The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 28 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 881st ryanlanegit 342 219 280ms 19 Jun 2022 881st KatieLG 🇬🇧 342 219 264ms 15 Sep 2022 883rd Wildst 342 236 10ms 2 Nov 2022 883rd codingisgreatbutiamnot 342 236 10ms 11 Aug 2024 883rd mishak-sys 342 236 10ms 7 Mar 2025 883rd cros107 🇦🇺 342 236 10ms 2 Jan 2026 887th ThibWillFulll 342 297 14ms 6 May 2022 887th null-tangent 342 297 11ms 14 May 2023 887th MCausc78 🇺🇦 342 297 14ms 20 Aug 2023 890th Vaekor 342 324 667ms 26 Feb 2024 891st KatieLG 🇬🇧 341 260 4ms 23 Mar 2024 892nd TannerJ07 🇺🇸 341 369 186ms 4 Apr 2025 893rd Lv0Sys 🇵🇱 339 184 508ms 4 Dec 2025 894th MaxElf999 339 238 13ms 29 Sep 2022 895th GolfingSuccess 🇬🇷 338 232 2ms 2 Jun 2022 896th CatsAreFluffy 337 233 2ms 27 Jan 2023 897th KatieLG 🇬🇧 337 295 2ms 23 Mar 2024 898th MichalMarsalek 🇨🇿 337 307 94ms 12 Feb 2023 899th aksyristos 336 240 30ms 14 Mar 2023 899th Voltrifrodec 🇸🇰 336 240 13ms 27 Apr 2025 899th rustykitty 🇺🇸 336 240 18ms 25 Oct 2025 902nd hacker19374 336 303 14ms 13 Mar 2023 903rd Kenna-Blackburn 336 308 103ms 8 Jul 2025 904th tomh1012 335 241 10ms 30 Nov 2020 905th apokryfos 334 304 14ms 21 Aug 2023 905th LesBoys43 334 304 11ms 9 Nov 2025 907th jfrmilner 🇬🇧 333 225 306ms 13 Aug 2023 908th lacroixjonathan87 333 239 6ms 8 Dec 2021 909th aarnoldaas 333 305 11ms 7 May 2021 910th Re-Adventures 🇮🇳 332 240 5ms 7 Jul 2023 911th BrenSchaap 332 243 12ms 21 Oct 2021 911th Mathrew2012 332 243 16ms 9 Nov 2024 913th KatieLG 🇬🇧 332 312 119ms 14 Jan 2023 914th Natanaelel 🇸🇪 331 237 2ms 13 May 2022 915th olavaga 331 244 10ms 13 Aug 2021 915th ellieoverwood 331 244 10ms 29 Dec 2021 915th jeaosh 331 244 10ms 19 Nov 2024 915th te-chnical 331 244 10ms 5 Jan 2026 915th RodAlc24 🇪🇸 331 244 10ms 27 Feb 2026 920th 4hg 🇺🇸 330 203 39ms 19 Jun 2024 921st HassanAliKadhem 🇧🇭 330 300 484ms 15 Jan 2022 922nd KatieLG 🇬🇧 330 382 178ms 23 Mar 2024 923rd MCausc78 🇺🇦 329 303 217ms 18 Jan 2024 924th The-Wolfson 328 316 99ms 17 Dec 2024 925th IISResetMe 326 230 334ms 4 Jun 2025 926th KatieLG 🇬🇧 324 308 247ms 23 Mar 2024 927th dokutan 323 289 2ms 5 Jun 2024 928th emgordon154 321 238 2ms 24 Oct 2024 929th kejcao 🇨🇦 320 252 11ms 10 May 2024 930th blaztoma 🇱🇹 319 368 27ms 26 Dec 2025 931st msbranicky 318 326 96ms 12 Oct 2023 932nd janbehrens 🇩🇪 318 338 1,537ms 20 Nov 2022 933rd Mabeloid 🇳🇴 317 319 2ms 21 Sep 2024 934th hymanimy 316 255 17ms 23 Nov 2021 935th KatieLG 🇬🇧 315 344 8ms 12 Dec 2024 936th janbehrens 🇩🇪 313 199 734ms 17 Nov 2022 937th HassanAliKadhem 🇧🇭 313 258 10ms 4 Jan 2022 938th Henrixounez 313 325 12ms 17 Sep 2021 939th RealAMC 🇳🇿 311 279 2ms 26 Nov 2023 940th okhoel 🇳🇴 310 242 258ms 14 Sep 2022 941st madex 🇩🇪 310 260 11ms 16 Aug 2025 942nd SpareManiKatti 310 319 503ms 21 Nov 2021 943rd HumanoidCPU 309 335 109ms 12 Nov 2023 944th mrmena 🇦🇺 307 314 43ms 16 Apr 2024 945th kevinnaviapaiva 307 331 11ms 28 Feb 2025 946th KatieLG 🇬🇧 304 212 40ms 2 Oct 2025 947th Educorreia932 304 265 10ms 9 Apr 2021 948th Adelzu 304 325 436ms 21 Nov 2021 949th KatieLG 🇬🇧 304 384 1,440ms 23 Mar 2024 950th hamhub7 302 328 474ms 11 Aug 2022 951st Andriamanitra 🇫🇮 302 345 2ms 29 Oct 2022 952nd msbranicky 301 207 271ms 15 Jan 2024 953rd moustave 301 268 10ms 28 Mar 2025 954th MiffOttah 301 329 502ms 3 Jan 2026 955th stellartux 300 208 251ms 28 Dec 2023 956th KatieLG 🇬🇧 300 338 2ms 29 Mar 2024 957th KatieLG 🇬🇧 300 369 707ms 31 Oct 2022 958th martinnorling 🇸🇪 299 270 13ms 27 Jan 2022 959th violeta-desantis 299 290 2ms 15 Apr 2024 960th HumanEquivalentUnit 298 251 276ms 14 Jan 2022 First Prev 881–960 of 1,341 Next Last