The Calendar hole will go live in approximately 5 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 561st neihousaigaai 551 154 12ms 27 Dec 2021 562nd logvp 551 173 52ms 1 Feb 2024 562nd firegene 🇮🇪 551 173 10ms 5 Aug 2024 562nd CommandLeo 🇮🇹 551 173 12ms 26 days ago 565th janbehrens 🇩🇪 549 205 787ms 17 Jun 2023 566th fourth-bit 548 174 17ms 1 Jul 2024 567th dokutan 548 448 982ms 15 Jan 2025 568th didion0 🇺🇸 547 155 11ms 31 May 2022 569th Just4FunCoder 545 126 48ms 18 Jun 2025 570th janbehrens 🇩🇪 545 158 2ms 21 Mar 2022 571st alphafalfa 545 163 4ms 20 Nov 2024 572nd yourlefthandman 545 175 23ms 16 Aug 2023 572nd Artemis21 🇬🇧 545 175 13ms 2 Jan 2025 574th msbranicky 543 154 737ms 17 Jan 2024 575th galloj 🇨🇿 542 176 13ms 20 Aug 2022 576th revlayle 🇺🇸 541 177 511ms 6 Jun 2023 577th DrPiranoid 539 177 19ms 28 Sep 2022 577th ehulinsky 🇺🇸 539 177 13ms 10 May 2023 577th raymur 539 177 14ms 14 Jul 2025 580th jerrandolph 539 237 353ms 20 Oct 2023 581st Yewzir 🇧🇪 539 304 2,715ms 14 Nov 2025 582nd Yewzir 🇧🇪 536 156 626ms 15 Feb 2024 583rd kimbo 🇺🇸 536 238 367ms 28 Dec 2022 583rd msbranicky 536 238 341ms 31 Aug 2023 585th Irratix 🇳🇱 535 161 3ms 21 Dec 2021 586th klixel 🇨🇦 535 254 221ms 19 Jun 2023 587th olleicua 🇺🇸 533 159 11ms 13 Jan 2024 588th KatieLG 🇬🇧 533 241 110ms 8 Nov 2025 589th annaproxy 533 279 165ms 31 Dec 2022 590th Andriamanitra 🇫🇮 532 167 3ms 29 Oct 2022 591st KatieLG 🇬🇧 532 180 366ms 18 Oct 2022 592nd dcgjb 528 129 263ms 11 Jun 2024 593rd blaztoma 🇱🇹 528 130 51ms 24 Oct 2025 594th CatsAreFluffy 528 163 3ms 15 Jan 2023 595th coreynash 527 161 11ms 25 Sep 2023 596th bastienvoirin 🇫🇷 527 181 11ms 14 Sep 2021 596th adoxography 527 181 13ms 28 Sep 2021 596th myleopard 527 181 10ms 20 Jul 2022 599th Shanethegamer 🇺🇸 526 76 5ms 25 Apr 2022 600th GolfingSuccess 🇬🇷 526 159 478ms 2 Mar 2024 601st MeWhenI 🇻🇦 525 471 12ms 28 Aug 2023 602nd nstearns96 🇬🇧 524 182 11ms 22 Jan 2023 602nd joll05 🇸🇪 524 182 13ms 28 May 2023 602nd yousefalizadeh 524 182 16ms 7 Apr 2024 605th inventshah 524 351 8ms 30 Dec 2022 606th BambooleanLogic 🇸🇪 523 162 11ms 19 Oct 2023 606th helbling 🇨🇭 523 162 10ms 8 Sep 2024 606th targrik 523 162 11ms 20 Mar 2025 609th Bmrl7 521 183 11ms 29 Mar 2024 609th paiv 521 183 10ms 16 Jun 2025 611th angel-p57 🇯🇵 521 516 3ms 21 Nov 2023 612th georgehulme 518 184 13ms 5 Oct 2022 612th jeff-at-tamer-dot-codes 🇺🇸 518 184 14ms 28 Jul 2024 614th moikaturns 🇬🇧 517 164 11ms 10 Nov 2022 614th unfinishedprogram 517 164 12ms 26 Oct 2023 616th alexjurkiewicz 🇦🇺 515 185 11ms 7 Nov 2023 617th NicoAdams 513 186 10ms 25 Nov 2021 618th eMGeeneer 513 219 666ms 26 Jun 2024 619th BREMAUCY 🇫🇷 513 255 3ms 28 mins ago 620th namelessiw 510 164 701ms 5 Mar 2024 621st Kanawanagasaki 510 188 437ms 15 Sep 2022 622nd eMGeeneer 509 215 528ms 27 Jun 2024 623rd StardustGogeta 507 188 10ms 6 May 2023 623rd zbreit 🇺🇸 507 188 14ms 6 May 2023 625th ericlangedijk 🇸🇮 507 189 463ms 12 Mar 2022 626th MeWhenI 🇻🇦 507 485 12ms 28 Nov 2023 627th Haksell 🇦🇶 505 136 51ms 22 Feb 2023 628th itserasmus 505 168 11ms 25 Jan 2024 629th xiaoyiming123 505 189 13ms 24 Jul 2025 630th edsrzf 🇳🇿 502 163 6ms 14 Sep 2024 631st KatieLG 🇬🇧 502 169 11ms 13 Aug 2022 631st ToriTheChicken 502 169 11ms 30 May 2023 633rd Yewzir 🇧🇪 502 256 105ms 25 days ago 634th aaronze 🇦🇺 501 137 47ms 17 Sep 2023 635th dokutan 501 261 3ms 5 Feb 2025 636th janbehrens 🇩🇪 499 130 3ms 17 Jun 2023 637th stefangabos 🇷🇴 499 170 11ms 15 Sep 2022 637th weliveinhell 🇭🇹 499 170 11ms 2 Oct 2023 639th PhysicDev 🇫🇷 499 191 12ms 4 Oct 2022 639th FranklinJiaChen 499 191 10ms 12 Jun 2024 First Prev 561–640 of 1,276 Next Last