The Calendar hole will go live in approximately 13 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 320th edsrzf 🇳🇿 679 198 305ms 20 Aug 2025 322nd dokutan 677 62 36ms 31 Jan 2025 323rd DialFrost 🇸🇬 676 66 4ms 27 Jan 2025 324th SirBogman 🇺🇸 676 70 40ms 5 Feb 2025 325th dokutan 675 94 602ms 1 Feb 2025 326th Shanethegamer 🇺🇸 671 153 582ms 16 Feb 2025 327th MeWhenI 🇻🇦 669 211 12ms 26 Jan 2025 328th MeWhenI 🇻🇦 667 141 3ms 29 Jan 2025 329th 5cw 🇺🇸 666 104 19ms 1 Feb 2025 329th GrayJoKing 🇦🇺 666 104 18ms 2 Jul 2025 329th fourth-bit 666 104 19ms 23 Sep 2025 332nd AlephSquirrel 664 172 15ms 25 Jan 2025 333rd tayloia 🇬🇧 662 108 13ms 26 Jan 2025 333rd dokutan 662 108 13ms 1 Feb 2025 333rd coreynash 662 108 13ms 13 Feb 2025 336th MeWhenI 🇻🇦 662 155 834ms 27 Jan 2025 337th SirBogman 🇺🇸 660 105 18ms 29 Jan 2025 337th martindotexe 🇳🇴 660 105 12ms 14 Feb 2025 337th inventshah 660 105 14ms 14 Apr 2025 340th emgordon154 659 128 53ms 29 May 2025 341st olleicua 🇺🇸 656 109 11ms 9 Sep 2025 342nd CaedenHarper 🇨🇦 654 93 1,127ms 2 Oct 2025 343rd duckyluuk 🇳🇱 654 97 610ms 5 Feb 2025 344th j2e2 🇪🇸 652 154 27ms 14 Feb 2025 345th Shanethegamer 🇺🇸 649 97 148ms 16 Jan 2025 346th DialFrost 🇸🇬 648 107 18ms 26 Jan 2025 346th ahmetdemirag 🇨🇾 648 107 20ms 14 Feb 2025 346th xsot 🇸🇬 648 107 18ms 4 Jul 2025 349th emgordon154 648 200 218ms 18 Feb 2025 350th Salutations45 645 82 9ms 7 Oct 2025 351st dokutan 643 98 138ms 1 Feb 2025 352nd FlorianCassayre 🇫🇷 642 108 21ms 31 Jan 2025 352nd Bulmenisaurus 642 108 17ms 4 Feb 2025 352nd snoozingnewt 🇨🇦 642 108 21ms 1 Nov 2025 355th rucin93 🇵🇱 642 122 398ms 25 Jul 2025 356th jared-hughes 639 112 11ms 13 Feb 2025 357th btjones0 636 109 14ms 5 Feb 2025 357th Fvirgilio 636 109 14ms 4 Sep 2025 357th Babafaba 636 109 21ms 22 Oct 2025 360th dokutan 636 162 902ms 24 Sep 2025 361st tobeannouncd 635 192 191ms 25 Apr 2025 362nd MeWhenI 🇻🇦 634 147 157ms 30 Jan 2025 363rd the-zammers 632 193 181ms 2 Feb 2025 364th error256 630 110 18ms 17 Feb 2025 364th Kacarott 🇦🇺 630 110 17ms 17 Feb 2025 366th MeWhenI 🇻🇦 630 147 126ms 31 Jan 2025 367th gastropner 628 92 345ms 10 Feb 2025 368th MeWhenI 🇻🇦 627 97 949ms 15 Sep 2025 369th Shanethegamer 🇺🇸 626 141 124ms 6 Feb 2025 370th AlephSquirrel 624 111 18ms 31 Dec 2024 370th Natanaelel 🇸🇪 624 111 20ms 25 Jan 2025 370th Keegan-T 🇨🇦 624 111 15ms 20 Apr 2025 370th bzijlema 🇳🇱 624 111 17ms 27 Jun 2025 370th edsrzf 🇳🇿 624 111 18ms 20 Aug 2025 375th AlephSquirrel 622 102 902ms 25 Jan 2025 376th targrik 622 115 11ms 5 Feb 2025 377th madex 🇩🇪 619 152 3ms 9 Feb 2025 378th galloj 🇨🇿 618 68 34ms 30 Jan 2025 379th Shanethegamer 🇺🇸 617 150 121ms 6 Feb 2025 380th tatzyr 🇯🇵 616 80 52ms 26 Mar 2025 381st SirBogman 🇺🇸 616 103 691ms 30 Jan 2025 382nd MeWhenI 🇻🇦 616 121 176ms 8 Jul 2025 383rd targrik 615 123 69ms 24 days ago 384th Shanethegamer 🇺🇸 615 147 353ms 6 Feb 2025 385th commandblockguy 🇺🇸 613 113 17ms 28 Jan 2025 386th commandblockguy 🇺🇸 610 104 698ms 1 Sep 2025 386th snoozingnewt 🇨🇦 610 104 483ms 1 Nov 2025 388th Shanethegamer 🇺🇸 607 139 15ms 22 Feb 2025 389th Natanaelel 🇸🇪 607 201 209ms 20 Jun 2025 390th MeWhenI 🇻🇦 607 311 733ms 10 Feb 2025 391st DialFrost 🇸🇬 604 105 641ms 27 Jan 2025 391st Babafaba 604 105 415ms 22 Oct 2025 393rd MeWhenI 🇻🇦 602 241 33ms 29 Apr 2025 394th albanian-laundromat 602 345 13ms 45 hours ago 395th solisolu 597 116 14ms 6 Nov 2025 396th kdx2a 592 159 3ms 11 Feb 2025 397th LukeBridges 🇬🇧 591 121 13ms 4 Feb 2025 398th yeminghan2021 591 192 89ms 2 Feb 2025 399th blaztoma 🇱🇹 587 118 13ms 22 Sep 2025 400th voytxt 🇨🇿 586 322 661ms 1 Feb 2025 First Prev 321–400 of 673 Next Last