The Calendar hole will go live in approximately 13 days. Why not try and solve it ahead of time?
CSS Colors 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 241st sean-niemann 🇺🇸 834 611 773ms 21 Oct 2025 242nd edsrzf 🇳🇿 834 700 5ms 16 Aug 2025 243rd Steffan153 🇫🇮 833 621 431ms 31 Jan 2023 244th lynn 833 739 46ms 4 Sep 2021 245th ovs-code 🇩🇪 832 721 18ms 5 Jun 2025 246th JayXon 🇺🇸 831 765 1,783ms 14 Sep 2025 247th Yax42 🇫🇷 830 194 408ms 24 Sep 2025 248th m-tkach 🇺🇦 830 653 2ms 9 Nov 2025 249th tomtheisen 🇺🇸 829 680 10ms 24 Dec 2020 250th MeWhenI 🇻🇦 829 868 45ms 14 Jan 2025 251st emgordon154 828 972 873ms 24 Mar 2025 252nd MeWhenI 🇻🇦 827 682 142ms 21 May 2024 253rd error256 827 689 47ms 12 Dec 2024 254th lifthrasiir 🇰🇷 827 986 234ms 17 Dec 2024 255th DialFrost 🇸🇬 825 683 10ms 31 Jan 2023 256th edsrzf 🇳🇿 825 705 122ms 19 days ago 257th annaproxy 824 691 268ms 24 Dec 2022 258th jared-hughes 824 695 2ms 12 Apr 2022 259th Sp3000 🇦🇺 824 768 25ms 29 Jun 2021 260th MeWhenI 🇻🇦 824 1,423 13ms 19 Jul 2025 261st lynn 823 559 347ms 16 Oct 2023 261st sisyphus-ppcg 🇦🇺 823 559 476ms 12 Feb 2024 263rd lifthrasiir 🇰🇷 823 572 3ms 1 Dec 2024 264th jared-hughes 823 685 10ms 3 Aug 2022 265th edsrzf 🇳🇿 823 789 42ms 10 Jan 2025 266th MeWhenI 🇻🇦 823 822 44ms 22 Oct 2024 267th jared-hughes 822 677 214ms 17 Jul 2022 268th edsrzf 🇳🇿 822 837 20ms 23 Jun 2025 269th ovs-code 🇩🇪 820 661 15ms 25 Sep 2022 270th stefangimmillaro 820 795 762ms 16 Sep 2023 271st KatieLG 🇬🇧 818 81 254ms 11 Oct 2025 272nd stefangimmillaro 818 639 1,217ms 14 Jul 2023 273rd nathanfarlow 818 688 32ms 27 May 2023 274th acotis 818 725 220ms 2 days ago 275th Steffan153 🇫🇮 817 641 190ms 26 Jun 2024 276th ovs-code 🇩🇪 816 739 11ms 22 Jul 2023 277th sean-niemann 🇺🇸 816 750 5ms 20 Nov 2023 278th sean-niemann 🇺🇸 815 717 5ms 10 Nov 2023 279th typeswitch-dev 🇵🇹 814 741 11ms 22 Jul 2023 280th kg583 🇺🇸 814 798 122ms 13 Feb 2025 281st MeWhenI 🇻🇦 813 636 592ms 15 Feb 2023 282nd CornerMercury 🇬🇧 810 695 16ms 27 Oct 2025 283rd stefangimmillaro 810 835 45ms 4 Jun 2025 284th tomtheisen 🇺🇸 809 199 390ms 12 Feb 2025 285th jared-hughes 809 630 42ms 12 Sep 2022 286th Natanaelel 🇸🇪 808 697 20ms 5 Oct 2021 287th MeWhenI 🇻🇦 808 804 120ms 13 Feb 2025 288th WillConker 806 699 12ms 16 May 2024 289th qrakhen 805 200 419ms 18 Nov 2025 290th stefangimmillaro 803 709 104ms 21 Oct 2022 291st MeWhenI 🇻🇦 802 711 18ms 13 Dec 2023 292nd Natanaelel 🇸🇪 801 636 694ms 23 Oct 2021 293rd sean-niemann 🇺🇸 801 729 480ms 24 Sep 2025 294th ovs-code 🇩🇪 800 753 2,838ms 3 Jun 2024 295th MeWhenI 🇻🇦 799 589 3ms 26 Jan 2022 296th rucin93 🇵🇱 799 636 137ms 31 Oct 2024 297th edsrzf 🇳🇿 799 737 24ms 28 May 2025 298th annaproxy 799 771 305ms 1 May 2022 299th MeWhenI 🇻🇦 799 1,227 176ms 2 Aug 2023 300th dokutan 797 74 62ms 3 Nov 2024 301st lynn 796 745 162ms 6 Nov 2025 302nd Natanaelel 🇸🇪 796 774 189ms 20 May 2022 303rd rucin93 🇵🇱 796 1,011 501ms 20 Mar 2025 304th sean-niemann 🇺🇸 795 639 141ms 8 Jan 2025 305th jared-hughes 795 682 2ms 1 Apr 2022 306th CLOStrophobic 🇮🇹 795 741 19ms 6 Mar 2025 307th Shanethegamer 🇺🇸 794 642 37ms 29 Jul 2021 308th Irratix 🇳🇱 794 759 2,626ms 16 Dec 2022 309th lynn 792 712 144ms 26 Aug 2021 310th canissimia 🇦🇶 792 3,820 10ms 22 Nov 2021 311th GrayJoKing 🇦🇺 791 754 33ms 19 Jan 2023 312th namelessiw 790 204 429ms 14 Aug 2024 313th clemmesserli 789 84 294ms 20 Jun 2022 314th Shanethegamer 🇺🇸 787 657 531ms 21 Apr 2022 315th sean-niemann 🇺🇸 786 683 552ms 9 Jan 2024 316th GolfingSuccess 🇬🇷 786 915 25ms 18 Dec 2024 317th AdrienHache 🇫🇷 783 537 57ms 8 Sep 2024 318th saito-ta 🇯🇵 783 668 3ms 3 Oct 2024 319th edsrzf 🇳🇿 783 728 24ms 23 Jun 2025 320th lynn 783 746 5ms 26 Aug 2021 First Prev 241–320 of 1,257 Next Last