The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 2 days. Why not try and solve them ahead of time?
Abundant Numbers in Java 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 81st ldoodle 559 136 376ms 12 Feb 2021 81st Leftykap 559 136 390ms 28 Oct 2022 81st FrederikHutfless 🇩🇪 559 136 407ms 22 Dec 2022 81st OriEy 559 136 360ms 27 Apr 2023 85th adoxography 555 137 394ms 20 Jan 2022 85th mantrades 555 137 415ms 3 Dec 2024 87th mattwho76 551 138 387ms 24 Apr 2020 87th hyvyys 551 138 413ms 12 Sep 2020 87th Bolix7 551 138 387ms 23 May 2021 87th Pyro569 551 138 394ms 20 Jul 2023 87th msbranicky 551 138 367ms 9 Jan 2024 92nd melikebuyruk 547 139 397ms 21 Mar 2021 92nd althryenix 547 139 393ms 18 Jan 2023 92nd crizin 🇰🇷 547 139 402ms 9 Sep 2023 92nd noescareno 547 139 417ms 31 May 2025 96th jetzerv 543 140 403ms 17 Dec 2020 96th FANNILS 543 140 375ms 21 May 2022 96th lovernj 543 140 388ms 23 Aug 2022 99th hbiede 539 141 416ms 21 Apr 2020 99th jackdonofrio 539 141 393ms 22 Apr 2020 99th lexigeib 539 141 382ms 17 Jul 2020 99th Bruweiz 539 141 379ms 28 Oct 2020 103rd GWStuart 535 142 410ms 1 Jul 2024 104th MrGagnonHPS 531 143 402ms 15 Oct 2023 104th orifu 531 143 415ms 14 Oct 2024 106th WillowBee7 528 144 378ms 28 Sep 2020 106th BruceMcRooster 528 144 393ms 16 May 2022 108th rachitkeyal 524 145 392ms 10 Nov 2022 108th Techdude01 524 145 384ms 26 Nov 2022 108th BrunoFaliszewski 🇵🇱 524 145 403ms 30 Nov 2023 108th te-chnical 524 145 391ms 4 May 2025 112th jasoncross1357 521 146 401ms 15 Mar 2022 113th Waterperry 517 147 398ms 30 May 2022 113th mathislife22 517 147 417ms 31 Aug 2023 115th DarkC4t 514 148 392ms 19 Apr 2022 116th Captschi 510 149 373ms 16 Feb 2021 116th 104210 510 149 469ms 8 Jun 2022 116th luca1339 510 149 405ms 7 Jun 2024 119th iPablol 507 150 405ms 25 Oct 2023 119th VladislavGitter 🇪🇸 507 150 381ms 13 Nov 2023 119th crazymoose7 507 150 367ms 16 Feb 2024 122nd PotatoSaladOverlord 503 151 383ms 7 Jun 2023 122nd aDwarfNamedUrist 503 151 401ms 30 Aug 2023 124th StronkCheese 🇺🇸 497 153 392ms 1 Feb 2023 125th FK76exe 494 154 368ms 8 Oct 2022 126th HalvorOverby 490 155 394ms 22 Dec 2021 126th xoxo-ily 490 155 383ms 12 Dec 2023 128th eiburns 481 158 401ms 13 Nov 2020 128th Vaekor 481 158 397ms 9 Jul 2023 128th Grrine 481 158 417ms 4 Feb 2025 131st vSweePerxX 475 160 388ms 8 Jun 2022 132nd 21colburn 472 161 480ms 1 Feb 2021 133rd Geird 455 167 372ms 3 Dec 2022 133rd carlosbviteri 455 167 403ms 23 Apr 2024 135th jonah1068 450 169 378ms 15 Sep 2023 136th AkhileshSangaraju 447 170 412ms 28 Jan 2025 137th goolygong 413 184 419ms 20 Nov 2020 138th HumanoidCPU 394 193 454ms 8 Nov 2025 139th sonisonjames 378 201 396ms 12 Nov 2022 140th bidger 373 204 394ms 18 Oct 2022 141st kevinnaviapaiva 365 208 396ms 6 Mar 2025 142nd KatieLG 🇬🇧 362 210 492ms 24 Sep 2025 143rd Melkijad 353 215 368ms 26 Oct 2020 144th KatieLG-Transpiler 🇬🇧 326 233 396ms 23 Jun 2022 145th theEsteemed 285 267 380ms 27 Aug 2025 146th mokymok 🇺🇸 281 270 391ms 10 Nov 2021 147th retrohun 271 280 382ms 27 Dec 2022 147th Mabeloid 🇳🇴 271 280 392ms 18 Sep 2024 149th Firefox760 235 324 368ms 23 Apr 2023 150th Koubidoo 174 436 445ms 21 Mar 2023 151st ivs95 148 515 412ms 2 Oct 2020 First Prev 81–151 of 151
