The Calendar hole will go live in approximately 13 days. Why not try and solve it ahead of time?
brainfuck 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 481st mossprescott 715 226 23ms 10 Jan 2023 482nd edsrzf 🇳🇿 713 154 6ms 27 Oct 2024 483rd SirFireball3521 713 182 12ms 23 Nov 2022 484th NickTheEASDude 🇺🇸 712 227 21ms 19 Dec 2023 485th stackotter 712 337 134ms 29 May 2023 486th tianshuo 709 183 13ms 19 Jun 2019 486th Maznek 709 183 12ms 6 Feb 2025 488th jarekwg 709 228 21ms 26 Apr 2019 489th imreallybadatnames 709 366 2,057ms 16 Mar 2025 490th scpchicken 🇵🇼 708 125 4,504ms 8 Apr 2022 491st ovs-code 🇩🇪 708 188 495ms 8 Jun 2024 492nd edsrzf 🇳🇿 708 214 10ms 21 Apr 2025 493rd TimCurwick 🇺🇸 706 147 370ms 6 May 2021 493rd KevinMarquette 🇺🇸 706 147 378ms 27 Apr 2023 495th Ripick 706 229 23ms 1 Feb 2023 496th pschmid0 🇺🇸 704 156 6ms 31 Aug 2022 497th sean-niemann 🇺🇸 704 240 436ms 23 Jul 2024 498th ndren 702 209 590ms 30 Jan 2024 499th KatieLG 🇬🇧 701 185 13ms 3 Jun 2024 500th Shanethegamer 🇺🇸 701 261 4,434ms 27 Oct 2024 501st Shanethegamer 🇺🇸 701 342 135ms 19 May 2023 502nd splitlane 699 229 3ms 9 Mar 2023 503rd HumanEquivalentUnit 697 149 641ms 7 Oct 2020 504th primo-ppcg 🇹🇭 697 158 2,570ms 8 Feb 2022 505th biocommando 🇫🇮 697 186 20ms 27 May 2023 505th NickTheEASDude 🇺🇸 697 186 11ms 26 Jan 2024 507th TeodorDyakov 🇧🇬 696 150 2ms 26 Feb 2025 508th commandblockguy 🇺🇸 696 211 493ms 1 Sep 2025 509th dokutan 696 230 4ms 3 Apr 2024 510th MeWhenI 🇻🇦 696 283 287ms 9 Feb 2023 511th Yewzir 🇧🇪 696 373 1,851ms 21 May 2024 512th ovs-code 🇩🇪 695 245 253ms 8 Oct 2024 513th stefangimmillaro 695 275 41ms 14 Sep 2024 514th pandapawskat 694 187 12ms 16 Sep 2021 515th isaacg1 694 340 188ms 4 Jan 2020 516th adriweb 🇫🇷 693 231 5ms 19 Aug 2023 517th SirBogman 🇺🇸 691 107 5ms 26 Aug 2024 518th Indivicivet 691 234 403ms 23 Mar 2021 518th alexeldridge 691 234 20ms 12 Aug 2024 520th fitzdotlol 🇺🇸 690 188 11ms 28 Mar 2022 520th wh3n3v3r 🇨🇿 690 188 12ms 8 Nov 2024 520th iczelia 🇩🇪 690 188 12ms 22 Sep 2025 523rd snoozingnewt 🇨🇦 689 126 41ms 20 Oct 2025 524th mobibluman 686 189 11ms 1 Mar 2022 524th edsrzf 🇳🇿 686 189 11ms 19 Nov 2024 524th TeodorDyakov 🇧🇬 686 189 11ms 7 Jul 2025 527th H3XDaemon 686 194 65ms 19 Nov 2025 528th frozolotl 686 344 151ms 10 Jan 2020 529th Sticky-Bits 685 236 22ms 26 Apr 2019 529th Code-Coder-coder 685 236 29ms 25 days ago 531st snoozingnewt 🇨🇦 684 190 688ms 25 days ago 532nd jacobly0 🇺🇸 683 380 1,821ms 22 Apr 2024 533rd Natanaelel 🇸🇪 682 114 5ms 14 Oct 2021 534th UpwardProcess 682 161 5ms 31 Dec 2018 535th primo-ppcg 🇹🇭 682 169 977ms 4 Apr 2019 536th Natanaelel 🇸🇪 681 130 1,391ms 14 Oct 2021 537th billings7 🇬🇧 680 241 430ms 21 Nov 2021 538th lifthrasiir 🇰🇷 679 109 4ms 1 Dec 2024 539th RDShah 679 191 11ms 3 Feb 2020 539th dzshn 679 191 11ms 17 Aug 2022 541st Babafaba 679 238 26ms 17 Nov 2025 542nd janbehrens 🇩🇪 679 249 535ms 24 Apr 2023 543rd jared-hughes 678 128 48ms 12 Sep 2022 543rd 4hg 🇺🇸 678 128 48ms 11 Dec 2022 543rd jstanley0 678 128 39ms 18 Jan 2024 546th jared-hughes 678 170 590ms 3 Aug 2022 547th ovs-code 🇩🇪 676 115 6ms 23 Jul 2024 548th skps2010 676 192 11ms 2 Jan 2019 548th daisy-lau 676 192 12ms 31 Jul 2020 548th kellantech 676 192 12ms 9 days ago 551st mathb0y512 676 239 556ms 20 Aug 2024 552nd Shanethegamer 🇺🇸 676 323 150ms 27 Oct 2024 553rd jwhear 🇺🇸 674 385 1,831ms 30 Sep 2024 554th leon-w 672 193 11ms 5 Jan 2020 554th pfgithub 672 193 12ms 27 Oct 2020 554th gussy420 672 193 11ms 29 Oct 2023 554th dokutan 672 193 11ms 3 Aug 2024 558th jbyuki 672 238 4ms 28 Aug 2020 559th revlayle 🇺🇸 671 244 411ms 21 Nov 2021 560th mcreenan 670 116 6ms 6 Feb 2018 First Prev 481–560 of 1,408 Next Last