The Calendar hole will go live in approximately 6 days. Why not try and solve it ahead of time?
φ 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 767th grave367 699 74 23ms 5 Mar 2023 767th crispshaker 699 74 12ms 18 Mar 2023 767th janbehrens 🇩🇪 699 74 12ms 17 Jun 2023 767th msbranicky 699 74 12ms 10 Jul 2023 767th bac0id 699 74 12ms 20 Sep 2023 767th Stockoh 🇫🇷 699 74 12ms 5 Nov 2023 767th smokestacklightnin 🇺🇸 699 74 12ms 29 Dec 2023 767th zwxzwxzwx21 699 74 12ms 11 Jan 2024 767th sultan 699 74 11ms 9 Mar 2024 767th roupiq 🇵🇱 699 74 11ms 18 Apr 2024 767th Herbert00709 🇵🇱 699 74 17ms 8 May 2024 767th christensendaniel 699 74 12ms 13 May 2024 767th vgamula 🇺🇦 699 74 12ms 18 May 2024 767th codingisgreatbutiamnot 699 74 11ms 14 Jul 2024 767th xyangst 699 74 13ms 12 Oct 2024 767th gigaprofisi 🇺🇸 699 74 12ms 2 Mar 2025 767th Pyroan 699 74 12ms 18 Mar 2025 767th BenjaminHGong 699 74 13ms 23 May 2025 767th codewrite 🇬🇧 699 74 12ms 25 May 2025 767th JOrE-Softwares 699 74 12ms 31 May 2025 767th Flekay 🇩🇪 699 74 11ms 10 Jul 2025 767th sainiayush 699 74 12ms 14 Jul 2025 767th Emutis 🇱🇹 699 74 12ms 6 Oct 2025 767th luuumine 🇫🇷 699 74 13ms 8 Oct 2025 767th TJK-S 699 74 12ms 28 Oct 2025 767th LostSyntax21 🇬🇧 699 74 12ms 9 Nov 2025 767th Andrey2001 699 74 13ms 9 days ago 828th yzhs 🇩🇪 697 33 33ms 7 Sep 2020 829th emgordon154 697 126 109ms 24 days ago 830th retrohun 697 844 31ms 4 Jan 2023 831st janbehrens 🇩🇪 696 130 471ms 21 Nov 2021 832nd Yewzir 🇧🇪 696 151 806ms 14 May 2024 833rd albanian-laundromat 695 173 56ms 8 Sep 2025 834th fisxoj 693 72 22ms 28 Apr 2018 835th Irratix 🇳🇱 692 49 87ms 1 Jul 2022 836th dokutan 690 52 2,024ms 31 Dec 2023 836th FlorianCassayre 🇫🇷 690 52 2,084ms 26 May 2024 838th msrawson 689 75 11ms 30 Aug 2018 838th jmhowl 689 75 12ms 24 Mar 2020 838th Secozzi 689 75 11ms 20 Oct 2020 838th StHagel 689 75 11ms 7 May 2021 838th cubed-guy 689 75 49ms 18 Oct 2021 838th pecholsjones 689 75 12ms 12 Dec 2021 838th BerkeAltiparmak 689 75 12ms 23 May 2022 838th asadullayev 689 75 12ms 8 Jul 2022 838th kenny14231 689 75 12ms 5 Aug 2022 838th jtaxen 689 75 11ms 4 Jan 2023 838th DrPiranoid 689 75 12ms 26 Mar 2023 838th Mikey-Beep 🇬🇧 689 75 23ms 24 Aug 2023 838th rollershutter 689 75 12ms 27 May 2024 838th Gopalkataria 🇮🇳 689 75 12ms 24 Feb 2025 852nd albanian-laundromat 688 172 453ms 18 Oct 2025 853rd lynn 686 236 219ms 4 Aug 2023 854th Steffan153 🇫🇮 685 56 39ms 29 Aug 2024 855th MeWhenI 🇻🇦 683 237 67ms 6 Jun 2023 856th grondilu 682 39 224ms 27 Mar 2023 857th MeWhenI 🇻🇦 679 71 116ms 13 Dec 2023 858th emgordon154 678 213 4,441ms 22 Oct 2024 859th tayloia 🇬🇧 677 71 32ms 17 Jan 2023 859th Yewzir 🇧🇪 677 71 27ms 19 Feb 2024 859th Yax42 🇫🇷 677 71 8ms 5 Sep 2025 862nd KatieLG 🇬🇧 676 74 339ms 15 Jan 2024 862nd neel11235813 676 74 373ms 15 Jan 2024 862nd msbranicky 676 74 375ms 16 Jan 2024 862nd Herbert00709 🇵🇱 676 74 399ms 13 May 2024 862nd Stockoh 🇫🇷 676 74 387ms 24 Jun 2024 867th msbranicky 675 158 371ms 31 Aug 2023 868th Yewzir 🇧🇪 674 66 578ms 19 Feb 2024 869th MeWhenI 🇻🇦 673 176 521ms 10 Feb 2025 870th Quiet-Clicking-Sounds 671 77 11ms 4 Dec 2019 870th xkacer 🇨🇿 671 77 12ms 25 Jan 2021 870th Vinterion 671 77 12ms 23 Jul 2023 870th davidsaltacc 671 77 12ms 16 Nov 2023 870th mohammad-sayed-ahmad 671 77 11ms 21 Jul 2024 875th Yewzir 🇧🇪 666 152 444ms 28 May 2023 876th h3ra993huskp 🇯🇵 665 124 456ms 25 days ago 877th tomh1012 665 136 410ms 16 Sep 2025 878th ArturLange 663 78 24ms 12 Sep 2018 878th Anthony-Williams-06 663 78 23ms 5 Dec 2022 880th targrik 663 161 324ms 4 Jul 2025 First Prev 801–880 of 2,420 Next Last
