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 480th RaBa21 🇭🇺 703 152 10ms 12 Jul 2025 480th InigoK 🇺🇸 703 152 214ms 4 Sep 2025 480th Andrey2001 703 152 11ms 26 hours ago 484th targrik 701 101 5ms 18 May 2025 485th MostParsingVex 701 123 2ms 1 Jul 2024 486th bitsandbeyond 🇳🇱 700 166 95ms 25 days ago 487th leon-w 699 153 10ms 24 Jul 2024 488th jared-hughes 695 124 2ms 3 Jul 2024 489th MeWhenI 🇻🇦 693 107 143ms 3 Aug 2024 490th tatzyr 🇯🇵 689 95 50ms 25 Mar 2025 491st Shanethegamer 🇺🇸 688 103 5ms 13 Sep 2024 492nd Salutations45 685 101 9ms 27 Nov 2024 492nd JOrE20 🇺🇸 685 101 11ms 6 days ago 494th HumanoidCPU 685 156 10ms 1 Jul 2024 494th CutSandstone 685 156 9ms 2 Jul 2024 496th Jacob385 682 164 442ms 16 Aug 2024 497th UnderKoen 🇳🇱 682 177 1,241ms 2 Jul 2024 498th mbittner20 681 157 9ms 11 Jul 2024 498th Vaekor 681 157 10ms 23 Jul 2024 498th theadamabrams 681 157 11ms 26 Dec 2024 501st Alex-x90 🇺🇸 679 127 2ms 12 Jul 2024 502nd jacekwladzinski 672 159 10ms 7 Oct 2025 503rd gigaprofisi 🇺🇸 671 103 8ms 21 Jun 2025 504th MeWhenI 🇻🇦 671 105 314ms 2 Jul 2024 505th iczelia 🇩🇪 671 169 145ms 16 Oct 2025 506th MeWhenI 🇻🇦 669 162 12ms 1 Jul 2024 507th vgamula 🇺🇦 668 160 35ms 3 Jul 2024 508th dokutan 668 200 2ms 4 Feb 2025 509th SirBogman 🇺🇸 667 153 394ms 4 Jul 2024 510th brimstonetrader 667 170 132ms 10 Jul 2024 511th thisishowmymindworks 🇳🇴 665 104 9ms 1 Jul 2024 512th msbranicky 663 134 480ms 1 Jul 2024 512th Babafaba 663 134 499ms 2 Nov 2025 514th Shanethegamer 🇺🇸 663 203 58ms 13 Sep 2024 515th jtaxen 660 162 10ms 2 Jul 2024 515th nstearns96 🇬🇧 660 162 12ms 9 Jul 2024 515th wuzekai518 660 162 11ms 23 Jul 2024 518th LHLaurini 🇧🇷 658 131 2ms 1 Jul 2024 519th bitsandbeyond 🇳🇱 658 155 392ms 25 days ago 520th snoozingnewt 🇨🇦 657 177 106ms 8 Oct 2025 521st Pyroan 656 163 10ms 14 May 2025 522nd KatieLG 🇬🇧 656 184 919ms 11 Aug 2024 523rd bitsandbeyond 🇳🇱 654 97 3ms 25 days ago 524th commandblockguy 🇺🇸 653 136 533ms 1 Sep 2025 525th bitsandbeyond 🇳🇱 652 106 9ms 25 days ago 526th OCNeve 652 164 9ms 3 Jul 2024 526th Upload-and-View 🇺🇦 652 164 10ms 9 Aug 2025 528th AtengChen 648 165 10ms 14 Aug 2024 529th dokutan 647 153 2ms 2 Jul 2024 530th kmathis22 647 173 571ms 22 Oct 2025 531st bitsandbeyond 🇳🇱 643 154 2ms 25 days ago 532nd CaedenHarper 🇨🇦 642 159 361ms 17 Oct 2025 533rd Feniske 🇫🇷 640 106 241ms 20 Jul 2024 534th MeWhenI 🇻🇦 638 111 5ms 1 Jul 2024 535th jatloe 636 168 11ms 24 Aug 2024 535th SB-945 636 168 10ms 10 Jan 2025 537th msbranicky 634 156 2ms 5 Jul 2024 538th CaedenHarper 🇨🇦 632 177 460ms 17 Oct 2025 539th msbranicky 632 184 93ms 5 Jul 2024 540th CatsAreFluffy 630 100 54ms 15 Nov 2024 541st MeWhenI 🇻🇦 630 137 96ms 1 Jul 2024 542nd msbranicky 630 216 258ms 4 Jul 2024 543rd mousetail 🇳🇱 629 137 3ms 1 Jul 2024 544th marcin7Cd 629 170 10ms 11 Jul 2024 544th YAJUE114514 629 170 10ms 31 Jul 2025 546th SirBogman 🇺🇸 628 200 44ms 3 Jun 2025 547th MeWhenI 🇻🇦 627 160 4ms 2 Jul 2024 548th msbranicky 626 163 3,967ms 7 Jan 2025 549th sheen4n 625 171 10ms 21 Jul 2024 549th FortuiteMan 🇫🇷 625 171 11ms 26 Sep 2024 551st msbranicky 622 185 342ms 5 Jul 2024 552nd MeWhenI 🇻🇦 621 91 2ms 1 Jul 2024 553rd bac0id 619 176 473ms 1 Jul 2024 554th dokutan 618 173 9ms 2 Jul 2024 554th klixel 🇨🇦 618 173 11ms 20 Jan 2025 556th HumanoidCPU 617 144 518ms 31 Oct 2024 557th croc54 614 174 10ms 17 Jan 2025 558th emgordon154 606 108 54ms 26 Jul 2024 559th bitsandbeyond 🇳🇱 605 225 265ms 25 days ago 560th Shanethegamer 🇺🇸 604 92 175ms 24 Sep 2024 First Prev 481–560 of 694 Next Last