The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 29 hours. Why not try and solve them ahead of time?
Emojify 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 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 Chars Time Submitted 560th amollberg 🇸🇪 486 166 17ms 29 Jan 2022 562nd rgthree 486 209 12ms 24 Aug 2023 563rd Natanaelel 🇸🇪 485 109 4ms 22 Jul 2022 564th kurkale6ka 485 150 4ms 19 Dec 2023 564th blaztoma 🇱🇹 485 150 6ms 25 Oct 2025 566th HumanoidCPU 484 153 510ms 11 Jan 2026 567th UnderKoen 🇳🇱 484 158 2ms 22 Jan 2024 568th Yewzir 🇧🇪 484 179 2ms 9 Feb 2024 569th vezzick 483 167 16ms 8 Mar 2021 569th Indivicivet 483 167 20ms 19 Mar 2021 569th joshmoody24 483 167 12ms 15 Feb 2022 569th keegan-t 🇨🇦 483 167 17ms 31 Jan 2026 573rd BREMAUCY 🇫🇷 482 205 503ms 27 Mar 2024 574th stellartux 482 211 14ms 28 Dec 2023 575th crizin 🇰🇷 482 230 585ms 10 Sep 2023 576th bthalheim 480 168 20ms 10 Sep 2022 576th jmerle 🇳🇱 480 168 12ms 31 Oct 2022 576th dranjohn 480 168 16ms 11 Sep 2023 579th MeWhenI 🇻🇦 480 192 29ms 6 Jun 2023 580th kmathis22 480 231 599ms 6 Dec 2025 581st cipharius 480 267 120ms 21 Jan 2021 582nd bastienvoirin 🇫🇷 477 169 11ms 30 Nov 2020 583rd eikhr 🇳🇴 477 213 12ms 14 Jun 2021 583rd Ashikpaul 🇮🇳 477 213 10ms 29 Jul 2022 583rd zakariamouhid 477 213 13ms 8 Jun 2023 586th pandapawskat 476 182 2ms 10 Sep 2021 587th lewdev 🇺🇸 475 214 12ms 14 Mar 2024 588th ZakkkkAttackkkk 🇵🇭 474 170 10ms 6 Sep 2023 589th frankgraziano 473 197 5ms 28 Dec 2022 590th itserasmus 473 215 12ms 26 Jan 2024 590th Protothor 473 215 12ms 4 Jun 2025 592nd cjdyer 473 227 3,085ms 18 days ago 593rd mrmena 🇦🇺 472 171 10ms 7 Jun 2021 594th Ripick 471 200 444ms 3 Oct 2024 595th Re-Adventures 🇮🇳 471 216 13ms 23 Apr 2021 595th uttumuttu 🇫🇮 471 216 12ms 7 Mar 2022 595th funnyboy-roks 471 216 15ms 15 Jun 2024 598th BREMAUCY 🇫🇷 471 230 8ms 21 Feb 2025 599th JesseNoEyes 🇺🇸 469 172 10ms 24 Nov 2024 600th hazzery 469 229 2,860ms 5 days ago 601st janbehrens 🇩🇪 468 237 691ms 10 Jul 2023 602nd snoozingnewt 🇨🇦 467 222 114ms 20 Nov 2025 603rd Nwo5-trg 467 230 69ms 4 Feb 2026 604th JOrE20 466 173 11ms 21 Feb 2026 605th guliyevemil1 🇦🇿 465 276 127ms 31 Jan 2021 606th gifti258 464 199 92ms 15 Sep 2023 607th retrohun 464 201 5ms 30 Nov 2020 608th betaveros 463 174 10ms 2 Jan 2023 609th tomh1012 462 220 15ms 26 Nov 2020 610th za3k 461 175 10ms 10 Oct 2022 611th neihousaigaai 460 221 11ms 18 Apr 2021 611th SpareManiKatti 460 221 11ms 13 Oct 2021 613th ValentinCassayre 458 176 16ms 8 Oct 2022 614th ravnskjaer 🇩🇰 458 242 677ms 15 Dec 2025 615th NewDefectus 🇮🇱 456 177 17ms 4 Dec 2021 615th GolfingSuccess 🇬🇷 456 177 19ms 15 Nov 2022 617th Yewzir 🇧🇪 455 163 559ms 15 Jan 2024 618th NanduBC 453 178 12ms 18 Mar 2021 618th paiv 453 178 17ms 16 Jun 2025 620th jtnuttall 453 283 142ms 4 Oct 2022 621st CatsAreFluffy 452 225 11ms 29 Nov 2022 622nd myleopard 451 179 12ms 14 Oct 2021 622nd brochmann 🇸🇪 451 179 17ms 10 Feb 2022 622nd Trunksistor 🇫🇷 451 179 10ms 26 Apr 2022 622nd janbehrens 🇩🇪 451 179 12ms 10 Jul 2023 622nd inverseLorentz 🇦🇺 451 179 20ms 2 Jun 2024 627th janbehrens 🇩🇪 450 177 6ms 2 Jul 2023 628th jgbaldwinbrown 449 314 343ms 2 Sep 2021 629th eranws 448 227 12ms 24 Oct 2022 629th Salutations45 448 227 11ms 16 Nov 2024 629th iczelia 🇩🇪 448 227 12ms 10 Oct 2025 632nd kyleclaassen 446 181 17ms 8 Feb 2022 633rd Maximizer02 446 222 6ms 19 Mar 2024 634th Moreallure 446 228 13ms 5 May 2024 635th Yewzir 🇧🇪 444 244 7ms 23 Dec 2024 636th Kloppermand 🇩🇰 443 182 21ms 26 Aug 2021 636th fgrosshans 🇫🇷 443 182 10ms 19 Sep 2023 638th solmyr2000 442 196 2ms 27 Jul 2022 639th GolfingSuccess 🇬🇷 441 168 473ms 2 Mar 2024 640th Andrey135296 441 183 10ms 30 Apr 2022 First Prev 561–640 of 1,341 Next Last