The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 10 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 721st violeta-desantis 466 192 1ms 27 Apr 2024 722nd amollberg 🇸🇪 465 166 9ms 29 Jan 2022 723rd jerrandolph 465 277 280ms 20 Oct 2023 724th razetime 464 65 2ms 26 Jan 2022 724th Shanethegamer 🇺🇸 464 65 2ms 20 May 2022 724th bwenstar 464 65 2ms 11 Aug 2022 724th trist224 🇫🇷 464 65 2ms 28 Nov 2022 724th rucin93 🇵🇱 464 65 2ms 3 May 2023 724th snoozingnewt 🇨🇦 464 65 2ms 7 Sep 2023 724th neel11235813 464 65 2ms 20 Nov 2023 724th FortuiteMan 🇫🇷 464 65 2ms 10 Oct 2024 724th LostSyntax21 🇬🇧 464 65 2ms 19 Jan 2025 724th CornerMercury 🇬🇧 464 65 2ms 28 Jan 2026 734th Lv0Sys 🇵🇱 464 152 37ms 6 Dec 2025 735th albanian-laundromat 464 211 2ms 13 Jul 2025 736th MeWhenI 🇻🇦 463 259 3ms 2 Oct 2022 737th albanian-laundromat 462 158 482ms 12 Sep 2025 738th FortuiteMan 🇫🇷 462 167 10ms 5 Oct 2023 738th Andrey2001 462 167 9ms 8 days ago 740th msbranicky 462 212 2ms 3 Oct 2023 741st GolfingSuccess 🇬🇷 461 161 4ms 16 Aug 2024 742nd bac0id 461 241 69ms 23 Feb 2024 743rd Shanethegamer 🇺🇸 460 50 32ms 25 Jan 2022 743rd scpchicken 🇵🇼 460 50 33ms 13 Mar 2022 743rd yzhs 🇩🇪 460 50 32ms 6 Jun 2022 743rd DialFrost 🇸🇬 460 50 33ms 25 Dec 2022 743rd neel11235813 460 50 33ms 12 Feb 2023 748th KatieLG 🇬🇧 460 327 7ms 12 Mar 2023 748th msbranicky 460 327 6ms 15 Sep 2023 750th Shanethegamer 🇺🇸 460 341 1,433ms 13 Jan 2025 750th KatieLG 🇬🇧 460 341 1,449ms 13 Jan 2025 750th HumanoidCPU 460 341 1,419ms 13 Jan 2025 750th dokutan 460 341 1,418ms 13 Jan 2025 750th CaedenHarper 🇨🇦 460 341 1,411ms 25 Jan 2025 750th MeWhenI 🇻🇦 460 341 1,445ms 10 Feb 2025 756th albanian-laundromat 459 165 1,182ms 12 Nov 2025 757th janbehrens 🇩🇪 459 168 10ms 1 Jul 2022 757th CommandLeo 🇮🇹 459 168 17ms 14 Nov 2025 759th retrohun 458 184 20ms 30 Jan 2022 760th dokutan 455 241 2ms 26 Oct 2023 761st Bonjour27891 🇻🇳 454 170 20ms 15 Mar 2022 762nd frankgraziano 454 203 6ms 8 Feb 2026 763rd hamhub7 450 226 374ms 12 Aug 2022 764th CatsAreFluffy 450 247 86ms 12 Feb 2023 765th MeWhenI 🇻🇦 449 158 3ms 16 Apr 2023 766th yzhs 🇩🇪 448 172 16ms 3 Jun 2022 767th MeWhenI 🇻🇦 448 181 9ms 26 Jan 2022 768th voidgloom 446 173 10ms 23 Oct 2024 769th Shanethegamer 🇺🇸 446 307 4ms 7 Feb 2026 769th dokutan 446 307 2ms 10 days ago 769th CaedenHarper 🇨🇦 446 307 2ms 10 days ago 772nd HumanoidCPU 445 308 2ms 1 Jan 2026 772nd KatieLG 🇬🇧 445 308 2ms 21 Feb 2026 774th juliansiebert 🇩🇪 444 186 298ms 4 Aug 2022 775th eiburns 443 174 9ms 27 Oct 2023 775th wh3n3v3r 🇨🇿 443 174 10ms 12 Nov 2024 777th RobertHoeh 441 175 10ms 3 Mar 2025 778th DaCuteRaccoon 441 256 464ms 15 May 2022 779th Andrey-Plotnikov 440 184 9ms 27 Sep 2025 780th Msleizak 🇫🇷 439 555 11ms 4 Nov 2022 781st Vaekor 438 176 9ms 3 Aug 2023 781st m42km 438 176 16ms 25 Feb 2024 783rd Andrey2001 437 167 443ms 8 days ago 784th taind772 437 252 182ms 27 Jan 2022 785th olleicua 🇺🇸 436 186 10ms 2 Feb 2024 786th Msleizak 🇫🇷 436 411 1ms 4 Nov 2022 787th pascscha 433 178 18ms 28 Mar 2022 788th MeWhenI 🇻🇦 431 176 1,099ms 15 Sep 2025 789th wobblybits 431 179 10ms 23 Aug 2025 790th KatieLG 🇬🇧 431 188 9ms 25 Oct 2024 791st Andriamanitra 🇫🇮 430 164 37ms 29 Nov 2023 792nd dokutan 430 258 2ms 6 Mar 2024 793rd KatieLG 🇬🇧 428 165 33ms 13 Apr 2022 794th JRaspass 🇬🇧 427 311 37ms 13 Jun 2022 794th MeWhenI 🇻🇦 427 311 36ms 14 Jun 2022 794th dokutan 427 311 37ms 9 Jun 2024 794th CaedenHarper 🇨🇦 427 311 34ms 22 Jan 2025 798th msbranicky 426 181 16ms 12 Jul 2023 798th AstroOrbis 426 181 10ms 25 Nov 2025 800th Feniske 🇫🇷 425 194 276ms 10 Nov 2023 First Prev 721–800 of 1,828 Next Last