QR Decoder in Python 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 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 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 Calendar 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 Multitap Input NFA Simulator 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 Arturo Befunge BQN CJam CoffeeScript Egel 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 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 Arturo Befunge BQN CJam CoffeeScript Egel 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 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 Calendar 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 Multitap Input NFA Simulator 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 1st JayXon 🇺🇸 1,000 93 23ms 6 May 2023 2nd nwellnhof 🇩🇪 979 95 29ms 24 Jan 2022 3rd btnlq 959 97 10ms 19 Sep 2021 4th Lydxn 🇨🇦 939 99 15ms 18 Sep 2021 5th pardouin 🇫🇷 921 101 23ms 12 Jul 2024 6th hallvabo 🇳🇴 886 105 24ms 31 Dec 2023 7th Steffan153 🇫🇮 877 106 16ms 30 Jul 2024 8th GolfingSuccess 🇬🇷 869 107 16ms 18 Sep 2021 9th SirBogman 🇺🇸 861 108 25ms 31 Jan 2024 9th sean-niemann 🇺🇸 861 108 16ms 9 Mar 2025 11th Irratix 🇳🇱 830 112 21ms 7 May 2022 12th kg583 🇺🇸 823 113 16ms 22 Oct 2023 12th lifthrasiir 🇰🇷 823 113 23ms 16 Nov 2024 14th duckyluuk 🇳🇱 802 116 18ms 29 Aug 2024 15th CornerMercury 🇬🇧 769 121 16ms 6 days ago 16th emgordon154 756 123 15ms 12 Apr 2025 17th neel11235813 750 124 19ms 5 Nov 2023 18th snoozingnewt 🇨🇦 744 125 15ms 40 hours ago 19th orthoplex 🇨🇽 732 127 16ms 26 Oct 2021 19th ndren 732 127 26ms 22 Nov 2023 21st annaproxy 721 129 10ms 8 Jun 2022 22nd Artemis21 🇬🇧 710 131 16ms 10 Jan 2025 23rd MeWhenI 🇻🇦 705 132 10ms 22 Oct 2021 24th TFeld00 🇩🇰 699 133 16ms 19 May 2022 24th anter69 🇭🇺 699 133 16ms 7 Jul 2025 26th DialFrost 🇸🇬 684 136 17ms 23 Feb 2024 26th KatieLG 🇬🇧 684 136 15ms 14 Sep 2024 28th ovs-code 🇩🇪 650 143 10ms 6 Jul 2025 29th dokutan 633 147 16ms 10 Sep 2025 30th rucin93 🇵🇱 620 150 16ms 31 May 2025 30th Babafaba 620 150 18ms 29 Oct 2025 32nd qpwoeirut 612 152 16ms 5 Oct 2025 33rd RaBa21 🇭🇺 608 153 16ms 31 Jul 2025 34th wh3n3v3r 🇨🇿 592 157 17ms 14 Nov 2024 35th SB-945 589 158 10ms 14 Mar 2024 35th robin-scragg 589 158 17ms 27 Aug 2025 37th albanian-laundromat 581 160 16ms 27 Jun 2025 38th 5cw 🇺🇸 567 164 9ms 8 May 2024 39th FlorianCassayre 🇫🇷 564 165 10ms 21 Oct 2023 39th JOrE20 🇺🇸 564 165 10ms 3 days ago 41st AlephSquirrel 560 166 12ms 10 Jun 2023 41st bricknellj 560 166 16ms 3 Apr 2025 43rd lynn 557 167 10ms 13 Feb 2023 44th Seek64 🇩🇪 547 170 10ms 10 days ago 45th ryyyn 🇺🇸 544 171 16ms 11 days ago 46th edsrzf 🇳🇿 522 178 26ms 4 Oct 2025 47th prplz 🇦🇺 520 179 9ms 13 Jan 2024 48th jared-hughes 517 180 16ms 9 Apr 2022 49th inventshah 489 190 16ms 12 Nov 2022 49th stefangimmillaro 489 190 24ms 8 Aug 2023 51st yzhs 🇩🇪 482 193 10ms 4 Jun 2022 52nd yuchuehw 479 194 17ms 6 Jan 2024 53rd nullie 470 198 9ms 14 Jun 2022 54th jakobkordez 🇸🇮 454 205 17ms 30 Oct 2022 55th CatsAreFluffy 449 207 17ms 17 Feb 2024 56th StefanHabel 🇨🇦 447 208 11ms 8 Apr 2024 57th OllieBoyne 🇬🇧 441 211 10ms 19 Aug 2022 58th InigoK 🇺🇸 435 214 16ms 22 Sep 2025 58th blaztoma 🇱🇹 435 214 16ms 19 days ago 60th mathisfun271 433 215 9ms 12 Feb 2024 61st andrewjc2000 431 216 27ms 15 May 2025 62nd BREMAUCY 🇫🇷 421 221 16ms 22 Aug 2025 63rd guilhem-roy 🇫🇷 410 227 11ms 3 Mar 2022 64th scpchicken 🇵🇼 406 229 19ms 13 Oct 2023 65th stu303 399 233 10ms 20 Jul 2022 66th davecame 394 236 16ms 19 Mar 2024 67th m42km 391 238 18ms 12 Nov 2023 68th CaedenHarper 🇨🇦 388 240 11ms 10 Aug 2025 69th commandblockguy 🇺🇸 384 242 10ms 27 Sep 2023 70th alemelis 380 245 16ms 27 Aug 2024 71st janbehrens 🇩🇪 377 247 10ms 4 Dec 2024 72nd cros107 🇦🇺 365 255 10ms 28 Jan 2024 73rd CedricGebistorf 362 257 16ms 3 Mar 2022 74th te-chnical 358 260 22ms 19 days ago 75th MarcMush 🇫🇷 356 261 16ms 14 Jan 2024 1–75 of 111 Next Last
