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 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 81st annaproxy 881 113 18ms 2 May 2024 82nd ovs-code 🇩🇪 881 143 445ms 13 May 2024 83rd edsrzf 🇳🇿 881 154 43ms 23 Aug 2025 84th Natanaelel 🇸🇪 880 86 190ms 2 May 2024 85th edsrzf 🇳🇿 879 164 288ms 28 Jul 2025 86th edsrzf 🇳🇿 879 172 25ms 28 Jul 2025 87th emplv 🇱🇻 878 106 13ms 14 May 2024 88th edsrzf 🇳🇿 878 146 32ms 8 Aug 2025 89th edsrzf 🇳🇿 878 167 5ms 27 Jul 2025 90th canissimia 🇦🇶 878 275 91ms 9 May 2024 91st Steffan153 🇫🇮 876 71 1,774ms 2 May 2024 92nd stefangimmillaro 876 95 922ms 5 May 2024 93rd edsrzf 🇳🇿 876 162 130ms 29 Apr 2025 94th edsrzf 🇳🇿 876 188 26ms 13 Aug 2025 95th Steffan153 🇫🇮 875 104 468ms 2 May 2024 96th ovs-code 🇩🇪 875 122 180ms 2 May 2024 96th Natanaelel 🇸🇪 875 122 184ms 2 May 2024 98th kg583 🇺🇸 875 145 43ms 13 Feb 2025 99th edsrzf 🇳🇿 874 113 11ms 28 Jul 2025 100th ovs-code 🇩🇪 874 165 321ms 13 May 2024 101st duckyluuk 🇳🇱 870 188 248ms 15 Feb 2025 102nd Natanaelel 🇸🇪 869 52 53ms 1 Mar 2025 103rd edsrzf 🇳🇿 867 163 103ms 13 days ago 104th SirBogman 🇺🇸 867 181 1,248ms 13 May 2024 105th m-tkach 🇺🇦 867 190 59ms 29 Apr 2025 106th ovs-code 🇩🇪 867 230 469ms 4 Feb 2025 107th sean-niemann 🇺🇸 866 114 490ms 3 Feb 2025 108th GrayJoKing 🇦🇺 866 130 691ms 13 Sep 2024 109th albanian-laundromat 866 149 371ms 13 Nov 2025 110th SirBogman 🇺🇸 864 72 3,264ms 2 May 2024 111th jared-hughes 863 266 46ms 22 Dec 2024 112th vlpx 🇫🇮 862 108 14ms 1 Aug 2024 113th stefangimmillaro 860 88 74ms 5 May 2024 114th edsrzf 🇳🇿 860 259 1,701ms 13 Sep 2025 115th emplv 🇱🇻 853 135 6ms 13 May 2024 116th ovs-code 🇩🇪 852 73 1,993ms 8 May 2024 117th MostParsingVex 852 296 471ms 25 Sep 2024 118th bricknellj 851 116 13ms 13 May 2024 119th MeWhenI 🇻🇦 850 98 1,647ms 2 May 2024 120th kg583 🇺🇸 847 118 21ms 1 Nov 2025 121st edsrzf 🇳🇿 847 149 70ms 25 Aug 2025 122nd edsrzf 🇳🇿 846 121 2ms 27 Jul 2025 123rd kg583 🇺🇸 844 117 806ms 27 Jul 2025 124th Steffan153 🇫🇮 844 118 97ms 2 May 2024 125th MostParsingVex 844 623 3,911ms 3 Aug 2024 126th edsrzf 🇳🇿 843 105 145ms 11 Aug 2025 127th ovs-code 🇩🇪 843 108 475ms 14 May 2024 128th xsot 🇸🇬 839 105 69ms 18 May 2025 129th voytxt 🇨🇿 839 111 11ms 18 Jul 2024 130th saito-ta 🇯🇵 839 122 2ms 7 May 2024 131st ovs-code 🇩🇪 837 119 66ms 2 Jul 2024 132nd MeWhenI 🇻🇦 832 488 6ms 3 May 2024 133rd MeWhenI 🇻🇦 831 91 226ms 2 May 2024 134th Natanaelel 🇸🇪 830 75 1,818ms 3 May 2024 135th albanian-laundromat 829 150 34ms 22 Oct 2025 136th duckyluuk 🇳🇱 828 110 718ms 1 May 2024 137th sean-niemann 🇺🇸 828 155 127ms 5 May 2024 138th ovs-code 🇩🇪 826 151 370ms 14 May 2024 138th nwellnhof 🇩🇪 826 151 413ms 14 May 2024 140th ovs-code 🇩🇪 823 83 1,675ms 1 May 2024 141st duckyluuk 🇳🇱 823 120 20ms 1 May 2024 141st zacjl 823 120 20ms 4 May 2024 141st SirBogman 🇺🇸 823 120 17ms 20 May 2024 144th Shanethegamer 🇺🇸 822 130 179ms 1 May 2024 145th emgordon154 822 172 197ms 4 days ago 146th MeWhenI 🇻🇦 821 643 3ms 3 May 2024 147th pardouin 🇫🇷 820 111 462ms 23 Jun 2024 148th KatieLG 🇬🇧 820 644 2ms 9 Oct 2025 149th albanian-laundromat 817 109 936ms 26 Oct 2025 150th bzijlema 🇳🇱 816 121 19ms 16 Jul 2025 151st edsrzf 🇳🇿 815 153 360ms 28 Jul 2025 152nd sean-niemann 🇺🇸 814 161 102ms 3 May 2024 153rd edsrzf 🇳🇿 813 155 444ms 28 Jul 2025 154th MostParsingVex 813 158 435ms 21 Jan 2025 155th nwellnhof 🇩🇪 812 126 2ms 14 May 2024 156th stefangimmillaro 810 122 37ms 22 May 2024 157th emplv 🇱🇻 810 178 266ms 13 May 2024 158th Kacarott 🇦🇺 809 123 73ms 18 Jun 2024 159th nwellnhof 🇩🇪 808 155 76ms 14 May 2024 160th sean-niemann 🇺🇸 806 113 530ms 3 Feb 2025 First Prev 81–160 of 1,017 Next Last