The Calendar hole will go live in approximately 9 days. Why not try and solve it ahead of time?
Tic-tac-toe 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 159th sean-niemann 🇺🇸 845 122 802ms 24 Sep 2025 159th MeWhenI 🇻🇦 845 122 701ms 7 Nov 2025 163rd kg583 🇺🇸 845 135 279ms 15 hours ago 164th JayXon 🇺🇸 843 140 1,362ms 16 Feb 2025 165th albanian-laundromat 843 141 44ms 11 days ago 166th AdrienHache 🇫🇷 842 93 467ms 30 Jan 2025 167th MeWhenI 🇻🇦 841 63 1,507ms 13 Jul 2025 168th DialFrost 🇸🇬 840 50 33ms 26 Jan 2025 168th pardouin 🇫🇷 840 50 33ms 29 Jan 2025 168th stefangimmillaro 840 50 32ms 3 Feb 2025 171st nwellnhof 🇩🇪 840 112 3ms 21 Jul 2025 172nd edsrzf 🇳🇿 839 136 47ms 31 Jan 2025 173rd DialFrost 🇸🇬 838 123 639ms 24 Sep 2025 174th annaproxy 837 120 22ms 16 Feb 2025 175th keelimeguy 🇺🇸 835 83 13ms 27 Apr 2025 175th ndren 835 83 16ms 20 Jul 2025 177th emgordon154 835 226 842ms 29 May 2025 178th m-tkach 🇺🇦 834 174 35ms 5 May 2025 179th JayXon 🇺🇸 834 179 1,856ms 8 Feb 2025 180th albanian-laundromat 833 181 28ms 15 days ago 181st rucin93 🇵🇱 831 91 7ms 29 Jan 2025 181st sean-niemann 🇺🇸 831 91 7ms 30 Jan 2025 183rd edsrzf 🇳🇿 831 150 47ms 16 Aug 2025 184th antimon2 🇯🇵 828 74 610ms 27 Jan 2025 185th MeWhenI 🇻🇦 828 81 97ms 13 Jul 2025 185th edsrzf 🇳🇿 828 81 38ms 8 Nov 2025 187th DialFrost 🇸🇬 828 228 652ms 16 Feb 2025 188th Natanaelel 🇸🇪 826 61 291ms 31 Jan 2025 189th UnderKoen 🇳🇱 826 171 20ms 23 May 2025 190th DialFrost 🇸🇬 825 70 283ms 27 Jan 2025 191st plcc0 825 84 13ms 25 Feb 2025 191st KatieLG 🇬🇧 825 84 17ms 19 Oct 2025 193rd emgordon154 824 77 431ms 7 Jun 2025 194th primo-ppcg 🇹🇭 824 252 208ms 13 Aug 2025 195th 2bular 823 47 7ms 27 Jan 2025 196th stefangimmillaro 822 101 3,669ms 11 Jul 2025 197th anter69 🇭🇺 821 60 53ms 3 Feb 2025 198th sean-niemann 🇺🇸 819 145 49ms 31 Jan 2025 199th saito-ta 🇯🇵 818 115 4ms 9 Feb 2025 200th snoozingnewt 🇨🇦 815 85 27ms 17 hours ago 201st MeWhenI 🇻🇦 815 111 383ms 27 Jan 2025 202nd SirBogman 🇺🇸 815 162 43ms 3 Feb 2025 203rd albanian-laundromat 815 165 40ms 11 days ago 204th DialFrost 🇸🇬 813 67 11ms 31 Jan 2025 205th DialFrost 🇸🇬 813 90 80ms 27 Jan 2025 206th MeWhenI 🇻🇦 813 98 28ms 27 Jan 2025 207th ovs-code 🇩🇪 811 37 208ms 3 Feb 2025 207th saito-ta 🇯🇵 811 37 106ms 9 Feb 2025 209th DialFrost 🇸🇬 811 75 1,058ms 30 Aug 2025 210th snoozingnewt 🇨🇦 810 107 132ms 16 hours ago 211th inventshah 810 140 86ms 18 Apr 2025 212th stefangimmillaro 810 163 43ms 3 Feb 2025 213th ovs-code 🇩🇪 808 127 1,292ms 28 Jan 2025 214th DialFrost 🇸🇬 806 76 357ms 30 Jan 2025 215th canissimia 🇦🇶 806 210 28ms 3 Apr 2025 216th DialFrost 🇸🇬 805 94 6ms 30 Jan 2025 217th stefangimmillaro 805 115 138ms 12 Feb 2025 218th KasperKivimaeki 🇫🇮 804 141 94ms 26 Jan 2025 219th stackofbears 803 59 37ms 3 Feb 2025 220th DialFrost 🇸🇬 803 66 1,603ms 29 Jan 2025 221st MeWhenI 🇻🇦 802 72 224ms 13 Jul 2025 222nd edsrzf 🇳🇿 802 110 120ms 10 Jul 2025 223rd xsot 🇸🇬 801 66 5ms 31 Jan 2025 224th acotis 801 162 197ms 21 Sep 2025 225th MeWhenI 🇻🇦 800 149 70ms 29 Jan 2025 226th stefangimmillaro 799 98 430ms 30 Jan 2025 226th Yax42 🇫🇷 799 98 394ms 15 Apr 2025 226th nwellnhof 🇩🇪 799 98 405ms 21 Jul 2025 229th sisyphus-ppcg 🇦🇺 797 56 29ms 3 Feb 2025 230th MeWhenI 🇻🇦 796 95 6ms 13 Jul 2025 231st Natanaelel 🇸🇪 795 62 52ms 25 Jan 2025 232nd jared-hughes 794 325 87ms 16 Mar 2025 233rd sean-niemann 🇺🇸 793 80 413ms 2 Jul 2025 234th edsrzf 🇳🇿 793 130 651ms 24 Sep 2025 235th ovs-code 🇩🇪 791 119 3ms 27 Jan 2025 236th edsrzf 🇳🇿 790 69 11ms 19 Aug 2025 237th stefangimmillaro 790 170 357ms 31 Jan 2025 237th sean-niemann 🇺🇸 790 170 350ms 31 Jan 2025 239th albanian-laundromat 788 88 17ms 27 Jul 2025 240th lynn 787 155 231ms 20 Oct 2025 First Prev 161–240 of 675 Next Last