The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 4 days. Why not try and solve them ahead of time?
Rock-paper-scissors-Spock-lizard 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 241st GrayJoKing 🇦🇺 840 228 107ms 8 Jun 2022 242nd solmyr2000 839 213 14ms 9 Jun 2022 243rd lynn 836 215 20ms 23 May 2021 243rd emgordon154 836 215 22ms 7 Jun 2025 245th scpchicken 🇵🇼 836 273 5ms 20 Apr 2023 246th antimon2 🇯🇵 835 196 904ms 3 Oct 2022 246th janbehrens 🇩🇪 835 196 312ms 28 Jun 2023 248th shraiwi 835 214 15ms 29 Aug 2019 249th anter69 🇭🇺 832 175 36ms 26 Jan 2022 250th Pimentero 🇷🇺 831 215 13ms 30 Mar 2021 250th JuhoHeiskanen 831 215 12ms 15 Oct 2022 252nd stefangimmillaro 830 177 1,632ms 23 Aug 2022 253rd error256 829 231 101ms 11 Apr 2025 254th orthoplex 🇨🇽 828 217 21ms 9 Aug 2021 254th lifthrasiir 🇰🇷 828 217 10ms 13 Nov 2024 256th saito-ta 🇯🇵 827 171 43ms 26 Aug 2022 257th lukasmoellerch 827 216 11ms 16 Mar 2021 258th commandz0 🇺🇸 826 276 4ms 19 Apr 2023 259th GolfingSuccess 🇬🇷 824 218 25ms 24 May 2021 260th Waffle3z 823 177 37ms 23 Jan 2021 261st anter69 🇭🇺 820 179 1,620ms 15 Feb 2023 262nd MeWhenI 🇻🇦 819 926 37ms 27 Mar 2024 263rd blaztoma 🇱🇹 818 178 39ms 16 Jan 2026 264th SirBogman 🇺🇸 817 220 23ms 29 Nov 2022 265th adriweb 🇫🇷 817 269 2ms 23 Aug 2023 266th JDiLenarda 🇫🇷 817 340 1,500ms 30 Oct 2020 267th Protothor 816 219 11ms 12 days ago 268th sean-niemann 🇺🇸 815 254 1,005ms 27 Dec 2024 269th revlayle 🇺🇸 815 275 490ms 26 Nov 2022 270th snoozingnewt 🇨🇦 814 205 521ms 17 Feb 2026 271st neihousaigaai 813 221 21ms 20 Apr 2021 271st keelimeguy 🇺🇸 813 221 20ms 18 Oct 2023 271st CutSandstone 813 221 21ms 19 Jul 2024 274th lynn 813 374 28ms 6 Aug 2023 275th janbehrens 🇩🇪 813 445 27ms 10 Jul 2021 276th dokutan 811 816 12ms 26 days ago 277th prplz 🇦🇺 809 222 19ms 5 Feb 2021 277th annaproxy 809 222 11ms 30 Apr 2022 277th inventshah 809 222 19ms 15 May 2022 277th tobeannouncd 809 222 18ms 11 Jan 2024 281st coreynash 808 221 11ms 9 Sep 2023 282nd MichalMarsalek 🇨🇿 808 262 574ms 21 Jan 2023 283rd lifthrasiir 🇰🇷 806 207 565ms 2 Dec 2024 284th geofft 806 223 22ms 10 Dec 2020 285th Andriamanitra 🇫🇮 805 181 33ms 26 Apr 2023 286th MeWhenI 🇻🇦 805 222 11ms 1 Jul 2023 287th NewDefectus 🇮🇱 804 239 54ms 5 Dec 2021 288th stefangimmillaro 804 264 779ms 6 Oct 2025 289th vishwathg 802 224 11ms 3 Apr 2023 289th CornerMercury 🇬🇧 802 224 22ms 23 Nov 2025 291st prplz 🇦🇺 802 269 2ms 15 Feb 2021 292nd dokutan 802 644 76ms 7 days ago 293rd JRaspass 🇬🇧 800 191 4ms 21 May 2021 294th TFeld00 🇩🇰 799 225 19ms 13 Oct 2020 294th Just4FunCoder 799 225 19ms 24 Sep 2025 296th arjanadriaanse 🇳🇱 799 276 143ms 23 Feb 2022 297th UnderKoen 🇳🇱 799 318 3ms 20 Jan 2025 298th prplz 🇦🇺 797 290 71ms 2 Jan 2022 299th dokutan 796 276 2ms 23 Sep 2025 300th ZakkkkAttackkkk 🇵🇭 795 226 11ms 31 Jul 2022 300th bzijlema 🇳🇱 795 226 11ms 24 Jul 2025 300th InigoK 🇺🇸 795 226 10ms 22 Sep 2025 303rd SirBogman 🇺🇸 795 258 120ms 6 Oct 2025 304th dylanpyle 794 225 12ms 26 Jun 2020 305th Haksell 🇦🇶 792 184 35ms 22 Feb 2023 306th Irratix 🇳🇱 792 227 22ms 19 Apr 2022 306th OllieBoyne 🇬🇧 792 227 20ms 26 Aug 2022 306th ahmetdemirag 🇨🇾 792 227 13ms 19 Mar 2025 309th MeWhenI 🇻🇦 790 186 1,569ms 7 Jun 2024 310th KatieLG 🇬🇧 790 837 8ms 21 Feb 2026 311th kg583 🇺🇸 788 228 10ms 15 Nov 2023 312th olleicua 🇺🇸 787 185 35ms 6 Dec 2024 313th omurakazuaki 🇯🇵 787 227 12ms 18 Feb 2021 314th EddieTheCubeHead 785 229 20ms 15 Oct 2022 314th duckyluuk 🇳🇱 785 229 10ms 8 Feb 2024 314th commandz0 🇺🇸 785 229 20ms 24 Mar 2024 314th Artemis21 🇬🇧 785 229 18ms 21 Dec 2024 318th eldritchconundrum 784 286 423ms 21 Nov 2021 319th marshallward 🇺🇸 784 383 41ms 26 Jun 2023 320th emgordon154 783 213 613ms 7 Jun 2025 First Prev 241–320 of 1,137 Next Last