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?
Most tied gold medals in Crystal in chars. Achievements Cheevos Holes Languages Medals Miscellaneous Overall 💎 Diamond Deltas Most Tied 🥇 Golds Oldest 💎 Diamonds Oldest 🦄 Unicorns 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 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 All Bytes Chars Overall 💎 Diamond Deltas Most Tied 🥇 Golds Oldest 💎 Diamonds Oldest 🦄 Unicorns Scoring All 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 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 # Hole Total 1st Levenshtein Distance 34 2nd Niven Numbers 20 2nd Pernicious Numbers 20 4th Fibonacci 18 5th Niven Numbers (Long) 16 6th Divisors 14 7th Catalan Numbers 13 7th Prime Numbers (Long) 13 9th Evil Numbers 12 9th Leap Years 12 9th Odious Numbers 12 9th Odious Numbers (Long) 12 13th Evil Numbers (Long) 11 14th Abundant Numbers (Long) 10 14th Kolakoski Sequence 10 14th Pernicious Numbers (Long) 10 17th Happy Numbers (Long) 9 17th Roman to Arabic 9 19th Happy Numbers 8 19th Ordinal Numbers 8 21st Prime Numbers 7 22nd Lucky Numbers 6 22nd Rule 110 6 24th Tic-tac-toe 5 24th Transpose Sentence 5 26th Collatz 4 26th CSS Colors 4 26th Emojify 4 26th Quine 4 26th Sierpiński Triangle 4 31st Christmas Trees 3 31st Day of Week 3 31st DFA Simulator 3 31st Diamonds 3 31st Emirp Numbers 3 31st Fizz Buzz 3 31st Inventory Sequence 3 31st Kaprekar Numbers 3 31st Look and Say 3 31st Mandelbrot 3 31st Pascal’s Triangle 3 31st Reversi 3 31st Van Eck Sequence 3 44th Abundant Numbers 2 44th Arithmetic Numbers 2 44th Card Number Validation 2 44th Farey Sequence 2 44th Foo Fizz Buzz Bar 2 44th Forsyth–Edwards Notation 2 44th Fractions 2 44th Game of Life 2 44th Gijswijt’s Sequence 2 44th ln 2 2 44th Lucky Tickets 2 44th Minesweeper 2 44th Multitap Input 2 44th Partition Numbers 2 44th Repeating Decimals 2 44th Star Wars GPT 2 44th Ten-pin Bowling 2 44th Tower of Hanoi 2 44th Zeckendorf Representation 2 44th γ 2 44th φ 2 44th 𝑒 2 66th 12 Days of Christmas 1 66th 24 Game 1 66th 99 Bottles of Beer 1 66th Arabic to Roman 1 66th Arrows 1 66th Ascending Primes 1 66th ASCII Table 1 66th Billiards 1 66th brainfuck 1 66th Calendar 1 66th Catalan’s Constant 1 66th Continued Fractions 1 66th Cubes 1 66th Emirp Numbers (Long) 1 66th Factorial Factorisation 1 1–80 of 126 Next Last