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 Python 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 720th techieji 339 348 16ms 2 Nov 2021 720th Carlettos1 339 348 10ms 13 Sep 2024 720th poojan124 339 348 10ms 5 Apr 2025 720th 5auru5 339 348 10ms 7 Nov 2025 725th confy 338 349 10ms 25 Oct 2020 725th gcrk 338 349 11ms 2 Mar 2022 725th Code-Coder-coder 338 349 9ms 14 Oct 2025 728th ethandhunt 337 350 10ms 14 Aug 2021 728th joshuamkite 337 350 11ms 25 Aug 2023 728th bh2smith 337 350 10ms 8 May 2024 731st Nordle 336 351 16ms 26 Feb 2020 731st reedwilemon 336 351 10ms 10 Jun 2021 731st twocatsinatrenchcoat 336 351 9ms 14 Apr 2022 731st Donkere-vader 336 351 17ms 28 Nov 2022 731st charliegaming 336 351 11ms 4 Oct 2023 731st jtaxen 336 351 16ms 1 Apr 2024 731st syspro86 336 351 11ms 27 Feb 2025 738th martinbaros 335 352 10ms 19 May 2020 738th miranyx 335 352 10ms 12 Nov 2023 738th Einsitein 335 352 11ms 21 Apr 2024 738th lilymeoww 335 352 10ms 10 Dec 2025 742nd RussellDash332 334 353 17ms 20 Nov 2021 742nd emirps 334 353 10ms 21 Feb 2023 742nd epic-programmer-guy 334 353 11ms 31 Dec 2023 742nd raktim10 334 353 11ms 8 Nov 2024 746th pizie11 333 354 11ms 26 Dec 2022 746th DGipe 333 354 10ms 4 Mar 2024 746th duduaugusto123 333 354 10ms 15 Aug 2024 749th nathanaelbosilia 332 355 17ms 21 Mar 2018 749th NatriumKlorit 332 355 17ms 21 Mar 2018 749th lukehatcher 🇺🇸 332 355 10ms 30 Aug 2021 749th esnethen 332 355 9ms 21 Feb 2023 749th DukeOfSlovakia 332 355 18ms 27 Feb 2024 749th cthierfelder 🇲🇨 332 355 11ms 6 Sep 2025 755th Claxon 331 356 10ms 17 Dec 2021 756th Sturalke 331 357 10ms 10 Sep 2021 756th Great-Gamer 331 357 11ms 25 Feb 2022 756th zlohner 331 357 10ms 6 Apr 2022 756th InitialPosition 331 357 11ms 31 Aug 2022 756th HelloYuiYui 331 357 9ms 1 Nov 2023 756th diquah 331 357 10ms 1 Nov 2023 756th ItsEthanDev 331 357 10ms 13 Dec 2023 756th MttWed 331 357 10ms 26 Nov 2024 764th Hazedd 330 358 10ms 10 May 2021 764th FJSFerreira 330 358 10ms 22 May 2021 764th rak1507 🇬🇧 330 358 10ms 28 Oct 2021 764th Ankl1 🇺🇸 330 358 10ms 10 Apr 2025 768th timchu 329 359 10ms 4 Mar 2021 768th Alfiecxn 🇬🇧 329 359 10ms 13 Oct 2024 768th logalex8369 🇺🇸 329 359 16ms 19 Dec 2025 771st ToE42 328 360 10ms 7 Sep 2021 771st vhoudev 328 360 16ms 15 Nov 2021 771st n0es 328 360 10ms 28 Sep 2022 771st trist224 🇫🇷 328 360 10ms 28 Nov 2022 771st BlakeBleem 328 360 17ms 20 Apr 2023 771st Tkidder132 328 360 10ms 28 Aug 2023 777th derekthatcher 327 361 18ms 22 Sep 2020 777th HairyOtter07 327 361 17ms 17 Jun 2021 777th SURAJMITTAL 327 361 9ms 19 Dec 2024 777th ukeSJTU 327 361 10ms 20 Oct 2025 781st Rosco5555 326 362 10ms 22 Jul 2022 781st PeterDekkers 326 362 10ms 7 Aug 2022 781st specbug 326 362 11ms 30 Nov 2022 784th josephjojoe 325 363 11ms 22 Feb 2021 784th adammehaney 325 363 11ms 25 Sep 2024 786th cadecrandall 324 364 11ms 4 Jun 2020 786th pquline 324 364 10ms 4 Mar 2025 788th Psirving 323 365 10ms 20 Jul 2020 788th MLPdiscord 323 365 10ms 7 Jan 2022 788th BrysonHamlin 🇺🇸 323 365 10ms 8 Apr 2022 788th jnluke 323 365 11ms 27 Mar 2024 792nd boxjelly 322 366 17ms 24 Feb 2021 792nd TheSmilingTurtle 322 366 10ms 19 May 2022 792nd andrewgopher 322 366 10ms 5 Dec 2022 792nd ImpressedByRocks 322 366 36ms 2 May 2025 796th jake-gnosis 322 367 10ms 4 Jun 2024 796th Florian-Mt 322 367 9ms 4 Dec 2025 798th Querinus 321 368 10ms 10 Nov 2022 798th jknndy 321 368 10ms 22 Oct 2023 798th CyberTapir 321 368 10ms 6 Sep 2024 First Prev 721–800 of 1,102 Next Last
