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?
Partition 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 401st KatieLG 🇬🇧 724 59 35ms 15 Mar 2025 401st stefangimmillaro 724 59 35ms 6 Apr 2025 403rd emgordon154 724 113 830ms 6 Apr 2025 404th MeWhenI 🇻🇦 720 90 2ms 28 Feb 2025 405th emgordon154 719 67 1,356ms 1 Mar 2025 405th dokutan 719 67 1,220ms 30 Mar 2025 407th frankgraziano 717 234 14ms 12 Oct 2025 408th edsrzf 🇳🇿 716 70 10ms 4 Mar 2025 409th ovs-code 🇩🇪 715 60 112ms 17 Dec 2025 410th SirBogman 🇺🇸 714 35 3ms 15 Apr 2025 411th Kacarott 🇦🇺 711 87 67ms 2 Jun 2025 412th luuumine 🇫🇷 710 117 454ms 10 Dec 2025 413th lukechampine 709 140 273ms 7 Jun 2025 414th MeWhenI 🇻🇦 708 68 1,331ms 28 Feb 2025 415th dokutan 708 74 948ms 22 Sep 2025 416th dokutan 707 121 350ms 24 Sep 2025 417th alexsave 706 71 11ms 16 Jan 2026 418th ryyyn 🇺🇸 706 75 10ms 9 Feb 2026 419th Yax42 🇫🇷 706 116 414ms 17 Feb 2026 420th blaztoma 🇱🇹 701 61 36ms 28 Oct 2025 421st snoozingnewt 🇨🇦 701 122 457ms 5 Dec 2025 422nd JOrE20 700 92 14ms 25 days ago 423rd dokutan 700 117 12ms 31 Mar 2025 424th snoozingnewt 🇨🇦 700 148 26ms 23 Sep 2025 425th edsrzf 🇳🇿 697 76 30ms 4 Feb 2026 426th luuumine 🇫🇷 697 93 2ms 7 Nov 2025 427th emgordon154 697 117 136ms 28 Feb 2025 428th snoozingnewt 🇨🇦 696 113 443ms 29 Sep 2025 429th pardouin 🇫🇷 694 63 2,032ms 15 Mar 2025 430th iczelia 🇩🇪 694 87 113ms 17 Oct 2025 431st targrik 694 143 290ms 6 Jul 2025 432nd snoozingnewt 🇨🇦 693 109 3ms 23 Sep 2025 433rd emgordon154 692 195 1,690ms 26 Nov 2025 434th Just4FunCoder 689 62 36ms 14 Sep 2025 435th snoozingnewt 🇨🇦 689 97 2,668ms 23 Sep 2025 436th scpchicken 🇵🇼 688 77 37ms 5 Mar 2025 436th duckyluuk 🇳🇱 688 77 109ms 29 Jul 2025 438th error256 687 90 68ms 1 Mar 2025 439th MeWhenI 🇻🇦 683 96 90ms 4 Mar 2025 440th codewrite 🇬🇧 682 120 419ms 22 Dec 2025 441st dokutan 680 146 304ms 30 Mar 2025 442nd duckyluuk 🇳🇱 679 77 554ms 29 Jul 2025 443rd ndren 679 78 11ms 2 Mar 2025 443rd bricknellj 679 78 11ms 5 Mar 2025 443rd KatieLG 🇬🇧 679 78 10ms 9 Mar 2025 443rd Just4FunCoder 679 78 11ms 14 Sep 2025 447th tatzyr 🇯🇵 678 63 37ms 27 Feb 2025 447th Natanaelel 🇸🇪 678 63 36ms 11 Mar 2025 449th snoozingnewt 🇨🇦 677 121 463ms 4 Oct 2025 450th JOrE20 676 110 42ms 25 days ago 451st blaztoma 🇱🇹 673 65 289ms 28 Oct 2025 452nd KatieLG 🇬🇧 671 78 551ms 9 Mar 2025 453rd jatloe 670 79 11ms 17 Mar 2025 453rd roupiq 🇵🇱 670 79 11ms 18 Jun 2025 453rd davecame 670 79 19ms 14 days ago 456th DialFrost 🇸🇬 670 89 39ms 11 Nov 2025 457th tobeannouncd 670 90 128ms 24 Apr 2025 458th snoozingnewt 🇨🇦 670 124 455ms 6 Oct 2025 459th namelessiw 669 128 365ms 2 Oct 2025 460th albanian-laundromat 668 155 26ms 12 days ago 461st Shanethegamer 🇺🇸 666 746 1ms 26 Nov 2024 461st HumanoidCPU 666 746 1ms 7 Jan 2025 461st KatieLG 🇬🇧 666 746 1ms 6 Mar 2025 461st CaedenHarper 🇨🇦 666 746 1ms 16 Aug 2025 465th KatieLG-Transpiler 🇬🇧 666 747 1ms 9 Jan 2026 466th albanian-laundromat 663 114 5ms 27 Jun 2025 467th error256 662 80 14ms 1 Mar 2025 467th klixel 🇨🇦 662 80 14ms 18 Mar 2025 467th Lv0Sys 🇵🇱 662 80 13ms 22 Feb 2026 470th snoozingnewt 🇨🇦 662 151 24ms 23 Sep 2025 471st dokutan 660 124 385ms 30 Mar 2025 472nd snoozingnewt 🇨🇦 658 96 128ms 23 Sep 2025 473rd snoozingnewt 🇨🇦 656 77 117ms 23 Sep 2025 474th Natanaelel 🇸🇪 653 69 4ms 11 Mar 2025 475th madex 🇩🇪 651 77 10ms 20 Mar 2025 476th AdrienHache 🇫🇷 650 126 388ms 10 Feb 2025 477th snoozingnewt 🇨🇦 649 101 95ms 23 Sep 2025 478th dokutan 648 66 36ms 30 Mar 2025 478th snoozingnewt 🇨🇦 648 66 35ms 23 Sep 2025 480th frankgraziano 647 119 6ms 21 Feb 2026 First Prev 401–480 of 1,201 Next Last