The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 7 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 Shanethegamer 🇺🇸 570 130 429ms 22 Nov 2025 322nd BREMAUCY 🇫🇷 567 143 11ms 20 days ago 323rd Ripick 542 257 380ms 9 days ago 324th Apfelvater 533 152 10ms 20 days ago 325th Matter1024 🇮🇳 533 221 457ms 25 days ago 325th michelebastione 🇮🇹 533 221 460ms 5 days ago 327th tomh1012 526 154 10ms 21 days ago 328th matejmatik123 🇸🇰 521 233 1,344ms 23 days ago 329th cros107 🇦🇺 520 156 10ms 23 days ago 330th acollett89 520 161 11ms 18 hours ago 331st Matter1024 🇮🇳 518 98 36ms 20 Dec 2025 332nd KatieLG 🇬🇧 517 270 5ms 24 days ago 333rd scpchicken 🇵🇼 513 158 16ms 24 days ago 334th tomh1012 510 164 20ms 11 days ago 335th chenyuan33 497 163 11ms 21 Feb 2026 336th denkyuu1 495 154 238ms 8 days ago 337th bitsandbeyond 🇳🇱 494 269 42ms 20 Nov 2025 338th roelderickx 485 167 12ms 9 days ago 339th bitsandbeyond 🇳🇱 483 168 10ms 19 Nov 2025 340th denkyuu1 474 171 18ms 14 days ago 341st zgialor-lab 458 177 11ms 14 days ago 342nd albanian-laundromat 451 250 28ms 24 days ago 343rd matejmatik123 🇸🇰 449 217 2ms 23 days ago 344th bitsandbeyond 🇳🇱 443 163 3ms 19 Nov 2025 345th aksyristos 427 190 17ms 22 days ago 346th madeforlosers 406 206 10ms 6 days ago 347th Shanethegamer 🇺🇸 402 208 13ms 9 Dec 2025 348th JOrE20 400 127 35ms 24 days ago 349th AstroOrbis 384 211 10ms 23 days ago 350th bitsandbeyond 🇳🇱 354 411 280ms 19 Nov 2025 351st TJK-S 297 273 11ms 21 days ago 352nd fantaize 195 795 198ms 13 days ago 353rd CaedenHarper 🇨🇦 47 791 16ms 19 days ago 354th kg583 🇺🇸 0 15 220ms 24 days ago 355th 2bular 0 29 42ms 25 days ago 355th darrenks 🇺🇸 0 29 42ms 18 days ago 355th Natanaelel 🇸🇪 0 29 43ms 17 days ago 358th plcc0 0 32 43ms 25 days ago 359th namelessiw 0 38 146ms 19 Nov 2025 360th GolfingSuccess 🇬🇷 0 47 105ms 21 Nov 2025 361st ovs-code 🇩🇪 0 62 5ms 23 days ago 362nd KatieLG 🇬🇧 0 74 5ms 23 days ago 363rd ovs-code 🇩🇪 0 76 15ms 24 days ago 364th dokutan 0 97 62ms 11 days ago 365th GolfingSuccess 🇬🇷 0 120 62ms 19 Nov 2025 365th GolfingSuccess 🇬🇷 0 120 3ms 3 days ago 367th GolfingSuccess 🇬🇷 0 125 8ms 21 Nov 2025 368th Matter1024 🇮🇳 0 140 69ms 14 days ago 369th GolfingSuccess 🇬🇷 0 147 6ms 25 Dec 2025 369th dokutan 0 147 9ms 11 days ago 371st dokutan 0 152 4ms 19 days ago First Prev 321–371 of 371