The Calendar hole will go live in approximately 13 days. Why not try and solve it ahead of time?
N Queens 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 321st weliveinhell 🇭🇹 544 160 10ms 20 May 2024 322nd stefangimmillaro 543 264 263ms 29 May 2025 323rd akamayu-ouo 🇹🇼 534 75 5ms 12 Jul 2024 324th ahmetdemirag 🇨🇾 533 139 22ms 7 Mar 2025 325th CutSandstone 525 237 2,675ms 4 Jul 2024 326th jerrandolph 525 273 1,040ms 23 Sep 2025 327th stefangimmillaro 524 266 493ms 7 Oct 2025 328th alemelis 523 111 1,147ms 6 Oct 2024 329th stefangimmillaro 523 216 4,569ms 18 Dec 2024 330th ryyyn 🇺🇸 522 142 82ms 24 Jan 2025 331st rucin93 🇵🇱 521 158 770ms 2 May 2024 332nd bac0id 521 239 478ms 29 Jun 2024 333rd adriweb 🇫🇷 518 143 12ms 2 May 2024 334th NDR0216 🇹🇼 518 240 405ms 21 May 2024 335th targrik 515 169 12ms 21 Mar 2025 336th FortuiteMan 🇫🇷 512 121 95ms 21 days ago 336th TheZwierzLF 🇵🇱 512 121 76ms 5 hours ago 338th SirBogman 🇺🇸 511 199 683ms 14 May 2024 339th bac0id 510 243 392ms 29 Jun 2024 340th Yewzir 🇧🇪 508 146 26ms 4 May 2024 340th KasperKivimaeki 🇫🇮 508 146 14ms 10 days ago 342nd MostParsingVex 507 138 4,429ms 12 Dec 2024 343rd Alex-x90 🇺🇸 504 147 15ms 6 May 2024 344th MostParsingVex 503 227 221ms 28 Sep 2024 345th MichalMarsalek 🇨🇿 501 148 155ms 8 Aug 2024 346th rucin93 🇵🇱 499 255 30ms 6 Jun 2024 347th thienudomsrirungruang 498 149 39ms 3 May 2024 347th jacekwladzinski 498 149 35ms 5 Oct 2025 349th snydej 494 150 16ms 21 Nov 2024 349th zhaohm14 494 150 10ms 24 Jul 2025 349th CaedenHarper 🇨🇦 494 150 19ms 24 Jul 2025 352nd MeWhenI 🇻🇦 494 329 1,849ms 25 Jan 2025 353rd brimstonetrader 493 215 148ms 5 May 2024 354th BambooleanLogic 🇸🇪 489 178 13ms 14 May 2024 355th lynn 488 152 71ms 8 May 2024 355th qpwoeirut 488 152 23ms 1 Sep 2025 357th Yewzir 🇧🇪 486 146 370ms 4 May 2024 358th fourth-bit 485 153 66ms 30 Sep 2024 359th CaedenHarper 🇨🇦 483 147 513ms 24 Jul 2025 360th Shanethegamer 🇺🇸 483 195 40ms 23 May 2024 361st blaztoma 🇱🇹 481 154 58ms 28 Oct 2025 362nd CaedenHarper 🇨🇦 479 182 13ms 2 Sep 2025 363rd bac0id 479 212 2ms 29 Jun 2024 364th AlephSquirrel 478 155 39ms 1 May 2024 364th inventshah 478 155 36ms 1 May 2024 364th Bulmenisaurus 478 155 88ms 28 Jul 2024 364th andrewjc2000 478 155 102ms 7 Jul 2025 364th InigoK 🇺🇸 478 155 36ms 23 Aug 2025 364th commandblockguy 🇺🇸 478 155 56ms 1 Sep 2025 370th rucin93 🇵🇱 478 326 41ms 1 May 2024 371st SwordF-Official 477 230 8ms 18 Apr 2025 372nd dokutan 477 527 57ms 17 days ago 373rd commandblockguy 🇺🇸 476 149 579ms 1 Sep 2025 374th neihousaigaai 472 157 37ms 29 Sep 2024 375th h3ra993huskp 🇯🇵 471 296 532ms 18 days ago 376th jtaxen 469 158 30ms 2 May 2024 377th Chinay-Domitrix 🇺🇸 469 241 4,337ms 18 Mar 2025 378th Shanethegamer 🇺🇸 466 159 41ms 1 May 2024 378th YAJUE114514 466 159 14ms 4 days ago 380th elgan65536 466 218 2ms 3 May 2024 381st GolfingSuccess 🇬🇷 463 160 59ms 1 May 2024 381st mathisfun271 463 160 52ms 3 Oct 2024 383rd yoshykai 462 302 501ms 27 Mar 2025 384th annaproxy 460 161 44ms 7 May 2024 385th MostParsingVex 459 190 17ms 1 Jul 2024 386th CaedenHarper 🇨🇦 459 304 540ms 13 Oct 2025 387th yuchuehw 458 162 33ms 13 May 2024 387th Flekay 🇩🇪 458 162 33ms 11 Jul 2025 389th MostParsingVex 457 274 68ms 25 Jun 2024 390th HumanEquivalentUnit 455 217 34ms 10 May 2024 391st bac0id 454 307 446ms 29 Jun 2024 392nd Shanethegamer 🇺🇸 452 157 566ms 1 May 2024 393rd FortuiteMan 🇫🇷 447 166 31ms 21 days ago 394th emgordon154 445 254 4,549ms 7 Jul 2025 395th scpchicken 🇵🇼 444 167 41ms 7 May 2024 396th aksyristos 439 169 30ms 1 Sep 2024 397th msbranicky 434 171 41ms 1 May 2024 398th MostParsingVex 432 337 12ms 15 Dec 2024 399th MarcMush 🇫🇷 429 173 41ms 23 Nov 2024 400th Emutis 🇱🇹 426 174 18ms 18 Sep 2025 First Prev 321–400 of 1,010 Next Last