The Calendar hole will go live in approximately 10 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 ovs-code 🇩🇪 716 67 93ms 17 Jul 2024 482nd Steffan153 🇫🇮 716 230 38ms 4 May 2024 483rd mossprescott 715 226 23ms 10 Jan 2023 484th edsrzf 🇳🇿 713 154 6ms 27 Oct 2024 485th SirFireball3521 713 182 12ms 23 Nov 2022 486th NickTheEASDude 🇺🇸 712 227 21ms 19 Dec 2023 487th stackotter 712 337 134ms 29 May 2023 488th tianshuo 709 183 13ms 19 Jun 2019 488th Maznek 709 183 12ms 6 Feb 2025 490th jarekwg 709 228 21ms 26 Apr 2019 491st imreallybadatnames 709 366 2,057ms 16 Mar 2025 492nd scpchicken 🇵🇼 708 125 4,504ms 8 Apr 2022 493rd ovs-code 🇩🇪 708 188 495ms 8 Jun 2024 494th edsrzf 🇳🇿 708 214 10ms 21 Apr 2025 495th TimCurwick 🇺🇸 706 147 370ms 6 May 2021 495th KevinMarquette 🇺🇸 706 147 378ms 27 Apr 2023 497th Ripick 706 229 23ms 1 Feb 2023 498th pschmid0 🇺🇸 704 156 6ms 31 Aug 2022 499th sean-niemann 🇺🇸 704 240 436ms 23 Jul 2024 500th ndren 702 209 590ms 30 Jan 2024 501st KatieLG 🇬🇧 701 185 13ms 3 Jun 2024 502nd Shanethegamer 🇺🇸 701 261 4,434ms 27 Oct 2024 503rd Shanethegamer 🇺🇸 701 342 135ms 19 May 2023 504th splitlane 699 229 3ms 9 Mar 2023 505th HumanEquivalentUnit 697 149 641ms 7 Oct 2020 506th primo-ppcg 🇹🇭 697 158 2,570ms 8 Feb 2022 507th biocommando 🇫🇮 697 186 20ms 27 May 2023 507th NickTheEASDude 🇺🇸 697 186 11ms 26 Jan 2024 509th TeodorDyakov 🇧🇬 696 150 2ms 26 Feb 2025 510th commandblockguy 🇺🇸 696 211 493ms 1 Sep 2025 511th dokutan 696 230 4ms 3 Apr 2024 512th MeWhenI 🇻🇦 696 283 287ms 9 Feb 2023 513th Yewzir 🇧🇪 696 373 1,851ms 21 May 2024 514th ovs-code 🇩🇪 695 245 253ms 8 Oct 2024 515th stefangimmillaro 695 275 41ms 14 Sep 2024 516th pandapawskat 694 187 12ms 16 Sep 2021 517th isaacg1 694 340 188ms 4 Jan 2020 518th adriweb 🇫🇷 693 231 5ms 19 Aug 2023 519th SirBogman 🇺🇸 691 107 5ms 26 Aug 2024 520th Indivicivet 691 234 403ms 23 Mar 2021 520th alexeldridge 691 234 20ms 12 Aug 2024 522nd fitzdotlol 🇺🇸 690 188 11ms 28 Mar 2022 522nd wh3n3v3r 🇨🇿 690 188 12ms 8 Nov 2024 522nd iczelia 🇩🇪 690 188 12ms 22 Sep 2025 525th snoozingnewt 🇨🇦 689 126 41ms 20 Oct 2025 526th mobibluman 686 189 11ms 1 Mar 2022 526th edsrzf 🇳🇿 686 189 11ms 19 Nov 2024 526th TeodorDyakov 🇧🇬 686 189 11ms 7 Jul 2025 529th H3XDaemon 686 194 65ms 19 Nov 2025 530th frozolotl 686 344 151ms 10 Jan 2020 531st Sticky-Bits 685 236 22ms 26 Apr 2019 531st Code-Coder-coder 685 236 29ms 23 Nov 2025 533rd snoozingnewt 🇨🇦 684 190 688ms 22 Nov 2025 534th jacobly0 🇺🇸 683 380 1,821ms 22 Apr 2024 535th Natanaelel 🇸🇪 682 114 5ms 14 Oct 2021 536th UpwardProcess 682 161 5ms 31 Dec 2018 537th primo-ppcg 🇹🇭 682 169 977ms 4 Apr 2019 538th Natanaelel 🇸🇪 681 130 1,391ms 14 Oct 2021 539th billings7 🇬🇧 680 241 430ms 21 Nov 2021 540th lifthrasiir 🇰🇷 679 109 4ms 1 Dec 2024 541st RDShah 679 191 11ms 3 Feb 2020 541st dzshn 679 191 11ms 17 Aug 2022 543rd Babafaba 679 238 26ms 17 Nov 2025 544th janbehrens 🇩🇪 679 249 535ms 24 Apr 2023 545th jared-hughes 678 128 48ms 12 Sep 2022 545th 4hg 🇺🇸 678 128 48ms 11 Dec 2022 545th jstanley0 678 128 39ms 18 Jan 2024 548th jared-hughes 678 170 590ms 3 Aug 2022 549th ovs-code 🇩🇪 676 115 6ms 23 Jul 2024 550th skps2010 676 192 11ms 2 Jan 2019 550th daisy-lau 676 192 12ms 31 Jul 2020 550th kellantech 676 192 12ms 12 days ago 553rd mathb0y512 676 239 556ms 20 Aug 2024 554th Shanethegamer 🇺🇸 676 323 150ms 27 Oct 2024 555th jwhear 🇺🇸 674 385 1,831ms 30 Sep 2024 556th leon-w 672 193 11ms 5 Jan 2020 556th pfgithub 672 193 12ms 27 Oct 2020 556th gussy420 672 193 11ms 29 Oct 2023 556th dokutan 672 193 11ms 3 Aug 2024 560th jbyuki 672 238 4ms 28 Aug 2020 First Prev 481–560 of 1,409 Next Last