The Calendar hole will go live in approximately 13 days. Why not try and solve it ahead of time?
Zeckendorf Representation 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 401st DialFrost 🇸🇬 762 151 359ms 4 Jul 2024 402nd lukegustafson 🇺🇸 760 91 10ms 2 Jul 2024 402nd voytxt 🇨🇿 760 91 9ms 22 Jul 2024 404th ovs-code 🇩🇪 760 129 65ms 4 Jul 2024 405th jmerle 🇳🇱 758 141 11ms 4 Jul 2024 406th MeWhenI 🇻🇦 756 84 3ms 7 Aug 2024 407th CaedenHarper 🇨🇦 756 96 789ms 23 Oct 2025 408th Shanethegamer 🇺🇸 756 112 2ms 13 Sep 2024 409th MostParsingVex 756 144 420ms 28 Jul 2024 410th MeWhenI 🇻🇦 754 90 289ms 14 Jul 2024 411th stefangimmillaro 754 94 5ms 27 Aug 2024 412th neihousaigaai 753 142 10ms 29 Sep 2024 413th h3ra993huskp 🇯🇵 751 149 468ms 18 days ago 414th mousetail 🇳🇱 749 178 182ms 1 Jul 2024 415th DialFrost 🇸🇬 748 90 1,269ms 20 Sep 2024 416th MeWhenI 🇻🇦 748 97 709ms 15 Sep 2025 417th Stockoh 🇫🇷 748 143 11ms 29 Sep 2024 417th snydej 748 143 30ms 21 Nov 2024 419th Natanaelel 🇸🇪 747 75 36ms 14 Jul 2024 420th DialFrost 🇸🇬 747 145 10ms 28 Dec 2024 421st albanian-laundromat 747 273 485ms 27 Oct 2025 422nd madeforlosers 743 93 9ms 23 Oct 2024 423rd solisolu 743 116 2ms 18 Nov 2025 424th MeWhenI 🇻🇦 742 107 945ms 1 Jul 2024 425th scpchicken 🇵🇼 742 144 31ms 13 Jul 2024 426th MeWhenI 🇻🇦 741 127 36ms 1 Jul 2024 427th retrohun 740 91 19ms 23 Oct 2025 428th edsrzf 🇳🇿 740 98 1,062ms 13 Sep 2025 429th error256 740 120 541ms 13 Aug 2024 430th MeWhenI 🇻🇦 740 141 424ms 1 Jul 2024 431st MeWhenI 🇻🇦 738 126 149ms 1 Jul 2024 431st Shanethegamer 🇺🇸 738 126 109ms 24 May 2025 433rd edsrzf 🇳🇿 738 136 4ms 4 Jul 2025 434th commandblockguy 🇺🇸 737 145 12ms 1 Jul 2024 434th jared-hughes 737 145 10ms 3 Jul 2024 434th wh3n3v3r 🇨🇿 737 145 9ms 18 Nov 2024 434th Babafaba 737 145 71ms 2 Nov 2025 438th helbling 🇨🇭 736 94 11ms 1 Jul 2024 439th AlephSquirrel 734 138 19ms 4 Oct 2024 440th KrausRaus 🇺🇸 732 146 10ms 4 Jul 2024 440th ComputerKWasTaken 🇺🇸 732 146 11ms 4 Jul 2024 440th hellwue 732 146 28ms 18 Jul 2024 440th btjones0 732 146 9ms 7 Feb 2025 444th albanian-laundromat 732 155 138ms 20 Nov 2025 445th MeWhenI 🇻🇦 731 118 2ms 5 Jul 2024 445th Shanethegamer 🇺🇸 731 118 2ms 25 Feb 2025 447th gjoacorp 🇬🇧 731 149 471ms 4 Aug 2025 448th Steffan153 🇫🇮 731 153 480ms 3 Jul 2024 449th Shanethegamer 🇺🇸 729 93 246ms 13 Sep 2024 450th Shanethegamer 🇺🇸 729 139 14ms 13 Sep 2024 451st Natanaelel 🇸🇪 728 95 10ms 1 Jul 2024 451st CaedenHarper 🇨🇦 728 95 9ms 23 Aug 2025 453rd emgordon154 728 109 999ms 2 Apr 2025 454th rucin93 🇵🇱 727 102 147ms 31 Oct 2024 455th emgordon154 725 119 2ms 18 Jul 2024 456th MeWhenI 🇻🇦 724 184 224ms 7 Aug 2024 457th Shanethegamer 🇺🇸 723 158 38ms 13 Sep 2024 458th MeWhenI 🇻🇦 723 282 452ms 9 Feb 2025 459th fgrosshans 🇫🇷 722 148 10ms 9 Jul 2024 459th KatieLG 🇬🇧 722 148 12ms 20 Apr 2025 461st Shanethegamer 🇺🇸 721 88 3ms 13 Sep 2024 462nd error256 720 103 137ms 13 Aug 2024 463rd MeWhenI 🇻🇦 720 162 14ms 2 Jul 2024 464th CatsAreFluffy 720 185 160ms 16 Nov 2024 465th msbranicky 718 118 2ms 3 Jul 2024 466th msbranicky 718 186 3ms 3 Jul 2024 467th jared-hughes 717 138 2ms 4 Jul 2024 468th emgordon154 717 140 9ms 12 Jan 2025 469th StefanHabel 🇨🇦 717 149 11ms 22 Mar 2025 469th luuumine 🇫🇷 717 149 11ms 17 days ago 471st Natanaelel 🇸🇪 717 158 182ms 1 Jul 2024 472nd BREMAUCY 🇫🇷 713 150 10ms 3 Jul 2024 473rd tobeannouncd 713 159 141ms 25 Apr 2025 474th elgan65536 713 187 188ms 6 Jul 2024 475th MeWhenI 🇻🇦 709 154 4ms 9 Aug 2024 476th DialFrost 🇸🇬 708 122 119ms 15 Dec 2024 477th roguh 🇬🇹 708 151 11ms 30 Jul 2024 478th dcgjb 707 96 300ms 3 Jul 2024 479th bitsandbeyond 🇳🇱 706 163 345ms 25 days ago 480th hiichbindermax 703 152 10ms 15 Jul 2024 First Prev 401–480 of 694 Next Last