The Calendar hole will go live in approximately 8 days. Why not try and solve it ahead of time?
√2 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 781st mueller14003 707 68 12ms 8 Oct 2020 781st thisishowmymindworks 🇳🇴 707 68 47ms 14 Oct 2020 781st davidverweij 707 68 12ms 21 Oct 2020 781st martinsifrar 707 68 12ms 23 Oct 2020 781st KatieLG 🇬🇧 707 68 12ms 1 Nov 2020 781st Dazza314 🇬🇧 707 68 11ms 6 Nov 2020 781st austinrwarner 707 68 12ms 25 Dec 2020 781st Tess2662 707 68 12ms 11 Jan 2021 781st fynnkroeger 707 68 11ms 20 Jan 2021 781st ydevor 🇮🇱 707 68 12ms 22 Feb 2021 781st asadullayev 707 68 12ms 3 Mar 2021 781st orifu 707 68 11ms 19 Mar 2021 781st josephjojoe 707 68 12ms 19 Mar 2021 781st enbyte 707 68 12ms 21 May 2021 781st harrymwilkins 🇬🇧 707 68 12ms 18 Jul 2021 781st RYNO8 707 68 12ms 7 Aug 2021 781st ngocbd 🇻🇳 707 68 12ms 31 Aug 2021 781st potato-jackson 707 68 12ms 6 Sep 2021 781st ToE42 707 68 11ms 7 Sep 2021 781st ehulinsky 🇺🇸 707 68 14ms 16 Sep 2021 781st redbeancola 707 68 12ms 11 Oct 2021 781st walterfeyman 707 68 12ms 30 Oct 2021 781st xy3 🇮🇪 707 68 12ms 18 Nov 2021 781st sleepyStick 707 68 12ms 7 Dec 2021 781st akshatj27 🇦🇶 707 68 12ms 11 Jan 2022 781st Bonjour27891 🇻🇳 707 68 11ms 10 Feb 2022 781st LeeCamp 707 68 12ms 15 Feb 2022 781st SomeKitten 🇺🇸 707 68 12ms 20 Aug 2022 781st suwat513 707 68 11ms 23 Sep 2022 781st ValentinCassayre 707 68 12ms 9 Oct 2022 781st aksyristos 707 68 12ms 30 Oct 2022 781st tpasfieldERAU 707 68 12ms 9 Nov 2022 781st Omega65536 🇩🇪 707 68 11ms 23 Nov 2022 781st jfallon1997 707 68 12ms 3 Jan 2023 781st Smoncko 707 68 12ms 1 Feb 2023 781st DragonaireM 707 68 12ms 6 Feb 2023 781st m3nt0ras 🇬🇷 707 68 12ms 16 Feb 2023 781st crispshaker 707 68 23ms 18 Mar 2023 781st MiranDaniel 🇨🇿 707 68 11ms 29 Apr 2023 781st sd3b 707 68 11ms 1 May 2023 781st ZoeyKD 707 68 12ms 14 May 2023 781st Ripick 707 68 12ms 22 May 2023 781st msbranicky 707 68 12ms 10 Jul 2023 781st cingulataluke 707 68 12ms 26 Aug 2023 781st bac0id 707 68 11ms 20 Sep 2023 781st Stockoh 🇫🇷 707 68 12ms 5 Nov 2023 781st keelimeguy 🇺🇸 707 68 11ms 6 Nov 2023 781st firegene 🇮🇪 707 68 11ms 24 Nov 2023 781st m42km 707 68 12ms 8 Dec 2023 781st zwxzwxzwx21 707 68 12ms 13 Dec 2023 781st epic-programmer-guy 707 68 11ms 17 Dec 2023 781st smokestacklightnin 🇺🇸 707 68 12ms 29 Dec 2023 781st Dataen 707 68 12ms 12 Jan 2024 781st scpchicken 🇵🇼 707 68 12ms 1 Feb 2024 781st Just4FunCoder 707 68 12ms 26 Feb 2024 781st roupiq 🇵🇱 707 68 11ms 27 Feb 2024 781st sultan 707 68 11ms 9 Mar 2024 781st vgamula 🇺🇦 707 68 12ms 18 May 2024 781st stertooy 🇧🇪 707 68 11ms 11 Jun 2024 781st LHLaurini 🇧🇷 707 68 12ms 5 Jul 2024 781st codingisgreatbutiamnot 707 68 15ms 14 Jul 2024 781st HumanoidCPU 707 68 12ms 29 Aug 2024 781st voytxt 🇨🇿 707 68 12ms 13 Sep 2024 781st starfihs 707 68 12ms 26 Feb 2025 781st gigaprofisi 🇺🇸 707 68 11ms 2 Mar 2025 781st 0dyse 707 68 12ms 29 Apr 2025 781st codewrite 🇬🇧 707 68 12ms 7 May 2025 781st Voltrifrodec 🇸🇰 707 68 11ms 14 May 2025 781st JOrE-Softwares 707 68 12ms 21 May 2025 781st BenjaminHGong 707 68 12ms 23 May 2025 781st sainiayush 707 68 12ms 14 Jul 2025 781st GoldStar184 707 68 12ms 17 Jul 2025 781st addmai 707 68 12ms 26 Jul 2025 781st cthierfelder 🇲🇨 707 68 12ms 7 Aug 2025 781st Upload-and-View 🇺🇦 707 68 12ms 9 Aug 2025 781st Andrey2001 707 68 12ms 8 days ago 877th TheRealOhead 🇺🇸 707 71 26ms 31 Mar 2023 877th Protothor 707 71 20ms 9 Jul 2025 877th iczelia 🇩🇪 707 71 20ms 10 Oct 2025 880th LHLaurini 🇧🇷 706 84 119ms 5 Jul 2024 First Prev 801–880 of 2,828 Next Last
