The Calendar hole will go live in approximately 13 days. Why not try and solve it ahead of time?
Cubes 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 Maashau 445 390 3ms 23 days ago 642nd shen-hong-xin 444 213 9ms 9 Jul 2021 642nd jfallon1997 444 213 9ms 16 Aug 2022 642nd StefanHabel 🇨🇦 444 213 9ms 12 Dec 2022 645th lukasmoellerch 444 267 9ms 15 Jul 2019 646th janbehrens 🇩🇪 444 391 1ms 3 Jan 2022 647th p-vf 🇨🇭 443 388 388ms 21 Nov 2021 648th MichalMarsalek 🇨🇿 443 826 3ms 25 Dec 2022 649th hjcafaroUC 442 214 9ms 1 Aug 2020 649th AlephSquirrel 442 214 10ms 8 Jul 2022 649th lomarbrick 442 214 9ms 22 May 2023 649th stefangimmillaro 442 214 11ms 19 Jun 2023 649th lhulinsky 442 214 9ms 21 Oct 2024 649th qpwoeirut 442 214 9ms 16 Sep 2025 655th mrmena 🇦🇺 441 393 43ms 10 Jun 2024 656th jjgry 440 215 9ms 1 Mar 2021 656th jhpaques 🇫🇷 440 215 9ms 21 Sep 2022 658th yzhs 🇩🇪 440 348 125ms 25 Jul 2021 659th olleicua 🇺🇸 440 832 3ms 15 Jul 2025 660th olleicua 🇺🇸 439 270 9ms 9 Feb 2024 661st astdefu 439 395 3ms 10 Dec 2022 662nd The3gs 438 216 10ms 13 Oct 2020 662nd abailey2020 🇺🇸 438 216 10ms 13 Dec 2020 662nd Pulencode 🇨🇨 438 216 10ms 14 Nov 2024 665th janbehrens 🇩🇪 438 433 2,671ms 20 Nov 2022 666th hamhub7 437 393 390ms 11 Aug 2022 667th KevinMarquette 🇺🇸 436 216 248ms 6 Jun 2020 668th knutae 🇳🇴 436 217 9ms 19 Jul 2019 668th bobbysq 436 217 10ms 22 Jul 2023 668th roguh 🇬🇹 436 217 10ms 20 Oct 2024 671st qzdl 436 381 7ms 20 Sep 2020 672nd raphaelimahorn 436 454 430ms 21 Oct 2020 673rd rambox11 435 399 3ms 12 Mar 2019 674th Pena86 435 445 182ms 2 Jan 2022 675th jared-hughes 434 191 46ms 11 Oct 2022 676th btjones0 434 218 19ms 15 Jul 2022 676th FranklinJiaChen 434 218 9ms 3 Jul 2024 676th EthanJantz 434 218 9ms 12 Aug 2025 679th adamnielson42 🇺🇸 434 273 9ms 25 Apr 2023 680th orthoplex 🇨🇽 433 693 2ms 9 Jun 2024 681st cubed-guy 432 219 9ms 21 Aug 2021 681st rowboat1 432 219 10ms 18 Jun 2022 681st NerdyMcNerd42 432 219 10ms 20 Aug 2022 681st smilesformiles3 432 219 10ms 14 Jun 2025 685th OllieBoyne 🇬🇧 430 220 12ms 2 Jun 2021 686th error256 430 340 39ms 29 Aug 2024 687th msbranicky 429 232 611ms 17 Jan 2024 688th bac0id 429 443 514ms 23 Feb 2024 689th NanduBC 428 221 9ms 18 Mar 2021 689th RandGuy 428 221 9ms 7 Sep 2022 689th aksyristos 428 221 10ms 29 Dec 2022 689th codingisgreatbutiamnot 428 221 10ms 14 Aug 2024 689th NotEvenIndian 428 221 10ms 22 Oct 2024 694th trinityy-7 428 277 9ms 5 Dec 2023 695th alexkunin 427 278 9ms 2 Jul 2019 696th eshilo-draper 426 222 9ms 1 Aug 2023 696th inverseLorentz 🇦🇺 426 222 9ms 9 May 2024 696th Ythaenagor 426 222 10ms 5 Aug 2024 699th SpareManiKatti 425 279 9ms 13 Oct 2021 700th jngbsn 425 408 3ms 17 Jul 2020 701st CedricGebistorf 424 223 10ms 6 Mar 2022 701st Trusly 424 223 9ms 26 Feb 2024 703rd Shanethegamer 🇺🇸 424 334 70ms 18 May 2025 704th Florian-Mt 423 280 10ms 12 Jul 2024 705th giacomogallina 422 224 9ms 5 Jun 2019 705th AgathokakologicalBit 422 224 10ms 27 Jul 2019 705th Kloppermand 🇩🇰 422 224 10ms 8 Sep 2021 705th mbittner20 422 224 10ms 1 Jul 2024 709th roguh 🇬🇹 422 345 1ms 20 Oct 2024 710th mousetail 🇳🇱 422 411 3ms 26 Jan 2024 711th Domicnt 422 459 149ms 10 Jun 2020 712th za3k 420 225 10ms 15 Oct 2022 712th celiendonze 🇨🇭 420 225 9ms 25 May 2023 712th jbjd 420 225 9ms 2 Mar 2024 712th tomh1012 420 225 10ms 27 days ago 716th msbranicky 420 379 91ms 15 Aug 2023 717th Shanethegamer 🇺🇸 420 396 7ms 30 Aug 2024 718th sambirnbaum1 418 226 9ms 14 Oct 2019 718th mothcolada 🇺🇸 418 226 9ms 12 Apr 2021 718th aalec 418 226 9ms 25 Apr 2024 First Prev 641–720 of 1,656 Next Last
