The Calendar hole will go live in approximately 10 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 561st bendiscz 834 128 273ms 20 Apr 2020 561st doge1338 834 128 343ms 20 Mar 2021 561st emplv 🇱🇻 834 128 284ms 20 Dec 2022 564th ovs-code 🇩🇪 834 142 508ms 29 Mar 2025 565th primo-ppcg 🇹🇭 831 157 274ms 16 Jan 2021 566th sean-niemann 🇺🇸 830 110 658ms 15 Jul 2025 567th DialFrost 🇸🇬 829 56 151ms 3 Aug 2024 568th inventshah 829 58 10ms 27 May 2021 568th emgordon154 829 58 9ms 30 Nov 2021 568th daniel-pedersen 🇸🇪 829 58 9ms 6 Mar 2022 568th DialFrost 🇸🇬 829 58 24ms 29 Jul 2024 572nd flawr 827 69 124ms 2 Jan 2019 573rd DialFrost 🇸🇬 827 89 552ms 29 Jul 2024 574th cduerm 827 129 275ms 12 May 2020 575th o0lit3 🇺🇸 821 28 41ms 29 Sep 2021 575th tidalDisruptionEvent 🇨🇦 821 28 40ms 10 Mar 2023 575th CatsAreFluffy 821 28 61ms 6 Jan 2024 578th jhu04 821 63 9ms 24 Sep 2022 578th Command-Master 821 63 9ms 23 Sep 2023 580th billings7 🇬🇧 821 110 395ms 21 Nov 2021 580th Yewzir 🇧🇪 821 110 430ms 6 Jun 2024 582nd MeWhenI 🇻🇦 821 130 274ms 9 Feb 2023 583rd commandblockguy 🇺🇸 820 61 415ms 15 Jan 2024 584th Steffan153 🇫🇮 817 59 5ms 12 Dec 2023 584th dokutan 817 59 5ms 31 Dec 2023 584th DialFrost 🇸🇬 817 59 6ms 16 Dec 2024 584th kg583 🇺🇸 817 59 5ms 15 Sep 2025 588th SirBogman 🇺🇸 817 72 1,283ms 4 Jan 2022 589th MeWhenI 🇻🇦 816 101 1,516ms 7 Nov 2025 589th edsrzf 🇳🇿 816 101 543ms 17 Nov 2025 591st annaproxy 815 44 2,477ms 28 Jan 2022 592nd piano-miles 815 59 15ms 19 Feb 2023 592nd CatsAreFluffy 815 59 10ms 19 Feb 2023 594th namelessiw 814 111 377ms 21 Jul 2025 595th DialFrost 🇸🇬 810 125 51ms 7 May 2025 596th LucasBertocchini 808 64 9ms 11 Dec 2020 596th MaxElf999 808 64 10ms 15 Feb 2024 596th KasperKivimaeki 🇫🇮 808 64 75ms 16 Jul 2025 599th DialFrost 🇸🇬 808 102 537ms 26 Sep 2025 599th stefangimmillaro 808 102 565ms 6 Oct 2025 601st elgan65536 808 132 283ms 18 Nov 2023 602nd namelessiw 807 62 420ms 5 Mar 2024 603rd SirBogman 🇺🇸 807 112 446ms 21 Nov 2021 604th ovs-code 🇩🇪 805 62 5ms 11 Mar 2023 605th ovs-code 🇩🇪 804 60 381ms 10 Dec 2023 606th DialFrost 🇸🇬 803 66 925ms 23 Aug 2024 607th cywong-amino 🇭🇰 801 60 37ms 2 Jul 2020 607th didion0 🇺🇸 801 60 10ms 9 Feb 2022 607th dmrichwa 🇺🇸 801 60 15ms 15 Jun 2022 610th annaproxy 799 113 470ms 5 Apr 2022 610th CaedenHarper 🇨🇦 799 113 923ms 19 Oct 2025 612th MeWhenI 🇻🇦 797 89 125ms 15 Oct 2022 613th bwenstar 795 65 10ms 9 Aug 2022 613th nstearns96 🇬🇧 795 65 10ms 15 Sep 2023 613th GeorgeStechman 🇬🇧 795 65 44ms 6 Jan 2024 616th prplz 🇦🇺 794 56 553ms 25 Jun 2020 617th namelessiw 793 104 449ms 7 Oct 2025 618th roguh 🇬🇹 792 63 5ms 26 Jan 2024 619th MeWhenI 🇻🇦 791 43 44ms 29 Dec 2024 620th primo-ppcg 🇹🇭 790 133 73ms 10 days ago 621st DialFrost 🇸🇬 790 161 1,713ms 15 Sep 2025 622nd primo-ppcg 🇹🇭 787 37 38ms 6 Dec 2020 623rd ovs-code 🇩🇪 787 59 235ms 3 Aug 2024 623rd emgordon154 787 59 123ms 10 Aug 2024 625th Yax42 🇫🇷 786 115 421ms 25 Dec 2024 626th duckyluuk 🇳🇱 785 105 420ms 25 Sep 2025 627th SirBogman 🇺🇸 784 134 63ms 25 May 2023 628th petar-donchev 783 66 76ms 3 Sep 2019 628th za3k 783 66 11ms 19 Oct 2022 628th qpwoeirut 783 66 12ms 14 Aug 2025 631st lifthrasiir 🇰🇷 783 316 1,507ms 15 Dec 2024 632nd jared-hughes 782 73 123ms 15 Sep 2023 633rd MeWhenI 🇻🇦 781 57 342ms 14 Jul 2024 634th ovs-code 🇩🇪 780 91 172ms 9 Jul 2024 634th DialFrost 🇸🇬 780 91 142ms 23 Mar 2025 636th MeWhenI 🇻🇦 779 68 961ms 12 May 2023 637th KasperKivimaeki 🇫🇮 778 135 66ms 20 Nov 2025 638th Herbert00709 🇵🇱 777 133 13ms 7 Jun 2024 639th acotis 777 184 153ms 28 Jun 2025 640th MeWhenI 🇻🇦 776 39 46ms 13 Jul 2024 First Prev 561–640 of 2,441 Next Last