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?
Intersection 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 801st jared-hughes 686 223 2,929ms 23 Oct 2022 801st 386asm 🇺🇸 686 223 43ms 27 Apr 2023 801st MateuszPietrzak 🇵🇱 686 223 454ms 9 Jan 2024 804th bbonenfant 686 245 240ms 21 Nov 2020 805th SirBogman 🇺🇸 685 119 300ms 2 Feb 2024 806th BBoehm 🇩🇪 684 132 11ms 19 Jan 2021 806th Pixels4Breakfast 684 132 10ms 2 Feb 2022 806th Lv0Sys 🇵🇱 684 132 11ms 4 Dec 2025 809th cbrt-x 684 178 145ms 19 Sep 2023 810th vishwathg 683 153 24ms 27 Sep 2022 810th mbittner20 683 153 10ms 27 May 2023 812th lynn 683 164 15ms 17 Nov 2021 813th janbehrens 🇩🇪 683 219 2ms 14 Sep 2022 814th DialFrost 🇸🇬 681 135 1,088ms 1 Sep 2025 815th JDiLenarda 🇫🇷 681 214 390ms 18 Nov 2023 816th djeedjay 🇳🇱 680 198 2ms 25 Oct 2020 816th LorenzoDeGaspari 680 198 2ms 2 May 2024 818th jared-hughes 679 55 34ms 6 Nov 2021 818th SirBogman 🇺🇸 679 55 33ms 22 Sep 2025 820th L1Wulf 679 133 12ms 4 Feb 2022 820th fitzdotlol 🇺🇸 679 133 11ms 20 Mar 2022 820th DialFrost 🇸🇬 679 133 11ms 1 Feb 2023 820th LukeBridges 🇬🇧 679 133 19ms 12 Mar 2024 820th wh3n3v3r 🇨🇿 679 133 10ms 8 Nov 2024 820th Palladium02 679 133 13ms 28 May 2025 826th Starwort 🇬🇧 678 154 11ms 5 Mar 2021 826th nstearns96 🇬🇧 678 154 10ms 15 Dec 2022 828th billings7 🇬🇧 678 215 409ms 21 Nov 2021 829th Bubbler-4 677 134 70ms 13 Sep 2023 830th snoozingnewt 🇨🇦 675 197 108ms 2 Oct 2025 831st jared-hughes 674 120 103ms 17 Jul 2022 832nd fuzzylojik-golf 🇺🇸 674 133 432ms 3 Jul 2025 833rd KatieLG 🇬🇧 674 134 10ms 18 Apr 2021 833rd Yax42 🇫🇷 674 134 11ms 20 Jan 2026 833rd JOrE20 674 134 11ms 27 Jan 2026 836th sciencejiho 674 155 10ms 26 Sep 2024 837th cipharius 674 177 2ms 20 Jan 2021 838th snoozingnewt 🇨🇦 674 227 2,934ms 6 Oct 2025 839th czylabsonasa 🇭🇺 672 116 257ms 15 Jun 2022 839th MarcMush 🇫🇷 672 116 281ms 15 Nov 2023 841st MeWhenI 🇻🇦 672 140 156ms 3 Aug 2024 842nd janAkali 🇷🇺 671 190 3ms 17 Feb 2026 843rd MeWhenI 🇻🇦 671 197 43ms 13 Feb 2025 844th jgbaldwinbrown 671 236 300ms 29 Jun 2021 845th stefangimmillaro 670 153 2,718ms 31 Oct 2024 845th emgordon154 670 153 2,651ms 24 Jul 2025 845th jkelly467 670 153 2,888ms 16 Feb 2026 848th Anonymousellama21 670 156 10ms 8 Dec 2021 848th Bananapants22 670 156 10ms 30 Aug 2022 848th NickTheEASDude 🇺🇸 670 156 11ms 6 May 2024 851st raphaelimahorn 669 135 11ms 15 Oct 2020 851st Larento 669 135 12ms 14 Oct 2023 851st helbling 🇨🇭 669 135 10ms 16 Jul 2024 854th KatieLG 🇬🇧 669 163 5ms 19 May 2021 855th mdznr 668 199 124ms 14 Dec 2020 856th KatieLG 🇬🇧 668 218 406ms 1 May 2024 857th primo-ppcg 🇹🇭 667 56 34ms 16 Oct 2020 858th Andre3582 665 157 12ms 6 Nov 2020 858th DrPiranoid 665 157 10ms 24 Sep 2022 858th Bodo171 665 157 17ms 27 Nov 2022 858th gthayden23 665 157 30ms 29 Oct 2023 858th vhoulbreque 🇫🇷 665 157 1,458ms 3 Dec 2025 858th retrohun 665 157 19ms 22 Feb 2026 864th elisherer 🇮🇱 664 136 12ms 9 Oct 2020 864th KrausRaus 🇺🇸 664 136 10ms 9 Dec 2020 864th akshatj27 🇦🇶 664 136 12ms 30 Dec 2021 864th chasewalden 664 136 12ms 25 Apr 2023 868th LHLaurini 🇧🇷 664 203 2ms 30 Jun 2024 869th saito-ta 🇯🇵 664 238 1,169ms 4 Jul 2022 870th CaedenHarper 🇨🇦 664 265 416ms 3 Oct 2025 871st CatsAreFluffy 662 231 59ms 12 Dec 2022 872nd verticallity 662 254 176ms 6 Apr 2022 873rd cbrt-x 662 266 467ms 29 Sep 2021 874th edsrzf 🇳🇿 661 155 2,966ms 25 Oct 2024 875th Omega65536 🇩🇪 661 158 10ms 7 Jan 2021 875th Bonjour27891 🇻🇳 661 158 11ms 13 Mar 2022 875th Tess2662 661 158 15ms 4 Mar 2023 875th jeff-at-tamer-dot-codes 🇺🇸 661 158 10ms 18 May 2023 875th Player01osu 661 158 10ms 29 Oct 2023 875th epic-programmer-guy 661 158 10ms 31 Dec 2023 First Prev 801–880 of 1,361 Next Last
