Gray Code Decoder 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 481st dokutan 635 74 239ms 7 days ago 482nd jusaka 635 116 413ms 2 days ago 483rd madex 🇩🇪 633 87 12ms 21 days ago 484th GolfingSuccess 🇬🇷 632 137 91ms 23 days ago 485th HumanoidCPU 627 133 174ms 24 days ago 486th IISResetMe 624 58 299ms 22 days ago 487th Shanethegamer 🇺🇸 624 94 394ms 13 Dec 2024 488th Shanethegamer 🇺🇸 624 96 427ms 3 Jun 2025 489th Shanethegamer 🇺🇸 623 114 1,432ms 9 May 2025 490th UnderKoen 🇳🇱 623 139 1,143ms 23 days ago 491st KatieLG 🇬🇧 617 82 424ms 17 days ago 492nd madex 🇩🇪 614 99 19ms 20 days ago 493rd brian124634 614 103 4ms 15 days ago 494th flekAI 609 162 312ms 5 days ago 495th albanian-laundromat 🇺🇸 608 98 135ms 23 Feb 2026 496th kasarino 608 104 3ms 23 days ago 497th scpchicken 🇵🇼 605 45 6ms 4 days ago 498th tomh1012 605 97 426ms 24 days ago 499th janAkali 🇷🇺 605 99 401ms 16 days ago 500th michelebastione 🇮🇹 599 98 441ms 18 days ago 501st dokutan 597 54 37ms 7 days ago 502nd madex 🇩🇪 597 119 1,394ms 20 days ago 503rd Shanethegamer 🇺🇸 597 121 166ms 13 Dec 2024 504th flekAI 596 66 1,496ms 5 days ago 505th Solathian 592 46 77ms 22 days ago 506th jusaka 592 256 178ms 36 hours ago 507th flekAI 586 55 40ms 5 days ago 508th dokutan 586 72 209ms 7 days ago 509th prestosilver 🇺🇸 571 105 381ms 16 days ago 510th madex 🇩🇪 571 129 366ms 21 days ago 511th Mikey-Beep 🇬🇧 568 99 25ms 9 days ago 512th flekAI 568 147 185ms 5 days ago 513th JOrE20 563 100 46ms 15 Dec 2025 513th tails618 563 100 22ms 4 days ago 515th albanian-laundromat 🇺🇸 562 75 268ms 2 Mar 2026 516th Shanethegamer 🇺🇸 553 146 31ms 9 May 2025 517th dokutan 542 75 777ms 7 days ago 518th JDiLenarda 🇫🇷 542 131 1,475ms 23 days ago 519th jusaka 536 111 106ms 2 days ago 520th Shanethegamer 🇺🇸 525 50 4,001ms 8 May 2025 521st flekAI 525 128 815ms 5 days ago 522nd Arkadios200 525 146 2,407ms 8 days ago 523rd madex 🇩🇪 519 100 118ms 20 days ago 524th dokutan 517 191 293ms 7 days ago 525th flekAI 508 80 851ms 5 days ago 526th dcc5480 507 111 20ms 2 days ago 527th madex 🇩🇪 495 53 475ms 21 days ago 528th HumanoidCPU 489 120 389ms 18 days ago 529th flekAI 478 154 354ms 5 days ago 530th flekAI 477 142 186ms 5 days ago 531st madex 🇩🇪 475 170 33ms 20 days ago 532nd flekAI 474 89 223ms 5 days ago 533rd Shanethegamer 🇺🇸 463 85 6ms 13 Dec 2024 534th flekAI 462 59 5ms 5 days ago 535th Shanethegamer 🇺🇸 454 107 8ms 9 May 2025 536th AstroOrbis 447 126 32ms 12 Aug 2025 537th jusaka 441 224 359ms 2 days ago 538th jusaka 433 107 2,247ms 2 days ago 539th Msleizak 🇫🇷 431 84 329ms 18 days ago 540th flekAI 431 139 378ms 5 days ago 541st kasarino 425 170 46ms 5 days ago 542nd madex 🇩🇪 422 78 91ms 20 days ago 543rd jusaka 416 79 50ms 2 days ago 544th dokutan 415 163 470ms 7 days ago 545th flekAI 409 127 121ms 5 days ago 546th flekAI 402 148 110ms 5 days ago 547th flekAI 401 177 1,381ms 5 days ago 548th jusaka 389 151 407ms 2 days ago 549th dokutan 386 152 431ms 7 days ago 550th jusaka 375 179 119ms 2 days ago 551st flekAI 375 235 31ms 5 days ago 552nd muser-logiccpu 🇺🇦 374 88 70ms 2 Sep 2025 553rd jusaka 372 170 4ms 2 days ago 554th flekAI 372 206 66ms 5 days ago 555th jusaka 367 197 148ms 2 days ago 556th flekAI 362 221 7ms 5 days ago 557th jusaka 361 130 153ms 44 hours ago 558th jusaka 358 189 186ms 2 days ago 559th jusaka 352 205 46ms 2 days ago 560th flekAI 347 169 457ms 5 days ago First Prev 481–560 of 655 Next Last