The Calendar hole will go live in approximately 13 days. Why not try and solve it ahead of time?
Fibonacci 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 831st hajimehoshi 🇯🇵 953 79 259ms 24 Sep 2022 831st Steffan153 🇫🇮 953 79 258ms 1 Oct 2022 831st kimbo 🇺🇸 953 79 276ms 27 Dec 2022 831st m-tkach 🇺🇦 953 79 252ms 14 Jun 2023 831st sean-niemann 🇺🇸 953 79 290ms 27 Jun 2023 831st ovs-code 🇩🇪 953 79 260ms 16 Aug 2023 831st snoozingnewt 🇨🇦 953 79 258ms 23 Sep 2023 831st Yewzir 🇧🇪 953 79 263ms 21 Oct 2023 831st elgan65536 953 79 256ms 23 Oct 2023 831st Betuaredead 953 79 258ms 12 Nov 2023 831st DialFrost 🇸🇬 953 79 274ms 16 Dec 2023 831st kkoenig 953 79 258ms 22 Dec 2023 831st harshit54 953 79 264ms 6 Jan 2024 831st bzijlema 🇳🇱 953 79 258ms 26 Jan 2024 831st bastatom 953 79 249ms 16 Feb 2024 831st neel11235813 953 79 264ms 26 Mar 2024 831st Grrisly 953 79 275ms 27 Mar 2024 831st jipsong 🇩🇪 953 79 274ms 13 Jun 2024 831st dbut2 🇦🇺 953 79 263ms 16 Jul 2024 831st edsrzf 🇳🇿 953 79 260ms 2 Sep 2024 831st pardouin 🇫🇷 953 79 270ms 4 Sep 2024 831st duckyluuk 🇳🇱 953 79 259ms 19 Sep 2024 831st b-illy 🇬🇧 953 79 265ms 29 Sep 2024 831st CaedenHarper 🇨🇦 953 79 285ms 22 Oct 2024 831st emgordon154 953 79 254ms 11 Nov 2024 831st error256 953 79 309ms 16 Dec 2024 831st martindotexe 🇳🇴 953 79 266ms 22 Apr 2025 831st fuzzylojik-golf 🇺🇸 953 79 262ms 29 May 2025 831st 0xjac 🇨🇭 953 79 259ms 7 Jun 2025 831st targrik 953 79 263ms 29 Jun 2025 831st FlorianCassayre 🇫🇷 953 79 278ms 16 Jul 2025 831st jessesomerville 953 79 259ms 20 Jul 2025 831st GolfingSuccess 🇬🇷 953 79 279ms 22 Aug 2025 831st KasperKivimaeki 🇫🇮 953 79 245ms 25 Sep 2025 831st albanian-laundromat 953 79 263ms 2 Oct 2025 831st cefqrn 953 79 261ms 9 Nov 2025 831st solisolu 953 79 270ms 19 Nov 2025 831st Andrey2001 953 79 258ms 22 days ago 831st CornerMercury 🇬🇧 953 79 300ms 10 days ago 920th rambox11 952 34 9ms 25 Mar 2018 920th frobinsonj 952 34 8ms 28 Jun 2018 920th squadb3 952 34 8ms 11 Oct 2019 920th andersk 🇺🇸 952 34 9ms 21 Mar 2020 920th jwalaszek 952 34 9ms 15 May 2020 920th cywong-amino 🇭🇰 952 34 8ms 3 Jul 2020 920th daisy-lau 952 34 8ms 6 Jul 2020 920th guliyevemil1 🇦🇿 952 34 8ms 3 Feb 2021 920th Darrennchan8 952 34 8ms 23 Aug 2021 920th didion0 🇺🇸 952 34 8ms 14 Feb 2022 920th eranws 952 34 9ms 28 Oct 2022 920th Nicronmil 952 34 8ms 22 Nov 2022 920th DayDun 🇸🇪 952 34 8ms 23 Jan 2023 920th scpchicken 🇵🇼 952 34 9ms 4 Feb 2023 920th kkoenig 952 34 9ms 8 Jan 2024 920th Kacarott 🇦🇺 952 34 9ms 6 Jun 2024 920th targrik 952 34 8ms 5 Feb 2025 937th primo-ppcg 🇹🇭 950 28 13ms 31 Jan 2022 937th HPWiz 🇳🇿 950 28 13ms 20 Feb 2022 937th Sakisan 🇧🇪 950 28 14ms 11 Jul 2022 940th sisyphus-ppcg 🇦🇺 948 33 2ms 30 Oct 2022 940th Lydxn 🇨🇦 948 33 1ms 18 Jan 2025 942nd Lydxn 🇨🇦 948 34 345ms 20 Jan 2024 942nd JayXon 🇺🇸 948 34 347ms 25 Jan 2024 942nd GolfingSuccess 🇬🇷 948 34 352ms 31 Aug 2025 945th sisyphus-ppcg 🇦🇺 947 38 114ms 29 May 2021 945th Lydxn 🇨🇦 947 38 119ms 4 Nov 2021 947th JayXon 🇺🇸 947 45 75ms 11 Oct 2022 947th stefangimmillaro 947 45 76ms 7 May 2023 949th edsrzf 🇳🇿 947 58 409ms 24 Sep 2025 949th CaedenHarper 🇨🇦 947 58 454ms 24 Sep 2025 949th error256 947 58 498ms 24 Sep 2025 949th Shanethegamer 🇺🇸 947 58 434ms 25 Sep 2025 949th FlyingPenguin223 947 58 424ms 25 Sep 2025 949th emgordon154 947 58 432ms 25 Sep 2025 949th duckyluuk 🇳🇱 947 58 406ms 25 Sep 2025 949th m-tkach 🇺🇦 947 58 387ms 25 Sep 2025 949th voytxt 🇨🇿 947 58 367ms 25 Sep 2025 949th Yewzir 🇧🇪 947 58 452ms 2 Oct 2025 949th Andrey2001 947 58 497ms 24 days ago 960th I-Love-47 🇺🇦 947 70 78ms 8 Feb 2022 First Prev 881–960 of 9,572 Next Last