The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 5 days. Why not try and solve them ahead of time?
99 Bottles of Beer in JavaScript 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 Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions 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 Multitap Input 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 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript 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 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> ALGOL 68 ArkScript 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 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily 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 Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions 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 Multitap Input 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 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 241st i-a-n 714 280 10ms 8 May 2018 241st Ranner198 714 280 12ms 14 Nov 2019 241st antonioawm 714 280 10ms 9 Apr 2020 241st E2dgar 714 280 9ms 31 Jan 2022 241st CaedenHarper 🇨🇦 714 280 9ms 31 Aug 2025 241st denis-jasselette 714 280 9ms 17 Oct 2025 247th Kibble 712 281 10ms 10 Jul 2020 247th joshop 712 281 10ms 19 Dec 2021 247th henrygagnier 712 281 12ms 20 Nov 2024 250th sbagasan 709 282 10ms 28 Apr 2020 250th mackereldev 709 282 11ms 27 Apr 2022 250th taylorzane 709 282 9ms 11 Aug 2022 250th FrederikHutfless 🇩🇪 709 282 10ms 23 Dec 2022 250th gazhay 709 282 9ms 2 Jan 2025 255th akinonyx 707 283 10ms 24 Mar 2021 256th pg98 704 284 9ms 14 Mar 2018 256th jdweeks 704 284 11ms 26 May 2020 256th jcheritat 704 284 10ms 7 Sep 2020 259th colraw 🇸🇪 702 285 11ms 21 Jan 2023 260th joakim-ronning 699 286 10ms 23 May 2023 261st Re-Adventures 🇮🇳 697 287 10ms 29 Apr 2021 261st Ivraj 697 287 10ms 9 Aug 2021 261st TheLazySquid 697 287 9ms 20 Dec 2022 264th haru-24 692 289 11ms 14 Jul 2022 264th non-bin 692 289 11ms 27 Jun 2025 264th stephanie-flower 692 289 10ms 17 Oct 2025 267th pablaber 690 290 10ms 2 Oct 2017 267th eikhr 🇳🇴 690 290 9ms 14 Jun 2021 269th Andrii-A 687 291 10ms 10 Apr 2020 269th snoozingnewt 🇨🇦 687 291 12ms 11 Oct 2025 271st bobsbeenjamin 🇺🇸 685 292 10ms 17 Dec 2020 272nd coramba 683 293 10ms 7 Apr 2019 272nd squadb3 683 293 9ms 31 Aug 2019 272nd ahorihan 683 293 10ms 3 Aug 2022 272nd krestaino 683 293 9ms 4 Aug 2022 272nd cmoedk 683 293 12ms 31 Oct 2022 272nd Isaac-NTT 683 293 10ms 16 Jun 2023 278th GiftOfDeath 680 294 9ms 5 Feb 2018 278th mukulkesh 680 294 9ms 9 Dec 2020 278th sech1p 🇵🇱 680 294 12ms 6 Oct 2022 281st synchromic 678 295 10ms 8 May 2020 281st Ashikpaul 🇮🇳 678 295 12ms 9 May 2021 281st pbarath 678 295 9ms 14 Jun 2021 281st gavinmorrow 678 295 9ms 19 Sep 2022 281st LarsFredrikHolstTry 678 295 10ms 30 Oct 2025 286th ethan7g 676 296 11ms 16 Apr 2020 286th boxjelly 676 296 11ms 23 Feb 2021 286th vang1ong7ang 676 296 10ms 29 Oct 2021 286th phpboyscout 676 296 9ms 15 Feb 2023 290th quirked-up 673 297 12ms 2 Sep 2023 290th Kesefon 673 297 10ms 16 Oct 2023 292nd ciaranmag 671 298 11ms 25 Jan 2019 292nd MrILL 671 298 9ms 31 Oct 2020 292nd tommy-dronkers 671 298 10ms 9 Dec 2020 292nd NathanGabrielson 671 298 10ms 25 Mar 2022 292nd otubby 671 298 12ms 25 Mar 2022 297th IchBinMichMarkus 669 299 11ms 5 Jul 2023 297th AnnoyedArt1256 669 299 13ms 8 Sep 2023 297th GeorgeSG 669 299 9ms 5 Dec 2023 297th SOONwasTaken 669 299 9ms 18 Oct 2025 301st JackWorman 667 300 9ms 11 Aug 2019 301st SpiritAxolotl 🇺🇸 667 300 10ms 22 Mar 2024 301st kydogia 667 300 10ms 28 Mar 2024 304th Great-Gamer 664 301 10ms 23 Feb 2022 305th JulianJJ 662 302 10ms 9 Dec 2020 305th K4rakara 662 302 10ms 12 Dec 2020 307th kwoisphiosm 660 303 10ms 14 May 2021 307th A11yship 660 303 10ms 2 Nov 2023 307th iliazeus 660 303 11ms 15 Feb 2024 307th jateute 660 303 10ms 10 Sep 2025 311th ianpoe 658 304 11ms 14 Mar 2020 312th lukasmoellerch 656 305 11ms 15 Jul 2019 312th hvanderdys 656 305 10ms 11 Dec 2019 314th patterson-tom 654 306 11ms 9 Sep 2020 314th d-capponi 🇦🇷 654 306 10ms 9 Jan 2021 314th mcculloughjchris 654 306 10ms 31 Oct 2022 314th HenryTy83 654 306 10ms 4 Dec 2022 314th vyx777 654 306 11ms 11 Jan 2025 319th eranws 651 307 9ms 24 Oct 2022 320th bobesa 649 308 11ms 13 Oct 2017 First Prev 241–320 of 489 Next Last
