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 641st itsh01 775 62 53ms 14 Sep 2022 641st TheRealOhead 🇺🇸 775 62 9ms 30 Mar 2023 641st gigaprofisi 🇺🇸 775 62 9ms 1 Sep 2025 644th DialFrost 🇸🇬 774 107 731ms 1 Apr 2025 645th DialFrost 🇸🇬 773 136 68ms 15 days ago 646th BREMAUCY 🇫🇷 771 44 253ms 23 Mar 2024 646th janlelis 771 44 47ms 23 Sep 2024 646th DialFrost 🇸🇬 771 44 235ms 26 Dec 2024 649th FlorianCassayre 🇫🇷 768 139 281ms 19 Jul 2025 650th stassats 767 65 22ms 28 Apr 2018 650th jslip 767 65 35ms 5 Sep 2018 650th GrayJoKing 🇦🇺 767 65 13ms 17 Dec 2020 650th BBoehm 🇩🇪 767 65 13ms 25 Feb 2021 654th Sp3000 🇦🇺 766 38 10ms 28 May 2021 655th stefangimmillaro 765 65 3,168ms 14 Nov 2024 656th stefangimmillaro 765 187 153ms 6 Nov 2023 657th lynn 764 61 16ms 15 Nov 2021 658th SirBogman 🇺🇸 762 133 47ms 3 Jun 2025 659th CatsAreFluffy 760 68 10ms 19 Feb 2023 659th cros107 🇦🇺 760 68 9ms 5 Sep 2025 659th CommandLeo 🇮🇹 760 68 108ms 24 Nov 2025 662nd emgordon154 758 97 482ms 27 May 2025 663rd rucin93 🇵🇱 757 116 102ms 28 Mar 2025 664th pardouin 🇫🇷 756 66 14ms 21 Mar 2025 665th sean-niemann 🇺🇸 756 159 48ms 25 May 2023 666th MeWhenI 🇻🇦 755 50 95ms 1 Nov 2023 667th snoozingnewt 🇨🇦 754 45 90ms 16 Oct 2025 667th anter69 🇭🇺 754 45 122ms 15 days ago 669th SirBogman 🇺🇸 754 59 334ms 9 Jun 2020 670th primo-ppcg 🇹🇭 752 163 1,827ms 3 Feb 2022 671st DayDun 🇸🇪 751 64 11ms 24 Jan 2023 671st jbt 751 64 9ms 24 Dec 2023 673rd j-Ewan 751 142 352ms 14 Mar 2022 673rd jerrandolph 751 142 320ms 23 Dec 2023 675th MeWhenI 🇻🇦 749 62 162ms 3 Aug 2024 676th Shanethegamer 🇺🇸 749 69 9ms 27 Jun 2022 676th elgan65536 749 69 70ms 18 Nov 2023 678th primo-ppcg 🇹🇭 746 71 898ms 25 Nov 2021 679th ovs-code 🇩🇪 742 67 3,573ms 30 Nov 2024 680th edsrzf 🇳🇿 740 51 61ms 9 days ago 681st primo-ppcg 🇹🇭 740 63 112ms 30 Jan 2022 682nd zbreit 🇺🇸 739 70 12ms 17 Aug 2021 682nd thehylian 739 70 12ms 30 Dec 2022 682nd NDR0216 🇹🇼 739 70 11ms 17 Feb 2023 682nd fourth-bit 739 70 12ms 9 Jul 2023 682nd plcc0 739 70 13ms 24 Mar 2025 682nd cefqrn 739 70 11ms 13 Apr 2025 682nd dirckvdende 739 70 12ms 27 Jul 2025 682nd InigoK 🇺🇸 739 70 14ms 29 Aug 2025 690th stefangimmillaro 739 96 122ms 18 Oct 2023 691st Natanaelel 🇸🇪 737 46 54ms 28 Dec 2022 691st Yewzir 🇧🇪 737 46 94ms 19 Feb 2024 691st Lv0Sys 🇵🇱 737 46 85ms 8 Jun 2025 694th CatsAreFluffy 736 68 406ms 15 Jan 2024 695th anter69 🇭🇺 736 72 767ms 15 days ago 696th CaedenHarper 🇨🇦 736 112 437ms 24 Sep 2025 696th dokutan 736 112 451ms 7 Nov 2025 698th stefangimmillaro 734 138 52ms 26 Apr 2025 699th jared-hughes 730 144 67ms 9 Mar 2024 700th zakariamouhid 728 66 11ms 18 May 2023 700th FlorianCassayre 🇫🇷 728 66 62ms 4 Jun 2024 700th helbling 🇨🇭 728 66 9ms 9 Sep 2024 703rd sstadick 728 71 23ms 20 Feb 2018 703rd biotinker 728 71 24ms 20 Feb 2018 703rd gregadoff 728 71 23ms 20 Feb 2018 703rd tcoard 728 71 23ms 20 Feb 2018 703rd bkshrader 728 71 24ms 30 Dec 2018 703rd GolfingSuccess 🇬🇷 728 71 23ms 27 May 2019 703rd michelebastione 🇮🇹 728 71 23ms 30 Jun 2019 703rd thisishowmymindworks 🇳🇴 728 71 9ms 17 Oct 2020 703rd LlamaLad7 🇬🇧 728 71 23ms 17 Jan 2021 703rd georgehulme 728 71 24ms 27 Jan 2022 703rd LeeCamp 728 71 23ms 15 Feb 2022 703rd andre-de-lorde 728 71 24ms 7 Jun 2022 703rd cbondurant 728 71 12ms 6 Jul 2022 703rd dokutan 728 71 23ms 1 Jun 2024 703rd Bulmenisaurus 728 71 22ms 19 Jun 2024 718th HPWiz 🇳🇿 728 73 111ms 20 Nov 2023 719th pardouin 🇫🇷 726 163 2,289ms 28 Mar 2025 720th Shanethegamer 🇺🇸 725 69 419ms 16 Jan 2024 First Prev 641–720 of 2,419 Next Last