QR Decoder in all languages in chars. 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 Chars Time Submitted 226th error256 625 223 8ms 29 Jul 2024 227th AdrienHache 🇫🇷 620 188 362ms 25 Jul 2025 228th KatieLG 🇬🇧 616 136 536ms 28 Oct 2024 229th MeWhenI 🇻🇦 616 176 139ms 4 Sep 2024 230th AlephSquirrel 615 247 5ms 27 Jan 2025 231st dokutan 613 147 23ms 10 Sep 2025 232nd stefangimmillaro 613 159 1,169ms 20 Oct 2023 233rd annaproxy 609 309 146ms 4 Sep 2022 234th emgordon154 607 162 10ms 7 Aug 2024 235th postie77 604 193 362ms 24 Mar 2023 236th stefangimmillaro 602 195 2,692ms 12 Nov 2024 237th rucin93 🇵🇱 601 150 17ms 31 May 2025 238th jared-hughes 599 164 9ms 9 Apr 2022 239th bac0id 598 208 430ms 25 Jun 2024 240th MeWhenI 🇻🇦 596 147 221ms 28 Feb 2024 241st qpwoeirut 593 152 18ms 18 days ago 242nd MeWhenI 🇻🇦 590 191 2ms 28 Feb 2024 243rd Steffan153 🇫🇮 589 124 35ms 31 Jul 2024 244th RaBa21 🇭🇺 589 153 21ms 31 Jul 2025 245th NewDefectus 🇮🇱 589 167 11ms 21 Sep 2021 246th DialFrost 🇸🇬 581 201 6ms 18 Jan 2024 247th scpchicken 🇵🇼 581 324 149ms 17 Mar 2023 248th MeWhenI 🇻🇦 579 272 1,345ms 14 Jun 2023 249th KatieLG 🇬🇧 578 170 10ms 18 days ago 250th wh3n3v3r 🇨🇿 574 157 18ms 14 Nov 2024 251st bac0id 574 185 2ms 25 Jun 2024 252nd lynn 573 96 36ms 3 Apr 2023 253rd MeWhenI 🇻🇦 573 138 3ms 28 Feb 2024 254th SB-945 571 158 14ms 14 Mar 2024 254th mossiegoat 571 158 17ms 27 Aug 2025 256th dokutan 570 147 417ms 10 Sep 2025 257th lynn 569 303 179ms 31 Mar 2022 257th andersk 🇺🇸 569 303 257ms 1 Nov 2022 259th Steffan153 🇫🇮 566 148 598ms 31 Jul 2024 260th albanian-laundromat 563 160 16ms 27 Jun 2025 261st jared-hughes 560 135 40ms 25 May 2022 262nd bac0id 560 208 361ms 25 Jun 2024 263rd primo-ppcg 🇹🇭 557 131 38ms 28 Sep 2021 263rd olleicua 🇺🇸 557 131 44ms 20 Feb 2025 265th 5cw 🇺🇸 550 164 9ms 8 May 2024 266th snoozingnewt 🇺🇸 546 165 12ms 23 Sep 2023 266th FlorianCassayre 🇫🇷 546 165 11ms 21 Oct 2023 268th MeWhenI 🇻🇦 545 148 456ms 28 Feb 2024 269th AlephSquirrel 543 166 13ms 10 Jun 2023 269th bricknellj 543 166 17ms 3 Apr 2025 271st lynn 540 167 13ms 13 Feb 2023 272nd KrausRaus 🇺🇸 540 182 10ms 30 Jun 2024 273rd DialFrost 🇸🇬 538 221 2ms 29 Jan 2024 274th tayloia 🇬🇧 537 183 11ms 4 May 2023 275th ovs-code 🇩🇪 534 151 738ms 10 Mar 2024 276th lynn 531 158 706ms 17 Feb 2024 276th AlephSquirrel 531 158 465ms 12 Jan 2025 278th emgordon154 531 161 151ms 18 Oct 2024 279th MichalMarsalek 🇨🇿 529 266 398ms 12 Oct 2023 280th Salutations45 526 187 10ms 8 days ago 281st emplv 🇱🇻 524 163 149ms 28 Mar 2025 282nd bac0id 524 275 133ms 25 Jun 2024 283rd snoozingnewt 🇺🇸 521 161 560ms 25 days ago 284th retrohun 518 259 58ms 23 Nov 2022 285th Natanaelel 🇸🇪 518 363 172ms 16 Jun 2025 286th Natanaelel 🇸🇪 514 142 37ms 18 Sep 2021 287th bac0id 512 257 399ms 25 Jun 2024 288th jared-hughes 510 143 35ms 10 Sep 2022 289th edsrzf 🇳🇿 506 178 24ms 19 days ago 290th prplz 🇦🇺 504 179 10ms 13 Jan 2024 291st jared-hughes 501 180 17ms 9 Apr 2022 292nd jerrandolph 499 306 246ms 25 Sep 2025 293rd stefangimmillaro 497 147 41ms 12 May 2024 294th MeWhenI 🇻🇦 497 172 139ms 5 Jan 2025 295th Seek64 🇩🇪 493 183 33ms 17 Jun 2025 296th janbehrens 🇩🇪 490 238 7ms 4 Dec 2024 297th inventshah 474 190 18ms 12 Nov 2022 297th stefangimmillaro 474 190 24ms 8 Aug 2023 299th p-vf 🇨🇭 474 246 354ms 21 Nov 2021 300th janbehrens 🇩🇪 469 286 20ms 13 Sep 2022 First Prev 226–300 of 439 Next Last