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 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 881st astdefu 680 183 2,709ms 8 Dec 2022 882nd roavin 678 167 398ms 24 Jun 2022 882nd Yewzir 🇧🇪 678 167 346ms 9 May 2023 884th daisy-lau 677 99 9ms 31 Jul 2020 884th BBoehm 🇩🇪 677 99 9ms 18 Feb 2021 884th didion0 🇺🇸 677 99 9ms 7 May 2021 884th inventshah 677 99 9ms 6 May 2022 884th LukeBridges 🇬🇧 677 99 8ms 24 Oct 2022 884th madeforlosers 677 99 10ms 6 Nov 2023 884th alexsave 677 99 9ms 29 Oct 2024 884th Lv0Sys 🇵🇱 677 99 9ms 17 days ago 892nd DialFrost 🇸🇬 677 118 3ms 13 Apr 2025 893rd msbranicky 677 142 131ms 1 Jan 2024 894th NewDefectus 🇮🇱 677 156 2ms 23 Jun 2021 895th Yax42 🇫🇷 677 181 488ms 7 Oct 2025 896th mathwiz42 676 105 10ms 18 Aug 2020 896th PFischbeck 676 105 9ms 31 Oct 2020 896th estomagordo 🇳🇱 676 105 9ms 6 Dec 2021 896th 0dyse 676 105 13ms 12 Sep 2025 900th RockOfStone 675 112 1ms 8 Nov 2021 901st AlexDaniel 🇪🇪 673 70 161ms 17 Aug 2020 902nd Shanethegamer 🇺🇸 673 168 99ms 17 Feb 2023 903rd jerrandolph 673 221 274ms 21 Oct 2023 903rd dbut2 🇦🇺 673 221 269ms 18 Jul 2024 905th GrayJoKing 🇦🇺 671 95 142ms 14 Aug 2024 905th MeWhenI 🇻🇦 671 95 134ms 25 Oct 2024 907th msbranicky 671 119 5ms 8 Aug 2023 908th SirBogman 🇺🇸 670 100 9ms 29 Nov 2021 908th Giga-Bowser 670 100 9ms 3 Jan 2022 908th Andrey-Plotnikov 670 100 9ms 19 Aug 2023 908th coreynash 670 100 9ms 3 Nov 2023 912th DialFrost 🇸🇬 670 105 10ms 6 Nov 2025 913th artieleach 670 106 13ms 7 Feb 2021 913th martinnorling 🇸🇪 670 106 10ms 31 Jan 2022 913th dylanjones92 670 106 10ms 26 Jan 2024 916th Yewzir 🇧🇪 670 183 469ms 2 Oct 2025 917th Yewzir 🇧🇪 669 91 2ms 19 Dec 2024 918th frosster 669 113 1ms 14 May 2023 919th Liibe 666 184 446ms 25 Sep 2025 920th pkasting 665 159 4ms 6 Sep 2020 920th Alex-x90 🇺🇸 665 159 2ms 10 Dec 2024 922nd GolfingSuccess 🇬🇷 665 187 94ms 8 Nov 2023 923rd fitzdotlol 🇺🇸 664 101 9ms 28 Mar 2022 924th dostuffthatmatters 664 107 9ms 26 Jul 2020 924th guilhem-roy 🇫🇷 664 107 9ms 28 Feb 2022 924th celiendonze 🇨🇭 664 107 12ms 20 Apr 2023 924th Stockoh 🇫🇷 664 107 16ms 2 Oct 2024 928th snoozingnewt 🇨🇦 663 71 123ms 13 Oct 2025 929th Shanethegamer 🇺🇸 663 93 1,027ms 16 Feb 2023 930th Adelzu 662 171 352ms 21 Nov 2021 930th Matgc04 662 171 352ms 3 Jun 2024 930th postie77 662 171 400ms 14 Aug 2024 933rd MeWhenI 🇻🇦 660 113 4ms 23 May 2023 934th janbehrens 🇩🇪 660 148 484ms 26 Mar 2022 935th Jesperb21 658 172 366ms 21 Nov 2021 936th GeorgeStechman 🇬🇧 657 102 9ms 15 Jun 2022 936th ShiraJoseph 🇺🇸 657 102 9ms 21 Jul 2023 936th acollett89 657 102 9ms 15 Jul 2025 939th Ted-Barrett 🇦🇺 657 108 9ms 30 Sep 2021 939th vodker1 657 108 9ms 7 Mar 2022 941st MeWhenI 🇻🇦 654 122 7ms 10 Sep 2022 942nd Shanethegamer 🇺🇸 653 127 145ms 1 Mar 2022 943rd JGDoerrer 653 183 201ms 5 Feb 2022 943rd msbranicky 653 183 228ms 1 Oct 2023 945th Samuel-George-Greenberger 652 47 77ms 4 days ago 946th snoozingnewt 🇨🇦 652 188 432ms 13 Oct 2025 947th Shanethegamer 🇺🇸 652 228 271ms 19 Apr 2022 948th richard-oelze 🇩🇪 651 103 9ms 26 May 2021 949th timmickey 651 108 4ms 30 Dec 2022 950th dymowski 651 109 9ms 17 Aug 2020 950th Florian-Mt 651 109 9ms 29 Sep 2023 952nd Shanethegamer 🇺🇸 651 116 1ms 2 Nov 2022 953rd snoozingnewt 🇨🇦 650 93 84ms 13 Oct 2025 954th wuzekai518 649 184 220ms 17 Jul 2024 955th MeWhenI 🇻🇦 648 149 110ms 28 Jun 2023 956th primo-ppcg 🇹🇭 647 150 7ms 2 Oct 2020 957th jared-hughes 646 117 1ms 6 Mar 2022 957th NickTheEASDude 🇺🇸 646 117 1ms 9 May 2024 959th adoxography 645 104 9ms 8 Oct 2020 959th albanian-laundromat 645 104 14ms 4 days ago First Prev 881–960 of 1,862 Next Last