The Calendar hole will go live in approximately 3 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 561st emgordon154 592 183 8ms 13 Dec 2024 562nd junkondo-jp 591 117 9ms 15 Dec 2024 563rd Salutations45 583 97 3ms 29 Dec 2024 564th MeWhenI 🇻🇦 583 193 126ms 1 Jul 2024 565th KatieLG 🇬🇧 579 113 37ms 1 Jul 2024 566th robin-scragg 578 185 10ms 5 Jul 2025 567th ginop 575 186 10ms 2 Jul 2024 567th inverseLorentz 🇦🇺 575 186 10ms 8 Jul 2024 569th alemelis 573 123 790ms 26 Aug 2024 570th dokutan 567 122 9ms 5 Jun 2025 571st OllieBoyne 🇬🇧 566 189 10ms 12 Jul 2024 572nd msbranicky 566 235 175ms 4 Jul 2024 573rd msbranicky 563 165 139ms 4 Jul 2024 574th bac0id 560 182 359ms 1 Jul 2024 575th alexsave 557 124 9ms 13 Nov 2024 576th bac0id 556 155 2ms 3 Jul 2024 577th dokutan 555 160 564ms 2 Jul 2024 578th Mabeloid 🇳🇴 554 193 11ms 11 Sep 2024 579th MeWhenI 🇻🇦 548 179 77ms 9 Aug 2024 580th dokutan 545 136 132ms 5 Aug 2024 581st JOrE20 🇺🇸 544 125 265ms 3 days ago 582nd weliveinhell 🇭🇹 544 127 9ms 4 Jul 2024 583rd dokutan 541 121 38ms 28 Sep 2024 584th MeWhenI 🇻🇦 540 199 1,243ms 2 Jul 2024 585th zakariamouhid 536 129 10ms 3 Jul 2024 586th snoozingnewt 🇨🇦 532 130 10ms 29 Sep 2025 587th zt14427 527 203 9ms 1 Jul 2024 588th luuumine 🇫🇷 519 166 2ms 26 days ago 589th dokutan 517 180 148ms 1 Jul 2024 590th Maximizer02 516 210 13ms 24 Jul 2024 591st madex 🇩🇪 515 127 41ms 1 Jul 2024 592nd klixel 🇨🇦 513 259 225ms 9 Jan 2025 593rd MeWhenI 🇻🇦 511 198 47ms 6 Aug 2024 594th KatieLG 🇬🇧 508 136 11ms 1 Jul 2024 595th msbranicky 505 265 57ms 4 Jul 2024 596th 0xjac 🇨🇭 505 269 290ms 19 Jun 2025 597th ComputerKWasTaken 🇺🇸 503 130 39ms 4 Jul 2024 598th MeWhenI 🇻🇦 500 235 30ms 1 Jul 2024 599th bac0id 497 225 439ms 1 Jul 2024 600th coreynash 494 140 10ms 2 Jul 2024 600th two-bad 🇬🇧 494 140 10ms 4 Oct 2024 602nd MeWhenI 🇻🇦 488 172 11ms 13 Aug 2024 603rd dieggsy 485 209 15ms 16 Oct 2024 604th jameswmccarty 484 221 10ms 10 Jul 2024 605th msbranicky 483 146 192ms 4 Jul 2024 606th CatsAreFluffy 480 227 61ms 3 Nov 2024 607th MeWhenI 🇻🇦 479 116 104ms 7 Aug 2024 608th iczelia 🇩🇪 471 183 2ms 16 Oct 2025 609th ComputerKWasTaken 🇺🇸 470 210 2ms 1 Jul 2024 610th snoozingnewt 🇨🇦 469 184 2ms 9 Oct 2025 611th azure-blondon 469 228 10ms 7 Jul 2024 612th yuchuehw 467 229 10ms 5 Jul 2024 613th TheZwierzLF 🇵🇱 463 192 607ms 13 days ago 614th acollett89 461 150 9ms 5 Aug 2025 615th Mabeloid 🇳🇴 460 193 794ms 17 Sep 2024 616th xyangst 458 151 10ms 15 Oct 2024 617th JOrE20 🇺🇸 458 154 233ms 3 days ago 618th LHLaurini 🇧🇷 453 139 52ms 1 Jul 2024 619th jtaxen 453 250 127ms 2 Jul 2024 620th tomh1012 449 227 419ms 23 Jul 2024 621st dokutan 444 244 6ms 17 Jul 2025 622nd MeWhenI 🇻🇦 443 152 13ms 1 Jul 2024 623rd TheZwierzLF 🇵🇱 442 242 12ms 25 Nov 2025 624th madex 🇩🇪 441 180 834ms 1 Jul 2024 625th galloj 🇨🇿 440 243 15ms 26 Aug 2024 626th snoozingnewt 🇨🇦 436 86 3ms 7 Oct 2025 627th c4augustus 431 87 2ms 16 Jul 2024 628th Flobois 430 158 250ms 23 Jul 2024 629th CatsAreFluffy 415 208 2ms 3 Nov 2024 630th madex 🇩🇪 411 168 9ms 1 Jul 2024 631st IISResetMe 409 166 238ms 4 Jul 2024 632nd JDiLenarda 🇫🇷 409 263 1,303ms 31 Aug 2024 633rd MeWhenI 🇻🇦 406 138 36ms 8 Aug 2024 634th dokutan 401 250 4ms 15 Jul 2024 635th dokutan 396 170 10ms 15 Aug 2024 636th madex 🇩🇪 392 220 2ms 1 Jul 2024 637th Zhenyu-Bo 387 276 10ms 1 Aug 2025 638th Msleizak 🇫🇷 386 176 241ms 19 Jul 2024 639th BambooleanLogic 🇸🇪 382 181 9ms 23 Jun 2025 640th madex 🇩🇪 381 349 230ms 1 Jul 2024 First Prev 561–640 of 684 Next Last