The Calendar hole will go live in approximately 8 days. Why not try and solve it ahead of time?
All holes in Lua 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 Holes Points Bytes Submitted 401st troutser 1 761 88 9 Jun 2021 401st Drew-j-Smith 1 761 88 11 Apr 2022 401st Matto58 1 761 88 8 Nov 2024 404th strogor 1 760 96 17 Sep 2025 405th Chesium 2 758 1,080 6 Aug 2020 406th bbakersmith 1 753 89 13 Jul 2021 407th cipharius 1 751 177 20 Jan 2021 408th iczelia 🇩🇪 1 750 88 15 Oct 2025 409th intUnderflow 1 739 92 13 May 2018 410th SnowballSH 1 738 61 28 Jan 2021 411th zadobyte 1 736 91 16 Jan 2021 412th UBKorkut 2 735 2,022 10 Mar 2021 413th jbyuki 1 731 238 28 Aug 2020 414th RustemB 🇷🇺 2 731 1,082 21 May 2020 415th volpi-m 🇫🇷 2 729 2,503 31 Aug 2020 416th Simon3995 🇳🇱 1 728 92 10 Jun 2020 416th josiahdbarbieri 1 728 92 16 Mar 2023 418th Xzyaihni 1 726 329 16 Jan 2024 419th SpiritAxolotl 🇺🇸 1 716 102 21 Mar 2024 420th Poggicek 1 714 77 23 Aug 2021 421st abailey2020 🇺🇸 1 713 94 27 Dec 2020 422nd nemulilonala 1 705 95 13 Dec 2024 423rd Beariish 1 703 158 27 Mar 2025 424th taikonaut001 1 700 416 1 May 2021 425th juntuu 1 698 63 25 Mar 2019 426th Dr3wand 1 698 96 26 Oct 2023 427th neihousaigaai 1 692 65 11 Apr 2021 427th Dominoscompute 1 692 65 18 Jul 2022 429th h3ra993huskp 🇯🇵 1 691 97 13 Oct 2025 430th Trip-kun 1 691 165 9 Oct 2024 431st K4rakara 1 683 350 11 Dec 2020 432nd GWStuart 2 678 1,145 15 Sep 2023 433rd Sora1248 🇩🇪 1 677 65 19 Feb 2023 434th elisherer 🇮🇱 1 677 99 7 Apr 2019 434th aliakseikalosha 1 677 99 15 Oct 2024 436th sm1lko 1 672 64 14 Dec 2022 436th arthvr9 1 672 64 23 Oct 2024 438th zpiatt 1 672 67 31 Aug 2023 438th logalex8369 🇺🇸 1 672 67 4 days ago 440th louisbosqui 1 670 100 29 Dec 2020 441st TaserTheFox 🇺🇸 2 665 2,022 26 May 2023 442nd wowjeeez 1 663 83 23 Aug 2021 443rd Xrymz 1 657 102 5 Apr 2019 443rd Kyrremann 1 657 102 15 Jan 2020 445th 20kdc 1 652 198 13 Oct 2021 446th aazuspan 1 647 68 3 May 2022 447th Wurlitzer 1 644 104 12 Feb 2018 448th sech1p 🇵🇱 1 642 67 19 Apr 2021 449th 1231234md5 🇨🇳 1 638 69 11 Dec 2023 450th Blockyheadman 1 638 105 7 Nov 2025 451st andrew3600 1 634 71 20 Aug 2018 451st villfa 1 634 71 26 Apr 2019 451st leon-w 1 634 71 9 Mar 2020 451st furokku 1 634 71 12 Feb 2021 451st enbyte 1 634 71 24 May 2021 451st EthanGrant1 1 634 71 21 Apr 2022 451st shellbertt 🇨🇦 1 634 71 26 Sep 2022 451st weliveinhell 🇭🇹 1 634 71 1 Oct 2023 459th dillon-duncando 1 632 68 30 Nov 2021 460th britishben 1 632 106 29 Nov 2018 460th copoer 1 632 106 28 Feb 2023 460th TheCod-r 🇦🇶 1 632 106 21 Jun 2023 463rd jspa2 1 626 107 4 Nov 2022 464th DaleNaci 1 615 109 3 Aug 2018 465th elgcodes 1 609 110 17 Jun 2021 466th ArturLukianov 1 604 111 16 Dec 2020 466th Feniske 🇫🇷 1 604 111 10 Oct 2022 468th matthudgins 1 602 113 28 Mar 2019 469th Seanharrs 1 598 112 14 Sep 2022 470th jojo259 1 596 114 1 Dec 2021 471st Thorinori 1 596 753 25 Mar 2024 472nd Smetalo 1 595 74 25 Aug 2022 472nd tik25 1 595 74 28 Mar 2024 474th hrubymar10 1 593 113 20 Feb 2024 475th orifu 1 591 93 24 Feb 2021 476th varhammer 🇷🇺 1 584 77 31 Jan 2022 476th funnsam 🇭🇰 1 584 77 10 Jun 2023 478th jamespeilunli 1 583 115 4 Jul 2022 479th nat-418 1 578 116 26 Oct 2022 480th Scupake 1 578 187 27 Jun 2024 First Prev 401–480 of 603 Next Last