The Calendar hole will go live in approximately 3 days. Why not try and solve it ahead of time?
Arrows in all languages in bytes. 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 Bytes Time Submitted 641st PhysicDev 🇫🇷 499 191 12ms 4 Oct 2022 641st FranklinJiaChen 499 191 10ms 12 Jun 2024 643rd KatieLG 🇬🇧 499 262 3ms 8 Nov 2025 644th rowboat1 497 192 14ms 11 Jun 2022 644th TaserTheFox 🇺🇸 497 192 12ms 3 Jan 2023 644th PaulMWeiser 497 192 11ms 8 Mar 2023 644th CaedenHarper 🇨🇦 497 192 13ms 18 Jan 2025 648th IanUtley 497 241 14ms 14 May 2024 649th retrohun 497 370 4ms 15 Nov 2025 650th trinityy-7 496 171 11ms 17 Jul 2023 651st CaedenHarper 🇨🇦 495 183 1,297ms 16 Oct 2025 652nd janbehrens 🇩🇪 494 138 331ms 1 Nov 2021 653rd martinnorling 🇸🇪 494 193 10ms 25 Feb 2022 653rd aazuspan 494 193 10ms 8 Aug 2022 653rd roguh 🇬🇹 494 193 11ms 22 Jan 2024 656th Maznek 493 172 12ms 14 Jun 2023 656th 4very 493 172 11ms 10 Jun 2025 658th snoozingnewt 🇨🇦 492 116 168ms 18 days ago 659th bobbysq 492 194 11ms 10 May 2023 659th cros107 🇦🇺 492 194 19ms 9 Aug 2023 659th Mikey-Beep 🇬🇧 492 194 16ms 25 Aug 2023 662nd KatieLG 🇬🇧 491 241 3ms 30 Oct 2021 663rd strout 491 303 176ms 15 Aug 2022 664th setop 489 195 11ms 18 Aug 2023 664th slimer37 489 195 10ms 22 days ago 666th varhammer 🇷🇺 488 288 9ms 13 Dec 2023 667th Pimentero 🇷🇺 487 168 7ms 10 Nov 2022 668th igmcdowell 487 174 11ms 14 Nov 2021 669th smartiel 487 196 35ms 18 Sep 2022 669th PyryL 🇫🇮 487 196 13ms 21 Aug 2024 671st ShiraJoseph 🇺🇸 485 175 12ms 7 May 2022 672nd knutae 🇳🇴 484 197 11ms 29 Oct 2021 672nd btjones0 484 197 10ms 4 Dec 2021 672nd RDShah 484 197 10ms 8 Jun 2022 672nd QuincyNash 🇺🇸 484 197 10ms 6 Dec 2022 672nd HumanoidCPU 484 197 13ms 31 Oct 2024 672nd yokasuretsu 484 197 10ms 4 Jan 2025 672nd RobertHoeh 484 197 10ms 3 Mar 2025 672nd gamk3 484 197 11ms 6 May 2025 680th iliazeus 482 176 11ms 4 Sep 2022 681st DrPrettyman 482 198 12ms 12 Jul 2023 681st jacekwladzinski 482 198 10ms 8 Oct 2025 683rd btjones0 482 282 235ms 8 Dec 2021 684th rvs314 480 143 52ms 24 Sep 2024 685th scpchicken 🇵🇼 480 283 216ms 6 Apr 2022 686th rgthree 479 177 11ms 6 Sep 2023 687th asheeri 479 199 10ms 23 Aug 2021 687th BrenSchaap 479 199 10ms 21 Oct 2021 687th scpchicken 🇵🇼 479 199 12ms 7 Mar 2022 687th thiccaxe 479 199 13ms 3 Oct 2022 687th DialFrost 🇸🇬 479 199 12ms 11 Feb 2023 687th jmerle 🇳🇱 479 199 13ms 17 Jul 2023 687th dainiak 479 199 12ms 23 Jul 2023 687th AbhilashaTandon 479 199 14ms 24 Sep 2023 687th Mabeloid 🇳🇴 479 199 10ms 7 Sep 2024 687th JunkIce 479 199 10ms 4 Oct 2024 687th Flekay 🇩🇪 479 199 11ms 10 Jul 2025 687th wuduculfre 479 199 10ms 29 Jul 2025 687th katss2 479 199 12ms 14 Aug 2025 687th Lv0Sys 🇵🇱 479 199 15ms 23 days ago 701st tailorspy 478 229 72ms 25 Aug 2024 702nd SirFireball3521 477 200 30ms 25 Jan 2023 702nd wuzekai518 477 200 10ms 28 Jun 2024 702nd kistlerf 🇨🇭 477 200 14ms 14 May 2025 705th dbkirk4211 476 178 11ms 3 May 2024 705th Salutations45 476 178 11ms 21 Dec 2024 707th tetrogem 474 179 12ms 23 Aug 2025 708th Bonjour27891 🇻🇳 474 201 11ms 4 Mar 2022 708th guilhem-roy 🇫🇷 474 201 14ms 9 May 2022 708th MaxElf999 474 201 11ms 19 Sep 2022 708th tri1212 🇻🇳 474 201 11ms 3 Jun 2024 708th cykim8811 474 201 10ms 10 Jul 2024 708th vgamula 🇺🇦 474 201 13ms 15 Jul 2025 708th Alex-Huggett 🇬🇧 474 201 10ms 14 Sep 2025 715th marcin7Cd 472 202 10ms 25 Aug 2021 715th mbittner20 472 202 11ms 22 Sep 2024 717th danielphilpottwork 471 180 11ms 16 Sep 2024 717th kpal81xd 471 180 11ms 19 Sep 2024 719th dionjw 470 203 12ms 22 Mar 2022 719th pascscha 470 203 10ms 28 Mar 2022 First Prev 641–720 of 1,278 Next Last
