The Calendar hole will go live in approximately 13 days. Why not try and solve it ahead of time?
United States 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 561st iakolzin 546 187 2ms 5 Jul 2022 562nd msbranicky 546 312 314ms 31 Aug 2023 563rd boxjelly 546 315 132ms 5 Jan 2021 564th kurkale6ka 544 128 3ms 9 Jul 2021 565th Aurel300 🇨🇭 543 319 224ms 4 Jul 2024 566th Natanaelel 🇸🇪 542 139 50ms 19 Jul 2023 567th LostSyntax21 🇬🇧 538 140 37ms 5 Jul 2025 568th chartung17 538 195 11ms 20 Dec 2023 569th Natanaelel 🇸🇪 536 154 40ms 8 Nov 2023 570th dokutan 536 232 448ms 2 Nov 2025 571st MeWhenI 🇻🇦 536 309 2,091ms 7 Nov 2025 572nd yzzyx 535 318 313ms 21 Apr 2020 573rd pzagrebin 534 151 54ms 7 Jul 2022 574th Alex-x90 🇺🇸 532 192 2ms 8 Feb 2023 575th dokutan 531 142 39ms 11 Sep 2025 576th Troon 530 198 16ms 19 Aug 2025 577th annaproxy 527 204 457ms 19 May 2023 578th MeWhenI 🇻🇦 527 236 521ms 8 Jul 2022 579th MeWhenI 🇻🇦 526 453 11ms 19 Jul 2025 580th olleicua 🇺🇸 523 144 50ms 23 Apr 2025 581st CatsAreFluffy 523 154 56ms 16 Dec 2023 582nd msbranicky 523 267 3ms 12 Oct 2023 583rd HelloGravity 520 202 11ms 6 Aug 2022 583rd Artemis21 🇬🇧 520 202 17ms 4 Jan 2025 585th NewDefectus 🇮🇱 517 156 56ms 28 Jun 2021 586th olleicua 🇺🇸 514 197 11ms 13 Sep 2025 587th dokutan 514 202 142ms 28 Mar 2025 588th MeWhenI 🇻🇦 512 210 392ms 11 Oct 2023 589th Openstreetmapler 510 206 17ms 4 Oct 2025 590th tobeannouncd 510 337 132ms 9 Jan 2024 591st varhammer 🇷🇺 508 266 9ms 13 Dec 2023 592nd dokutan 506 202 2ms 12 Feb 2025 593rd yzhs 🇩🇪 505 208 10ms 2 Feb 2020 594th Natanaelel 🇸🇪 504 201 10ms 7 Jul 2022 594th Lv0Sys 🇵🇱 504 201 10ms 15 days ago 596th dokutan 503 164 982ms 29 Aug 2025 597th Brianzhengca 502 209 12ms 3 Feb 2021 598th GolfingSuccess 🇬🇷 502 339 6ms 23 Dec 2024 599th dbut2 🇦🇺 501 340 330ms 3 Jul 2025 600th underlein 499 270 691ms 4 Jul 2023 601st MeWhenI 🇻🇦 498 228 163ms 5 Sep 2023 602nd Feniske 🇫🇷 497 164 283ms 12 Nov 2023 603rd marcin7Cd 497 211 10ms 11 Dec 2020 604th KatieLG 🇬🇧 497 261 447ms 15 Jan 2023 605th staniec 490 214 10ms 6 Dec 2024 606th NDR0216 🇹🇼 488 215 14ms 8 Jul 2024 607th Haksell 🇦🇶 486 216 11ms 6 Apr 2020 608th Natanaelel 🇸🇪 484 156 208ms 30 Jul 2023 609th FlorianCassayre 🇫🇷 484 217 10ms 21 Oct 2023 610th Yewzir 🇧🇪 484 342 2,750ms 14 Nov 2025 611th dokutan 482 223 357ms 11 Feb 2025 612th boboquack 481 218 12ms 6 Nov 2023 613th SirFireball3521 477 220 9ms 9 Feb 2023 614th jackkav 476 213 11ms 14 Jun 2020 614th didion0 🇺🇸 476 213 10ms 20 Jul 2022 616th frankgraziano 474 159 36ms 29 Dec 2020 617th michelebastione 🇮🇹 473 222 10ms 26 Feb 2022 617th wen1now 473 222 17ms 8 Nov 2023 619th safaorhan 472 232 4,160ms 29 Oct 2024 620th neihousaigaai 471 223 9ms 5 Oct 2024 621st knutae 🇳🇴 469 224 10ms 16 Nov 2021 621st leon-w 469 224 11ms 24 Jul 2024 623rd stordev 467 225 10ms 26 Feb 2021 624th h3ra993huskp 🇯🇵 466 289 755ms 18 days ago 625th TheDrawingCoder-Gamer 465 300 2ms 4 Jul 2025 626th Natanaelel 🇸🇪 464 172 1,510ms 8 Jul 2022 627th quimey 464 226 10ms 3 Jul 2023 627th ahmetdemirag 🇨🇾 464 226 10ms 27 Oct 2024 629th InigoK 🇺🇸 462 227 13ms 5 May 2023 630th dymowski 460 228 15ms 2 Feb 2020 631st b10011 🇫🇮 458 221 10ms 18 Dec 2022 631st trinityy-7 458 221 10ms 17 Mar 2024 633rd Andriamanitra 🇫🇮 456 213 831ms 1 Sep 2022 634th cubed-guy 456 230 15ms 18 Oct 2021 634th joshmoody24 456 230 10ms 19 Nov 2025 636th adoxography 454 166 52ms 25 Feb 2020 637th fgrosshans 🇫🇷 454 231 12ms 16 Jul 2024 638th yzhs 🇩🇪 454 237 371ms 3 Jul 2022 639th MeWhenI 🇻🇦 454 805 8ms 13 Mar 2025 640th KatieLG 🇬🇧 452 309 3ms 10 Dec 2022 First Prev 561–640 of 1,391 Next Last
