QR Decoder 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 Hilbert Curve 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 Minesweeper 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 Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Tower of Hanoi 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 Groovy 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 Harbour Hare Haxe Hush Hy iogii Knight Luau 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 Groovy 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 Harbour Hare Haxe Hush Hy iogii Knight Luau 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 Hilbert Curve 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 Minesweeper 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 Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Tower of Hanoi Turtle Tutorial # Golfer Points Bytes Time Submitted 225th emgordon154 656 198 9ms 16 Oct 2025 227th stefangimmillaro 653 181 336ms 6 Oct 2025 228th MeWhenI 🇻🇦 652 191 2ms 28 Feb 2024 229th Salutations45 651 187 9ms 15 Oct 2025 230th stefangimmillaro 648 147 41ms 12 May 2024 231st emgordon154 648 241 6ms 29 Jun 2025 232nd duckyluuk 🇳🇱 646 185 1,333ms 23 Jun 2024 233rd MostParsingVex 646 459 28ms 16 Jan 2025 234th error256 645 329 8ms 29 Jul 2024 235th stefangimmillaro 644 227 108ms 3 Oct 2023 236th emgordon154 642 186 880ms 12 Apr 2025 237th lynn 642 249 1,387ms 25 Oct 2021 238th stefangimmillaro 642 255 176ms 24 Jul 2023 239th SirBogman 🇺🇸 640 149 38ms 31 Jan 2024 239th tatzyr 🇯🇵 640 149 34ms 10 Mar 2025 241st stefangimmillaro 639 273 158ms 17 Nov 2023 242nd orthoplex 🇨🇽 637 204 17ms 13 Oct 2021 243rd dcgjb 634 181 849ms 30 Jan 2024 244th jakobkordez 🇸🇮 634 205 20ms 30 Oct 2022 245th MeWhenI 🇻🇦 631 176 139ms 4 Sep 2024 246th AdrienHache 🇫🇷 629 188 362ms 25 Jul 2025 247th annaproxy 628 207 10ms 6 May 2022 248th stefangimmillaro 627 159 1,169ms 20 Oct 2023 249th StefanHabel 🇨🇦 625 208 12ms 8 Apr 2024 250th ryyyn 🇺🇸 622 209 16ms 2 days ago 251st DialFrost 🇸🇬 616 180 661ms 18 Jan 2024 252nd OllieBoyne 🇬🇧 616 211 11ms 19 Aug 2022 253rd annaproxy 616 309 146ms 4 Sep 2022 254th stefangimmillaro 614 195 3,461ms 12 Nov 2024 255th postie77 613 193 362ms 24 Mar 2023 256th Artemis21 🇬🇧 613 212 16ms 3 Jan 2025 257th bac0id 607 208 370ms 25 Jun 2024 258th InigoK 🇺🇸 607 214 17ms 22 Sep 2025 259th rucin93 🇵🇱 604 196 154ms 5 Jan 2025 260th mathisfun271 604 215 10ms 12 Feb 2024 260th anter69 🇭🇺 604 215 21ms 7 Jul 2025 262nd TFeld00 🇩🇰 601 216 24ms 19 May 2022 262nd andrewjc2000 601 216 29ms 15 May 2025 264th weliveinhell 🇭🇹 600 203 10ms 19 Jul 2024 264th helbling 🇨🇭 600 203 10ms 6 Sep 2024 266th neel11235813 595 201 1,219ms 1 Apr 2024 267th ndren 593 219 34ms 22 Nov 2023 267th neel11235813 593 219 22ms 1 Apr 2024 269th DialFrost 🇸🇬 591 201 4ms 18 Jan 2024 270th voytxt 🇨🇿 591 206 9ms 15 Aug 2025 271st DialFrost 🇸🇬 588 221 19ms 18 Jan 2024 271st BREMAUCY 🇫🇷 588 221 21ms 22 Aug 2025 273rd MeWhenI 🇻🇦 588 272 1,275ms 14 Jun 2023 274th scpchicken 🇵🇼 587 324 149ms 17 Mar 2023 275th KatieLG 🇬🇧 585 222 11ms 7 Jul 2024 276th bac0id 584 185 2ms 25 Jun 2024 277th dmrichwa 🇺🇸 577 211 9ms 17 Jun 2023 278th jared-hughes 576 135 40ms 25 May 2022 279th lynn 576 303 153ms 31 Mar 2022 280th guilhem-roy 🇫🇷 572 227 10ms 3 Mar 2022 281st antimon2 🇯🇵 569 195 1,274ms 8 Mar 2024 282nd bac0id 569 208 361ms 25 Jun 2024 283rd scpchicken 🇵🇼 567 229 17ms 13 Oct 2023 284th janbehrens 🇩🇪 559 218 8ms 4 Dec 2024 285th stu303 558 233 11ms 20 Jul 2022 286th CaedenHarper 🇨🇦 553 218 914ms 2 Oct 2025 287th davecame 550 236 18ms 19 Mar 2024 288th DialFrost 🇸🇬 548 221 2ms 29 Jan 2024 289th m42km 546 238 19ms 12 Nov 2023 290th CaedenHarper 🇨🇦 541 240 11ms 10 Aug 2025 291st KatieLG 🇬🇧 538 222 796ms 27 Oct 2024 292nd MichalMarsalek 🇨🇿 538 266 351ms 12 Oct 2023 293rd commandblockguy 🇺🇸 537 242 13ms 27 Sep 2023 294th dokutan 535 243 17ms 9 Sep 2025 295th olleicua 🇺🇸 532 179 41ms 20 Feb 2025 296th bac0id 532 275 115ms 25 Jun 2024 297th alemelis 530 245 18ms 27 Aug 2024 297th CornerMercury 🇬🇧 530 245 21ms 2 Mar 2025 299th m42km 529 226 1,094ms 4 Feb 2024 300th retrohun 527 259 58ms 23 Nov 2022 First Prev 226–300 of 446 Next Last