The Calendar hole will go live in approximately 6 days. Why not try and solve it ahead of time?
√2 in Python 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 320th cmdrsabre 710 69 11ms 30 Jan 2020 320th artyom-razinov 710 69 12ms 13 Feb 2020 320th HemangRajvanshy 710 69 12ms 1 Apr 2020 320th msrawson 710 69 12ms 14 May 2020 320th PyPylia 🇦🇺 710 69 11ms 7 Aug 2020 320th billylanchantin 710 69 12ms 23 Aug 2020 320th magnickolas 710 69 13ms 29 Aug 2020 320th WillowBee7 710 69 11ms 28 Sep 2020 320th ralsei 710 69 11ms 6 Oct 2020 320th jdrouvin 710 69 12ms 2 Dec 2020 320th befoster 710 69 9ms 10 Apr 2021 320th StHagel 710 69 12ms 7 May 2021 320th 8Bit1Byte 710 69 12ms 20 Jun 2021 320th Fmbalbuena 710 69 12ms 17 Sep 2021 320th Ted-Barrett 🇦🇺 710 69 11ms 29 Sep 2021 320th forlack 710 69 11ms 8 Nov 2021 320th shibacho 🇯🇵 710 69 12ms 27 Nov 2021 320th pecholsjones 710 69 12ms 12 Dec 2021 320th CuboidRaptor 🇨🇦 710 69 12ms 3 Apr 2022 320th MakkCH 710 69 11ms 24 Apr 2022 320th CarsonChr 🇺🇸 710 69 12ms 18 Sep 2022 320th bonevbs 710 69 12ms 20 Nov 2022 320th KevinLyvers 710 69 12ms 13 Dec 2022 320th jtaxen 710 69 12ms 4 Jan 2023 320th SucukMitEi 710 69 12ms 7 Jan 2023 320th atazzam 🇺🇸 710 69 12ms 5 Mar 2023 320th DrPiranoid 710 69 12ms 26 Mar 2023 320th Hortaros 710 69 11ms 15 Apr 2023 320th willdaspit 710 69 11ms 4 Aug 2023 320th XioR112 🇵🇱 710 69 13ms 29 Aug 2023 320th jameswmccarty 710 69 12ms 6 Jun 2024 320th dtbao20 🇻🇳 710 69 12ms 8 Oct 2024 320th sciencedjinn 710 69 12ms 8 Nov 2024 320th Unknownuserfrommars 710 69 13ms 21 Nov 2024 320th yokasuretsu 710 69 9ms 31 Dec 2024 320th clayboll99 710 69 12ms 10 Jul 2025 320th webmiche 710 69 12ms 3 Nov 2025 358th petar-donchev 700 70 46ms 1 Sep 2019 358th cubed-guy 700 70 53ms 20 Sep 2021 358th kenny14231 700 70 11ms 9 Oct 2021 358th GioacchinoGT02 700 70 12ms 3 Dec 2024 362nd teddyward 690 71 12ms 9 Jan 2021 362nd xkacer 🇨🇿 690 71 12ms 25 Jan 2021 362nd sadfun 690 71 12ms 29 Jan 2021 362nd ArmaanAS 690 71 9ms 24 Mar 2021 362nd classAndrew 690 71 12ms 1 Aug 2021 362nd SpareManiKatti 690 71 9ms 10 Sep 2021 362nd JGDoerrer 690 71 11ms 22 Jan 2022 362nd lovernj 690 71 12ms 7 Feb 2022 362nd elephantpanda 690 71 9ms 31 Aug 2022 362nd sandorstormen 690 71 12ms 25 Nov 2022 362nd Vinterion 690 71 11ms 24 Jul 2023 362nd sulphemi 690 71 12ms 5 Oct 2023 362nd davidsaltacc 690 71 12ms 16 Nov 2023 362nd dal548 690 71 13ms 12 Jun 2024 362nd Mabeloid 🇳🇴 690 71 12ms 6 Sep 2024 362nd rustykitty 🇺🇸 690 71 13ms 25 Oct 2025 362nd muslii4 690 71 12ms 4 Nov 2025 379th paralysedforce 681 72 23ms 24 Nov 2020 379th AkashTandon167 681 72 9ms 1 Nov 2021 379th Bananapants22 681 72 12ms 16 Aug 2022 379th CatsAreFluffy 681 72 11ms 19 Feb 2023 379th Anthony-Williams-06 681 72 24ms 17 Oct 2023 384th trist224 🇫🇷 671 73 11ms 25 Dec 2022 384th TaserTheFox 🇺🇸 671 73 23ms 9 Feb 2023 384th Datadramah 671 73 13ms 12 Jan 2024 384th jacekwladzinski 671 73 12ms 6 Oct 2025 388th alangodfrey 662 74 25ms 10 Jun 2019 388th ay2718 662 74 13ms 19 Aug 2019 388th Wodinthemighty 662 74 12ms 4 May 2021 388th osmith93 662 74 9ms 31 Jul 2021 388th jamespeilunli 662 74 23ms 29 Dec 2021 388th OSYCh314 🇦🇺 662 74 23ms 9 Nov 2024 394th daedals 653 75 16ms 5 Jun 2019 394th jacklynnepenick 653 75 9ms 26 Aug 2021 394th za3k 653 75 58ms 8 Oct 2022 394th JonahEMorgan 653 75 12ms 9 Nov 2024 398th cole-wilson 645 76 23ms 10 Mar 2021 398th estomagordo 🇳🇱 645 76 22ms 9 Dec 2021 398th hjcafaroUC 645 76 22ms 21 Jun 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