The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 27 hours. Why not try and solve them ahead of time?
Fibonacci in Java 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 241st WilleyOhana 471 121 379ms 12 Oct 2020 241st cmlee1324 471 121 378ms 12 Feb 2022 241st crizin 🇰🇷 471 121 411ms 9 Sep 2023 244th Fragaile 467 122 364ms 9 Sep 2025 245th hymanimy 463 123 374ms 27 Jul 2021 245th lilyyy411 463 123 393ms 10 Sep 2021 245th Nick-NCSU 463 123 381ms 2 Nov 2021 245th GreenBeansAgainstVeganism 463 123 396ms 28 May 2022 245th conder13 463 123 394ms 28 Aug 2025 250th janga1 460 124 374ms 19 Aug 2021 250th JC-ProgJava 460 124 389ms 14 May 2022 252nd DylanSmith63 456 125 387ms 20 Oct 2022 252nd PotatoSaladOverlord 456 125 381ms 18 Jan 2024 252nd JesseNoEyes 🇺🇸 456 125 407ms 25 Sep 2024 255th sobhanbera 449 127 396ms 22 Jun 2020 255th iant89 449 127 383ms 21 Aug 2021 255th codefeld 449 127 394ms 25 Jun 2023 255th azure-blondon 449 127 367ms 5 May 2024 255th Bozrem 449 127 450ms 5 Jun 2025 260th AZ9tumas 442 129 397ms 15 Oct 2022 260th achilleasr 442 129 388ms 7 Nov 2022 262nd jtaxen 438 130 376ms 18 Mar 2022 263rd Superminaren 432 132 393ms 1 Jun 2020 263rd timpauls 432 132 406ms 29 Oct 2021 265th sulphemi 429 133 393ms 4 Mar 2022 266th isseikz 425 134 389ms 4 Jun 2020 266th LeftPathLane 425 134 402ms 1 Nov 2022 268th riviere-lucas 422 135 367ms 29 Dec 2020 268th louisbosqui 422 135 377ms 29 Dec 2020 268th selketdaly 422 135 403ms 9 Sep 2022 271st oschmidh 419 136 377ms 18 Nov 2020 271st dillon-duncando 419 136 412ms 21 Dec 2021 271st DaanDvl 419 136 395ms 29 Jun 2022 274th jetzerv 416 137 399ms 19 Dec 2020 274th caynraiser 416 137 386ms 8 Dec 2021 274th CarstenSchridde 416 137 382ms 28 Jun 2024 277th MEuph 413 138 380ms 23 Apr 2020 277th the-soph-ia 413 138 380ms 15 Jan 2021 277th bsoyka 🇺🇸 413 138 405ms 9 Jan 2022 277th Smetalo 413 138 406ms 25 Aug 2022 281st mlandis1919 410 139 391ms 25 Sep 2020 281st artysta 410 139 383ms 27 Oct 2020 281st DaCuteRaccoon 410 139 390ms 28 Apr 2022 281st LawrenceZ1A 🇨🇦 410 139 373ms 26 May 2022 285th adoxography 407 140 410ms 12 Jun 2020 285th JacobStanleyJones 407 140 400ms 21 Mar 2022 285th phpboyscout 407 140 394ms 27 Apr 2023 285th cingulataluke 407 140 421ms 2 Jun 2024 289th ze-h 🇺🇸 404 141 370ms 10 Jan 2022 290th DerbnanGrabg 401 142 402ms 30 May 2024 290th DrJoWe 401 142 408ms 10 Jun 2024 290th onsagere 401 142 412ms 4 Oct 2024 293rd tm70 399 143 374ms 23 Jan 2021 294th ped-renguin 396 144 373ms 29 Oct 2023 295th IchBinMichMarkus 393 145 370ms 11 Jul 2023 295th RonaldoMessi-ai 393 145 413ms 22 May 2025 297th jonah1068 390 146 402ms 15 Sep 2023 297th jccummi1 390 146 385ms 29 Oct 2023 297th noah-dean-wa 390 146 413ms 22 May 2025 300th Armka 383 149 391ms 10 Sep 2025 300th Zach1031 383 149 488ms 14 Nov 2025 302nd Oscujic 380 150 390ms 8 Jan 2021 302nd ValNyz 380 150 381ms 23 Feb 2022 302nd DonutDelle 380 150 398ms 18 Mar 2022 302nd sm1lko 380 150 384ms 14 Dec 2022 306th nico-bachner 377 151 397ms 28 Dec 2020 307th AvaAvarai 370 154 418ms 20 Sep 2021 308th tnecio 368 155 378ms 4 Jul 2021 308th amber1093 368 155 387ms 22 Feb 2024 310th ishuii 363 157 372ms 15 Nov 2023 310th Zstr25 363 157 402ms 9 Sep 2025 312th lexigeib 361 158 407ms 17 Jul 2020 312th BrysonHamlin 🇺🇸 361 158 383ms 18 Apr 2022 314th lukemalek 358 159 361ms 20 Oct 2022 315th Salamence064 354 161 392ms 13 Nov 2022 316th VladislavGitter 🇪🇸 352 162 382ms 13 Nov 2023 317th Bananapants22 345 165 547ms 21 Aug 2022 318th RockOfStone 341 167 397ms 23 Mar 2024 318th greg-657 341 167 365ms 13 Oct 2025 320th CuboidRaptor 🇨🇦 337 169 390ms 26 May 2022 First Prev 241–320 of 346 Next Last
