrader 560 142 17 Oct 2024 584th snoozingnewt 🇺🇸 560 142 31 Mar 2025 584th codewrite 🇬🇧 560 142 5 May 2025 584th RobGLambert 560 142 8 Jun 2025 588th aliakseikalosha 557 127 10 Oct 2024 589th GeneralFabian 556 143 9 Dec 2024 589th CutSandstone 556 143 30 Jan 2025 589th kistlerf 🇨🇭 556 143 19 May 2025 592nd madex 🇩🇪 554 116 1 Oct 2024 593rd MeWhenI 🇻🇦 554 290 2 Oct 2024 594th JDiLenarda 🇫🇷 553 165 1 Oct 2024 595th hiichbindermax 552 144 2 Oct 2024 595th mathisfun271 552 144 14 Oct 2024 595th bob-th 552 144 22 Oct 2024 598th edsrzf 🇳🇿 551 135 27 Feb 2025 599th KatieLG 🇬🇧 550 120 1 Oct 2024 600th msbranicky 550 185 20 Jan 2025 Prev 526–600 of 732 Next