The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 4 days. Why not try and solve them ahead of time?
99 Bottles of Beer 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 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 240th sean-niemann 🇺🇸 919 230 2ms 30 May 2024 240th Steffan153 🇫🇮 919 230 2ms 26 Jul 2024 243rd igmcdowell 918 216 11ms 22 Nov 2021 243rd uttumuttu 🇫🇮 918 216 10ms 7 Mar 2022 243rd Ephellon 918 216 10ms 16 Dec 2023 243rd neel11235813 918 216 10ms 14 Mar 2024 247th sisyphus-ppcg 🇦🇺 918 252 3ms 4 Feb 2023 248th lynn 918 284 26ms 11 Jul 2023 249th MeWhenI 🇻🇦 917 219 511ms 24 May 2024 250th GrayJoKing 🇦🇺 917 255 88ms 20 May 2022 250th Shanethegamer 🇺🇸 917 255 89ms 16 Feb 2025 252nd sean-niemann 🇺🇸 917 258 106ms 30 Oct 2023 253rd JRaspass 🇬🇧 916 199 120ms 16 Dec 2020 254th Bubbler-4 916 212 35ms 30 Jun 2021 255th retrohun 915 197 3ms 26 Dec 2022 256th nwellnhof 🇩🇪 915 212 34ms 14 Oct 2024 256th Steffan153 🇫🇮 915 212 38ms 20 days ago 258th ovs-code 🇩🇪 915 341 1,622ms 2 Feb 2025 258th emgordon154 915 341 1,499ms 4 Nov 2025 260th 52525rr 914 217 12ms 7 Jul 2025 260th alexsave 914 217 9ms 13 Oct 2025 262nd NewDefectus 🇮🇱 914 224 18ms 28 May 2021 263rd lynn 914 274 147ms 5 Apr 2022 264th snoozingnewt 🇨🇦 914 302 102ms 6 Dec 2025 265th GrayJoKing 🇦🇺 913 220 467ms 16 Jan 2024 266th Attero 🇸🇪 912 232 2ms 30 Oct 2020 267th pardouin 🇫🇷 911 213 33ms 26 Aug 2025 267th anter69 🇭🇺 911 213 39ms 5 Dec 2025 267th sean-niemann 🇺🇸 911 213 34ms 30 Dec 2025 270th GolfingSuccess 🇬🇷 911 250 8ms 29 Mar 2023 271st roberttod 910 218 10ms 11 May 2018 271st neihousaigaai 910 218 9ms 27 Apr 2021 271st KingSkyrock 🇺🇸 910 218 11ms 9 Feb 2022 274th b-illy 🇬🇧 910 225 17ms 6 Sep 2024 274th Flekay 🇩🇪 910 225 10ms 26 Feb 2026 274th snoozingnewt 🇨🇦 910 225 10ms 27 days ago 274th dokutan 910 225 10ms 14 days ago 274th aksyristos 910 225 10ms 8 hours ago 279th adgh 🇬🇧 910 235 84ms 16 Feb 2026 280th MeWhenI 🇻🇦 910 286 3ms 25 Jul 2023 281st primo-ppcg 🇹🇭 910 388 1,805ms 15 Sep 2025 282nd snoozingnewt 🇨🇦 909 221 443ms 27 days ago 282nd dokutan 909 221 469ms 14 days ago 284th AlephSquirrel 909 226 11ms 13 Oct 2024 285th emplv 🇱🇻 909 245 133ms 20 Dec 2022 286th prplz 🇦🇺 908 233 2ms 26 Mar 2019 287th GrayJoKing 🇦🇺 908 255 3ms 15 Mar 2023 288th MeWhenI 🇻🇦 908 470 17ms 8 Dec 2022 289th emgordon154 907 178 38ms 10 Sep 2025 290th DialFrost 🇸🇬 907 221 3ms 19 Dec 2025 291st JayXon 🇺🇸 907 244 460ms 27 Sep 2023 292nd MeWhenI 🇻🇦 907 266 448ms 26 May 2023 293rd ovs-code 🇩🇪 906 201 109ms 6 Jan 2024 294th tomtheisen 🇺🇸 906 219 9ms 14 Oct 2020 294th hpr 906 219 10ms 13 Jun 2021 294th dylanarmstrong 906 219 10ms 26 Jan 2024 294th MeWhenI 🇻🇦 906 219 9ms 2 Aug 2024 298th jmhowl 906 226 10ms 31 Dec 2019 298th orthoplex 🇨🇽 906 226 16ms 13 Jan 2022 298th neihousaigaai 906 226 9ms 29 Apr 2022 298th commandz0 🇺🇸 906 226 18ms 20 May 2023 302nd ETHproductions 🇺🇸 906 231 218ms 21 Dec 2018 302nd MarcMush 🇫🇷 906 231 219ms 18 Nov 2021 304th WilliamDeBlieck 906 236 70ms 25 days ago 305th emgordon154 906 284 8ms 23 days ago 306th GolfingSuccess 🇬🇷 905 222 497ms 15 Jan 2024 306th commandz0 🇺🇸 905 222 484ms 16 Jan 2024 308th MeWhenI 🇻🇦 905 246 108ms 15 Oct 2022 309th primo-ppcg 🇹🇭 905 437 16ms 25 Jun 2025 310th DialFrost 🇸🇬 904 210 313ms 18 Jan 2025 311th BlankSpruce 904 234 2ms 16 Aug 2024 312th primo-ppcg 🇹🇭 904 245 454ms 27 Sep 2023 313th ovs-code 🇩🇪 904 252 7ms 19 Apr 2023 314th sean-niemann 🇺🇸 904 274 2,600ms 30 Dec 2025 315th primo-ppcg 🇹🇭 903 221 1,292ms 12 Jul 2021 316th rboath 903 237 88ms 9 Jan 2025 317th GrayJoKing 🇦🇺 902 215 36ms 1 Jun 2022 318th jared-hughes 902 227 10ms 5 Apr 2022 318th betaveros 902 227 22ms 9 Aug 2022 318th jbjd 902 227 16ms 17 Sep 2024 First Prev 241–320 of 3,938 Next Last