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 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 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 Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers 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 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 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 Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 301st CaedenHarper 🇨🇦 524 228 744ms 19 Jan 2025 301st commandblockguy 🇺🇸 524 228 974ms 1 Sep 2025 303rd albanian-laundromat 524 230 934ms 12 Sep 2025 304th Natanaelel 🇸🇪 524 363 172ms 16 Jun 2025 305th Natanaelel 🇸🇪 521 183 32ms 18 Feb 2024 306th rucin93 🇵🇱 520 250 21ms 21 Jan 2024 307th bac0id 519 257 399ms 25 Jun 2024 308th coreynash 516 236 10ms 13 Feb 2024 308th CaedenHarper 🇨🇦 516 236 11ms 29 Aug 2025 310th dokutan 515 232 1,083ms 9 Sep 2025 311th DialFrost 🇸🇬 511 367 4ms 27 Sep 2024 312th rucin93 🇵🇱 510 234 979ms 21 Jan 2024 313th cros107 🇦🇺 509 255 11ms 28 Jan 2024 313th RaBa21 🇭🇺 509 255 23ms 31 Jul 2025 315th jerrandolph 506 306 246ms 25 Sep 2025 316th CedricGebistorf 505 257 18ms 3 Mar 2022 317th andersk 🇺🇸 504 346 257ms 1 Nov 2022 318th uttumuttu 🇫🇮 503 242 9ms 9 Apr 2022 319th scpchicken 🇵🇼 501 224 157ms 25 Feb 2023 320th Waffle3z 500 249 2ms 18 Sep 2021 321st snoozingnewt 🇺🇸 500 284 97ms 14 Oct 2023 322nd janbehrens 🇩🇪 499 238 7ms 4 Dec 2024 323rd MarcMush 🇫🇷 498 261 17ms 14 Jan 2024 323rd blaztoma 🇱🇹 498 261 22ms 20 Sep 2025 325th emgordon154 497 245 9ms 4 Aug 2024 326th RYNO8 496 262 19ms 4 Sep 2023 327th CatsAreFluffy 494 263 22ms 17 Feb 2024 328th albanian-laundromat 494 319 3ms 16 Jul 2025 329th wh3n3v3r 🇨🇿 492 264 17ms 14 Nov 2024 330th SB-945 490 265 14ms 14 Mar 2024 331st Waffle3z 489 249 10ms 18 Sep 2021 332nd mossiegoat 488 266 17ms 27 Aug 2025 333rd olleicua 🇺🇸 487 250 9ms 21 Feb 2024 334th ridingqwerty 🇺🇸 486 267 17ms 14 Feb 2024 334th te-chnical 486 267 29ms 3 May 2025 336th albanian-laundromat 485 268 18ms 28 Jun 2025 336th FortuiteMan 🇫🇷 485 268 21ms 7 Jul 2025 338th p-vf 🇨🇭 481 246 354ms 21 Nov 2021 339th alemelis 480 249 941ms 23 Aug 2024 340th KatieLG 🇬🇧 479 254 9ms 26 Oct 2022 341st snoozingnewt 🇺🇸 478 272 18ms 23 days ago 342nd janbehrens 🇩🇪 477 286 20ms 13 Sep 2022 343rd scpchicken 🇵🇼 474 206 3ms 24 Feb 2023 344th MeWhenI 🇻🇦 473 268 489ms 4 Mar 2022 345th Waffle3z 472 202 39ms 23 Sep 2021 346th janbehrens 🇩🇪 466 254 373ms 4 Dec 2024 347th janbehrens 🇩🇪 462 240 638ms 4 Dec 2024 348th adamnielson42 🇺🇸 454 286 20ms 29 Nov 2023 349th elgan65536 451 387 177ms 10 Apr 2024 350th emgordon154 447 265 178ms 5 Jan 2025 351st CaedenHarper 🇨🇦 446 299 475ms 16 days ago 352nd janbehrens 🇩🇪 443 301 437ms 4 Dec 2024 353rd snoozingnewt 🇺🇸 441 271 800ms 11 Feb 2024 354th MeWhenI 🇻🇦 441 480 316ms 18 Mar 2024 355th CaedenHarper 🇨🇦 440 269 407ms 5 days ago 356th knutae 🇳🇴 439 296 10ms 29 Oct 2021 357th Natanaelel 🇸🇪 438 737 24ms 19 Feb 2024 358th qpwoeirut 434 299 20ms 35 hours ago 359th BambooleanLogic 🇸🇪 433 281 9ms 13 Jul 2023 360th IISResetMe 422 272 244ms 14 Jun 2024 361st msbranicky 419 310 18ms 12 Aug 2023 362nd pschmid0 🇺🇸 414 287 6ms 23 Oct 2022 363rd janbehrens 🇩🇪 411 307 2,375ms 20 Nov 2022 364th raspofabs 407 319 21ms 12 Nov 2023 365th MeWhenI 🇻🇦 406 506 6ms 19 Mar 2024 366th janbehrens 🇩🇪 404 314 457ms 13 Sep 2022 367th yzhs 🇩🇪 392 331 10ms 4 Jun 2022 368th LeeCamp 387 336 18ms 9 Dec 2021 369th msbranicky 384 311 994ms 16 Jan 2024 370th yuchuehw 384 338 17ms 5 Jan 2024 371st annaproxy 383 309 335ms 20 Mar 2022 372nd mbittner20 383 339 10ms 3 Jul 2023 373rd CatsAreFluffy 380 201 62ms 27 Jan 2023 374th Indivicivet 380 342 12ms 19 Oct 2021 375th Xzyaihni 380 459 236ms 20 Oct 2022 First Prev 301–375 of 441 Next Last