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 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 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 Mandelbrot 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 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 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 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 Mandelbrot 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 226th MeWhenI 🇻🇦 631 176 4 Sep 2024 227th annaproxy 627 207 6 May 2022 228th stefangimmillaro 623 159 20 Oct 2023 229th AdrienHache 🇫🇷 623 189 3 Jan 2025 230th StefanHabel 🇨🇦 623 208 8 Apr 2024 231st DialFrost 🇸🇬 616 180 18 Jan 2024 232nd bac0id 616 257 25 Jun 2024 233rd OllieBoyne 🇬🇧 615 211 19 Aug 2022 234th stefangimmillaro 614 195 12 Nov 2024 235th Artemis21 🇬🇧 612 212 3 Jan 2025 236th annaproxy 612 309 4 Sep 2022 237th postie77 610 193 24 Mar 2023 238th emgordon154 610 252 12 Jan 2025 239th bac0id 607 208 25 Jun 2024 240th DialFrost 🇸🇬 605 201 18 Jan 2024 241st rucin93 🇵🇱 604 196 5 Jan 2025 242nd mathisfun271 603 215 12 Feb 2024 243rd TFeld00 🇩🇰 600 216 19 May 2022 243rd andrewjc2000 600 216 19 days ago 245th weliveinhell 🇭🇹 599 203 19 Jul 2024 245th helbling 🇨🇭 599 203 6 Sep 2024 247th neel11235813 594 201 1 Apr 2024 248th ndren 592 219 22 Nov 2023 248th neel11235813 592 219 1 Apr 2024 250th MeWhenI 🇻🇦 588 272 14 Jun 2023 251st voytxt 🇨🇿 587 207 31 Jul 2024 252nd DialFrost 🇸🇬 587 221 18 Jan 2024 253rd bac0id 584 185 25 Jun 2024 254th KatieLG 🇬🇧 584 222 7 Jul 2024 255th scpchicken 🇵🇼 584 324 17 Mar 2023 256th jared-hughes 576 135 25 May 2022 257th dmrichwa 🇺🇸 576 211 17 Jun 2023 258th lynn 576 303 31 Mar 2022 259th edsrzf 🇳🇿 573 269 28 Jan 2025 260th guilhem-roy 🇫🇷 571 227 3 Mar 2022 261st antimon2 🇯🇵 569 195 8 Mar 2024 262nd scpchicken 🇵🇼 566 229 13 Oct 2023 263rd janbehrens 🇩🇪 557 218 4 Dec 2024 264th stu303 557 233 20 Jul 2022 265th davecame 550 236 19 Mar 2024 266th DialFrost 🇸🇬 548 221 29 Jan 2024 267th m42km 545 238 12 Nov 2023 268th InigoK 🇺🇸 540 240 11 Jun 2023 269th KatieLG 🇬🇧 538 222 27 Oct 2024 270th MichalMarsalek 🇨🇿 538 266 12 Oct 2023 271st commandblockguy 🇺🇸 536 242 27 Sep 2023 272nd CaedenHarper 🇨🇦 534 243 19 Jan 2025 273rd olleicua 🇺🇸 532 179 20 Feb 2025 274th bac0id 532 275 25 Jun 2024 275th alemelis 529 245 27 Aug 2024 275th CornerMercury 🇬🇧 529 245 2 Mar 2025 277th m42km 528 226 4 Feb 2024 278th dokutan 527 246 24 Feb 2025 279th retrohun 527 259 23 Nov 2022 280th janbehrens 🇩🇪 526 301 4 Dec 2024 281st FlorianCassayre 🇫🇷 525 247 21 Oct 2023 281st janbehrens 🇩🇪 525 247 4 Dec 2024 283rd CaedenHarper 🇨🇦 524 228 19 Jan 2025 284th Natanaelel 🇸🇪 520 183 18 Feb 2024 285th rucin93 🇵🇱 519 250 21 Jan 2024 286th coreynash 515 236 13 Feb 2024 287th janbehrens 🇩🇪 511 238 4 Dec 2024 288th DialFrost 🇸🇬 511 367 27 Sep 2024 289th rucin93 🇵🇱 510 234 21 Jan 2024 290th cros107 509 255 28 Jan 2024 291st CedricGebistorf 505 257 3 Mar 2022 292nd andersk 🇺🇸 504 346 1 Nov 2022 293rd uttumuttu 🇫🇮 502 242 9 Apr 2022 294th scpchicken 🇵🇼 501 224 25 Feb 2023 295th dokutan 500 239 20 Apr 2025 296th Waffle3z 500 249 18 Sep 2021 297th snoozingnewt 🇺🇸 500 284 14 Oct 2023 298th MarcMush 🇫🇷 497 261 14 Jan 2024 299th emgordon154 496 245 4 Aug 2024 300th RYNO8 495 262 4 Sep 2023 Prev 226–300 of 406 Next