The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 35 hours. Why not try and solve them ahead of time?
Number Spiral 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 81st ovs-code 🇩🇪 888 113 10ms 12 Nov 2024 82nd JayXon 🇺🇸 886 107 149ms 5 Sep 2023 83rd 4hg 🇺🇸 885 26 32ms 4 Aug 2023 84th nwellnhof 🇩🇪 885 115 393ms 5 Mar 2023 85th JayXon 🇺🇸 885 125 108ms 3 Apr 2024 86th JayXon 🇺🇸 885 126 409ms 24 Apr 2022 87th lynn 885 128 30ms 15 Jun 2024 88th DialFrost 🇸🇬 884 130 1,023ms 26 Feb 2025 89th ovs-code 🇩🇪 883 112 117ms 30 Jan 2024 90th emplv 🇱🇻 883 121 116ms 26 Oct 2022 91st sisyphus-ppcg 🇦🇺 882 80 64ms 26 Jan 2022 92nd zacjl 882 114 40ms 13 Feb 2025 93rd Steffan153 🇫🇮 881 146 277ms 26 Feb 2024 93rd sean-niemann 🇺🇸 881 146 288ms 6 May 2024 95th GolfingSuccess 🇬🇷 880 45 46ms 5 Dec 2022 96th lynn 880 121 1,271ms 15 Jun 2024 96th JayXon 🇺🇸 880 121 1,184ms 16 Jun 2024 98th edsrzf 🇳🇿 880 126 2ms 26 Feb 2026 99th lifthrasiir 🇰🇷 880 171 7ms 19 Dec 2024 100th ovs-code 🇩🇪 879 136 3ms 12 Nov 2024 101st sean-niemann 🇺🇸 879 151 41ms 14 May 2024 102nd JayXon 🇺🇸 878 120 2,606ms 25 Nov 2024 103rd Steffan153 🇫🇮 878 129 29ms 11 days ago 104th Mukundan314 877 88 10ms 16 Dec 2025 105th dvargas46 🇺🇸 877 96 5ms 18 Feb 2023 106th m-tkach 🇺🇦 877 204 2ms 15 Jan 2025 107th sisyphus-ppcg 🇦🇺 876 81 3ms 23 Nov 2022 108th nwellnhof 🇩🇪 876 102 1ms 28 Jan 2022 108th JayXon 🇺🇸 876 102 1ms 30 Jan 2022 108th emplv 🇱🇻 876 102 1ms 27 Apr 2022 111th emplv 🇱🇻 876 154 57ms 30 Aug 2023 112th Natanaelel 🇸🇪 875 52 123ms 16 Apr 2025 113th JayXon 🇺🇸 875 98 1ms 29 Jan 2024 114th nwellnhof 🇩🇪 875 133 523ms 25 Sep 2025 115th emplv 🇱🇻 875 147 293ms 26 Feb 2024 116th MeWhenI 🇻🇦 874 137 9ms 24 Dec 2024 117th AdrienHache 🇫🇷 871 65 52ms 11 Oct 2024 118th MeWhenI 🇻🇦 871 126 2ms 26 Feb 2025 119th sean-niemann 🇺🇸 871 127 99ms 28 Dec 2024 120th m-tkach 🇺🇦 871 130 30ms 11 Dec 2023 121st ovs-code 🇩🇪 871 136 4ms 19 Jul 2023 122nd primo-ppcg 🇹🇭 871 280 11ms 13 Aug 2025 123rd neel11235813 868 103 1ms 15 Oct 2023 123rd lynn 868 103 2ms 15 Jun 2024 125th Steffan153 🇫🇮 868 116 74ms 10 hours ago 126th error256 867 89 10ms 10 Dec 2024 127th targrik 867 102 5ms 26 Dec 2025 128th ovs-code 🇩🇪 867 127 136ms 28 Jun 2023 129th edsrzf 🇳🇿 866 106 7ms 26 Feb 2026 130th emgordon154 866 131 103ms 4 Dec 2025 131st btnlq 865 116 10ms 1 Feb 2022 132nd emgordon154 862 183 1,511ms 5 Feb 2025 133rd emgordon154 862 213 1,694ms 24 Dec 2025 134th lifthrasiir 🇰🇷 861 35 2ms 28 Nov 2024 135th SirBogman 🇺🇸 861 46 40ms 17 Sep 2022 136th Steffan153 🇫🇮 860 82 37ms 26 days ago 137th ovs-code 🇩🇪 860 104 2ms 12 Feb 2023 137th KasperKivimaeki 🇫🇮 860 104 5ms 11 Nov 2025 139th sisyphus-ppcg 🇦🇺 859 53 141ms 27 Jan 2022 140th Lydxn 🇨🇦 859 85 455ms 26 Jan 2024 140th sisyphus-ppcg 🇦🇺 859 85 528ms 2 Sep 2024 142nd emplv 🇱🇻 859 103 7ms 8 Dec 2025 143rd RockOfStone 859 129 1ms 8 Mar 2024 144th Yewzir 🇧🇪 858 214 1,878ms 15 Nov 2025 145th Gaddy 🇫🇷 855 119 378ms 12 May 2022 146th Yewzir 🇧🇪 855 140 9ms 24 Dec 2024 147th jared-hughes 853 130 1ms 27 May 2022 148th Steffan153 🇫🇮 853 162 33ms 10 days ago 149th Steffan153 🇫🇮 852 89 861ms 21 Feb 2026 150th JayXon 🇺🇸 852 90 1,429ms 28 Jan 2022 150th pardouin 🇫🇷 852 90 1,541ms 8 Aug 2025 152nd scpchicken 🇵🇼 852 116 117ms 4 Feb 2023 153rd MeWhenI 🇻🇦 852 256 5ms 1 Jul 2022 154th NewDefectus 🇮🇱 851 105 1ms 27 Jan 2022 154th Alex-x90 🇺🇸 851 105 1ms 14 Nov 2022 154th inventshah 851 105 1ms 16 Nov 2022 154th jared-hughes 851 105 1ms 13 Feb 2023 154th xsot 🇸🇬 851 105 2ms 11 Aug 2024 159th Lydxn 🇨🇦 850 83 33ms 28 May 2022 159th nwellnhof 🇩🇪 850 83 33ms 5 Oct 2022 First Prev 81–160 of 1,804 Next Last