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?
ROT13 in all languages 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 1st Sakisan 🇧🇪 1,000 17 15ms 6 May 2025 1st HPWiz 🇳🇿 1,000 17 15ms 6 May 2025 1st DialFrost 🇸🇬 1,000 17 15ms 2 Aug 2025 1st Mukundan314 1,000 17 15ms 26 Dec 2025 1st GolfingSuccess 🇬🇷 1,000 17 14ms 31 Jan 2026 6th GolfingSuccess 🇬🇷 964 22 57ms 20 Mar 2025 6th Steffan153 🇫🇮 964 22 55ms 2 hours ago 8th ovs-code 🇩🇪 962 22 2ms 7 Jan 2025 8th 2bular 962 22 2ms 5 Sep 2025 8th zacjl 962 22 2ms 6 Sep 2025 11th commandz0 🇺🇸 958 68 11ms 5 Jan 2025 11th ovs-code 🇩🇪 958 68 11ms 5 Jan 2025 11th JayXon 🇺🇸 958 68 10ms 5 Jan 2025 11th Bulmenisaurus 958 68 11ms 5 Jan 2025 11th zacjl 958 68 12ms 5 Jan 2025 11th HPWiz 🇳🇿 958 68 12ms 5 Jan 2025 11th btnlq 958 68 10ms 5 Jan 2025 11th pardouin 🇫🇷 958 68 31ms 5 Jan 2025 11th khvdm 958 68 10ms 5 Jan 2025 11th AlephSquirrel 958 68 10ms 5 Jan 2025 11th fourth-bit 958 68 10ms 6 Jan 2025 11th Seek64 🇩🇪 958 68 11ms 6 Jan 2025 11th lynn 958 68 10ms 6 Jan 2025 11th m-tkach 🇺🇦 958 68 11ms 7 Jan 2025 11th xnor-gate 958 68 12ms 8 Jan 2025 11th Powerroff 958 68 11ms 9 Jan 2025 11th ndren 958 68 10ms 10 Jan 2025 11th esmaycat 958 68 12ms 13 Jan 2025 11th thatbirdguythatuknownot 958 68 30ms 14 Jan 2025 11th lambda-abstraction 958 68 10ms 15 Jan 2025 11th firegene 🇮🇪 958 68 10ms 15 Jan 2025 11th FieryIceStickie 958 68 11ms 17 Jan 2025 11th CornerMercury 🇬🇧 958 68 11ms 18 Jan 2025 11th CLOStrophobic 🇮🇹 958 68 10ms 20 Jan 2025 11th bzijlema 🇳🇱 958 68 11ms 22 Jan 2025 11th GolfingSuccess 🇬🇷 958 68 11ms 22 Jan 2025 11th Lydxn 🇨🇦 958 68 10ms 23 Jan 2025 11th prplz 🇦🇺 958 68 11ms 4 Feb 2025 11th hallvabo 🇳🇴 958 68 11ms 10 Apr 2025 11th error256 958 68 11ms 17 Apr 2025 11th fuzzylojik-golf 🇺🇸 958 68 10ms 7 Jul 2025 11th Mukundan314 958 68 11ms 9 Jul 2025 11th 4atj 958 68 10ms 9 Jul 2025 11th xsot 🇸🇬 958 68 10ms 9 Jul 2025 11th duckyluuk 🇳🇱 958 68 32ms 9 Jul 2025 11th lukegustafson 🇺🇸 958 68 10ms 9 Jul 2025 11th kg583 🇺🇸 958 68 10ms 9 Jul 2025 11th GrayJoKing 🇦🇺 958 68 10ms 9 Jul 2025 11th Alex-x90 🇺🇸 958 68 11ms 11 Jul 2025 11th b-illy 🇬🇧 958 68 32ms 13 Jul 2025 11th Natanaelel 🇸🇪 958 68 32ms 17 Jul 2025 11th cefqrn 958 68 11ms 17 Jul 2025 11th Andriamanitra 🇫🇮 958 68 11ms 17 Jul 2025 11th emgordon154 958 68 10ms 18 Jul 2025 11th Kacarott 🇦🇺 958 68 11ms 18 Jul 2025 11th cros107 🇦🇺 958 68 10ms 9 Sep 2025 11th Babafaba 958 68 31ms 30 Oct 2025 11th blaztoma 🇱🇹 958 68 11ms 30 Oct 2025 11th CaedenHarper 🇨🇦 958 68 11ms 30 Oct 2025 11th luuumine 🇫🇷 958 68 11ms 30 Oct 2025 11th edsrzf 🇳🇿 958 68 10ms 30 Oct 2025 11th FortuiteMan 🇫🇷 958 68 11ms 31 Oct 2025 11th KasperKivimaeki 🇫🇮 958 68 10ms 31 Oct 2025 11th Emutis 🇱🇹 958 68 29ms 2 Nov 2025 11th sisyphus-ppcg 🇦🇺 958 68 10ms 24 Nov 2025 11th sunleonid 958 68 32ms 26 Nov 2025 11th plcc0 958 68 11ms 12 Jan 2026 11th Steffan153 🇫🇮 958 68 11ms 11 Feb 2026 11th sean-niemann 🇺🇸 958 68 11ms 15 Feb 2026 11th Flekay 🇩🇪 958 68 10ms 18 Feb 2026 11th snoozingnewt 🇨🇦 958 68 10ms 20 Feb 2026 11th dokutan 958 68 11ms 27 days ago 11th StefanHabel 🇨🇦 958 68 11ms 11 days ago 74th ovs-code 🇩🇪 946 35 36ms 3 Jan 2025 74th sisyphus-ppcg 🇦🇺 946 35 38ms 6 Jan 2025 74th pardouin 🇫🇷 946 35 37ms 7 Jan 2025 74th janlelis 946 35 36ms 9 Jan 2025 74th tatzyr 🇯🇵 946 35 35ms 14 Jan 2025 74th primo-ppcg 🇹🇭 946 35 38ms 21 Jan 2025 74th Steffan153 🇫🇮 946 35 35ms 14 Feb 2026 1–80 of 1,073 Next Last
