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 all languages 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 881st dokutan 612 207 79ms 26 Jan 2026 882nd tigerdan2 🇩🇪 612 230 11ms 30 Nov 2025 883rd jared-hughes 612 281 45ms 22 Apr 2022 884th HandsomeSB 612 387 443ms 29 Oct 2022 885th arcage 🇯🇵 611 311 1,265ms 3 Apr 2021 886th arctouch-andresato 610 285 364ms 11 Nov 2022 887th Siri-chan 610 371 134ms 18 Feb 2023 887th snoozingnewt 🇨🇦 610 371 139ms 6 Nov 2025 889th vlad-ushakov 609 231 10ms 22 Mar 2023 890th GrayJoKing 🇦🇺 609 242 9ms 5 Nov 2020 891st CatsAreFluffy 609 264 1ms 29 Nov 2022 892nd TeodorDyakov 🇧🇬 609 389 655ms 9 Jan 2026 893rd Natanaelel 🇸🇪 608 372 140ms 1 Feb 2024 894th FCORMERAIS 607 193 11ms 4 Mar 2024 895th ovs-code 🇩🇪 607 222 73ms 19 Jan 2025 896th stadamdoki 607 434 283ms 9 Mar 2021 897th alexkunin 606 232 11ms 4 Jul 2019 897th vroup 🇩🇰 606 232 10ms 23 Sep 2022 897th TheDarkThatBarks 606 232 9ms 30 Jan 2024 900th ian-h-chamberlain 🇺🇸 606 251 40ms 2 Nov 2025 901st MeWhenI 🇻🇦 606 373 134ms 8 Nov 2023 902nd Ripick 605 296 126ms 15 Jul 2024 903rd sgtdck 604 233 13ms 6 Oct 2018 903rd PumpedSardines 604 233 10ms 18 Sep 2024 905th edsrzf 🇳🇿 604 248 5ms 13 Nov 2025 906th Kloppermand 🇩🇰 604 288 380ms 21 Nov 2021 907th anywherecreative 604 315 5ms 10 Jun 2022 908th cjxthecoder 604 392 401ms 1 Apr 2023 909th msbranicky 603 354 107ms 6 Sep 2023 910th MeWhenI 🇻🇦 602 251 151ms 1 May 2023 911th MeWhenI 🇻🇦 602 360 8ms 28 Nov 2023 912th Bruweiz 602 393 431ms 28 Oct 2020 913th JOrE20 602 436 26ms 4 Jan 2026 914th tomh1012 601 234 9ms 1 Oct 2020 914th RedstoneTim 601 234 10ms 29 Jun 2021 914th veiko 601 234 10ms 18 Jun 2022 917th Rastaban 601 323 1,523ms 4 Aug 2022 918th DialFrost 🇸🇬 601 355 114ms 8 Jan 2023 919th kordrun 601 394 414ms 30 Mar 2023 920th fish-on-dude 601 440 42ms 7 Jun 2020 921st Jacob385 600 195 10ms 4 Apr 2024 921st Deedogg 600 195 17ms 30 Oct 2025 923rd bac0id 600 290 418ms 5 Jul 2024 924th markbyrne 600 317 5ms 20 Nov 2021 925th IanUtley 600 425 2ms 3 Jul 2024 926th edsrzf 🇳🇿 599 212 790ms 12 days ago 927th dee-gomma 599 235 10ms 30 Mar 2019 927th GeorgeStechman 🇬🇧 599 235 10ms 19 Jun 2022 927th two-bad 🇬🇧 599 235 11ms 23 Jun 2022 927th jbt 599 235 9ms 26 Dec 2023 931st sean-niemann 🇺🇸 599 299 371ms 7 Feb 2025 932nd MeWhenI 🇻🇦 599 319 7ms 12 Aug 2024 933rd CRefice 599 324 1,385ms 3 Jan 2022 933rd CatsAreFluffy 599 324 63ms 3 Feb 2023 935th yamhab 🇨🇦 599 408 152ms 13 Sep 2023 936th Meowsan91 🇨🇿 598 291 396ms 21 Nov 2021 937th ovs-code 🇩🇪 598 325 2,940ms 19 Jun 2024 938th yishayv 598 439 25ms 22 Jan 2023 939th Mabeloid 🇳🇴 597 196 14ms 17 Sep 2024 940th Yewzir 🇧🇪 597 287 3ms 5 Jul 2023 941st Onitech 597 319 5ms 16 Nov 2018 941st pavarnos 597 319 4ms 9 Nov 2022 941st KasperKivimaeki 🇫🇮 597 319 4ms 10 Dec 2025 944th snoozingnewt 🇨🇦 596 226 87ms 19 Oct 2025 945th Gaspar-Cdv 596 236 12ms 11 Jun 2021 946th dokutan 596 240 70ms 6 Nov 2024 947th keelimeguy 🇺🇸 596 326 438ms 3 May 2025 948th yishayv 596 442 299ms 22 Jan 2023 949th Dingus357 🇦🇺 595 197 39ms 14 Oct 2023 950th snoozingnewt 🇨🇦 595 268 123ms 17 Dec 2025 951st logvp 595 292 410ms 12 Jan 2024 952nd lewisself64 595 320 5ms 4 Dec 2019 952nd Tonic-Box 595 320 4ms 6 Nov 2020 954th agreegious 594 197 16ms 17 Mar 2025 955th sisyphus-ppcg 🇦🇺 594 252 3ms 4 Feb 2023 956th boxjelly 594 381 131ms 5 Jan 2021 957th vmoraru 594 399 2,676ms 17 Jan 2025 958th nwellnhof 🇩🇪 593 192 311ms 27 Jul 2025 959th wouterraateland 593 237 10ms 8 Jul 2019 959th rope-hmg 593 237 8ms 19 Apr 2022 First Prev 881–960 of 3,916 Next Last
