The Calendar hole will go live in approximately 10 days. Why not try and solve it ahead of time?
Billiards 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 321st croc54 547 253 11ms 5 Jan 2025 322nd snoozingnewt 🇨🇦 540 321 120ms 21 Nov 2025 323rd voytxt 🇨🇿 539 218 10ms 1 Dec 2024 324th h3ra993huskp 🇯🇵 539 340 405ms 21 days ago 325th FlorianCassayre 🇫🇷 538 257 13ms 5 Aug 2025 326th blaztoma 🇱🇹 535 344 121ms 23 days ago 327th Emutis 🇱🇹 526 263 10ms 4 Nov 2025 328th TheZwierzLF 🇵🇱 520 245 588ms 9 days ago 329th aksyristos 518 267 10ms 1 Dec 2024 330th mathisfun271 512 270 16ms 25 Jan 2025 331st Jacob385 506 362 429ms 28 Oct 2025 332nd Shotokhan 503 275 13ms 25 Sep 2025 333rd LuisGoncalves05 🇵🇹 501 276 10ms 29 Jul 2025 333rd SB-945 501 276 11ms 10 Sep 2025 335th bac0id 498 304 464ms 10 Jan 2025 336th olleicua 🇺🇸 489 191 39ms 11 Jun 2025 337th madex 🇩🇪 489 283 10ms 25 Nov 2024 338th JOrE20 🇺🇸 486 379 124ms 16 days ago 339th PyryL 🇫🇮 485 285 14ms 8 Dec 2024 339th mbittner20 485 285 10ms 10 Feb 2025 341st OllieBoyne 🇬🇧 484 286 14ms 6 Dec 2024 341st matsagad 484 286 10ms 12 Dec 2024 343rd BREMAUCY 🇫🇷 480 288 11ms 22 Aug 2025 344th zakariamouhid 479 245 9ms 30 Nov 2024 344th gigaprofisi 🇺🇸 479 245 10ms 5 Jul 2025 346th jerrandolph 470 398 274ms 25 Sep 2025 347th Maashau 464 280 2ms 18 days ago 348th WillowWispy 464 298 10ms 21 Apr 2025 349th madex 🇩🇪 461 255 10ms 15 Dec 2024 350th bac0id 459 283 3ms 10 Jan 2025 351st msbranicky 459 424 3ms 20 Jan 2025 352nd ShiraJoseph 🇺🇸 448 262 11ms 9 Dec 2024 353rd Ripick 445 212 696ms 11 Jul 2025 354th dokutan 441 392 5ms 18 days ago 355th Babafaba 440 314 17ms 17 Nov 2025 356th TheZwierzLF 🇵🇱 434 215 51ms 6 hours ago 357th acollett89 433 271 10ms 17 Jul 2025 358th JDiLenarda 🇫🇷 433 459 1,626ms 26 Jun 2025 359th tomh1012 427 371 380ms 15 Aug 2025 360th retrohun 417 332 10ms 7 Dec 2024 361st galloj 🇨🇿 407 340 10ms 4 Dec 2024 362nd Babafaba 402 317 723ms 17 Nov 2025 363rd 123mjb 400 346 11ms 24 days ago 364th StefanHabel 🇨🇦 392 353 17ms 28 Mar 2025 365th dokutan 390 301 11ms 5 Jun 2025 366th AidanWalter 390 355 13ms 24 days ago 367th jameswmccarty 382 362 14ms 17 Feb 2025 368th msbranicky 378 366 10ms 5 Jan 2025 369th rollershutter 375 369 21ms 24 Feb 2025 370th alphafalfa 371 250 3ms 1 Aug 2025 371st dokutan 370 374 19ms 29 Apr 2025 372nd Andriamanitra 🇫🇮 368 254 39ms 8 Jun 2025 373rd TimSvensson 368 376 14ms 9 Apr 2025 374th dokutan 365 397 104ms 29 Apr 2025 375th TRexOnGit 357 329 11ms 20 Nov 2025 376th dokutan 357 366 156ms 5 Jun 2025 377th msbranicky 355 421 3,931ms 7 Jan 2025 378th dokutan 348 329 889ms 30 Aug 2025 379th dokutan 348 366 693ms 29 Apr 2025 380th dokutan 338 276 46ms 5 Jun 2025 381st JOrE20 🇺🇸 333 353 9ms 20 days ago 382nd dokutan 330 468 2ms 29 Apr 2025 383rd dokutan 327 295 827ms 29 Apr 2025 384th CarterStroik 324 476 3ms 6 days ago 385th nullshallot 319 326 2,055ms 3 Jan 2025 386th CarterStroik 310 591 416ms 7 Nov 2025 387th The-Wolfson 307 564 138ms 8 Feb 2025 388th Zhenyu-Bo 293 472 11ms 30 Jul 2025 389th Keegan-T 🇨🇦 292 473 14ms 14 Apr 2025 390th ravnskjaer 🇩🇰 283 647 320ms 6 days ago 391st billythekid 282 455 4ms 6 Jun 2025 392nd Schmitt-Very-Cool 273 672 545ms 26 Sep 2025 393rd zt14427 254 544 14ms 27 Dec 2024 394th MeWhenI 🇻🇦 242 388 4ms 16 Nov 2025 395th the-zammers 234 612 153ms 1 Dec 2024 396th madeforlosers 190 618 9ms 8 May 2025 397th evan18c 177 783 11ms 15 Apr 2025 398th JOrE20 🇺🇸 159 1,140 52ms 9 hours ago 399th JOrE20 🇺🇸 153 1,508 117ms 20 days ago 400th dokutan 133 1,086 11ms 30 Jun 2025 First Prev 321–400 of 464 Next Last