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?
Prime Numbers in Rust 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 78th xnacly 🇩🇪 744 82 121ms 5 Jul 2023 78th StronkCheese 🇺🇸 744 82 128ms 7 Sep 2023 83rd akusumoto 🇯🇵 735 83 116ms 19 Apr 2022 83rd CarsonChr 🇺🇸 735 83 128ms 7 Apr 2024 85th hyvyys 709 86 137ms 22 Sep 2020 85th inverseLorentz 🇦🇺 709 86 128ms 12 May 2024 87th Mabeloid 🇳🇴 701 87 122ms 31 Oct 2025 88th StHagel 693 88 123ms 23 Nov 2021 89th HumanoidCPU 685 89 125ms 1 Apr 2024 90th cbondurant 670 91 131ms 7 May 2021 90th 0x00A 670 91 120ms 14 Oct 2022 90th retrohun 670 91 111ms 28 Dec 2022 90th Betuaredead 670 91 122ms 4 Jan 2023 90th CaedenHarper 🇨🇦 670 91 107ms 15 Aug 2025 95th Pena86 663 92 146ms 27 May 2021 95th dzshn 663 92 134ms 8 Jun 2021 95th june410 🇨🇦 663 92 128ms 16 Jun 2024 98th tomh1012 656 93 129ms 13 Oct 2020 98th JesseNoEyes 🇺🇸 656 93 127ms 14 May 2025 100th Codsilla 🇨🇦 629 97 127ms 2 Jul 2022 100th mdnestor 629 97 128ms 16 Jan 2023 100th funnsam 🇭🇰 629 97 138ms 23 Oct 2023 103rd ytaki0801 🇯🇵 622 98 124ms 21 Jun 2021 104th sona-tau 616 99 132ms 10 Mar 2023 105th dyedquartz 610 100 137ms 14 Oct 2022 106th goodingc 604 101 128ms 3 Oct 2021 107th janleigh 🇵🇭 575 106 127ms 20 May 2022 108th RobertHoeh 570 107 143ms 6 May 2022 108th cyrilboyer 🇫🇷 570 107 130ms 27 Dec 2023 110th Pale-Vessel 565 108 126ms 23 Sep 2025 111th LeftPathLane 540 113 124ms 1 Nov 2022 112th bob8677 535 114 125ms 10 May 2021 112th KatieLG 🇬🇧 535 114 168ms 30 Nov 2025 114th mattrwalters 521 117 121ms 15 Jan 2020 114th mokymok 🇺🇸 521 117 115ms 9 Nov 2021 116th KatieLG-Transpiler 🇬🇧 517 118 113ms 24 Jun 2022 116th zt14427 517 118 112ms 30 Aug 2023 118th willpiam 513 119 122ms 19 Oct 2023 119th festiveelephantseal 🇺🇸 504 121 125ms 10 Jun 2021 120th nwatx 480 127 118ms 1 Dec 2021 121st ze-h 🇺🇸 473 129 129ms 28 Feb 2023 122nd bwenstar 466 131 133ms 9 Jul 2025 123rd Lampomaniac 🇳🇴 449 136 126ms 27 Dec 2021 124th kurkale6ka 427 143 170ms 16 Aug 2024 125th WatMan77 409 149 123ms 26 May 2025 126th antonymerle 247 247 134ms 16 May 2020 First Prev 81–126 of 126
