The Calendar hole will go live in approximately 10 days. Why not try and solve it ahead of time?
Leyland Numbers 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 801st daisy-lau 676 99 9ms 31 Jul 2020 801st didion0 🇺🇸 676 99 9ms 7 May 2021 801st inventshah 676 99 9ms 6 May 2022 801st LukeBridges 🇬🇧 676 99 8ms 24 Oct 2022 801st madeforlosers 676 99 10ms 6 Nov 2023 801st alexsave 676 99 9ms 29 Oct 2024 801st Lv0Sys 🇵🇱 676 99 9ms 18 days ago 808th DialFrost 🇸🇬 676 118 3ms 13 Apr 2025 809th msbranicky 676 142 131ms 1 Jan 2024 810th NewDefectus 🇮🇱 676 156 2ms 23 Jun 2021 811th Yax42 🇫🇷 676 181 488ms 7 Oct 2025 812th saito-ta 🇯🇵 675 62 3ms 16 Aug 2024 813th RockOfStone 674 112 1ms 8 Nov 2021 814th jerrandolph 673 221 274ms 21 Oct 2023 814th dbut2 🇦🇺 673 221 269ms 18 Jul 2024 816th michelebastione 🇮🇹 672 90 11ms 24 Aug 2020 816th ArmaanAS 672 90 10ms 11 Mar 2021 816th cb597 672 90 9ms 23 Jul 2022 816th 0-4849 672 90 10ms 4 Nov 2022 816th namelessiw 672 90 9ms 9 Jul 2024 821st Shanethegamer 🇺🇸 672 168 99ms 17 Feb 2023 822nd SirBogman 🇺🇸 670 100 9ms 29 Nov 2021 822nd Giga-Bowser 670 100 9ms 3 Jan 2022 822nd Andrey-Plotnikov 670 100 9ms 19 Aug 2023 822nd coreynash 670 100 9ms 3 Nov 2023 822nd KatieLG 🇬🇧 670 100 9ms 5 Oct 2025 827th msbranicky 670 119 5ms 8 Aug 2023 828th msbranicky 669 86 515ms 17 Jan 2024 829th DialFrost 🇸🇬 669 105 10ms 6 Nov 2025 830th Yewzir 🇧🇪 669 183 469ms 2 Oct 2025 831st frosster 668 113 1ms 14 May 2023 832nd Alex-x90 🇺🇸 668 158 2ms 10 Dec 2024 833rd Yewzir 🇧🇪 667 91 2ms 19 Dec 2024 833rd snoozingnewt 🇨🇦 667 91 77ms 13 Oct 2025 835th Liibe 665 184 446ms 25 Sep 2025 836th GolfingSuccess 🇬🇷 665 187 94ms 8 Nov 2023 837th marcin7Cd 664 91 10ms 11 Dec 2020 837th amollberg 🇸🇪 664 91 9ms 15 Jan 2022 837th Bonjour27891 🇻🇳 664 91 9ms 4 Mar 2022 837th nstearns96 🇬🇧 664 91 17ms 29 Nov 2022 837th AlexanderFair 664 91 10ms 11 Jul 2023 837th adamnielson42 🇺🇸 664 91 9ms 22 Aug 2023 837th jhu04 664 91 9ms 18 Jan 2024 837th jacekwladzinski 664 91 9ms 4 Oct 2025 837th Andrey2001 664 91 10ms 15 days ago 846th dokutan 663 87 120ms 20 Apr 2025 847th fitzdotlol 🇺🇸 663 101 9ms 28 Mar 2022 848th pkasting 663 159 4ms 6 Sep 2020 849th Waffle3z 662 64 52ms 22 Jan 2021 850th Shanethegamer 🇺🇸 662 93 1,027ms 16 Feb 2023 851st Adelzu 661 171 352ms 21 Nov 2021 851st Matgc04 661 171 352ms 3 Jun 2024 851st postie77 661 171 400ms 14 Aug 2024 854th janbehrens 🇩🇪 659 148 484ms 26 Mar 2022 855th MeWhenI 🇻🇦 658 113 4ms 23 May 2023 856th Jesperb21 658 172 366ms 21 Nov 2021 857th mstang107 657 92 15ms 20 Dec 2023 857th zwxzwxzwx21 657 92 17ms 30 Jan 2024 857th jameswmccarty 657 92 9ms 11 Jul 2024 857th PyryL 🇫🇮 657 92 9ms 22 Aug 2024 857th JesseNoEyes 🇺🇸 657 92 9ms 17 Nov 2024 862nd GeorgeStechman 🇬🇧 656 102 9ms 15 Jun 2022 862nd ShiraJoseph 🇺🇸 656 102 9ms 21 Jul 2023 862nd acollett89 656 102 9ms 15 Jul 2025 865th nwellnhof 🇩🇪 654 64 3ms 28 Oct 2021 866th MeWhenI 🇻🇦 653 122 7ms 10 Sep 2022 867th Attero 🇸🇪 652 68 328ms 18 Oct 2020 868th Shanethegamer 🇺🇸 652 127 145ms 1 Mar 2022 869th JGDoerrer 652 183 201ms 5 Feb 2022 869th msbranicky 652 183 228ms 1 Oct 2023 871st Shanethegamer 🇺🇸 652 228 271ms 19 Apr 2022 872nd snoozingnewt 🇨🇦 651 188 432ms 13 Oct 2025 873rd adoxography 650 93 10ms 8 Oct 2020 873rd nullie 650 93 9ms 9 Jun 2022 873rd julienlamoureux78 650 93 11ms 18 Aug 2022 873rd CatsAreFluffy 650 93 10ms 21 Dec 2023 873rd Mikey-Beep 🇬🇧 650 93 10ms 2 Jun 2024 873rd Papushkado 650 93 12ms 18 Nov 2025 879th richard-oelze 🇩🇪 650 103 9ms 26 May 2021 879th Yewzir 🇧🇪 650 103 10ms 18 Apr 2023 First Prev 801–880 of 1,845 Next Last