The Calendar hole will go live in approximately 10 days. Why not try and solve it ahead of time?
Zeckendorf Representation in all languages in chars. 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 Chars Time Submitted 561st msbranicky 531 134 480ms 1 Jul 2024 562nd fgrosshans 🇫🇷 527 148 10ms 9 Jul 2024 563rd commandblockguy 🇺🇸 523 136 533ms 1 Sep 2025 564th StefanHabel 🇨🇦 523 149 11ms 22 Mar 2025 565th BREMAUCY 🇫🇷 520 150 10ms 3 Jul 2024 566th edsrzf 🇳🇿 520 181 9ms 24 Nov 2024 567th dokutan 517 180 148ms 1 Jul 2024 568th bitsandbeyond 🇳🇱 517 258 177ms 22 Nov 2025 569th roguh 🇬🇹 516 151 11ms 30 Jul 2024 570th emgordon154 515 183 8ms 13 Dec 2024 571st klixel 🇨🇦 515 259 225ms 9 Jan 2025 572nd luuumine 🇫🇷 514 166 2ms 19 days ago 573rd hiichbindermax 513 152 10ms 15 Jul 2024 573rd InigoK 🇺🇸 513 152 214ms 4 Sep 2025 573rd Andrey2001 513 152 11ms 3 days ago 576th MeWhenI 🇻🇦 511 198 47ms 6 Aug 2024 577th leon-w 509 153 10ms 24 Jul 2024 578th msbranicky 508 265 57ms 4 Jul 2024 579th 0xjac 🇨🇭 506 269 290ms 19 Jun 2025 580th MeWhenI 🇻🇦 503 235 30ms 1 Jul 2024 581st bitsandbeyond 🇳🇱 502 268 60ms 22 Nov 2025 582nd CutSandstone 500 156 9ms 2 Jul 2024 583rd bac0id 497 225 439ms 1 Jul 2024 584th mbittner20 496 157 9ms 11 Jul 2024 584th Vaekor 496 157 10ms 23 Jul 2024 584th theadamabrams 496 157 11ms 26 Dec 2024 587th coreynash 494 140 10ms 2 Jul 2024 587th two-bad 🇬🇧 494 140 10ms 4 Oct 2024 589th jacekwladzinski 490 159 10ms 7 Oct 2025 590th MeWhenI 🇻🇦 488 172 11ms 13 Aug 2024 591st vgamula 🇺🇦 487 160 35ms 3 Jul 2024 592nd bitsandbeyond 🇳🇱 485 146 6ms 22 Nov 2025 593rd dieggsy 485 209 15ms 16 Oct 2024 594th jtaxen 481 162 10ms 2 Jul 2024 594th nstearns96 🇬🇧 481 162 12ms 9 Jul 2024 596th CatsAreFluffy 480 227 83ms 3 Nov 2024 597th dokutan 480 231 44ms 27 Aug 2024 598th Pyroan 478 163 10ms 14 May 2025 599th MeWhenI 🇻🇦 476 179 77ms 9 Aug 2024 600th OCNeve 475 164 9ms 3 Jul 2024 600th Upload-and-View 🇺🇦 475 164 10ms 9 Aug 2025 602nd AtengChen 472 165 10ms 14 Aug 2024 603rd msbranicky 471 146 223ms 4 Jul 2024 604th ComputerKWasTaken 🇺🇸 471 210 2ms 1 Jul 2024 605th iczelia 🇩🇪 466 183 2ms 16 Oct 2025 606th snoozingnewt 🇨🇦 464 184 2ms 9 Oct 2025 607th madex 🇩🇪 461 127 42ms 1 Jul 2024 608th acollett89 461 150 9ms 5 Aug 2025 609th marcin7Cd 459 170 10ms 11 Jul 2024 609th Mabeloid 🇳🇴 459 170 12ms 17 Sep 2024 609th YAJUE114514 459 170 10ms 31 Jul 2025 612th xyangst 458 151 10ms 15 Oct 2024 613th sheen4n 456 171 10ms 21 Jul 2024 614th jtaxen 453 250 127ms 2 Jul 2024 615th klixel 🇨🇦 451 173 11ms 20 Jan 2025 616th ComputerKWasTaken 🇺🇸 450 130 33ms 4 Jul 2024 617th tomh1012 450 227 419ms 23 Jul 2024 618th croc54 448 174 10ms 17 Jan 2025 619th Maximizer02 448 210 13ms 24 Jul 2024 620th MeWhenI 🇻🇦 443 152 18ms 1 Jul 2024 621st madex 🇩🇪 441 180 834ms 1 Jul 2024 622nd snoozingnewt 🇨🇦 436 86 3ms 7 Oct 2025 623rd c4augustus 431 87 2ms 16 Jul 2024 624th Flobois 429 158 264ms 23 Jul 2024 625th MeWhenI 🇻🇦 422 116 148ms 7 Aug 2024 626th Mabeloid 🇳🇴 419 170 759ms 17 Sep 2024 627th ginop 419 186 10ms 2 Jul 2024 627th inverseLorentz 🇦🇺 419 186 10ms 8 Jul 2024 629th OllieBoyne 🇬🇧 412 189 10ms 12 Jul 2024 630th CatsAreFluffy 410 208 2ms 3 Nov 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 bitsandbeyond 🇳🇱 402 294 29ms 22 Nov 2025 635th dokutan 401 250 4ms 15 Jul 2024 636th dokutan 396 170 10ms 15 Aug 2024 637th dokutan 395 174 740ms 2 Jul 2024 638th madex 🇩🇪 388 220 2ms 1 Jul 2024 639th Msleizak 🇫🇷 385 176 241ms 19 Jul 2024 640th zt14427 384 203 9ms 1 Jul 2024 First Prev 561–640 of 692 Next Last