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 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 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 Chars Time Submitted 81st igmcdowell 662 216 11ms 22 Nov 2021 81st uttumuttu 🇫🇮 662 216 10ms 7 Mar 2022 81st Ephellon 662 216 10ms 16 Dec 2023 84th 52525rr 659 217 12ms 7 Jul 2025 85th roberttod 656 218 10ms 11 May 2018 85th neihousaigaai 656 218 9ms 27 Apr 2021 87th hpr 653 219 10ms 13 Jun 2021 87th dylanarmstrong 653 219 10ms 26 Jan 2024 89th efgen 650 220 9ms 8 Jun 2020 89th revlayle 🇺🇸 650 220 11ms 23 Mar 2021 89th jared-hughes 650 220 10ms 5 Apr 2022 89th CallanMcNulty 650 220 9ms 29 Sep 2022 93rd jakobwitte 647 221 9ms 23 Mar 2018 93rd EFHIII 647 221 10ms 7 Aug 2020 95th p01 644 222 10ms 30 Oct 2017 95th zakariamouhid 644 222 9ms 4 Jun 2023 95th janbehrens 🇩🇪 644 222 11ms 17 Jun 2023 95th Lv0Sys 🇵🇱 644 222 10ms 19 Feb 2026 99th omurakazuaki 🇯🇵 641 223 10ms 11 Feb 2021 99th olleicua 🇺🇸 641 223 12ms 15 Feb 2024 99th hacker112 🇸🇪 641 223 11ms 16 Jun 2024 99th Salutations45 641 223 9ms 10 Nov 2024 103rd LucasMartinsUthi 638 224 11ms 2 Jul 2025 104th Joshua0127 636 225 10ms 15 Sep 2019 104th rgthree 636 225 11ms 22 Aug 2023 106th caasinehc 630 227 10ms 16 Oct 2018 106th ShiraJoseph 🇺🇸 630 227 11ms 4 May 2022 106th Andrey-Plotnikov 630 227 10ms 1 Jan 2023 109th owenoclee 627 228 10ms 7 Oct 2017 109th saramaebee 627 228 11ms 15 Oct 2018 111th mintypython 624 229 9ms 15 Oct 2018 111th didion0 🇺🇸 624 229 9ms 14 Jan 2021 111th ForkKILLET 🇨🇳 624 229 10ms 18 Feb 2021 111th fitzdotlol 🇺🇸 624 229 9ms 28 Mar 2022 111th DayDun 🇸🇪 624 229 10ms 20 Jan 2023 111th ComradeSquirrel 624 229 10ms 18 hours ago 117th tigerdan2 🇩🇪 622 230 11ms 30 Nov 2025 118th vlad-ushakov 619 231 10ms 22 Mar 2023 119th alexkunin 616 232 11ms 4 Jul 2019 119th vroup 🇩🇰 616 232 10ms 23 Sep 2022 119th TheDarkThatBarks 616 232 9ms 30 Jan 2024 122nd sgtdck 614 233 13ms 6 Oct 2018 122nd PumpedSardines 614 233 10ms 18 Sep 2024 124th tomh1012 611 234 9ms 1 Oct 2020 124th RedstoneTim 611 234 10ms 29 Jun 2021 124th veiko 611 234 10ms 18 Jun 2022 127th dee-gomma 609 235 10ms 30 Mar 2019 127th GeorgeStechman 🇬🇧 609 235 10ms 19 Jun 2022 127th two-bad 🇬🇧 609 235 11ms 23 Jun 2022 127th jbt 609 235 9ms 26 Dec 2023 131st Gaspar-Cdv 606 236 12ms 11 Jun 2021 132nd wouterraateland 603 237 10ms 8 Jul 2019 132nd rope-hmg 603 237 8ms 19 Apr 2022 134th garytang8 601 238 10ms 15 Apr 2020 134th janlelis 601 238 10ms 11 Feb 2021 134th stefangabos 🇷🇴 601 238 10ms 16 Sep 2022 137th gurena-wm 598 239 10ms 10 Apr 2020 137th raphaelimahorn 598 239 11ms 17 Aug 2021 137th alex742 598 239 11ms 23 May 2024 137th TepidDrink 598 239 9ms 23 May 2024 141st user189032 596 240 10ms 29 May 2019 141st apraxWorkMarket 596 240 9ms 12 Apr 2020 141st frontvu 596 240 10ms 13 Apr 2020 141st TechNolaByte 596 240 9ms 18 Jun 2021 145th TomHanra 591 242 10ms 9 Oct 2017 145th ohailstorm 591 242 12ms 18 Jul 2018 145th jburghes 591 242 10ms 13 Apr 2020 145th exortech 591 242 10ms 22 May 2021 145th yishayv 591 242 9ms 18 Jan 2023 150th oliverwoodings 588 243 10ms 21 May 2018 150th jn-lp 🇺🇦 588 243 12ms 31 Oct 2020 150th ershadi-sayuri 588 243 10ms 14 Oct 2021 153rd darrylyeo 586 244 10ms 18 Dec 2019 153rd SpareManiKatti 586 244 9ms 11 Sep 2021 155th dijs 584 245 9ms 8 Dec 2019 155th jquade7 584 245 10ms 27 May 2023 155th BenScattergood 584 245 11ms 17 Sep 2023 158th paul3412 581 246 11ms 1 Dec 2019 158th targrik 581 246 11ms 16 Apr 2025 158th cloudyshoe 581 246 10ms 15 May 2025 First Prev 81–160 of 489 Next Last
