The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 13 hours. Why not try and solve them ahead of time?
Highly Composite Numbers 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 241st HumanoidCPU 0 432 10ms 28 Jan 2025 241st KatieLG 🇬🇧 0 432 10ms 27 Apr 2025 243rd Shanethegamer 🇺🇸 0 433 1,409ms 13 Jan 2025 243rd HumanoidCPU 0 433 1,419ms 28 Jan 2025 243rd KatieLG 🇬🇧 0 433 1,441ms 27 Apr 2025 246th KatieLG-Transpiler 🇬🇧 0 434 10ms 9 Jan 2026 247th Shanethegamer 🇺🇸 0 439 288ms 25 Dec 2024 247th HumanoidCPU 0 439 302ms 11 Jan 2025 247th Shanethegamer 🇺🇸 0 439 386ms 18 Apr 2025 247th KatieLG 🇬🇧 0 439 282ms 27 Apr 2025 247th HumanoidCPU 0 439 396ms 18 Aug 2025 252nd Shanethegamer 🇺🇸 0 445 355ms 11 May 2025 252nd HumanoidCPU 0 445 347ms 7 Dec 2025 254th KatieLG-Transpiler 🇬🇧 0 446 279ms 9 Jan 2026 255th HumanoidCPU 0 451 7ms 1 Dec 2025 255th KatieLG-Transpiler 🇬🇧 0 451 6ms 9 Jan 2026 257th Shanethegamer 🇺🇸 0 452 1ms 27 Dec 2024 257th HumanoidCPU 0 452 1ms 28 Jan 2025 257th KatieLG 🇬🇧 0 452 1ms 27 Apr 2025 260th KatieLG 🇬🇧 0 453 23ms 27 Apr 2025 260th KatieLG-Transpiler 🇬🇧 0 453 1ms 9 Jan 2026 262nd HumanoidCPU 0 454 38ms 28 Jan 2025 262nd KatieLG 🇬🇧 0 454 537ms 27 Apr 2025 264th KatieLG 🇬🇧 0 455 36ms 27 Apr 2025 264th KatieLG 🇬🇧 0 455 2ms 27 Apr 2025 264th HumanoidCPU 0 455 2ms 18 Aug 2025 264th Shanethegamer 🇺🇸 0 455 2ms 23 Sep 2025 264th KatieLG-Transpiler 🇬🇧 0 455 2ms 9 Jan 2026 269th KatieLG 🇬🇧 0 456 2ms 27 Apr 2025 269th KatieLG-Transpiler 🇬🇧 0 456 36ms 9 Jan 2026 269th KatieLG-Transpiler 🇬🇧 0 456 3ms 9 Jan 2026 272nd Shanethegamer 🇺🇸 0 457 3ms 25 Dec 2024 272nd KatieLG 🇬🇧 0 457 5ms 27 Apr 2025 272nd KatieLG-Transpiler 🇬🇧 0 457 100ms 9 Jan 2026 272nd KatieLG-Transpiler 🇬🇧 0 457 5ms 9 Jan 2026 276th KatieLG 🇬🇧 0 458 2ms 27 Apr 2025 276th KatieLG 🇬🇧 0 458 1,299ms 27 Apr 2025 276th KatieLG 🇬🇧 0 458 230ms 27 Apr 2025 276th KatieLG 🇬🇧 0 458 33ms 27 Apr 2025 276th HumanoidCPU 0 458 2ms 18 Aug 2025 276th KatieLG-Transpiler 🇬🇧 0 458 2ms 9 Jan 2026 276th KatieLG-Transpiler 🇬🇧 0 458 1,293ms 9 Jan 2026 276th KatieLG-Transpiler 🇬🇧 0 458 254ms 9 Jan 2026 284th KatieLG 🇬🇧 0 459 390ms 27 Apr 2025 285th HumanoidCPU 0 460 4ms 28 Jan 2025 285th KatieLG 🇬🇧 0 460 1ms 27 Apr 2025 285th KatieLG 🇬🇧 0 460 154ms 27 Apr 2025 285th KatieLG 🇬🇧 0 460 1ms 27 Apr 2025 285th KatieLG 🇬🇧 0 460 1,257ms 27 Apr 2025 285th KatieLG 🇬🇧 0 460 2ms 27 Apr 2025 285th KatieLG 🇬🇧 0 460 133ms 27 Apr 2025 285th Shanethegamer 🇺🇸 0 460 2ms 12 Nov 2025 285th HumanoidCPU 0 460 1ms 12 Nov 2025 285th KatieLG 🇬🇧 0 460 3ms 21 Nov 2025 285th KatieLG-Transpiler 🇬🇧 0 460 9ms 9 Jan 2026 285th KatieLG-Transpiler 🇬🇧 0 460 1ms 9 Jan 2026 285th KatieLG-Transpiler 🇬🇧 0 460 139ms 9 Jan 2026 298th KatieLG 🇬🇧 0 461 9ms 27 Apr 2025 298th KatieLG 🇬🇧 0 461 62ms 27 Apr 2025 298th KatieLG 🇬🇧 0 461 12ms 27 Apr 2025 298th KatieLG 🇬🇧 0 461 71ms 27 Apr 2025 302nd KatieLG 🇬🇧 0 462 67ms 27 Apr 2025 302nd KatieLG 🇬🇧 0 462 172ms 27 Apr 2025 302nd KatieLG-Transpiler 🇬🇧 0 462 73ms 9 Jan 2026 305th Shanethegamer 🇺🇸 0 463 1ms 25 Dec 2024 305th HumanoidCPU 0 463 1ms 28 Jan 2025 307th Shanethegamer 🇺🇸 0 464 112ms 26 Dec 2024 307th HumanoidCPU 0 464 119ms 28 Jan 2025 307th KatieLG 🇬🇧 0 464 111ms 27 Apr 2025 307th KatieLG 🇬🇧 0 464 1ms 27 Apr 2025 307th KatieLG-Transpiler 🇬🇧 0 464 1ms 9 Jan 2026 307th KatieLG-Transpiler 🇬🇧 0 464 339ms 9 Jan 2026 307th KatieLG-Transpiler 🇬🇧 0 464 118ms 9 Jan 2026 307th KatieLG-Transpiler 🇬🇧 0 464 9ms 9 Jan 2026 315th KatieLG 🇬🇧 0 465 58ms 27 Apr 2025 316th KatieLG 🇬🇧 0 466 7ms 27 Apr 2025 316th KatieLG 🇬🇧 0 466 9ms 27 Apr 2025 316th KatieLG-Transpiler 🇬🇧 0 466 10ms 9 Jan 2026 319th KatieLG-Transpiler 🇬🇧 0 470 1ms 9 Jan 2026 320th KatieLG 🇬🇧 0 472 114ms 27 Apr 2025 First Prev 241–320 of 378 Next Last
