The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 8 days. Why not try and solve them ahead of time?
Abundant Numbers (Long) 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 156th GolfingSuccess 🇬🇷 930 70 10ms 12 Nov 2025 162nd nwellnhof 🇩🇪 930 86 62ms 8 Mar 2023 162nd ovs-code 🇩🇪 930 86 200ms 24 Nov 2023 164th JayXon 🇺🇸 929 85 392ms 26 Sep 2025 165th alemelis 928 38 676ms 9 Mar 2023 166th Lydxn 🇨🇦 926 53 120ms 23 Jan 2023 166th m-tkach 🇺🇦 926 53 209ms 4 May 2023 166th JayXon 🇺🇸 926 53 12ms 12 Oct 2023 166th sean-niemann 🇺🇸 926 53 13ms 7 Jan 2024 170th Steffan153 🇫🇮 925 33 341ms 20 Nov 2022 170th primo-ppcg 🇹🇭 925 33 355ms 20 Nov 2022 170th Natanaelel 🇸🇪 925 33 324ms 13 May 2023 173rd JayXon 🇺🇸 925 48 150ms 8 Aug 2024 173rd sean-niemann 🇺🇸 925 48 141ms 8 Aug 2024 175th canissimia 🇦🇶 925 53 23ms 6 Dec 2025 176th hallvabo 🇳🇴 925 58 50ms 20 Nov 2022 176th jakobkordez 🇸🇮 925 58 30ms 20 Nov 2022 176th SirBogman 🇺🇸 925 58 50ms 20 Nov 2022 176th annaproxy 925 58 50ms 20 Nov 2022 176th anter69 🇭🇺 925 58 29ms 21 Nov 2022 176th Fishron 925 58 51ms 29 Nov 2022 176th QuincyNash 🇺🇸 925 58 30ms 1 Dec 2022 176th Alex-x90 🇺🇸 925 58 30ms 20 Jan 2023 176th Shanethegamer 🇺🇸 925 58 51ms 19 Mar 2023 176th Just4FunCoder 925 58 31ms 23 Mar 2023 176th neel11235813 925 58 51ms 3 Apr 2023 176th tri1212 🇻🇳 925 58 51ms 9 May 2023 176th 2011-Chan-Ethan 925 58 30ms 5 Jul 2023 176th fkantelberg 925 58 37ms 14 Jul 2023 176th ndren 925 58 31ms 25 Aug 2023 176th keelimeguy 🇺🇸 925 58 31ms 6 Nov 2023 176th KatieLG 🇬🇧 925 58 58ms 29 Jul 2024 176th emgordon154 925 58 30ms 1 Aug 2024 176th b-illy 🇬🇧 925 58 50ms 9 Aug 2024 176th duckyluuk 🇳🇱 925 58 29ms 15 Aug 2024 176th dokutan 925 58 30ms 15 Aug 2024 176th jatloe 925 58 30ms 27 Sep 2024 176th CaedenHarper 🇨🇦 925 58 50ms 3 Nov 2024 176th CornerMercury 🇬🇧 925 58 30ms 14 Feb 2025 176th fuzzylojik-golf 🇺🇸 925 58 50ms 9 Jun 2025 176th RaBa21 🇭🇺 925 58 31ms 19 Jul 2025 176th snoozingnewt 🇨🇦 925 58 51ms 28 Sep 2025 176th qpwoeirut 925 58 52ms 2 Oct 2025 176th albanian-laundromat 925 58 52ms 7 Oct 2025 176th Flekay 🇩🇪 925 58 42ms 15 Feb 2026 206th Shanethegamer 🇺🇸 924 55 470ms 26 Sep 2024 206th emgordon154 924 55 614ms 12 Apr 2025 206th albanian-laundromat 924 55 422ms 7 Oct 2025 209th Lydxn 🇨🇦 922 50 588ms 20 Nov 2022 209th saito-ta 🇯🇵 922 50 763ms 17 May 2023 211th Irratix 🇳🇱 922 62 207ms 15 May 2023 211th yzhs 🇩🇪 922 62 201ms 21 Jun 2023 211th alomiF 922 62 202ms 10 Sep 2023 211th strout 922 62 200ms 15 Dec 2023 211th inverseLorentz 🇦🇺 922 62 208ms 29 Feb 2024 211th Awsute 922 62 199ms 20 Aug 2024 211th the-zammers 922 62 209ms 2 Dec 2024 211th cbrt-x 922 62 200ms 20 Jan 2025 211th brimstonetrader 922 62 198ms 15 Apr 2025 211th dokutan 922 62 195ms 17 Jul 2025 211th YAJUE114514 922 62 194ms 27 Jul 2025 211th DanielVenable 922 62 200ms 2 Aug 2025 211th JOrE20 922 62 211ms 25 days ago 224th ovs-code 🇩🇪 922 65 1,791ms 24 Nov 2023 225th GrayJoKing 🇦🇺 921 48 238ms 17 Aug 2024 226th primo-ppcg 🇹🇭 921 80 128ms 20 Nov 2022 226th stefangimmillaro 921 80 133ms 1 Oct 2023 226th ovs-code 🇩🇪 921 80 130ms 22 Oct 2023 226th stackofbears 921 80 128ms 22 Oct 2024 226th MeWhenI 🇻🇦 921 80 130ms 27 Oct 2024 231st prplz 🇦🇺 919 46 2,639ms 11 Apr 2024 232nd DialFrost 🇸🇬 919 47 1,167ms 29 Aug 2025 232nd albanian-laundromat 919 47 1,161ms 22 Sep 2025 232nd xsot 🇸🇬 919 47 1,123ms 21 Dec 2025 232nd Steffan153 🇫🇮 919 47 860ms 13 Feb 2026 232nd sean-niemann 🇺🇸 919 47 851ms 14 Feb 2026 237th targrik 919 58 14ms 27 Jun 2025 238th Lydxn 🇨🇦 919 73 115ms 21 Jan 2023 239th Shanethegamer 🇺🇸 917 44 1,299ms 19 Nov 2022 239th MeWhenI 🇻🇦 917 44 1,219ms 12 May 2023 First Prev 161–240 of 2,740 Next Last