The Calendar hole will go live in approximately 13 days. Why not try and solve it ahead of time?
Foo Fizz Buzz Bar 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 rvdnieuwendijk 🇳🇱 838 78 252ms 27 Nov 2021 802nd KatieLG 🇬🇧 838 115 87ms 14 Jan 2023 803rd NewDefectus 🇮🇱 837 115 3ms 22 Nov 2021 803rd ZachClayburn 837 115 3ms 4 Aug 2022 803rd tim-trimble 837 115 2ms 4 Aug 2022 806th MeWhenI 🇻🇦 837 124 452ms 10 Oct 2022 807th zaneshaw 836 92 9ms 27 Apr 2022 807th GeorgeStechman 🇬🇧 836 92 9ms 14 May 2022 807th Heathcorp 🇦🇺 836 92 10ms 9 Jul 2022 807th zlpeak 836 92 10ms 26 Jul 2022 807th 7f-galaxii 836 92 9ms 6 Dec 2022 807th NoUselessTech 836 92 10ms 11 Dec 2022 807th A11yship 836 92 9ms 31 Oct 2023 807th lewdev 🇺🇸 836 92 11ms 28 Nov 2023 807th r-schmidtke 836 92 9ms 25 Apr 2024 807th johnkiernander 836 92 9ms 3 days ago 817th MeWhenI 🇻🇦 836 99 13ms 9 May 2024 818th Isaac-Metthez 834 78 11ms 19 Dec 2023 818th yokasuretsu 834 78 11ms 9 Jan 2025 818th JOrE20 🇺🇸 834 78 17ms 25 days ago 821st GrayJoKing 🇦🇺 834 110 372ms 21 Nov 2021 821st primo-ppcg 🇹🇭 834 110 346ms 22 Nov 2021 821st ScottHamper 834 110 345ms 17 Dec 2021 821st billings7 🇬🇧 834 110 375ms 16 Apr 2022 821st Matgc04 834 110 391ms 19 May 2023 821st BREMAUCY 🇫🇷 834 110 386ms 30 Jun 2023 821st SirBogman 🇺🇸 834 110 346ms 20 Oct 2023 821st namelessiw 834 110 382ms 4 May 2024 821st pardouin 🇫🇷 834 110 362ms 17 Aug 2024 821st juliansiebert 🇩🇪 834 110 338ms 2 Mar 2025 821st Pecanolith 834 110 404ms 23 Apr 2025 821st Adix-null 🇱🇹 834 110 416ms 9 Nov 2025 833rd Shanethegamer 🇺🇸 834 197 431ms 24 Apr 2025 834th SirBogman 🇺🇸 833 107 120ms 15 Dec 2021 835th dokutan 833 121 2ms 29 Mar 2025 835th SwordF-Official 833 121 2ms 1 Jun 2025 837th primo-ppcg 🇹🇭 833 258 224ms 30 Aug 2023 838th ArekX 832 96 6ms 11 May 2022 839th Shanethegamer 🇺🇸 832 143 85ms 14 Sep 2022 840th MeWhenI 🇻🇦 831 57 3ms 12 Jan 2022 840th aksyristos 831 57 3ms 22 Oct 2022 840th Steffan153 🇫🇮 831 57 2ms 26 Feb 2023 840th Yewzir 🇧🇪 831 57 2ms 10 Dec 2023 840th DialFrost 🇸🇬 831 57 2ms 3 Feb 2024 840th GolfinK 831 57 2ms 22 Nov 2024 840th lifthrasiir 🇰🇷 831 57 2ms 29 Nov 2024 847th SirBogman 🇺🇸 830 134 24ms 4 Oct 2023 848th Yewzir 🇧🇪 830 218 2,950ms 15 Nov 2025 849th KrausRaus 🇺🇸 829 113 99ms 17 Oct 2022 849th Yewzir 🇧🇪 829 113 97ms 3 Feb 2024 851st SirBogman 🇺🇸 828 91 1,038ms 20 Oct 2023 852nd HCRitter 🇩🇪 827 79 277ms 1 Nov 2023 852nd janbehrens 🇩🇪 827 79 272ms 28 Nov 2023 852nd Yewzir 🇧🇪 827 79 251ms 9 Apr 2024 852nd 5quiwyrm 827 79 268ms 4 Dec 2024 856th JosephAbbey 827 93 10ms 6 Apr 2022 856th nakatchi 827 93 10ms 16 Feb 2024 856th timothytomato 827 93 10ms 1 Jun 2025 859th Kloppermand 🇩🇰 827 111 387ms 29 Nov 2021 859th memiamp 🇬🇧 827 111 388ms 14 Oct 2022 861st resoNathan 827 122 2ms 2 Jul 2024 862nd tonsofpcs 827 130 39ms 18 Sep 2025 863rd gjoacorp 🇬🇧 827 144 64ms 3 Aug 2025 864th nwellnhof 🇩🇪 827 149 8ms 22 Oct 2022 865th DialFrost 🇸🇬 826 96 7ms 19 Mar 2025 866th cefqrn 826 199 464ms 20 Jan 2025 867th aibolit 825 89 746ms 6 Jun 2025 868th GrayJoKing 🇦🇺 825 108 117ms 22 Aug 2023 869th Natanaelel 🇸🇪 825 146 177ms 26 Jul 2025 870th Schmitt-Very-Cool 825 150 577ms 26 Sep 2025 871st mdznr 824 117 98ms 20 Dec 2021 871st Yewzir 🇧🇪 824 117 95ms 6 Jul 2023 871st HumanoidCPU 824 117 90ms 15 Mar 2024 874th GrayJoKing 🇦🇺 824 126 389ms 4 Mar 2022 874th aposteriorist 🇨🇦 824 126 483ms 15 Mar 2022 876th MeWhenI 🇻🇦 824 157 3ms 20 Apr 2022 877th ovs-code 🇩🇪 823 49 51ms 11 Nov 2025 878th SirBogman 🇺🇸 823 93 3ms 9 Oct 2023 879th billythekid 823 97 5ms 6 Jun 2025 880th RealAMC 🇳🇿 823 117 3ms 28 Nov 2023 First Prev 801–880 of 3,377 Next Last