Gray Code Encoder 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 Gray Code Decoder Gray Code Encoder 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 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 Gray Code Decoder Gray Code Encoder 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 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 561st edsrzf 🇳🇿 726 88 352ms 15 days ago 562nd DialFrost 🇸🇬 722 88 101ms 18 days ago 563rd DialFrost 🇸🇬 720 56 2,639ms 16 Dec 2025 564th Shanethegamer 🇺🇸 718 89 341ms 6 May 2025 565th denkyuu1 715 55 9ms 2 days ago 566th ovs-code 🇩🇪 715 237 107ms 21 days ago 567th flekAI 711 101 170ms 3 days ago 568th JOrE20 708 24 91ms 13 Feb 2026 569th Shanethegamer 🇺🇸 708 84 474ms 26 Nov 2024 569th dokutan 708 84 420ms 20 days ago 571st jusaka 706 215 1,713ms 21 hours ago 572nd dokutan 705 99 12ms 20 days ago 573rd HumanoidCPU 699 85 451ms 21 days ago 574th Shanethegamer 🇺🇸 698 51 4ms 30 Apr 2025 574th albanian-laundromat 🇺🇸 698 51 5ms 22 days ago 576th madex 🇩🇪 698 130 350ms 19 days ago 577th GolfingSuccess 🇬🇷 697 73 16ms 8 May 2025 578th GolfingSuccess 🇬🇷 695 58 4,193ms 8 May 2025 579th Jonson26 689 112 395ms 6 days ago 580th KatieLG 🇬🇧 683 62 419ms 23 days ago 580th madex 🇩🇪 683 62 448ms 20 days ago 580th flekAI 683 62 393ms 4 days ago 580th jusaka 683 62 405ms 9 hours ago 584th madex 🇩🇪 678 104 210ms 20 days ago 585th HumanoidCPU 677 101 361ms 21 days ago 586th HumanoidCPU 676 97 7ms 20 days ago 587th Natanaelel 🇸🇪 672 130 360ms 2 May 2025 588th janAkali 🇷🇺 670 102 399ms 15 days ago 589th Shanethegamer 🇺🇸 669 98 7ms 6 May 2025 590th flekAI 668 136 295ms 3 days ago 591st flekAI 667 59 6ms 3 days ago 592nd plcc0 654 26 6ms 21 days ago 593rd GolfingSuccess 🇬🇷 650 111 109ms 21 days ago 594th jusaka 649 43 122ms 20 hours ago 595th dokutan 649 140 316ms 19 days ago 596th HumanoidCPU 647 108 13ms 20 days ago 597th albanian-laundromat 🇺🇸 646 99 343ms 25 days ago 598th Shanethegamer 🇺🇸 643 136 315ms 26 Nov 2024 599th BREMAUCY 🇫🇷 640 40 4ms 14 days ago 600th jusaka 638 121 399ms 26 hours ago 601st Natanaelel 🇸🇪 630 27 6ms 8 May 2025 602nd FlorianCassayre 🇫🇷 630 84 19ms 4 days ago 603rd jusaka 630 86 46ms 18 hours ago 604th madex 🇩🇪 627 118 17ms 18 days ago 605th flekAI 625 59 1,297ms 3 days ago 606th emgordon154 623 71 32ms 18 days ago 607th HumanoidCPU 621 103 329ms 21 days ago 608th Alex-x90 🇺🇸 613 114 4ms 4 days ago 609th Shanethegamer 🇺🇸 611 46 259ms 26 Nov 2024 610th flekAI 610 51 39ms 3 days ago 611th flekAI 606 46 113ms 4 days ago 612th HumanoidCPU 603 59 278ms 16 days ago 613th madex 🇩🇪 603 106 334ms 18 days ago 614th flekAI 601 74 869ms 3 days ago 615th jusaka 599 89 2,375ms 24 hours ago 616th prestosilver 🇺🇸 594 115 411ms 23 days ago 617th madex 🇩🇪 593 130 345ms 20 days ago 618th albanian-laundromat 🇺🇸 591 150 28ms 25 days ago 619th not-a-pokemon 587 119 15ms 22 days ago 620th madex 🇩🇪 586 48 310ms 20 days ago 621st CaedenHarper 🇨🇦 582 129 452ms 25 days ago 622nd flekAI 576 115 705ms 3 days ago 623rd retrohun 574 62 5ms 9 days ago 624th flekAI 573 123 223ms 3 days ago 625th madex 🇩🇪 565 121 366ms 18 days ago 626th JOrE20 557 159 69ms 14 Feb 2026 627th flekAI 550 109 117ms 3 days ago 628th madex 🇩🇪 550 182 7ms 18 days ago 629th snoozingnewt 🇨🇦 548 116 113ms 13 days ago 630th flekAI 547 141 350ms 3 days ago 631st snydej 534 99 45ms 22 Nov 2024 632nd jusaka 526 126 110ms 23 hours ago 633rd ComradeSquirrel 525 133 15ms 3 days ago 634th jusaka 519 175 307ms 24 hours ago 635th emgordon154 516 150 15ms 9 May 2025 636th jusaka 514 121 17ms 20 hours ago 637th madex 🇩🇪 509 112 1,473ms 18 days ago 638th jusaka 505 73 1,350ms 23 hours ago 639th flekAI 503 89 182ms 3 days ago 640th jusaka 500 148 19ms 23 hours ago First Prev 561–640 of 769 Next Last