The Calendar hole will go live in approximately 33 hours. 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 madex 🇩🇪 594 180 10ms 1 Jul 2024 562nd emgordon154 592 183 8ms 13 Dec 2024 563rd junkondo-jp 591 117 9ms 15 Dec 2024 564th Salutations45 583 97 3ms 29 Dec 2024 565th MeWhenI 🇻🇦 583 193 126ms 1 Jul 2024 566th KatieLG 🇬🇧 579 113 37ms 1 Jul 2024 567th robin-scragg 578 185 10ms 5 Jul 2025 568th ginop 575 186 10ms 2 Jul 2024 568th inverseLorentz 🇦🇺 575 186 10ms 8 Jul 2024 570th alemelis 573 123 790ms 26 Aug 2024 571st dokutan 567 122 9ms 5 Jun 2025 572nd OllieBoyne 🇬🇧 566 189 10ms 12 Jul 2024 573rd msbranicky 566 235 175ms 4 Jul 2024 574th msbranicky 563 165 139ms 4 Jul 2024 575th bac0id 560 182 359ms 1 Jul 2024 576th alexsave 557 124 9ms 13 Nov 2024 577th bac0id 556 155 2ms 3 Jul 2024 578th dokutan 555 160 564ms 2 Jul 2024 579th Mabeloid 🇳🇴 554 193 11ms 11 Sep 2024 580th MeWhenI 🇻🇦 548 179 77ms 9 Aug 2024 581st dokutan 545 136 132ms 5 Aug 2024 582nd JOrE20 🇺🇸 544 125 265ms 5 days ago 583rd weliveinhell 🇭🇹 544 127 9ms 4 Jul 2024 584th dokutan 541 121 38ms 28 Sep 2024 585th MeWhenI 🇻🇦 540 199 1,243ms 2 Jul 2024 586th zakariamouhid 536 129 10ms 3 Jul 2024 587th snoozingnewt 🇨🇦 532 130 10ms 29 Sep 2025 588th zt14427 527 203 9ms 1 Jul 2024 589th luuumine 🇫🇷 519 166 2ms 1 Dec 2025 590th dokutan 517 180 148ms 1 Jul 2024 591st Maximizer02 516 210 13ms 24 Jul 2024 592nd madex 🇩🇪 515 127 41ms 1 Jul 2024 593rd klixel 🇨🇦 513 259 225ms 9 Jan 2025 594th MeWhenI 🇻🇦 511 198 47ms 6 Aug 2024 595th KatieLG 🇬🇧 508 136 11ms 1 Jul 2024 596th msbranicky 505 265 57ms 4 Jul 2024 597th 0xjac 🇨🇭 505 269 290ms 19 Jun 2025 598th ComputerKWasTaken 🇺🇸 503 130 39ms 4 Jul 2024 599th MeWhenI 🇻🇦 500 235 30ms 1 Jul 2024 600th bac0id 497 225 439ms 1 Jul 2024 601st coreynash 494 140 10ms 2 Jul 2024 601st two-bad 🇬🇧 494 140 10ms 4 Oct 2024 603rd MeWhenI 🇻🇦 488 172 11ms 13 Aug 2024 604th dieggsy 485 209 15ms 16 Oct 2024 605th jameswmccarty 484 221 10ms 10 Jul 2024 606th msbranicky 483 146 192ms 4 Jul 2024 607th CatsAreFluffy 480 227 61ms 3 Nov 2024 608th MeWhenI 🇻🇦 479 116 104ms 7 Aug 2024 609th iczelia 🇩🇪 471 183 2ms 16 Oct 2025 610th ComputerKWasTaken 🇺🇸 470 210 2ms 1 Jul 2024 611th snoozingnewt 🇨🇦 469 184 2ms 9 Oct 2025 612th azure-blondon 469 228 10ms 7 Jul 2024 613th yuchuehw 467 229 10ms 5 Jul 2024 614th TheZwierzLF 🇵🇱 463 192 607ms 16 days ago 615th acollett89 461 150 9ms 5 Aug 2025 616th Mabeloid 🇳🇴 460 193 794ms 17 Sep 2024 617th xyangst 458 151 10ms 15 Oct 2024 618th JOrE20 🇺🇸 458 154 233ms 5 days ago 619th LHLaurini 🇧🇷 453 139 52ms 1 Jul 2024 620th jtaxen 453 250 127ms 2 Jul 2024 621st tomh1012 449 227 419ms 23 Jul 2024 622nd dokutan 444 244 6ms 17 Jul 2025 623rd MeWhenI 🇻🇦 443 152 13ms 1 Jul 2024 624th TheZwierzLF 🇵🇱 442 242 12ms 25 Nov 2025 625th madex 🇩🇪 441 180 834ms 1 Jul 2024 626th galloj 🇨🇿 440 243 15ms 26 Aug 2024 627th snoozingnewt 🇨🇦 436 86 3ms 7 Oct 2025 628th c4augustus 431 87 2ms 16 Jul 2024 629th Flobois 430 158 250ms 23 Jul 2024 630th CatsAreFluffy 415 208 2ms 3 Nov 2024 631st IISResetMe 412 165 257ms 21 hours ago 632nd madex 🇩🇪 411 168 9ms 1 Jul 2024 633rd JDiLenarda 🇫🇷 409 263 1,303ms 31 Aug 2024 634th MeWhenI 🇻🇦 406 138 36ms 8 Aug 2024 635th dokutan 401 250 4ms 15 Jul 2024 636th dokutan 396 170 10ms 15 Aug 2024 637th madex 🇩🇪 392 220 2ms 1 Jul 2024 638th Zhenyu-Bo 387 276 10ms 1 Aug 2025 639th Msleizak 🇫🇷 386 176 241ms 19 Jul 2024 640th BambooleanLogic 🇸🇪 382 181 9ms 23 Jun 2025 First Prev 561–640 of 685 Next Last