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 chars. 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 Chars Time Submitted 321st KatieLG 🇬🇧 571 89 37ms 26 days ago 322nd Shanethegamer 🇺🇸 570 130 429ms 22 Nov 2025 323rd BREMAUCY 🇫🇷 567 143 11ms 21 days ago 324th Ripick 542 257 380ms 11 days ago 325th Apfelvater 533 152 10ms 22 days ago 326th Matter1024 🇮🇳 533 221 457ms 27 days ago 326th michelebastione 🇮🇹 533 221 460ms 7 days ago 328th tomh1012 526 154 10ms 23 days ago 329th matejmatik123 🇸🇰 521 233 1,367ms 25 days ago 330th cros107 🇦🇺 520 156 10ms 24 days ago 331st acollett89 520 161 9ms 2 days ago 332nd Matter1024 🇮🇳 518 98 36ms 20 Dec 2025 333rd scpchicken 🇵🇼 513 158 16ms 26 days ago 334th tomh1012 510 164 12ms 13 days ago 335th chenyuan33 497 163 11ms 21 Feb 2026 336th denkyuu1 495 154 238ms 9 days ago 337th bitsandbeyond 🇳🇱 494 269 42ms 20 Nov 2025 338th roelderickx 485 167 12ms 11 days ago 339th bitsandbeyond 🇳🇱 483 168 10ms 19 Nov 2025 340th denkyuu1 480 169 18ms 27 hours ago 341st KatieLG 🇬🇧 466 270 5ms 26 days ago 342nd zgialor-lab 458 177 11ms 16 days ago 343rd albanian-laundromat 451 250 28ms 26 days ago 344th matejmatik123 🇸🇰 449 217 2ms 25 days ago 345th bitsandbeyond 🇳🇱 443 163 3ms 19 Nov 2025 346th aksyristos 427 190 17ms 24 days ago 347th madeforlosers 406 206 10ms 8 days ago 348th Shanethegamer 🇺🇸 402 208 13ms 9 Dec 2025 349th JOrE20 400 127 35ms 26 days ago 350th AstroOrbis 384 211 10ms 25 days ago 351st bitsandbeyond 🇳🇱 354 411 280ms 19 Nov 2025 352nd TJK-S 297 273 11ms 22 days ago 353rd fantaize 195 795 198ms 15 days ago 354th CaedenHarper 🇨🇦 47 791 16ms 21 days ago 355th kg583 🇺🇸 0 15 220ms 26 days ago 356th 2bular 0 29 42ms 27 days ago 356th darrenks 🇺🇸 0 29 42ms 20 days ago 356th Natanaelel 🇸🇪 0 29 43ms 19 days ago 359th plcc0 0 32 43ms 27 days ago 360th namelessiw 0 38 146ms 19 Nov 2025 361st GolfingSuccess 🇬🇷 0 47 105ms 21 Nov 2025 362nd ovs-code 🇩🇪 0 62 5ms 25 days ago 363rd KatieLG 🇬🇧 0 74 5ms 25 days ago 364th ovs-code 🇩🇪 0 76 15ms 26 days ago 365th dokutan 0 97 62ms 13 days ago 366th GolfingSuccess 🇬🇷 0 120 62ms 19 Nov 2025 366th GolfingSuccess 🇬🇷 0 120 3ms 5 days ago 368th GolfingSuccess 🇬🇷 0 125 8ms 21 Nov 2025 369th Matter1024 🇮🇳 0 140 69ms 16 days ago 370th GolfingSuccess 🇬🇷 0 147 6ms 25 Dec 2025 370th dokutan 0 147 9ms 13 days ago 372nd dokutan 0 152 4ms 21 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