The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 2 days. Why not try and solve them ahead of time?
Partition Numbers 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 881st Shanethegamer 🇺🇸 103 652 2,391ms 26 Nov 2024 881st HumanoidCPU 103 652 2,800ms 6 Jan 2025 881st MeWhenI 🇻🇦 103 652 2,506ms 1 Mar 2025 881st KatieLG 🇬🇧 103 652 2,217ms 6 Mar 2025 881st CaedenHarper 🇨🇦 103 652 2,367ms 16 Aug 2025 886th KatieLG 🇬🇧 101 777 476ms 6 Mar 2025 887th Shanethegamer 🇺🇸 100 646 4ms 24 May 2025 887th KatieLG 🇬🇧 100 646 5ms 30 Nov 2025 889th Shanethegamer 🇺🇸 100 658 9ms 26 Nov 2024 889th HumanoidCPU 100 658 9ms 6 Jan 2025 889th dokutan 100 658 9ms 12 Mar 2025 889th CaedenHarper 🇨🇦 100 658 9ms 16 Aug 2025 893rd dokutan 100 670 5ms 21 Jun 2025 894th retrohun 99 444 2ms 28 Feb 2025 895th HumanoidCPU 99 648 3ms 6 Jan 2025 895th MeWhenI 🇻🇦 99 648 3ms 28 Feb 2025 895th CaedenHarper 🇨🇦 99 648 3ms 16 Aug 2025 895th KatieLG-Transpiler 🇬🇧 99 648 3ms 9 Jan 2026 899th Shanethegamer 🇺🇸 99 661 69ms 26 Nov 2024 899th HumanoidCPU 99 661 75ms 6 Jan 2025 899th CaedenHarper 🇨🇦 99 661 72ms 16 Aug 2025 902nd MeWhenI 🇻🇦 99 749 39ms 1 Mar 2025 902nd KatieLG 🇬🇧 99 749 36ms 6 Mar 2025 902nd CaedenHarper 🇨🇦 99 749 36ms 16 Aug 2025 905th KatieLG-Transpiler 🇬🇧 99 750 38ms 9 Jan 2026 906th KatieLG 🇬🇧 99 2,788 2ms 6 Mar 2025 906th KatieLG-Transpiler 🇬🇧 99 2,788 1ms 9 Jan 2026 908th dokutan 98 340 2ms 3 Mar 2025 909th KatieLG-Transpiler 🇬🇧 98 803 152ms 9 Jan 2026 910th KatieLG 🇬🇧 97 343 2ms 6 Mar 2025 911th HumanoidCPU 97 655 140ms 6 Jan 2025 911th CaedenHarper 🇨🇦 97 655 133ms 16 Aug 2025 913th KatieLG 🇬🇧 97 659 155ms 30 Nov 2025 914th KatieLG-Transpiler 🇬🇧 97 712 105ms 9 Jan 2026 915th Shanethegamer 🇺🇸 96 652 3ms 13 Dec 2024 915th HumanoidCPU 96 652 3ms 7 Jan 2025 915th MeWhenI 🇻🇦 96 652 3ms 28 Feb 2025 915th dokutan 96 652 3ms 3 Mar 2025 915th KatieLG 🇬🇧 96 652 3ms 6 Mar 2025 915th CaedenHarper 🇨🇦 96 652 3ms 16 Aug 2025 915th JOrE20 96 652 4ms 2 Jan 2026 922nd HumanoidCPU 96 656 125ms 6 Jan 2025 922nd MeWhenI 🇻🇦 96 656 129ms 1 Mar 2025 922nd KatieLG 🇬🇧 96 656 136ms 6 Mar 2025 922nd CaedenHarper 🇨🇦 96 656 125ms 16 Aug 2025 922nd prestosilver 🇺🇸 96 656 130ms 11 days ago 927th Shanethegamer 🇺🇸 96 663 1ms 26 Nov 2024 927th HumanoidCPU 96 663 2ms 6 Jan 2025 927th CaedenHarper 🇨🇦 96 663 2ms 16 Aug 2025 927th Maashau 96 663 2ms 12 Dec 2025 927th retrohun 96 663 2ms 4 days ago 932nd Shanethegamer 🇺🇸 95 651 66ms 26 Nov 2024 933rd HumanoidCPU 95 653 69ms 27 Jan 2025 934th MeWhenI 🇻🇦 95 654 66ms 1 Mar 2025 934th KatieLG 🇬🇧 95 654 61ms 6 Mar 2025 934th CaedenHarper 🇨🇦 95 654 64ms 16 Aug 2025 934th KatieLG-Transpiler 🇬🇧 95 654 62ms 9 Jan 2026 938th KatieLG 🇬🇧 94 649 74ms 30 Nov 2025 939th MeWhenI 🇻🇦 93 655 69ms 28 Feb 2025 939th CaedenHarper 🇨🇦 93 655 76ms 16 Aug 2025 939th KatieLG-Transpiler 🇬🇧 93 655 83ms 9 Jan 2026 942nd KatieLG 🇬🇧 92 712 826ms 30 Nov 2025 943rd KatieLG 🇬🇧 92 754 2ms 6 Mar 2025 943rd KatieLG-Transpiler 🇬🇧 92 754 1ms 9 Jan 2026 945th HumanoidCPU 91 754 4ms 7 Jan 2025 946th MeWhenI 🇻🇦 90 668 112ms 1 Mar 2025 947th HumanoidCPU 90 856 7ms 16 Aug 2025 947th CaedenHarper 🇨🇦 90 856 7ms 22 Feb 2026 949th HumanoidCPU 88 846 43ms 9 Mar 2025 950th KatieLG 🇬🇧 87 683 42ms 6 Mar 2025 951st KatieLG-Transpiler 🇬🇧 87 729 366ms 9 Jan 2026 952nd KatieLG 🇬🇧 87 760 9ms 6 Mar 2025 952nd KatieLG-Transpiler 🇬🇧 87 760 10ms 9 Jan 2026 954th KatieLG 🇬🇧 86 687 1ms 30 Nov 2025 955th KatieLG-Transpiler 🇬🇧 85 754 134ms 9 Jan 2026 956th KatieLG-Transpiler 🇬🇧 85 772 686ms 9 Jan 2026 957th KatieLG 🇬🇧 85 901 6ms 21 Feb 2026 958th dokutan 84 719 117ms 3 Mar 2025 959th KatieLG-Transpiler 🇬🇧 83 767 2ms 9 Jan 2026 960th KatieLG 🇬🇧 83 769 1ms 6 Mar 2025 First Prev 881–960 of 1,193 Next Last