The Calendar hole will go live in approximately 3 days. Why not try and solve it ahead of time?
√2 in Python 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 400th jacklynnepenick 653 75 9ms 26 Aug 2021 400th za3k 653 75 58ms 8 Oct 2022 400th JonahEMorgan 653 75 12ms 9 Nov 2024 404th cole-wilson 645 76 23ms 10 Mar 2021 404th estomagordo 🇳🇱 645 76 22ms 9 Dec 2021 404th hjcafaroUC 645 76 22ms 21 Jun 2022 404th Cube14yt 645 76 17ms 19 Nov 2025 408th eggplants 🇯🇵 636 77 9ms 26 Nov 2020 408th tomh1012 636 77 9ms 7 Jun 2021 408th CedricGebistorf 636 77 9ms 12 Mar 2022 408th juef17 636 77 23ms 11 Jun 2024 408th robin-scragg 636 77 13ms 28 Sep 2025 413th lukasthaler 628 78 11ms 11 Sep 2020 413th madeforlosers 628 78 9ms 5 Sep 2024 413th olikmujnyhbtgvfc 628 78 12ms 22 Nov 2024 413th kasarino 628 78 1,322ms 24 Nov 2025 417th eiburns 620 79 11ms 21 Jan 2023 417th AndrewDTR 620 79 12ms 8 Feb 2023 417th Vaekor 620 79 9ms 9 Jul 2023 417th liam824css 620 79 11ms 2 Mar 2025 417th Andrey135296 620 79 158ms 6 May 2025 422nd TJK-S 613 80 14ms 28 Oct 2025 423rd geofft 605 81 89ms 13 Dec 2020 423rd xAspirus 605 81 11ms 29 Mar 2022 423rd camzach 605 81 12ms 24 Jun 2024 423rd NickTheEASDude 🇺🇸 605 81 26ms 20 Aug 2024 423rd WillowWispy 605 81 9ms 20 Mar 2025 423rd 52525rr 605 81 12ms 4 May 2025 429th abailey2020 🇺🇸 598 82 38ms 13 Dec 2020 430th lhulinsky 583 84 116ms 22 Oct 2024 431st dyc3 576 85 9ms 2 Jul 2020 431st amollberg 🇸🇪 576 85 18ms 25 Jan 2022 431st jmmographer 576 85 12ms 22 Oct 2023 431st adamnielson42 🇺🇸 576 85 25ms 5 Dec 2023 431st roguh 🇬🇹 576 85 23ms 9 Jan 2024 431st rifatx 576 85 13ms 24 Jul 2024 431st aalec 576 85 58ms 8 Nov 2025 438th elteammate 570 86 22ms 7 Jul 2020 438th yasufumy 570 86 12ms 15 Jul 2020 438th Mathrew2012 570 86 10ms 13 Jun 2025 441st ssilwa 563 87 14ms 2 Jun 2019 441st twocatsinatrenchcoat 563 87 23ms 19 Nov 2021 441st jstechman 563 87 10ms 24 Feb 2024 441st CutSandstone 563 87 156ms 3 Jul 2024 445th martinnorling 🇸🇪 557 88 14ms 29 Mar 2022 445th andre-lameirinhas 🇵🇹 557 88 12ms 17 Nov 2022 447th Festyve 551 89 11ms 18 Mar 2023 447th anonymaew 551 89 22ms 2 Aug 2023 447th nemulilonala 551 89 12ms 22 Nov 2024 450th benjitorres 538 91 12ms 29 Dec 2022 451st zuparnowa 527 93 13ms 29 May 2019 451st henrytranter 527 93 12ms 20 Sep 2019 451st NatNgs 527 93 9ms 7 Jan 2020 454th LukasFolwarczny 🇨🇿 521 94 154ms 15 Sep 2022 454th BlankSpruce 521 94 60ms 2 Oct 2022 454th Bodo171 521 94 89ms 27 Nov 2022 457th nullie 516 95 16ms 18 Jun 2022 458th Arridian 510 96 23ms 27 Sep 2021 458th VictorFordham 510 96 35ms 16 Dec 2023 460th draxler-h 495 99 13ms 14 Jan 2023 460th felixcroc 495 99 12ms 30 Mar 2023 460th jaydity 495 99 13ms 10 Feb 2024 460th Code-Coder-coder 495 99 663ms 23 Nov 2025 464th SniperSmiley 🇺🇸 490 100 181ms 2 Jun 2022 465th petroselo 485 101 94ms 13 Apr 2022 465th ejini6969 485 101 12ms 23 Mar 2023 465th qwjhvbxi 485 101 12ms 4 Mar 2024 468th brian6liu 480 102 68ms 8 May 2020 468th AodhanDalton 480 102 12ms 8 Nov 2022 470th AaronHe7 476 103 12ms 21 Nov 2022 470th Mikey-Beep 🇬🇧 476 103 60ms 2 Jun 2024 472nd boxjelly 467 105 18ms 8 Jan 2021 472nd ms-tingliang 467 105 48ms 5 Aug 2022 472nd randolchance 467 105 90ms 11 Feb 2023 475th joonaspu 462 106 25ms 3 Jun 2023 476th TorbjornBak 458 107 12ms 8 Nov 2024 477th Pena86 450 109 11ms 2 Mar 2021 477th dhruvkumaragrawal85 450 109 12ms 9 Mar 2024 479th Urbi111 445 110 13ms 22 Oct 2020 480th AcidicNic 438 112 11ms 30 Sep 2020 First 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