The Calendar hole will go live in approximately 8 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 481st Troon 640 149 11ms 16 Dec 2024 482nd adamnielson42 🇺🇸 636 150 10ms 22 Aug 2023 482nd Anonymousellama21 636 150 11ms 7 Mar 2024 484th the-zammers 635 234 157ms 15 Oct 2023 485th KatieLG 🇬🇧 634 132 567ms 30 Sep 2025 486th mousetail 🇳🇱 633 83 3ms 13 Dec 2022 487th Natanaelel 🇸🇪 633 134 11ms 3 Sep 2021 488th snoozingnewt 🇨🇦 632 176 127ms 13 days ago 489th snoozingnewt 🇨🇦 628 141 75ms 13 days ago 490th mossprescott 627 152 11ms 18 Jan 2023 491st tobeannouncd 627 237 153ms 5 Jan 2024 492nd hemphen 626 153 472ms 30 Aug 2022 493rd edsrzf 🇳🇿 625 225 7ms 9 days ago 494th CedricGebistorf 619 154 17ms 10 Mar 2022 494th ndren 619 154 10ms 3 Aug 2025 496th janbehrens 🇩🇪 618 177 72ms 20 Nov 2022 497th djeedjay 🇳🇱 615 140 2ms 5 Sep 2021 498th msbranicky 615 155 17ms 31 Aug 2023 499th commandblockguy 🇺🇸 611 156 14ms 4 Sep 2022 499th annaproxy 611 156 11ms 29 Nov 2022 499th andrewjc2000 611 156 13ms 24 Jun 2025 502nd MeWhenI 🇻🇦 607 126 26ms 18 Nov 2023 503rd InigoK 🇺🇸 607 157 22ms 10 Jul 2023 504th BlankSpruce 604 158 13ms 31 Aug 2025 505th neihousaigaai 600 159 10ms 5 Apr 2025 506th annaproxy 599 200 14ms 29 Nov 2022 507th MWI-polygolf 597 82 50ms 6 Dec 2023 508th janbehrens 🇩🇪 597 142 11ms 17 Jun 2023 509th MWI-polygolf 597 158 5ms 7 Dec 2023 510th janbehrens 🇩🇪 597 171 584ms 24 Mar 2022 511th vishwathg 596 160 14ms 12 Oct 2023 512th emgordon154 595 199 3ms 4 Sep 2025 513th MeWhenI 🇻🇦 593 148 3ms 2 Oct 2022 514th CatsAreFluffy 592 185 56ms 30 Dec 2022 515th jgbaldwinbrown 590 146 3ms 21 Jul 2022 516th dokutan 590 180 376ms 7 Nov 2025 517th janbehrens 🇩🇪 589 139 7ms 17 Jun 2023 518th FlorianCassayre 🇫🇷 589 162 12ms 24 Sep 2023 519th h3ra993huskp 🇯🇵 589 191 797ms 23 days ago 520th Shanethegamer 🇺🇸 588 97 131ms 8 Dec 2021 521st c0d3-4-F00d 🇩🇪 586 147 2ms 5 Dec 2021 522nd commandblockguy 🇺🇸 585 143 602ms 1 Sep 2025 523rd lelbal 581 164 14ms 23 Sep 2025 524th janbehrens 🇩🇪 580 165 431ms 21 Nov 2021 525th namelessiw 578 165 23ms 15 Jan 2024 525th Just4FunCoder 578 165 11ms 18 Jun 2025 527th voytxt 🇨🇿 577 147 12ms 12 Apr 2025 528th dokutan 577 226 8ms 4 May 2024 529th Yewzir 🇧🇪 574 166 15ms 15 Feb 2024 530th elgan65536 573 237 328ms 5 Mar 2024 531st adoxography 572 120 51ms 28 Sep 2021 532nd MeWhenI 🇻🇦 571 155 4ms 13 Aug 2024 533rd kmathis22 571 197 1,393ms 18 days ago 534th ListeriaM 570 156 3ms 24 Aug 2023 535th jakobkordez 🇸🇮 568 168 34ms 28 Nov 2022 536th olleicua 🇺🇸 567 121 50ms 24 Feb 2024 537th snoozingnewt 🇨🇦 567 135 26ms 13 days ago 538th billings7 🇬🇧 567 169 414ms 21 Nov 2021 538th c0d3-4-F00d 🇩🇪 567 169 428ms 21 Nov 2021 540th jared-hughes 566 109 43ms 25 Sep 2021 541st rak1507 🇬🇧 564 169 11ms 3 Mar 2023 541st rsgray 564 169 10ms 12 Jan 2024 543rd MeWhenI 🇻🇦 564 241 188ms 17 Feb 2022 544th janbehrens 🇩🇪 562 136 12ms 29 Aug 2021 545th BalaM314 562 151 11ms 1 Mar 2025 546th OllieBoyne 🇬🇧 561 170 11ms 24 Aug 2021 546th TobyBoyne 🇬🇧 561 170 13ms 24 Aug 2021 546th Kloppermand 🇩🇰 561 170 13ms 30 Aug 2021 546th ZakkkkAttackkkk 🇵🇭 561 170 17ms 30 Jul 2023 546th Emutis 🇱🇹 561 170 11ms 4 Nov 2025 551st snoozingnewt 🇨🇦 559 122 224ms 13 days ago 552nd Indivicivet 558 171 20ms 24 Oct 2021 552nd nullie 558 171 12ms 5 Jun 2022 552nd aalec 558 171 10ms 4 May 2024 555th ian-h-chamberlain 🇺🇸 558 319 54ms 2 Nov 2025 556th duckyluuk 🇳🇱 556 187 12ms 26 days ago 557th Andrey-Plotnikov 554 153 11ms 20 Jun 2025 558th neihousaigaai 551 154 12ms 27 Dec 2021 559th logvp 551 173 52ms 1 Feb 2024 559th firegene 🇮🇪 551 173 10ms 5 Aug 2024 First Prev 481–560 of 1,271 Next Last