The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 7 days. Why not try and solve them ahead of time?
United States 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 881st Terobero 261 403 11ms 3 Sep 2024 882nd thisishowmymindworks 🇳🇴 261 537 3ms 29 May 2024 883rd nephila-nacrea 🇬🇧 259 269 4ms 4 Sep 2021 884th rambox11 259 387 13ms 12 Feb 2020 885th salipshitz 259 405 10ms 20 Apr 2020 886th msbranicky 259 592 2ms 12 Aug 2023 887th BREMAUCY 🇫🇷 257 545 26ms 12 Oct 2025 888th awei82 256 294 36ms 30 Jun 2022 889th krzydoug 255 320 268ms 10 Jun 2020 890th mwitherow 254 414 10ms 7 Aug 2023 891st chunky 254 551 3ms 14 Oct 2020 892nd tomh1012 253 396 13ms 27 Sep 2020 893rd adamnielson42 🇺🇸 252 416 10ms 21 Aug 2023 894th Noah-Fox 252 950 2ms 25 May 2022 895th kypi 251 418 11ms 22 Feb 2020 895th alangodfrey 251 418 11ms 9 Apr 2020 897th richard-oelze 🇩🇪 250 402 16ms 11 Jun 2020 898th CatsAreFluffy 250 420 11ms 8 Feb 2023 899th funnyboy-roks 249 403 11ms 16 Jun 2024 899th snoozingnewt 🇨🇦 249 403 12ms 18 Jun 2024 901st try-except-try-accept 🇹🇭 249 422 10ms 28 Jun 2022 902nd seeaya 249 515 131ms 16 Oct 2021 903rd sebipopa 🇷🇴 248 405 13ms 17 May 2023 904th Andrey2001 248 423 10ms 13 Dec 2025 905th AaronKreipe 248 517 679ms 30 Jan 2020 906th dokutan 248 1,013 1,652ms 12 Jan 2025 907th celiendonze 🇨🇭 245 428 11ms 4 Jul 2023 908th kmathis22 245 570 27ms 25 Jan 2026 909th msbranicky 245 661 254ms 28 Oct 2023 910th pengu1n-master 244 431 14ms 13 Dec 2021 911th postie77 243 443 484ms 5 Jul 2023 912th perfunction 243 527 753ms 29 Jan 2020 913th MiranDaniel 🇨🇿 242 433 10ms 31 Aug 2023 914th RJFuller 242 434 10ms 8 Mar 2024 915th Chinay-Domitrix 🇺🇸 242 557 538ms 5 days ago 916th Shanethegamer 🇺🇸 240 532 4ms 1 May 2025 917th MeWhenI 🇻🇦 240 1,049 1,614ms 9 Feb 2025 918th non-bin 239 420 10ms 26 Jun 2025 919th Omega65536 🇩🇪 239 440 10ms 3 Dec 2022 920th bob-th 238 441 10ms 4 Jul 2022 921st Schmitt-Very-Cool 238 567 698ms 3 Oct 2025 922nd vonKrafft 236 445 16ms 27 Mar 2020 923rd frozolotl 236 687 166ms 14 Apr 2020 924th wearsunscreen 235 732 132ms 28 Sep 2023 925th Kaffeleif 234 443 6ms 21 Mar 2024 926th aresok 234 575 702ms 4 Jul 2023 927th renthist 233 462 458ms 30 Jan 2022 928th Naitzirch 🇳🇱 232 452 11ms 4 Jul 2025 929th RandGuy 231 454 10ms 4 Jul 2022 930th MeWhenI 🇻🇦 231 482 748ms 6 Nov 2023 931st heypwesto 🇳🇿 230 303 4ms 14 Apr 2021 932nd strout 230 750 134ms 24 Feb 2023 933rd Yewzir 🇧🇪 229 459 11ms 16 Apr 2023 934th dokutan 229 1,045 2ms 6 Dec 2024 935th vonKrafft 228 440 10ms 27 Mar 2020 936th dillon-duncando 228 460 16ms 4 Oct 2022 937th bidger 228 590 604ms 17 Nov 2022 938th addmai 227 463 11ms 31 Jul 2025 939th Andrey2001 226 415 818ms 28 Jan 2026 940th roy-sianez 226 452 2ms 16 Mar 2025 941st janga1 226 465 10ms 17 Aug 2021 942nd GitMensch 226 1,055 10ms 29 Nov 2024 943rd RaBa21 🇭🇺 225 467 12ms 18 Jul 2025 944th dokutan 225 504 3ms 3 Dec 2025 945th CatsAreFluffy 224 420 786ms 15 Jan 2024 946th Chinay-Domitrix 🇺🇸 224 481 4,338ms 5 days ago 947th brimstonetrader 222 472 10ms 29 Jan 2024 948th wackbyte 222 730 367ms 7 Dec 2023 949th s0129 221 474 11ms 4 Jul 2025 950th schachmattmatt 221 476 10ms 18 Aug 2021 951st rbertram90 🇬🇧 220 440 5ms 3 May 2025 952nd yoshykai 220 613 592ms 31 Mar 2025 953rd SuperFola 220 829 131ms 22 days ago 954th ShiraJoseph 🇺🇸 219 458 13ms 28 Jan 2023 955th mdnestor 218 481 10ms 23 Dec 2022 956th CarsonChr 🇺🇸 218 482 11ms 23 Sep 2022 957th dokutan 218 837 84ms 3 days ago 958th jjatria 217 347 187ms 6 Aug 2021 959th fuzzylojik-golf 🇺🇸 216 486 10ms 18 Jul 2025 960th prestosilver 🇺🇸 216 525 411ms 11 days ago First Prev 881–960 of 1,428 Next Last
