The Calendar hole will go live in approximately 13 days. Why not try and solve it ahead of time?
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 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 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 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 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 161st rucin93 🇵🇱 733 133 9ms 19 Jan 2025 162nd CLOStrophobic 🇮🇹 731 203 8ms 6 Mar 2025 163rd emgordon154 729 123 15ms 12 Apr 2025 164th SirBogman 🇺🇸 727 99 42ms 31 Jan 2024 165th SirBogman 🇺🇸 726 145 2ms 24 Nov 2021 165th KasperKivimaeki 🇫🇮 726 145 885ms 14 Nov 2025 167th neel11235813 723 124 19ms 5 Nov 2023 168th MeWhenI 🇻🇦 723 157 1ms 28 Feb 2024 169th MeWhenI 🇻🇦 722 202 2ms 28 Feb 2024 170th MeWhenI 🇻🇦 720 239 1,735ms 22 Apr 2024 171st sean-niemann 🇺🇸 718 134 835ms 14 Aug 2025 172nd dvargas46 🇺🇸 718 185 25ms 7 Apr 2023 173rd MeWhenI 🇻🇦 718 192 97ms 28 Feb 2024 174th snoozingnewt 🇨🇦 717 125 15ms 12 days ago 175th SirBogman 🇺🇸 715 104 32ms 28 Nov 2023 176th Natanaelel 🇸🇪 708 105 34ms 20 Feb 2024 177th tatzyr 🇯🇵 706 102 33ms 11 Mar 2025 178th orthoplex 🇨🇽 706 127 16ms 26 Oct 2021 178th ndren 706 127 26ms 22 Nov 2023 180th edsrzf 🇳🇿 698 218 293ms 2 days ago 181st annaproxy 695 129 10ms 8 Jun 2022 182nd MeWhenI 🇻🇦 695 219 6ms 13 Aug 2024 183rd dcgjb 692 125 833ms 30 Jan 2024 183rd nwellnhof 🇩🇪 692 125 224ms 18 Oct 2024 185th inventshah 692 178 489ms 12 Nov 2022 186th MeWhenI 🇻🇦 692 220 264ms 28 Feb 2024 187th emgordon154 686 121 509ms 12 Apr 2025 187th snoozingnewt 🇨🇦 686 121 356ms 12 days ago 189th Artemis21 🇬🇧 685 131 16ms 10 Jan 2025 190th neel11235813 681 122 445ms 27 Mar 2024 191st MeWhenI 🇻🇦 679 132 10ms 22 Oct 2021 192nd inventshah 679 155 1ms 12 Nov 2022 193rd MeWhenI 🇻🇦 677 623 13ms 27 Jan 2025 194th DialFrost 🇸🇬 674 118 770ms 2 Jan 2024 195th TFeld00 🇩🇰 674 133 16ms 19 May 2022 195th anter69 🇭🇺 674 133 16ms 7 Jul 2025 197th helbling 🇨🇭 673 145 9ms 6 Sep 2024 197th voytxt 🇨🇿 673 145 9ms 2 Jun 2025 199th snoozingnewt 🇨🇦 673 205 91ms 19 Oct 2025 200th jacobly0 🇺🇸 672 256 1,867ms 22 Apr 2024 201st albanian-laundromat 669 147 847ms 25 Oct 2025 202nd Waffle3z 666 167 2ms 8 Apr 2022 203rd MeWhenI 🇻🇦 666 239 41ms 13 Feb 2025 204th MeWhenI 🇻🇦 665 148 717ms 15 Sep 2025 205th Steffan153 🇫🇮 664 197 333ms 11 Aug 2024 206th stefangimmillaro 664 229 257ms 18 Oct 2023 207th weliveinhell 🇭🇹 663 147 10ms 21 Jan 2024 208th saito-ta 🇯🇵 661 118 2ms 13 Feb 2023 209th primo-ppcg 🇹🇭 661 201 14ms 24 Jan 2022 210th DialFrost 🇸🇬 659 136 17ms 23 Feb 2024 210th KatieLG 🇬🇧 659 136 15ms 14 Sep 2024 212th MeWhenI 🇻🇦 659 176 1ms 28 Feb 2024 212th pardouin 🇫🇷 659 176 4,212ms 20 May 2025 214th NewDefectus 🇮🇱 658 160 2ms 28 Dec 2021 215th MeWhenI 🇻🇦 656 418 14ms 17 Nov 2021 216th dmrichwa 🇺🇸 655 149 9ms 28 Jan 2023 217th edsrzf 🇳🇿 655 243 68ms 46 hours ago 218th inventshah 652 174 1ms 12 Nov 2022 219th ovs-code 🇩🇪 649 128 432ms 6 Jul 2025 220th stefangimmillaro 648 202 437ms 6 Oct 2025 221st albanian-laundromat 643 227 4ms 6 Jul 2025 222nd MeWhenI 🇻🇦 642 152 8ms 28 Feb 2024 223rd edsrzf 🇳🇿 641 199 3ms 16 Nov 2025 224th stefangimmillaro 640 181 354ms 6 Oct 2025 225th MeWhenI 🇻🇦 639 232 6ms 40 hours ago 226th ovs-code 🇩🇪 637 113 43ms 6 Jul 2025 227th MostParsingVex 637 459 26ms 16 Jan 2025 228th MeWhenI 🇻🇦 634 131 362ms 13 Jul 2024 229th stefangimmillaro 632 255 160ms 24 Jul 2023 230th emgordon154 631 241 6ms 29 Jun 2025 231st stefangimmillaro 628 227 99ms 3 Oct 2023 232nd stefangimmillaro 628 273 160ms 17 Nov 2023 233rd ovs-code 🇩🇪 627 143 10ms 6 Jul 2025 234th lynn 627 249 1,329ms 25 Oct 2021 235th jared-hughes 618 180 2ms 9 Apr 2022 236th error256 618 223 8ms 29 Jul 2024 237th AdrienHache 🇫🇷 617 188 386ms 25 Jul 2025 238th KatieLG 🇬🇧 611 136 378ms 28 Oct 2024 239th dokutan 610 147 16ms 10 Sep 2025 240th snoozingnewt 🇨🇦 608 250 99ms 11 days ago First Prev 161–240 of 461 Next Last