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 798th muser-logiccpu 🇺🇦 321 368 10ms 23 Jul 2025 802nd Omega65536 🇩🇪 320 369 10ms 5 Jan 2021 802nd KieranZimmer 320 369 10ms 12 Mar 2022 804th Eulentier161 319 370 10ms 1 Nov 2023 804th yuchuehw 319 370 10ms 30 Dec 2023 806th Retkoj 318 371 16ms 30 Nov 2020 806th lokesh1809 318 371 10ms 3 Dec 2021 808th shota-eguchi 317 372 10ms 23 Jun 2022 808th roguh 🇬🇹 317 372 10ms 9 Jan 2024 808th tpremoli 317 372 10ms 11 Jun 2024 811th djtuBIG-MaliceX 316 373 16ms 2 Feb 2018 812th sgaltair 316 374 10ms 22 Feb 2023 812th wenbang24 316 374 10ms 29 Mar 2024 812th OyuDays 316 374 10ms 17 Mar 2025 815th chris3145 315 375 10ms 30 Jun 2022 815th Wonamm 315 375 10ms 14 Feb 2025 815th Apfelvater 315 375 16ms 24 days ago 818th thomashastings 314 376 11ms 16 Apr 2021 818th ShadowOfTheFuture 314 376 9ms 3 Dec 2021 820th jaxmattfair 🇺🇸 313 377 10ms 22 May 2024 821st dpasionek 312 378 17ms 7 Oct 2020 821st milainlambers 312 378 10ms 30 May 2022 823rd MrLotU 310 381 17ms 7 Dec 2022 824th mishakmak 309 382 10ms 19 May 2018 824th chua-wei-cheng 309 382 11ms 28 Jul 2020 824th Yareeeema 309 382 10ms 10 Apr 2022 824th jelleromer 309 382 11ms 23 Apr 2024 828th RobertPoienar 308 383 11ms 18 Oct 2019 828th rohanku 308 383 11ms 7 Aug 2021 828th amadeusdotpng 308 383 10ms 22 Apr 2023 831st joshvd 307 384 10ms 1 Sep 2019 831st samburba 307 384 11ms 27 Jan 2025 833rd W1Z44RD 306 386 9ms 26 Sep 2022 833rd TheAtrossian 306 386 10ms 5 Jan 2025 835th nwunderly 305 387 10ms 23 Aug 2024 835th Unknownuserfrommars 305 387 9ms 7 Oct 2024 835th jusaka 305 387 10ms 7 days ago 838th theonlytruemathnerd 304 388 9ms 10 Jan 2020 838th shibacho 🇯🇵 304 388 17ms 18 Mar 2022 838th Pyro569 304 388 11ms 26 Feb 2024 841st Eskumu 303 389 11ms 19 Nov 2017 841st IAGOAG 303 389 10ms 24 Jun 2018 841st TheShai81 303 389 10ms 31 Aug 2024 841st llPlayll 303 389 10ms 5 Dec 2025 845th 0JCRG0 303 390 10ms 19 Jan 2024 845th june410 🇨🇦 303 390 12ms 6 Jun 2024 847th jackdonofrio 302 391 10ms 22 Apr 2020 847th jmorton89 302 391 11ms 10 Aug 2020 847th katmh 302 391 10ms 1 Feb 2021 847th Havelex 302 391 10ms 15 Dec 2023 847th HagenFritz 302 391 10ms 20 Jun 2025 852nd memuyskens 301 392 11ms 20 May 2021 852nd fulgurbloom 301 392 10ms 5 Jul 2025 854th thefakequake 300 393 11ms 27 May 2022 854th cseiter 300 393 10ms 17 Jun 2022 856th katharine67 299 394 10ms 8 Oct 2022 857th GodEmperorCaterpie 299 395 17ms 5 Sep 2019 857th besasam 299 395 10ms 31 Mar 2021 857th AlanSmithee419 299 395 10ms 18 Nov 2021 857th raflemakt 299 395 11ms 3 Jan 2024 861st WilliamBate 298 396 10ms 18 Aug 2020 861st Wodinthemighty 298 396 10ms 5 Mar 2021 863rd Xzoky174 297 397 9ms 7 Oct 2022 864th pecholsjones 296 398 10ms 8 Dec 2021 864th krcs 🇵🇱 296 398 11ms 25 Dec 2021 864th FK76exe 296 398 12ms 8 Oct 2022 867th hectordubuis 296 399 9ms 17 Dec 2022 868th AndrewYinLi 295 400 9ms 26 May 2020 868th delphonso 295 400 10ms 21 Dec 2021 868th aloobun 295 400 10ms 2 Dec 2024 871st loser1k 294 401 11ms 25 Jul 2024 872nd DragonaireM 293 403 10ms 4 Feb 2023 873rd HorseScary 292 404 9ms 16 Nov 2021 873rd YoungjuneKwon 292 404 10ms 28 Jun 2023 873rd robmillersoftware 292 404 10ms 5 Aug 2023 876th vzsky 291 406 9ms 9 Nov 2022 877th Loag 290 407 10ms 7 Sep 2024 878th Stockoh 🇫🇷 289 408 10ms 5 May 2023 878th Bit125 289 408 9ms 31 Jan 2024 880th AliceFord 289 409 10ms 2 Jun 2022 First Prev 801–880 of 1,102 Next Last
