The Calendar hole will go live in approximately 7 days. Why not try and solve it ahead of time?
Fibonacci in C++ 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 81st Re-Adventures 🇮🇳 972 71 61ms 8 Jan 2022 81st MichaelMBradley 🇨🇦 972 71 63ms 21 Mar 2022 81st michael-pruglo 🇺🇦 972 71 60ms 14 Jun 2022 81st solmyr2000 972 71 58ms 18 Jun 2022 81st annaproxy 972 71 54ms 8 Jan 2023 81st southpolenator 972 71 58ms 11 Jun 2023 81st 4QT0R 972 71 61ms 22 Nov 2023 81st MateuszPietrzak 🇵🇱 972 71 67ms 11 Dec 2023 81st mathisfun271 972 71 66ms 19 Feb 2024 81st zygoloid 972 71 55ms 3 Aug 2024 91st BisheruBlade888 958 72 66ms 6 Jan 2022 91st raphaelimahorn 958 72 407ms 3 Oct 2022 91st jhpaques 🇫🇷 958 72 61ms 3 Dec 2022 91st Parma-Jon 958 72 412ms 20 Mar 2023 91st ehulinsky 🇺🇸 958 72 425ms 16 Feb 2024 91st HumanoidCPU 958 72 56ms 16 Mar 2024 91st dokutan 958 72 60ms 13 Jul 2024 91st ReterikHub 958 72 58ms 7 Sep 2024 91st andrewjc2000 958 72 64ms 14 Jul 2025 91st gjoacorp 🇬🇧 958 72 58ms 3 Aug 2025 91st Andrey2001 958 72 54ms 25 Nov 2025 102nd NewDefectus 🇮🇱 945 73 411ms 4 Jan 2022 102nd Heathcorp 🇦🇺 945 73 66ms 31 Mar 2022 102nd sona-tau 945 73 60ms 26 Aug 2023 102nd Natanaelel 🇸🇪 945 73 405ms 4 Apr 2024 102nd madex 🇩🇪 945 73 66ms 9 Jul 2024 102nd LostSyntax21 🇬🇧 945 73 59ms 10 Sep 2024 102nd Lv0Sys 🇵🇱 945 73 58ms 31 May 2025 102nd balloffur 945 73 59ms 17 days ago 110th Gosefu 932 74 62ms 29 Mar 2022 110th trist224 🇫🇷 932 74 432ms 9 Nov 2022 110th veehz 932 74 59ms 21 Feb 2023 110th ngthanhtrung23 932 74 65ms 13 Mar 2024 110th eMGeeneer 932 74 410ms 31 Jul 2024 110th Mukundan314 932 74 400ms 31 May 2025 110th CornerMercury 🇬🇧 932 74 63ms 5 days ago 117th namcartoon06 920 75 60ms 30 Jun 2023 117th Jonatan6 🇩🇰 920 75 58ms 3 Aug 2023 117th RedzGoose 🇦🇺 920 75 407ms 13 Jun 2024 117th wh3n3v3r 🇨🇿 920 75 64ms 15 Nov 2024 117th solisolu 920 75 978ms 20 Nov 2025 122nd scpchicken 🇵🇼 908 76 422ms 4 Feb 2023 122nd klixel 🇨🇦 908 76 407ms 16 Apr 2023 122nd nyoshe 908 76 410ms 24 Sep 2023 122nd dpethes 908 76 67ms 9 Jan 2024 122nd quantomjona 908 76 408ms 15 May 2025 122nd Apataras 908 76 57ms 20 Jun 2025 128th 5quiwyrm 896 77 62ms 31 Aug 2022 128th arvidjonasson 896 77 59ms 7 Jun 2025 128th peachey2k2 896 77 64ms 22 Nov 2025 131st simon-biber 885 78 62ms 5 Feb 2022 131st cmayer777 885 78 57ms 6 Jan 2023 131st rqberry 885 78 71ms 8 Mar 2023 131st speles 🇺🇦 885 78 63ms 12 Nov 2023 131st 1231234md5 🇨🇳 885 78 61ms 20 Jan 2024 131st ibrahimhanifceker 885 78 60ms 9 Aug 2024 131st tte0 885 78 60ms 9 Aug 2024 131st desecaw13 885 78 52ms 24 Jan 2025 131st blaztoma 🇱🇹 885 78 67ms 17 Aug 2025 131st matejmatik123 🇸🇰 885 78 974ms 26 Sep 2025 131st WildTooth 885 78 59ms 10 Oct 2025 142nd osmith93 873 79 60ms 12 Jun 2022 142nd Santarii 873 79 63ms 10 Jul 2022 142nd kellantech 873 79 60ms 10 Jul 2023 142nd dranjohn 873 79 69ms 11 Sep 2023 142nd madeforlosers 873 79 61ms 22 Nov 2024 142nd myirci 873 79 86ms 15 Jun 2025 148th JGDoerrer 863 80 426ms 14 Jan 2022 148th Adix-null 🇱🇹 863 80 48ms 1 Feb 2024 148th Dpxx 863 80 56ms 6 Aug 2024 148th RobertBurs 863 80 60ms 29 Sep 2025 148th Pyroan 863 80 63ms 7 days ago 153rd hjcafaroUC 852 81 61ms 25 Aug 2022 153rd nstearns96 🇬🇧 852 81 58ms 15 Dec 2022 153rd retrohun 852 81 59ms 21 Dec 2022 153rd yourlefthandman 852 81 61ms 19 Aug 2023 153rd ivan-on-github 852 81 60ms 13 Nov 2024 153rd Emutis 🇱🇹 852 81 78ms 15 Aug 2025 153rd antonkesy 852 81 68ms 2 Nov 2025 160th KatieLG 🇬🇧 841 82 999ms 4 Sep 2024 First Prev 81–160 of 314 Next Last