QR Decoder in all languages in chars. Achievements Cheevos Holes Languages Medals Miscellaneous 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 Calendar 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 Multitap Input 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 Tower of Hanoi 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 Connect Four Continued Fractions 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 Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang 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 ArkScript Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily 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 Erlang 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 ArkScript Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily 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 Calendar 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 Multitap Input 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 Tower of Hanoi 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 Connect Four Continued Fractions 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 Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 321st janbehrens 🇩🇪 465 286 18ms 13 Sep 2022 322nd yuchuehw 462 194 18ms 6 Jan 2024 323rd CaedenHarper 🇨🇦 461 330 296ms 17 Nov 2025 324th MeWhenI 🇻🇦 460 268 432ms 4 Mar 2022 325th MeWhenI 🇻🇦 459 256 64ms 28 Feb 2024 326th janbehrens 🇩🇪 456 254 411ms 4 Dec 2024 327th nullie 453 198 10ms 14 Jun 2022 328th CaedenHarper 🇨🇦 451 218 1,344ms 2 Oct 2025 329th KatieLG 🇬🇧 448 161 37ms 2 Oct 2025 330th janbehrens 🇩🇪 448 218 9ms 4 Dec 2024 331st elgan65536 🇺🇸 445 385 158ms 8 days ago 332nd CaedenHarper 🇨🇦 438 299 397ms 7 Oct 2025 333rd jakobkordez 🇸🇮 437 205 18ms 30 Oct 2022 334th janbehrens 🇩🇪 435 301 463ms 4 Dec 2024 335th CatsAreFluffy 433 207 17ms 17 Feb 2024 336th Natanaelel 🇸🇪 432 737 20ms 19 Feb 2024 337th StefanHabel 🇨🇦 431 208 10ms 8 Apr 2024 338th CaedenHarper 🇨🇦 431 269 406ms 17 Oct 2025 339th rucin93 🇵🇱 430 196 150ms 5 Jan 2025 340th MeWhenI 🇻🇦 430 480 79ms 18 Mar 2024 341st OllieBoyne 🇬🇧 425 211 10ms 19 Aug 2022 342nd InigoK 🇺🇸 419 214 18ms 22 Sep 2025 343rd mathisfun271 417 215 11ms 12 Feb 2024 344th andrewjc2000 415 216 28ms 15 May 2025 345th coreynash 414 236 10ms 13 Feb 2024 345th CaedenHarper 🇨🇦 414 236 11ms 29 Aug 2025 347th antimon2 🇯🇵 408 195 1,191ms 8 Mar 2024 348th BREMAUCY 🇫🇷 406 221 18ms 22 Aug 2025 349th uttumuttu 🇫🇮 404 242 10ms 9 Apr 2022 350th pschmid0 🇺🇸 402 287 4ms 23 Oct 2022 351st janbehrens 🇩🇪 401 307 2,491ms 20 Nov 2022 352nd guilhem-roy 🇫🇷 395 227 10ms 3 Mar 2022 353rd scpchicken 🇵🇼 392 229 17ms 13 Oct 2023 354th Waffle3z 392 249 20ms 18 Sep 2021 355th janbehrens 🇩🇪 392 314 457ms 13 Sep 2022 356th olleicua 🇺🇸 391 250 9ms 21 Feb 2024 357th stu303 385 233 9ms 20 Jul 2022 358th davecame 380 236 20ms 19 Mar 2024 359th scpchicken 🇵🇼 379 206 2ms 24 Feb 2023 360th m42km 377 238 23ms 12 Nov 2023 361st annaproxy 375 309 411ms 20 Mar 2022 362nd CaedenHarper 🇨🇦 374 240 11ms 10 Aug 2025 363rd Xzyaihni 373 459 225ms 20 Oct 2022 364th h3ra993huskp 🇯🇵 372 352 463ms 30 Nov 2025 365th commandz0 🇺🇸 371 242 11ms 27 Sep 2023 366th m42km 368 226 747ms 4 Feb 2024 367th alemelis 366 245 16ms 27 Aug 2024 368th CaedenHarper 🇨🇦 364 228 675ms 19 Jan 2025 368th commandz0 🇺🇸 364 228 610ms 1 Sep 2025 370th janbehrens 🇩🇪 363 247 10ms 4 Dec 2024 371st janbehrens 🇩🇪 362 291 2ms 13 Sep 2022 372nd Waffle3z 357 202 35ms 23 Sep 2021 373rd rucin93 🇵🇱 355 234 660ms 21 Jan 2024 374th cros107 🇦🇺 352 255 11ms 28 Jan 2024 375th c0d3-4-F00d 🇩🇪 350 301 2ms 21 Mar 2022 376th CedricGebistorf 349 257 17ms 3 Mar 2022 377th MostParsingVex 349 332 2,457ms 11 Nov 2024 378th BambooleanLogic 🇸🇪 348 281 10ms 13 Jul 2023 379th DialFrost 🇸🇬 348 367 4ms 27 Sep 2024 380th te-chnical 345 260 23ms 18 Nov 2025 381st MarcMush 🇫🇷 344 261 17ms 14 Jan 2024 382nd RYNO8 342 262 18ms 4 Sep 2023 383rd ridingqwerty 🇺🇸 336 267 16ms 14 Feb 2024 384th janbehrens 🇩🇪 335 237 633ms 4 Dec 2024 385th FortuiteMan 🇫🇷 335 268 16ms 7 Jul 2025 386th msbranicky 335 454 277ms 31 Aug 2023 387th alemelis 334 249 746ms 23 Aug 2024 388th msbranicky 334 437 2ms 27 Aug 2023 389th MeWhenI 🇻🇦 323 531 224ms 18 Mar 2024 390th msbranicky 321 361 2ms 14 Oct 2023 391st MeWhenI 🇻🇦 321 582 119ms 18 Mar 2024 392nd tomh1012 320 362 453ms 17 Dec 2025 393rd IISResetMe 318 272 306ms 14 Jun 2024 394th nemoyatpeace 318 282 18ms 12 Jan 2026 395th zakariamouhid 316 309 9ms 8 Jun 2023 396th scpchicken 🇵🇼 315 224 154ms 25 Feb 2023 397th adamnielson42 🇺🇸 314 286 15ms 29 Nov 2023 398th dokutan 310 256 646ms 20 Apr 2025 399th knutae 🇳🇴 303 296 10ms 29 Oct 2021 400th msbranicky 289 310 18ms 12 Aug 2023 First Prev 321–400 of 466 Next Last