The Calendar hole will go live in approximately 3 days. Why not try and solve it ahead of time?
Look and Say 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 639th MeWhenI 🇻🇦 737 38 43ms 25 Aug 2022 639th AlephSquirrel 737 38 45ms 2 Jul 2023 643rd Yewzir 🇧🇪 737 107 75ms 9 Mar 2024 644th janbehrens 🇩🇪 736 49 3ms 17 Jan 2021 645th HETHAT 🇩🇿 735 98 10ms 4 Oct 2022 645th janbehrens 🇩🇪 735 98 16ms 17 Jun 2023 645th ahmetdemirag 🇨🇾 735 98 10ms 7 Oct 2024 648th Shanethegamer 🇺🇸 735 130 2ms 26 May 2023 649th emplv 🇱🇻 735 163 268ms 16 Dec 2020 650th Protothor 733 79 9ms 22 Jul 2025 651st SmileTheory 733 102 1ms 7 Jan 2021 652nd Shanethegamer 🇺🇸 732 206 488ms 25 Jan 2025 653rd Shanethegamer 🇺🇸 731 113 121ms 21 Jun 2024 654th snoozingnewt 🇨🇦 728 113 3,679ms 27 Sep 2025 655th ScottHamper 728 143 444ms 30 Nov 2025 656th ludwig-n 727 99 10ms 5 Apr 2021 656th gilufin 727 99 12ms 21 Jun 2021 656th schachmattmatt 727 99 12ms 11 Aug 2021 656th KatieLG 🇬🇧 727 99 10ms 8 Jun 2022 656th jhpaques 🇫🇷 727 99 10ms 29 Jul 2022 656th aksyristos 727 99 10ms 6 Feb 2023 656th TaserTheFox 🇺🇸 727 99 10ms 8 May 2023 656th suwat513 727 99 11ms 19 Jun 2023 656th quimey 727 99 15ms 26 Jun 2023 656th htareque 727 99 10ms 18 Nov 2023 656th SB-945 727 99 11ms 23 Feb 2024 656th RobertHoeh 727 99 11ms 2 Dec 2024 656th andrewjc2000 727 99 10ms 28 Feb 2025 656th plcc0 727 99 10ms 18 Mar 2025 656th cefqrn 727 99 10ms 10 Jul 2025 671st revlayle 🇺🇸 724 123 342ms 21 Nov 2021 672nd not-optikk 🇺🇸 724 132 2ms 1 Dec 2020 673rd iczelia 🇩🇪 722 50 3ms 19 Oct 2025 674th pschmid0 🇺🇸 722 97 5ms 1 Oct 2022 675th OllieBoyne 🇬🇧 720 100 9ms 17 Sep 2021 675th face0xff 720 100 14ms 19 Oct 2021 675th pascscha 720 100 14ms 28 Mar 2022 675th osmith93 720 100 11ms 28 Jun 2022 675th fredrik-bakke 🇳🇴 720 100 10ms 5 Oct 2022 675th tri1212 🇻🇳 720 100 10ms 28 Oct 2023 675th AtengChen 720 100 13ms 31 Aug 2024 675th moustave 720 100 14ms 19 Nov 2024 675th TheZwierzLF 🇵🇱 720 100 10ms 25 May 2025 675th jtaxen 720 100 11ms 15 Oct 2025 675th JOrE20 🇺🇸 720 100 11ms 4 days ago 686th SirBogman 🇺🇸 718 39 43ms 12 Sep 2022 687th GolfingSuccess 🇬🇷 718 91 351ms 15 Jan 2024 688th JRaspass 🇬🇧 715 49 134ms 4 Dec 2020 689th jakzo 715 81 9ms 5 Sep 2021 690th ehulinsky 🇺🇸 713 101 11ms 10 Nov 2021 690th commandblockguy 🇺🇸 713 101 14ms 17 Nov 2023 690th hellwue 713 101 11ms 21 Jun 2024 690th hiichbindermax 713 101 10ms 21 Jun 2024 690th souta-1326 713 101 15ms 1 Apr 2025 695th HallMatthew314 712 107 120ms 18 Jan 2022 695th JoaoFelipe3 712 107 118ms 14 Jan 2024 697th MeWhenI 🇻🇦 711 92 360ms 24 May 2024 698th stefangimmillaro 709 170 126ms 4 Jun 2025 699th albanian-laundromat 708 114 71ms 15 Nov 2025 700th pzagrebin 706 47 48ms 7 Jul 2022 701st stefangabos 🇷🇴 706 82 8ms 7 Jun 2023 701st sebipopa 🇷🇴 706 82 9ms 8 Jun 2023 701st junkondo-jp 706 82 9ms 28 May 2024 704th AkashTandon167 706 102 11ms 2 Dec 2020 704th abba23 706 102 10ms 13 Jun 2021 704th olavaga 706 102 10ms 15 Aug 2021 704th Anonymousellama21 706 102 14ms 15 Jun 2022 704th Mikey-Beep 🇬🇧 706 102 12ms 17 Jun 2022 704th bob-th 706 102 10ms 6 Aug 2022 704th grave367 706 102 11ms 5 Mar 2023 704th msbranicky 706 102 12ms 10 Aug 2023 704th m42km 706 102 13ms 25 Nov 2023 704th eddvrs 706 102 10ms 22 Dec 2023 704th sultan 706 102 10ms 5 Mar 2024 704th Languag3 706 102 9ms 9 Oct 2024 704th KasperKivimaeki 🇫🇮 706 102 10ms 10 Jul 2025 717th KasperKivimaeki 🇫🇮 706 106 2ms 10 Nov 2025 718th Yewzir 🇧🇪 706 135 102ms 28 Mar 2024 719th olivermrose 🇺🇸 705 108 138ms 31 Aug 2021 720th stefangimmillaro 704 170 270ms 11 Oct 2023 First Prev 641–720 of 2,041 Next Last