The Calendar hole will go live in approximately 13 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 320th rucin93 🇵🇱 932 52 133ms 3 Aug 2024 320th sean-niemann 🇺🇸 932 52 140ms 4 Aug 2024 320th lukegustafson 🇺🇸 932 52 141ms 5 Aug 2024 320th JayXon 🇺🇸 932 52 135ms 10 Aug 2024 320th GrayJoKing 🇦🇺 932 52 138ms 14 Aug 2024 320th emplv 🇱🇻 932 52 140ms 29 Oct 2024 327th KasperKivimaeki 🇫🇮 932 109 7ms 1 Apr 2025 327th HPWiz 🇳🇿 932 109 10ms 23 Sep 2025 329th lyphyser 931 58 88ms 9 Mar 2024 330th Lydxn 🇨🇦 931 91 385ms 21 Nov 2021 330th tomtheisen 🇺🇸 931 91 383ms 29 Jan 2023 332nd rambox11 930 54 8ms 26 May 2019 332nd nwellnhof 🇩🇪 930 54 9ms 31 Oct 2021 332nd DialFrost 🇸🇬 930 54 19ms 27 Jan 2023 332nd ovs-code 🇩🇪 930 54 19ms 6 May 2023 332nd trinityy-7 930 54 19ms 1 Feb 2024 332nd Ultra814 930 54 8ms 6 Oct 2025 338th SirBogman 🇺🇸 930 98 346ms 18 Apr 2020 338th iznax 930 98 324ms 18 Jul 2020 338th nwellnhof 🇩🇪 930 98 302ms 5 Oct 2020 338th primo-ppcg 🇹🇭 930 98 290ms 5 Oct 2020 338th argusdusty 🇺🇸 930 98 339ms 26 Dec 2020 338th JayXon 🇺🇸 930 98 316ms 28 Dec 2020 338th doge1338 930 98 376ms 20 Mar 2021 338th sisyphus-ppcg 🇦🇺 930 98 278ms 18 Jun 2021 338th Lydxn 🇨🇦 930 98 311ms 18 Jun 2021 338th MeWhenI 🇻🇦 930 98 381ms 30 Jan 2022 338th emplv 🇱🇻 930 98 296ms 13 Dec 2022 338th Steffan153 🇫🇮 930 98 275ms 14 Jan 2023 338th sean-niemann 🇺🇸 930 98 266ms 29 Aug 2023 338th stefangimmillaro 930 98 268ms 28 Oct 2023 338th Yewzir 🇧🇪 930 98 297ms 28 Oct 2023 338th kkoenig 930 98 269ms 5 Jan 2024 338th edsrzf 🇳🇿 930 98 269ms 22 Sep 2024 338th pardouin 🇫🇷 930 98 296ms 5 Oct 2024 338th emgordon154 930 98 261ms 18 Jan 2025 338th fuzzylojik-golf 🇺🇸 930 98 280ms 16 Jul 2025 338th CaedenHarper 🇨🇦 930 98 281ms 10 Nov 2025 359th Lydxn 🇨🇦 929 66 1,279ms 28 Dec 2021 360th JayXon 🇺🇸 928 60 112ms 5 Apr 2023 360th Lydxn 🇨🇦 928 60 120ms 1 Aug 2023 362nd AlephSquirrel 926 27 360ms 24 Jul 2022 362nd saito-ta 🇯🇵 926 27 120ms 26 Jul 2022 362nd GrayJoKing 🇦🇺 926 27 41ms 25 Aug 2022 362nd ovs-code 🇩🇪 926 27 138ms 26 Jun 2024 366th jslip 925 28 47ms 31 Jul 2019 366th NewDefectus 🇮🇱 925 28 34ms 28 Jan 2022 368th andersk 🇺🇸 925 29 52ms 4 Mar 2023 368th perlebach 🇨🇿 925 29 53ms 6 Jun 2025 370th primo-ppcg 🇹🇭 924 45 120ms 18 Sep 2023 370th Kacarott 🇦🇺 924 45 68ms 13 Sep 2024 372nd ovs-code 🇩🇪 924 56 1,597ms 5 Jan 2025 373rd dvargas46 🇺🇸 924 98 3,494ms 29 Mar 2023 374th nwellnhof 🇩🇪 923 37 137ms 18 Oct 2021 374th GrayJoKing 🇦🇺 923 37 573ms 12 Jan 2022 374th primo-ppcg 🇹🇭 923 37 195ms 6 Jan 2025 374th pardouin 🇫🇷 923 37 99ms 12 Jun 2025 378th Lydxn 🇨🇦 923 50 9ms 9 Jan 2022 379th primo-ppcg 🇹🇭 923 96 1,231ms 9 Jun 2024 379th Steffan153 🇫🇮 923 96 2,024ms 31 Aug 2024 379th sean-niemann 🇺🇸 923 96 2,429ms 2 Sep 2024 382nd ovs-code 🇩🇪 923 110 10ms 18 Jul 2025 383rd pardouin 🇫🇷 920 58 866ms 16 Oct 2025 384th Lydxn 🇨🇦 920 84 197ms 3 Jun 2022 384th JayXon 🇺🇸 920 84 194ms 14 Nov 2022 384th MeWhenI 🇻🇦 920 84 192ms 16 Nov 2022 384th DialFrost 🇸🇬 920 84 189ms 20 Aug 2024 388th guliyevemil1 🇦🇿 920 99 304ms 18 Apr 2020 388th bendiscz 920 99 347ms 18 Apr 2020 390th GrayJoKing 🇦🇺 918 111 241ms 14 Jul 2025 390th sean-niemann 🇺🇸 918 111 203ms 19 Jul 2025 392nd JayXon 🇺🇸 916 83 534ms 12 Mar 2022 393rd ovs-code 🇩🇪 916 113 2,295ms 4 May 2024 394th lynn 915 67 1,251ms 30 Nov 2021 394th JayXon 🇺🇸 915 67 1,259ms 16 Oct 2025 396th Lydxn 🇨🇦 914 80 114ms 2 Mar 2023 397th prplz 🇦🇺 913 55 29ms 25 Oct 2019 397th NewDefectus 🇮🇱 913 55 9ms 11 Feb 2021 399th GrayJoKing 🇦🇺 913 61 123ms 29 May 2022 400th andersk 🇺🇸 913 148 135ms 29 Nov 2022 First Prev 321–400 of 2,828 Next Last