The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 5 hours. Why not try and solve them ahead of time?
N Queens 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 Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions 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 Multitap Input 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 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript 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 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> ALGOL 68 ArkScript 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 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily 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 Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions 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 Multitap Input 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 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 321st dokutan 633 144 561ms 21 Jun 2024 322nd MostParsingVex 632 140 4,619ms 6 days ago 323rd neihousaigaai 630 157 40ms 29 Sep 2024 323rd Babafaba 630 157 55ms 25 Oct 2025 325th jtaxen 626 158 31ms 2 May 2024 326th albanian-laundromat 624 146 579ms 6 Nov 2025 327th DialFrost 🇸🇬 623 225 420ms 24 Sep 2025 328th Shanethegamer 🇺🇸 622 159 42ms 1 May 2024 328th jatloe 622 159 36ms 11 May 2024 328th YAJUE114514 622 159 14ms 14 Dec 2025 331st elgan65536 🇺🇸 622 210 159ms 7 Feb 2026 332nd CatsAreFluffy 621 165 367ms 30 Oct 2025 333rd FortuiteMan 🇫🇷 620 121 87ms 27 Nov 2025 334th CaedenHarper 🇨🇦 620 147 537ms 24 Jul 2025 334th snoozingnewt 🇨🇦 620 147 459ms 17 Feb 2026 336th GolfingSuccess 🇬🇷 618 160 62ms 1 May 2024 336th mathisfun271 618 160 52ms 3 Oct 2024 338th DialFrost 🇸🇬 616 139 122ms 19 Jun 2025 339th MostParsingVex 616 148 528ms 17 Aug 2024 340th annaproxy 614 161 44ms 7 May 2024 341st lifthrasiir 🇰🇷 612 67 12ms 30 Nov 2024 342nd commandz0 🇺🇸 612 149 523ms 1 Sep 2025 343rd yuchuehw 610 162 34ms 13 May 2024 344th 051 🇸🇬 607 163 62ms 7 Jan 2026 345th Shanethegamer 🇺🇸 606 195 40ms 23 May 2024 346th anter69 🇭🇺 604 131 1,373ms 11 days ago 347th ethanlally 604 232 593ms 1 Dec 2025 347th snoozingnewt 🇨🇦 604 232 478ms 5 Dec 2025 349th a6166231 🇨🇳 599 154 12ms 18 Jun 2025 350th KatieLG 🇬🇧 596 126 56ms 8 May 2025 351st emgordon154 596 153 603ms 9 Apr 2025 352nd HumanoidCPU 596 166 30ms 30 Oct 2024 352nd FortuiteMan 🇫🇷 596 166 32ms 27 Nov 2025 354th scpchicken 🇵🇼 592 167 43ms 7 May 2024 355th MeWhenI 🇻🇦 592 220 252ms 6 May 2024 356th roguh 🇬🇹 591 187 13ms 14 Oct 2024 357th MostParsingVex 591 193 2,739ms 11 Nov 2024 358th madeforlosers 591 226 38ms 11 Apr 2025 359th targrik 589 195 47ms 28 Nov 2025 360th Babafaba 588 155 624ms 25 Oct 2025 361st olleicua 🇺🇸 588 157 12ms 24 Oct 2024 362nd MostParsingVex 588 280 2,937ms 16 Jan 2025 363rd alemelis 584 117 1,048ms 6 Oct 2024 364th KatieLG 🇬🇧 584 156 555ms 8 Apr 2025 365th MostParsingVex 582 176 2ms 16 Oct 2024 366th Shanethegamer 🇺🇸 580 157 667ms 1 May 2024 367th CaedenHarper 🇨🇦 580 249 281ms 12 Nov 2025 368th varhammer 579 218 44ms 28 May 2024 369th msbranicky 578 171 41ms 1 May 2024 370th weliveinhell 🇭🇹 577 160 11ms 20 May 2024 371st retrohun 575 172 102ms 2 Feb 2026 372nd alexsave 573 161 1,132ms 14 Jan 2026 373rd yzhs 🇩🇪 572 173 14ms 5 May 2024 373rd MarcMush 🇫🇷 572 173 41ms 23 Nov 2024 375th Emutis 🇱🇹 568 174 18ms 18 Sep 2025 376th madeforlosers 566 163 11ms 11 Apr 2025 377th hellwue 565 175 33ms 24 Jul 2024 377th wh3n3v3r 🇨🇿 565 175 39ms 12 Nov 2024 377th JOrE20 565 175 20ms 18 Feb 2026 380th elgan65536 🇺🇸 562 176 22ms 2 May 2024 380th RaBa21 🇭🇺 562 176 37ms 1 Aug 2025 382nd JOrE20 562 293 27ms 15 Feb 2026 383rd jmerle 🇳🇱 559 177 45ms 6 Jul 2024 383rd croc54 559 177 13ms 15 Dec 2024 385th dokutan 558 142 1,352ms 23 Apr 2025 386th mousetail 🇳🇱 555 178 22ms 2 May 2024 387th HumanoidCPU 552 165 574ms 30 Oct 2024 388th kistlerf 🇨🇭 552 179 37ms 30 May 2025 389th SB-945 549 180 45ms 2 May 2024 389th AstroOrbis 549 180 23ms 11 Feb 2026 391st akamayu-ouo 🇹🇼 547 75 5ms 12 Jul 2024 392nd stefangimmillaro 547 264 313ms 29 May 2025 393rd MostParsingVex 547 409 1,721ms 4 days ago 394th targrik 546 169 15ms 21 Mar 2025 395th 77Tigers 546 181 55ms 17 May 2024 396th Apfelvater 543 182 36ms 21 days ago 397th dokutan 540 139 94ms 23 Apr 2025 398th emgordon154 540 171 1,153ms 23 days ago 399th nstearns96 🇬🇧 540 183 38ms 22 Aug 2024 400th Natanaelel 🇸🇪 537 184 82ms 3 May 2024 First Prev 321–400 of 1,069 Next Last