The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 5 days. Why not try and solve them ahead of time?
Continued Fractions 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 240th Steffan153 🇫🇮 806 126 2ms 23 days ago 242nd rucin93 🇵🇱 804 106 166ms 24 days ago 243rd CaedenHarper 🇨🇦 802 178 419ms 4 days ago 244th sean-niemann 🇺🇸 800 153 450ms 21 days ago 245th albanian-laundromat 800 157 11ms 21 days ago 246th Natanaelel 🇸🇪 796 92 3ms 27 days ago 247th acotis 796 196 532ms 26 days ago 248th snoozingnewt 🇨🇦 794 162 117ms 19 days ago 249th MeWhenI 🇻🇦 793 110 1,252ms 21 days ago 250th albanian-laundromat 792 248 9ms 18 hours ago 251st albanian-laundromat 790 89 2ms 26 days ago 252nd kg583 🇺🇸 790 150 42ms 19 Nov 2025 253rd albanian-laundromat 790 205 59ms 18 days ago 254th emgordon154 789 114 6ms 25 days ago 255th canissimia 🇦🇶 788 279 2ms 14 days ago 256th JRaspass 🇬🇧 787 93 3ms 27 days ago 257th CaedenHarper 🇨🇦 786 108 888ms 22 days ago 258th albanian-laundromat 784 175 113ms 21 days ago 259th albanian-laundromat 783 178 89ms 21 days ago 260th emgordon154 783 318 1,699ms 25 days ago 261st Natanaelel 🇸🇪 779 169 139ms 20 days ago 262nd kg583 🇺🇸 776 131 10ms 26 days ago 263rd albanian-laundromat 776 299 1,446ms 23 days ago 264th albanian-laundromat 775 415 12ms 24 days ago 265th pardouin 🇫🇷 772 185 411ms 25 days ago 266th KatieLG 🇬🇧 770 125 421ms 27 days ago 267th Shanethegamer 🇺🇸 769 86 36ms 7 Dec 2025 268th Apfelvater 766 152 10ms 23 days ago 269th helbling 🇨🇭 763 115 10ms 23 days ago 270th anter69 🇭🇺 760 87 36ms 27 Nov 2025 271st BambooleanLogic 🇸🇪 757 116 13ms 24 days ago 271st CaedenHarper 🇨🇦 757 116 10ms 22 days ago 271st gigaprofisi 🇺🇸 757 116 10ms 12 days ago 274th tomh1012 756 154 10ms 24 days ago 275th Yax42 🇫🇷 756 157 483ms 13 Jan 2026 276th m-tkach 🇺🇦 755 168 5ms 21 days ago 277th albanian-laundromat 755 199 3ms 25 days ago 278th emgordon154 754 176 520ms 25 days ago 279th tailorspy 751 163 463ms 20 days ago 280th voytxt 🇨🇿 751 309 1,398ms 6 Feb 2026 281st emgordon154 748 151 7ms 20 days ago 282nd cros107 🇦🇺 746 156 10ms 25 days ago 283rd KatieLG 🇬🇧 743 89 37ms 27 days ago 284th scpchicken 🇵🇼 737 158 16ms 26 days ago 285th AdrienHache 🇫🇷 736 96 51ms 24 Feb 2026 286th GolfingSuccess 🇬🇷 736 145 17ms 5 days ago 287th LostSyntax21 🇬🇧 736 219 42ms 25 days ago 288th edsrzf 🇳🇿 733 213 244ms 22 days ago 289th zakariamouhid 732 120 14ms 24 days ago 289th Just4FunCoder 732 120 11ms 16 days ago 291st albanian-laundromat 726 140 2ms 19 hours ago 292nd Shanethegamer 🇺🇸 724 133 425ms 22 Nov 2025 293rd albanian-laundromat 722 175 1,404ms 22 days ago 294th Matter1024 🇮🇳 721 184 522ms 19 Feb 2026 295th Chinay-Domitrix 🇺🇸 720 155 2,620ms 24 days ago 296th dokutan 719 118 841ms 11 days ago 297th snoozingnewt 🇨🇦 718 135 127ms 25 days ago 298th pardouin 🇫🇷 715 166 485ms 25 days ago 299th albanian-laundromat 714 145 120ms 27 days ago 300th chenyuan33 714 163 11ms 21 Feb 2026 300th JOrE20 714 163 10ms 27 days ago 302nd snoozingnewt 🇨🇦 710 227 42ms 21 days ago 303rd MeWhenI 🇻🇦 706 144 2ms 21 days ago 303rd xiaoyiming123 706 144 2ms 8 days ago 305th madex 🇩🇪 702 159 2,680ms 5 days ago 306th retrohun 698 100 19ms 24 days ago 307th dokutan 698 148 2ms 21 days ago 308th roelderickx 697 167 12ms 12 days ago 309th bitsandbeyond 🇳🇱 693 168 10ms 19 Nov 2025 310th MeWhenI 🇻🇦 689 102 1ms 21 days ago 311th denkyuu1 689 169 18ms 41 hours ago 312th emgordon154 686 128 10ms 25 days ago 313th Herbert00709 🇵🇱 684 179 1,437ms 21 days ago 314th alexsave 681 129 13ms 27 days ago 315th Natanaelel 🇸🇪 677 150 2ms 22 days ago 316th elgan65536 🇺🇸 676 231 222ms 9 Feb 2026 317th Matter1024 🇮🇳 675 98 36ms 20 Dec 2025 318th NickTheEASDude 🇺🇸 675 153 2ms 17 days ago 319th albanian-laundromat 672 209 397ms 21 days ago 320th JOrE20 670 131 12ms 7 Jan 2026 First Prev 241–320 of 375 Next Last