The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 31 mins. Why not try and solve them ahead of time?
Ellipse Perimeters 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 1st saito-ta 🇯🇵 0 19 31ms 17 Oct 2025 2nd Shanethegamer 🇺🇸 0 23 135ms 19 Oct 2025 3rd namelessiw 0 24 158ms 20 Oct 2025 4th 2bular 0 33 2ms 19 Oct 2025 5th ovs-code 🇩🇪 0 34 2ms 17 Oct 2025 6th Shanethegamer 🇺🇸 0 35 90ms 20 Oct 2025 7th Shanethegamer 🇺🇸 0 40 1ms 27 Oct 2025 8th Shanethegamer 🇺🇸 0 44 3ms 21 Oct 2025 9th 2bular 0 45 33ms 19 Oct 2025 10th saito-ta 🇯🇵 0 49 3ms 17 Oct 2025 11th saito-ta 🇯🇵 0 50 2ms 17 Oct 2025 12th rucin93 🇵🇱 0 53 1ms 11 Dec 2025 13th Shanethegamer 🇺🇸 0 59 35ms 19 Oct 2025 14th Shanethegamer 🇺🇸 0 63 1,232ms 19 Oct 2025 15th rucin93 🇵🇱 0 64 9ms 19 Oct 2025 16th aiwana 0 67 3ms 16 Oct 2025 16th Shanethegamer 🇺🇸 0 67 3ms 25 Oct 2025 16th bitsandbeyond 🇳🇱 0 67 300ms 8 Dec 2025 19th lyphyser 0 68 53ms 11 Nov 2025 20th Shanethegamer 🇺🇸 0 70 347ms 21 Oct 2025 21st rucin93 🇵🇱 0 72 170ms 19 Oct 2025 21st stefangimmillaro 0 72 10ms 26 Oct 2025 23rd Shanethegamer 🇺🇸 0 75 282ms 23 Oct 2025 24th Shanethegamer 🇺🇸 0 76 11ms 18 Oct 2025 25th Shanethegamer 🇺🇸 0 77 3ms 28 Oct 2025 26th stefangimmillaro 0 78 32ms 19 Oct 2025 26th Matter1024 🇮🇳 0 78 33ms 15 Jan 2026 28th lukegustafson 🇺🇸 0 79 10ms 21 May 2025 28th Shanethegamer 🇺🇸 0 79 122ms 27 Oct 2025 30th Shanethegamer 🇺🇸 0 80 1ms 28 Oct 2025 30th Shanethegamer 🇺🇸 0 80 1ms 12 Nov 2025 32nd Shanethegamer 🇺🇸 0 82 378ms 19 Oct 2025 32nd stefangimmillaro 0 82 1,406ms 26 Oct 2025 34th Shanethegamer 🇺🇸 0 83 63ms 20 Oct 2025 35th khvdm 0 84 9ms 28 Oct 2025 36th MeepMoop 0 85 1ms 6 Apr 2025 36th stefangimmillaro 0 85 9ms 25 Oct 2025 38th Shanethegamer 🇺🇸 0 86 128ms 20 Oct 2025 39th XenThe 🇬🇧 0 87 10ms 15 Jul 2025 40th FlyingPenguin223 0 88 1ms 6 Apr 2025 41st Shanethegamer 🇺🇸 0 90 65ms 18 Oct 2025 42nd kg583 🇺🇸 0 91 427ms 1 Dec 2024 43rd Shanethegamer 🇺🇸 0 93 30ms 19 Oct 2025 43rd Shanethegamer 🇺🇸 0 93 81ms 23 Oct 2025 45th MeWhenI 🇻🇦 0 94 37ms 15 Apr 2025 45th gigaprofisi 🇺🇸 0 94 9ms 10 Aug 2025 45th DialFrost 🇸🇬 0 94 9ms 18 Oct 2025 48th koipondx86 0 96 1ms 6 Apr 2025 48th DialFrost 🇸🇬 0 96 112ms 13 Jul 2025 50th lifthrasiir 🇰🇷 0 97 387ms 2 Dec 2024 50th Palladium02 0 97 10ms 2 May 2025 52nd stefangimmillaro 0 98 43ms 25 Oct 2025 52nd Shanethegamer 🇺🇸 0 98 1,021ms 27 Oct 2025 54th Bubbler-4 0 99 10ms 23 Oct 2025 55th ovs-code 🇩🇪 0 100 30ms 17 Oct 2025 55th sean-niemann 🇺🇸 0 100 384ms 16 Jan 2026 57th AlephSquirrel 0 101 10ms 25 Nov 2024 57th hallvabo 🇳🇴 0 101 9ms 25 Dec 2024 57th lukegustafson 🇺🇸 0 101 9ms 21 May 2025 60th kg583 🇺🇸 0 102 10ms 19 Oct 2025 60th Shanethegamer 🇺🇸 0 102 4ms 24 Oct 2025 60th Shanethegamer 🇺🇸 0 102 2,546ms 28 Oct 2025 60th madex 🇩🇪 0 102 10ms 12 days ago 64th Shanethegamer 🇺🇸 0 103 150ms 28 Oct 2025 65th lifthrasiir 🇰🇷 0 104 9ms 22 Nov 2024 65th Matter1024 🇮🇳 0 104 9ms 16 Nov 2025 65th anter69 🇭🇺 0 104 9ms 20 Jan 2026 68th targrik 0 105 9ms 23 Mar 2025 68th Shanethegamer 🇺🇸 0 105 4ms 29 Oct 2025 70th Shanethegamer 🇺🇸 0 106 72ms 28 Oct 2025 71st targrik 0 108 4ms 8 Oct 2025 72nd CatsAreFluffy 0 109 50ms 1 Nov 2025 73rd davecame 0 110 10ms 3 Oct 2025 73rd Shanethegamer 🇺🇸 0 110 461ms 28 Oct 2025 73rd Shanethegamer 🇺🇸 0 110 99ms 28 Oct 2025 73rd Florian-Mt 0 110 10ms 12 Dec 2025 77th aaardwark 0 111 9ms 2 Jun 2025 77th Shanethegamer 🇺🇸 0 111 421ms 24 Oct 2025 77th Shanethegamer 🇺🇸 0 111 110ms 9 Dec 2025 80th Shanethegamer 🇺🇸 0 112 7ms 28 Oct 2025 1–80 of 116 Next Last