The Calendar hole will go live in approximately 13 days. Why not try and solve it ahead of time?
brainfuck 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 641st MeWhenI 🇻🇦 538 454 38ms 14 Jun 2023 642nd AlephSquirrel 537 190 23ms 31 May 2023 642nd CaedenHarper 🇨🇦 537 190 21ms 16 Oct 2025 644th blaztoma 🇱🇹 537 455 137ms 19 days ago 645th Johannesd3 536 193 2ms 9 Apr 2021 646th jbyuki 536 238 4ms 28 Aug 2020 647th arvidjonasson 536 246 410ms 8 Jun 2025 648th eranws 535 199 11ms 17 Oct 2022 649th DialFrost 🇸🇬 535 202 40ms 28 Feb 2025 650th OllieBoyne 🇬🇧 534 191 23ms 7 Apr 2022 650th htareque 534 191 21ms 12 Oct 2023 652nd pandapawskat 533 182 5ms 9 Sep 2021 652nd jb-lopez 🇺🇸 533 182 5ms 8 Nov 2021 654th zakariamouhid 533 200 12ms 4 Jun 2023 655th alemelis 532 159 1,505ms 15 Aug 2024 656th dokutan 532 248 81ms 28 Jun 2025 657th rak1507 🇬🇧 531 192 21ms 21 Oct 2021 657th LogicalJoe 531 192 23ms 17 Oct 2022 659th marshallward 🇺🇸 531 356 44ms 6 May 2025 660th mrmena 🇦🇺 531 369 278ms 29 Mar 2024 661st Argeento 🇵🇱 530 170 142ms 3 Aug 2024 662nd Natanaelel 🇸🇪 528 193 26ms 11 Apr 2024 663rd h3ra993huskp 🇯🇵 528 335 486ms 18 days ago 664th marcin7Cd 526 194 26ms 24 Jul 2021 664th scpchicken 🇵🇼 526 194 21ms 22 Jan 2023 664th zhaohm14 526 194 20ms 22 Jul 2025 667th rak1507 🇬🇧 524 156 36ms 2 Nov 2021 668th christiankuhl 523 195 22ms 29 May 2021 669th MeWhenI 🇻🇦 523 318 180ms 10 Sep 2022 670th uttumuttu 🇫🇮 522 204 26ms 4 Jan 2022 670th xShadowBlade 522 204 11ms 26 Dec 2024 672nd aliakseikalosha 521 339 448ms 14 Jun 2020 673rd bizy-coder 520 179 593ms 20 Jan 2024 674th decorator-factory 520 196 23ms 15 Aug 2019 674th Secozzi 520 196 21ms 14 Jan 2021 676th Flying-Toast 520 199 2ms 17 Apr 2024 677th yevgeniyredko 520 313 399ms 3 Oct 2023 677th Skellybob56 520 313 391ms 12 Nov 2025 679th cbrt-x 520 340 431ms 14 Sep 2023 680th Shanethegamer 🇺🇸 519 309 350ms 6 May 2023 681st RDShah 518 197 22ms 19 Jan 2021 681st P-Quentin 🇫🇷 518 197 15ms 9 Aug 2022 681st InigoK 🇺🇸 518 197 21ms 23 Sep 2025 681st JOrE20 🇺🇸 518 197 19ms 15 days ago 685th msbranicky 518 321 11ms 10 Aug 2023 686th nwellnhof 🇩🇪 517 97 5ms 22 May 2022 687th Shanethegamer 🇺🇸 517 284 252ms 5 Oct 2024 688th bac0id 517 315 370ms 20 Sep 2023 689th hacker112 🇸🇪 515 207 11ms 22 Jun 2024 689th daniel-cardone 515 207 12ms 5 Jul 2025 691st ILMTitan 515 316 432ms 21 Nov 2021 691st jwalaszek 515 316 407ms 21 Nov 2021 693rd CaedenHarper 🇨🇦 514 181 475ms 16 Oct 2025 694th Shanethegamer 🇺🇸 514 415 25ms 31 Oct 2021 695th weliveinhell 🇭🇹 513 458 202ms 4 Oct 2023 696th proton 🇩🇪 512 118 49ms 9 Jun 2020 697th neel11235813 512 202 2ms 27 Mar 2024 698th strattonwhisler 512 208 12ms 29 Jun 2023 699th DialFrost 🇸🇬 511 182 496ms 28 Jul 2024 700th janbehrens 🇩🇪 511 190 6ms 2 Jul 2023 701st cros107 🇦🇺 510 200 21ms 29 Jun 2024 701st andrewjc2000 510 200 22ms 10 Jul 2025 703rd ShiraJoseph 🇺🇸 510 209 12ms 12 Feb 2023 704th DubiousDoggo 510 631 1,066ms 2 Dec 2021 705th AlephSquirrel 509 183 444ms 22 Jan 2024 706th edsrzf 🇳🇿 509 225 129ms 23 Mar 2025 707th jwonagel 509 320 405ms 2 Jun 2025 708th ovs-code 🇩🇪 508 279 4ms 22 Jul 2023 709th kkoenig 508 385 381ms 23 Jan 2024 709th CaedenHarper 🇨🇦 508 385 290ms 17 Nov 2025 711th face0xff 507 201 22ms 18 Oct 2021 711th AGoyet 507 201 21ms 16 Jul 2022 713th Kibble 507 210 13ms 11 Jul 2020 713th 52525rr 507 210 12ms 20 Oct 2025 715th weliveinhell 🇭🇹 507 321 384ms 18 Jul 2024 716th scpchicken 🇵🇼 506 99 21ms 28 Feb 2023 717th khuldraeseth 505 202 25ms 11 Apr 2018 717th blaztoma 🇱🇹 505 202 20ms 15 Nov 2025 719th jacobly0 🇺🇸 505 253 3ms 3 Sep 2023 720th fisherthomas14 505 350 561ms 27 May 2021 First Prev 641–720 of 1,399 Next Last