The Calendar hole will go live in approximately 13 days. Why not try and solve it ahead of time?
Evil Numbers 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 635th m-tkach 🇺🇦 908 64 25ms 17 Dec 2021 635th emplv 🇱🇻 908 64 26ms 17 Aug 2022 635th MeWhenI 🇻🇦 908 64 25ms 9 Sep 2022 635th Steffan153 🇫🇮 908 64 25ms 17 Feb 2023 635th Shanethegamer 🇺🇸 908 64 25ms 22 Mar 2023 635th sean-niemann 🇺🇸 908 64 25ms 14 Jan 2025 635th fuzzylojik-golf 🇺🇸 908 64 25ms 25 Aug 2025 648th primo-ppcg 🇹🇭 908 80 263ms 21 Apr 2020 648th nwellnhof 🇩🇪 908 80 263ms 23 Aug 2020 648th stefangimmillaro 908 80 261ms 21 Aug 2023 651st sisyphus-ppcg 🇦🇺 906 66 1ms 13 May 2022 651st GolfingSuccess 🇬🇷 906 66 1ms 15 May 2022 651st MeWhenI 🇻🇦 906 66 1ms 18 May 2022 651st ovs-code 🇩🇪 906 66 1ms 20 May 2022 651st inventshah 906 66 1ms 22 May 2022 651st lynn 906 66 1ms 27 May 2022 651st saito-ta 🇯🇵 906 66 1ms 9 Jun 2022 651st nwellnhof 🇩🇪 906 66 1ms 7 Jul 2022 651st Natanaelel 🇸🇪 906 66 1ms 28 Aug 2022 651st galloj 🇨🇿 906 66 1ms 28 Aug 2022 651st retrohun 906 66 1ms 1 Jan 2023 651st Steffan153 🇫🇮 906 66 1ms 28 Jan 2023 651st sean-niemann 🇺🇸 906 66 1ms 20 May 2023 651st JayXon 🇺🇸 906 66 1ms 25 May 2023 651st Lydxn 🇨🇦 906 66 1ms 24 Jun 2023 651st btnlq 906 66 1ms 24 Jun 2023 651st dokutan 906 66 1ms 2 Oct 2023 651st kritixilithos 906 66 1ms 19 May 2024 651st pardouin 🇫🇷 906 66 1ms 21 Sep 2024 651st DialFrost 🇸🇬 906 66 1ms 5 Jan 2025 651st stefangimmillaro 906 66 1ms 14 Jul 2025 651st fuzzylojik-golf 🇺🇸 906 66 1ms 2 Sep 2025 673rd nwellnhof 🇩🇪 905 52 1ms 5 May 2020 673rd primo-ppcg 🇹🇭 905 52 1ms 22 Aug 2020 673rd Shanethegamer 🇺🇸 905 52 1ms 3 Apr 2023 673rd ovs-code 🇩🇪 905 52 1ms 8 Oct 2023 673rd JohandeRuiter 🇳🇱 905 52 2ms 26 Nov 2023 673rd DialFrost 🇸🇬 905 52 1ms 16 Jan 2024 673rd KasperKivimaeki 🇫🇮 905 52 1ms 3 Feb 2024 673rd Herbert00709 🇵🇱 905 52 1ms 17 Apr 2024 673rd Steffan153 🇫🇮 905 52 1ms 2 Aug 2024 673rd rucin93 🇵🇱 905 52 2ms 3 Aug 2024 673rd MostParsingVex 905 52 2ms 27 Aug 2024 673rd Schoko3001 905 52 2ms 10 Jan 2025 673rd fuzzylojik-golf 🇺🇸 905 52 2ms 7 Aug 2025 673rd 09cf 905 52 4ms 18 days ago 687th sisyphus-ppcg 🇦🇺 903 40 4ms 11 Jun 2021 687th emplv 🇱🇻 903 40 4ms 17 Aug 2022 687th primo-ppcg 🇹🇭 903 40 4ms 3 Jul 2023 690th Steffan153 🇫🇮 902 71 69ms 2 Aug 2024 690th rucin93 🇵🇱 902 71 74ms 3 Aug 2024 690th sean-niemann 🇺🇸 902 71 82ms 6 Aug 2024 690th KasperKivimaeki 🇫🇮 902 71 79ms 25 Aug 2025 694th jared-hughes 901 57 8ms 20 Dec 2024 695th frankgraziano 901 107 10ms 11 Aug 2025 695th primo-ppcg 🇹🇭 901 107 11ms 13 Aug 2025 695th DialFrost 🇸🇬 901 107 10ms 13 Aug 2025 698th andersk 🇺🇸 899 40 8ms 21 Mar 2020 698th blueooooodle 899 40 9ms 11 Apr 2021 698th jansekulowicz 899 40 9ms 24 Apr 2022 698th steffan-polygolf 899 40 9ms 14 Feb 2024 698th JOrE20 🇺🇸 899 40 9ms 5 days ago 703rd janlelis 898 28 35ms 5 Jan 2020 703rd lynn 898 28 32ms 4 Feb 2022 703rd OhmNomNom 898 28 36ms 30 Oct 2022 703rd Shanethegamer 🇺🇸 898 28 43ms 22 Mar 2023 703rd xsot 🇸🇬 898 28 37ms 25 May 2023 703rd Natanaelel 🇸🇪 898 28 35ms 14 Mar 2024 703rd ovs-code 🇩🇪 898 28 34ms 22 Apr 2024 703rd fuzzylojik-golf 🇺🇸 898 28 44ms 29 Aug 2025 711th pardouin 🇫🇷 898 61 570ms 26 Sep 2025 711th sisyphus-ppcg 🇦🇺 898 61 493ms 22 days ago 711th ScottHamper 898 61 424ms 18 days ago 714th Steffan153 🇫🇮 898 63 26ms 6 Aug 2024 714th Lydxn 🇨🇦 898 63 25ms 6 Aug 2024 714th sean-niemann 🇺🇸 898 63 26ms 19 May 2025 717th Attero 🇸🇪 897 56 368ms 21 Nov 2021 717th iznax 897 56 339ms 21 Nov 2021 717th janbehrens 🇩🇪 897 56 362ms 21 Nov 2021 717th MeWhenI 🇻🇦 897 56 333ms 21 Nov 2021 First Prev 641–720 of 4,990 Next Last