The Calendar hole will go live in approximately 12 days. Why not try and solve it ahead of time?
Evil Numbers 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 706th BREMAUCY 🇫🇷 910 39 364ms 25 Jan 2024 706th m42km 910 39 343ms 4 Feb 2024 706th duckyluuk 🇳🇱 910 39 380ms 27 Mar 2024 706th MeWhenI 🇻🇦 910 39 379ms 24 May 2024 706th pardouin 🇫🇷 910 39 411ms 23 Jun 2024 706th CaedenHarper 🇨🇦 910 39 365ms 13 Jul 2024 706th KatieLG 🇬🇧 910 39 413ms 17 Aug 2024 706th b-illy 🇬🇧 910 39 350ms 7 Sep 2024 706th emgordon154 910 39 345ms 16 Nov 2024 706th fuzzylojik-golf 🇺🇸 910 39 343ms 30 May 2025 706th Mukundan314 910 39 366ms 16 Jun 2025 706th CornerMercury 🇬🇧 910 39 348ms 12 Oct 2025 706th Babafaba 910 39 345ms 14 Oct 2025 706th snoozingnewt 🇨🇦 910 39 342ms 25 Oct 2025 735th andersk 🇺🇸 910 58 122ms 6 Jan 2020 736th Lydxn 🇨🇦 909 58 1ms 19 Jul 2023 737th JayXon 🇺🇸 909 64 423ms 28 Feb 2022 737th Lydxn 🇨🇦 909 64 437ms 9 Mar 2022 737th Steffan153 🇫🇮 909 64 418ms 2 Aug 2024 737th sean-niemann 🇺🇸 909 64 451ms 6 Aug 2024 741st sean-niemann 🇺🇸 908 36 717ms 29 Aug 2025 741st fuzzylojik-golf 🇺🇸 908 36 654ms 22 Sep 2025 743rd Lydxn 🇨🇦 908 64 25ms 7 Jul 2021 743rd cure-honey 🇯🇵 908 64 25ms 8 Jul 2021 743rd sisyphus-ppcg 🇦🇺 908 64 24ms 8 Jul 2021 743rd primo-ppcg 🇹🇭 908 64 24ms 8 Jul 2021 743rd JayXon 🇺🇸 908 64 24ms 8 Jul 2021 743rd prplz 🇦🇺 908 64 25ms 8 Jul 2021 743rd m-tkach 🇺🇦 908 64 25ms 17 Dec 2021 743rd emplv 🇱🇻 908 64 26ms 17 Aug 2022 743rd MeWhenI 🇻🇦 908 64 25ms 9 Sep 2022 743rd Steffan153 🇫🇮 908 64 25ms 17 Feb 2023 743rd Shanethegamer 🇺🇸 908 64 25ms 22 Mar 2023 743rd sean-niemann 🇺🇸 908 64 25ms 14 Jan 2025 743rd fuzzylojik-golf 🇺🇸 908 64 25ms 25 Aug 2025 756th bendiscz 908 82 285ms 19 Apr 2020 756th dpatterbee 908 82 259ms 20 Aug 2020 756th nwellnhof 🇩🇪 908 82 264ms 10 Oct 2020 756th MeWhenI 🇻🇦 908 82 257ms 4 Nov 2021 756th GrayJoKing 🇦🇺 908 82 258ms 10 Mar 2022 756th m-tkach 🇺🇦 908 82 260ms 14 Jun 2023 756th DialFrost 🇸🇬 908 82 258ms 26 Sep 2023 756th ovs-code 🇩🇪 908 82 267ms 6 Oct 2023 756th Yewzir 🇧🇪 908 82 263ms 25 Oct 2023 756th Betuaredead 908 82 291ms 13 Nov 2023 756th kkoenig 908 82 261ms 2 Jan 2024 756th pardouin 🇫🇷 908 82 263ms 23 Aug 2024 756th edsrzf 🇳🇿 908 82 277ms 25 Jun 2025 769th sisyphus-ppcg 🇦🇺 907 40 93ms 10 Jun 2021 769th steffan-polygolf 907 40 92ms 24 Feb 2023 771st Lydxn 🇨🇦 907 42 3ms 16 Jul 2023 771st GrayJoKing 🇦🇺 907 42 3ms 16 Jul 2023 771st fuzzylojik-golf 🇺🇸 907 42 3ms 24 Sep 2025 774th sisyphus-ppcg 🇦🇺 906 66 1ms 13 May 2022 774th GolfingSuccess 🇬🇷 906 66 1ms 15 May 2022 774th MeWhenI 🇻🇦 906 66 1ms 18 May 2022 774th ovs-code 🇩🇪 906 66 1ms 20 May 2022 774th inventshah 906 66 1ms 22 May 2022 774th lynn 906 66 1ms 27 May 2022 774th saito-ta 🇯🇵 906 66 1ms 9 Jun 2022 774th nwellnhof 🇩🇪 906 66 1ms 7 Jul 2022 774th Natanaelel 🇸🇪 906 66 1ms 28 Aug 2022 774th galloj 🇨🇿 906 66 1ms 28 Aug 2022 774th retrohun 906 66 1ms 1 Jan 2023 774th Steffan153 🇫🇮 906 66 1ms 28 Jan 2023 774th sean-niemann 🇺🇸 906 66 1ms 20 May 2023 774th JayXon 🇺🇸 906 66 1ms 25 May 2023 774th Lydxn 🇨🇦 906 66 1ms 24 Jun 2023 774th btnlq 906 66 1ms 24 Jun 2023 774th dokutan 906 66 1ms 2 Oct 2023 774th kritixilithos 906 66 1ms 19 May 2024 774th pardouin 🇫🇷 906 66 1ms 21 Sep 2024 774th DialFrost 🇸🇬 906 66 1ms 5 Jan 2025 774th stefangimmillaro 906 66 1ms 14 Jul 2025 774th fuzzylojik-golf 🇺🇸 906 66 1ms 2 Sep 2025 796th JayXon 🇺🇸 905 52 2ms 17 Feb 2021 796th Steffan153 🇫🇮 905 52 1ms 2 Aug 2024 796th rucin93 🇵🇱 905 52 2ms 3 Aug 2024 796th sean-niemann 🇺🇸 905 52 2ms 6 Aug 2024 796th KasperKivimaeki 🇫🇮 905 52 1ms 18 Dec 2024 First Prev 721–800 of 5,023 Next Last