The Calendar hole will go live in approximately 10 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 560th wh3n3v3r 🇨🇿 567 188 12ms 8 Nov 2024 560th iczelia 🇩🇪 567 188 12ms 22 Sep 2025 563rd thbwd 566 180 141ms 21 Nov 2025 564th prplz 🇦🇺 566 183 2ms 14 Aug 2020 565th msbranicky 566 346 312ms 9 Jan 2025 566th primo-ppcg 🇹🇭 565 107 43ms 1 Nov 2021 567th m-tkach 🇺🇦 564 165 536ms 23 Apr 2025 568th KarstenHohmeier 564 172 5ms 7 Mar 2018 569th mobibluman 564 189 11ms 1 Mar 2022 569th edsrzf 🇳🇿 564 189 11ms 19 Nov 2024 569th TeodorDyakov 🇧🇬 564 189 11ms 7 Jul 2025 572nd emgordon154 564 203 2,420ms 25 Nov 2024 573rd cbrt-x 564 348 200ms 8 Oct 2023 573rd tobeannouncd 564 348 163ms 8 Jan 2024 575th HelloGravity 563 181 23ms 2 Aug 2022 575th inventshah 563 181 23ms 15 Nov 2022 575th fourth-bit 563 181 21ms 5 Dec 2022 575th thatbirdguythatuknownot 563 181 20ms 3 Feb 2024 579th janbehrens 🇩🇪 563 184 2ms 21 Mar 2022 580th MeWhenI 🇻🇦 560 108 53ms 30 Dec 2023 580th stefangimmillaro 560 108 58ms 26 Dec 2024 582nd keelimeguy 🇺🇸 560 182 15ms 17 Dec 2023 583rd RussellEmerine 559 351 141ms 10 Feb 2021 584th lacroixjonathan87 558 174 6ms 10 Aug 2020 585th RDShah 558 191 11ms 3 Feb 2020 585th dzshn 558 191 11ms 17 Aug 2022 587th MeWhenI 🇻🇦 558 205 1,219ms 26 Aug 2023 588th hellopatrick 558 438 37ms 29 Dec 2022 589th splitlane 557 229 3ms 9 Mar 2023 590th aditsu 557 325 4,299ms 11 Aug 2025 591st skps2010 555 192 11ms 2 Jan 2019 591st daisy-lau 555 192 12ms 31 Jul 2020 591st kellantech 555 192 12ms 12 days ago 594th Andrey135296 555 293 445ms 6 Oct 2023 595th Irratix 🇳🇱 554 238 396ms 3 Aug 2023 596th achimkrause 553 355 207ms 20 Dec 2019 597th cmdrsabre 553 431 111ms 31 Jan 2020 598th ovs-code 🇩🇪 552 67 93ms 17 Jul 2024 599th leon-w 552 193 11ms 5 Jan 2020 600th arcpolaris 552 295 482ms 11 Nov 2025 601st JunkIce 551 185 467ms 13 Feb 2025 601st 5cw 🇺🇸 551 185 21ms 3 May 2025 603rd sean-niemann 🇺🇸 551 188 5ms 3 Jun 2022 604th martin-viggiano 551 355 272ms 1 Jul 2022 605th olivermrose 🇺🇸 550 110 45ms 14 Sep 2021 606th drabart 🇵🇱 550 240 96ms 8 Dec 2023 607th snoozingnewt 🇨🇦 550 433 110ms 20 Oct 2025 608th IISResetMe 549 158 578ms 26 days ago 609th ovs-code 🇩🇪 549 164 133ms 17 Apr 2025 610th stefangimmillaro 548 186 21ms 6 Mar 2023 610th bizy-coder 548 186 21ms 23 Oct 2023 612th inventshah 548 189 5ms 2 Apr 2025 613th Natanaelel 🇸🇪 547 132 6ms 25 Oct 2023 614th MateuszPietrzak 🇵🇱 547 241 544ms 8 Dec 2023 615th bluebear94 546 195 12ms 4 Feb 2018 615th wansacis 🇩🇪 546 195 11ms 23 Jul 2021 615th smclaughlin-cf 546 195 11ms 11 Jun 2025 618th malworthy 546 298 413ms 12 Oct 2023 619th Pimentero 🇷🇺 545 178 5ms 9 Nov 2022 620th Bulmenisaurus 545 187 21ms 3 May 2025 621st dbut2 🇦🇺 544 360 290ms 15 Jul 2025 622nd Kacarott 🇦🇺 544 398 10ms 23 Jul 2024 623rd nking07049925 543 196 11ms 2 Jun 2024 623rd unfinishedprogram 543 196 11ms 20 Sep 2024 623rd alexsave 543 196 13ms 5 Nov 2025 626th luuumine 🇫🇷 542 188 18ms 9 Oct 2025 627th Alex-x90 🇺🇸 542 191 2ms 11 Jul 2023 628th adlerzei 542 300 435ms 3 May 2022 629th arjanadriaanse 🇳🇱 542 362 187ms 24 Nov 2021 630th HumanoidCPU 541 172 399ms 31 Mar 2025 631st ForkKILLET 🇨🇳 541 197 1,053ms 29 Jul 2021 631st TheRealOhead 🇺🇸 541 197 14ms 4 Apr 2023 633rd ericlangedijk 🇸🇮 541 301 402ms 21 Mar 2022 634th jerrandolph 541 362 312ms 22 Dec 2023 635th jared-hughes 539 189 21ms 19 Jan 2023 636th JRaspass 🇬🇧 539 363 280ms 23 Sep 2022 637th lowlighter 538 198 12ms 1 Nov 2020 638th m4c0 538 245 87ms 26 Jan 2022 638th Herbert00709 🇵🇱 538 245 480ms 12 Apr 2024 640th rucin93 🇵🇱 538 309 215ms 10 Jul 2025 First Prev 561–640 of 1,400 Next Last