The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 2 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 239th ovs-code 🇩🇪 802 101 9ms 20 Nov 2024 242nd sean-niemann 🇺🇸 800 139 59ms 13 May 2024 243rd emgordon154 799 96 1,433ms 19 Nov 2024 244th Steffan153 🇫🇮 799 111 7ms 28 hours ago 245th CaedenHarper 🇨🇦 799 112 2ms 11 Aug 2025 246th CaedenHarper 🇨🇦 799 161 293ms 11 Dec 2025 247th edsrzf 🇳🇿 796 172 36ms 23 hours ago 248th snoozingnewt 🇨🇦 795 97 10ms 1 Mar 2026 249th duckyluuk 🇳🇱 794 92 492ms 9 Jul 2024 250th sisyphus-ppcg 🇦🇺 794 140 67ms 26 Jan 2022 251st Frowny 793 29 33ms 26 Jan 2022 252nd primo-ppcg 🇹🇭 793 92 2ms 15 Nov 2022 253rd emgordon154 792 50 39ms 15 days ago 254th snoozingnewt 🇨🇦 791 140 109ms 21 Nov 2025 255th namelessiw 789 129 417ms 26 Jul 2025 256th ovs-code 🇩🇪 789 143 444ms 4 Mar 2022 256th DialFrost 🇸🇬 789 143 477ms 21 Dec 2023 258th clockworknazo 789 152 3ms 12 Jul 2023 259th NewDefectus 🇮🇱 787 103 9ms 28 Jan 2022 259th akshatj27 🇦🇶 787 103 10ms 28 Jan 2022 261st acotis 787 140 142ms 26 Sep 2025 262nd HumanoidCPU 786 141 2ms 24 Dec 2025 263rd emgordon154 785 114 2ms 7 Feb 2026 264th ovs-code 🇩🇪 784 90 36ms 11 Mar 2024 265th antimon2 🇯🇵 783 78 911ms 22 Oct 2024 266th emgordon154 783 144 518ms 1 Dec 2025 267th UnderKoen 🇳🇱 782 229 2ms 29 Jan 2024 268th primo-ppcg 🇹🇭 781 92 62ms 21 Sep 2023 269th sean-niemann 🇺🇸 781 97 1,090ms 21 Oct 2025 269th edsrzf 🇳🇿 781 97 797ms 14 hours ago 271st GolfingSuccess 🇬🇷 780 110 2ms 19 Nov 2023 272nd primo-ppcg 🇹🇭 780 173 25ms 10 Mar 2022 273rd Flekay 🇩🇪 779 99 9ms 16 days ago 274th Irratix 🇳🇱 779 104 9ms 29 Jan 2022 275th Yewzir 🇧🇪 779 127 6ms 23 Jan 2025 276th kg583 🇺🇸 778 114 8ms 27 hours ago 277th Yewzir 🇧🇪 778 115 1ms 17 Feb 2024 277th gastropner 778 115 1ms 14 Jul 2025 279th stefangimmillaro 778 141 2ms 9 Sep 2022 279th KatieLG 🇬🇧 778 141 2ms 28 Sep 2025 281st tomtheisen 🇺🇸 777 131 375ms 19 Jan 2023 282nd Yax42 🇫🇷 776 150 382ms 13 Jan 2026 282nd edsrzf 🇳🇿 776 150 370ms 12 hours ago 284th emgordon154 775 91 36ms 25 Sep 2025 285th sean-niemann 🇺🇸 774 136 2,480ms 30 Oct 2024 286th dylanarmstrong 772 105 8ms 17 Jan 2024 287th anter69 🇭🇺 771 100 10ms 2 Sep 2022 287th ryyyn 🇺🇸 771 100 10ms 15 Dec 2025 289th aksyristos 771 116 2ms 8 Dec 2022 289th GolfingSuccess 🇬🇷 771 116 1ms 19 Nov 2023 289th HumanoidCPU 771 116 1ms 29 Aug 2024 292nd sean-niemann 🇺🇸 769 115 5ms 17 Feb 2025 293rd kg583 🇺🇸 768 131 39ms 20 Mar 2025 294th janlelis 767 92 34ms 26 Jan 2022 294th scpchicken 🇵🇼 767 92 34ms 19 Jan 2023 294th sean-niemann 🇺🇸 767 92 36ms 30 Dec 2025 297th edsrzf 🇳🇿 767 123 5ms 26 Feb 2026 298th rucin93 🇵🇱 766 112 2ms 18 Nov 2025 299th NewDefectus 🇮🇱 765 74 52ms 27 Jan 2022 300th emgordon154 765 234 4ms 21 Oct 2025 301st sean-niemann 🇺🇸 764 101 9ms 7 Jan 2026 302nd emgordon154 763 138 2,527ms 12 Nov 2024 303rd DialFrost 🇸🇬 763 140 107ms 17 Nov 2023 304th emgordon154 760 98 31ms 23 days ago 305th Yax42 🇫🇷 760 134 439ms 13 Jan 2026 306th lynn 760 145 138ms 7 Jul 2024 307th m-tkach 🇺🇦 760 147 308ms 1 Aug 2023 308th DialFrost 🇸🇬 759 146 1ms 17 Nov 2023 309th ovs-code 🇩🇪 758 207 1,429ms 4 Feb 2025 310th GolfingSuccess 🇬🇷 756 102 10ms 2 Jun 2022 310th bizy-coder 756 102 9ms 27 Jun 2025 310th MeWhenI 🇻🇦 756 102 11ms 19 Dec 2025 313th xsot 🇸🇬 756 117 4ms 20 May 2025 314th namelessiw 756 154 513ms 15 Nov 2025 315th emgordon154 754 40 2ms 15 days ago 316th sean-niemann 🇺🇸 753 97 466ms 2 Jul 2025 316th kg583 🇺🇸 753 97 423ms 3 Sep 2025 316th snoozingnewt 🇨🇦 753 97 445ms 1 Mar 2026 319th stefangimmillaro 752 102 1,431ms 30 Dec 2024 320th DialFrost 🇸🇬 752 114 2ms 26 Jan 2024 First Prev 241–320 of 1,834 Next Last