The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 9 hours. Why not try and solve them ahead of time?
Transpose Sentence 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 799th damoose717 481 137 10ms 25 May 2025 802nd CaedenHarper 🇨🇦 481 234 32ms 15 days ago 803rd yoshykai 479 209 429ms 29 Mar 2025 804th BambooleanLogic 🇸🇪 478 132 10ms 7 Aug 2024 805th bobbysq 478 138 37ms 15 Sep 2024 805th Jaydosu 478 138 10ms 16 Apr 2025 805th SectorCorruptor 478 138 11ms 5 Feb 2026 805th jameswmccarty 478 138 12ms 11 days ago 809th Shanethegamer 🇺🇸 476 74 8ms 29 Jul 2024 810th madeforlosers 475 133 13ms 23 hours ago 811th wobblybits 474 139 13ms 15 Aug 2025 812th raphaelimahorn 471 134 11ms 15 days ago 813th KatieLG 🇬🇧 469 299 302ms 13 Oct 2024 814th nstearns96 🇬🇧 468 141 11ms 22 Aug 2024 814th AstroOrbis 468 141 10ms 15 Jul 2025 816th brandon-04 467 194 410ms 7 Nov 2025 817th gnuvince 466 49 3ms 29 Jun 2025 818th Stockoh 🇫🇷 464 142 21ms 4 Nov 2024 819th madex 🇩🇪 461 244 28ms 15 days ago 820th mousetail 🇳🇱 459 95 96ms 26 Jul 2024 821st tomh1012 459 170 9ms 15 days ago 821st rucin93 🇵🇱 459 170 25ms 14 days ago 823rd beirigo 🇧🇷 455 97 38ms 31 Jul 2024 824th adamnielson42 🇺🇸 455 145 11ms 7 Oct 2024 824th cthierfelder 🇲🇨 455 145 11ms 9 Sep 2025 826th Chinay-Domitrix 🇺🇸 455 247 29ms 14 days ago 827th cyxv 452 146 10ms 26 Jul 2024 828th tdib 449 147 11ms 12 Jan 2025 829th dokutan 448 51 9ms 26 Jul 2024 830th Shanethegamer 🇺🇸 448 94 2,158ms 8 Oct 2024 831st TaserTheFox 🇺🇸 446 148 10ms 22 Jan 2026 832nd MeWhenI 🇻🇦 442 162 7ms 29 Jul 2024 833rd 4ndyJ 🇬🇧 434 152 12ms 14 Nov 2024 834th brimstonetrader 429 208 129ms 27 Aug 2024 835th madex 🇩🇪 424 291 280ms 28 Jul 2024 836th raphaelimahorn 418 187 4ms 15 days ago 836th zakariamouhid 418 187 5ms 14 days ago 838th te-chnical 415 159 11ms 8 May 2025 839th MeWhenI 🇻🇦 415 165 168ms 29 Jul 2024 840th Shanethegamer 🇺🇸 409 67 3,517ms 16 Oct 2024 841st blaztoma 🇱🇹 409 236 74ms 23 Nov 2025 842nd erikrose100 405 123 833ms 10 Aug 2024 843rd blaztoma 🇱🇹 405 156 11ms 23 Nov 2025 844th alphafalfa 403 118 4ms 25 Oct 2024 845th zt14427 400 165 16ms 11 Feb 2025 846th MeWhenI 🇻🇦 398 106 1,216ms 27 Jul 2024 847th aaardwark 390 169 11ms 3 Jun 2025 847th wuduculfre 390 169 14ms 22 Jul 2025 849th bac0id 390 262 2,859ms 10 Jan 2025 850th Zinfour 388 170 46ms 30 Jul 2024 851st MateuszPietrzak 🇵🇱 388 263 3,065ms 31 Jul 2024 852nd damagegithub 385 265 3,017ms 14 Feb 2026 853rd Natanaelel 🇸🇪 384 88 13ms 26 Jul 2024 854th stertooy 🇧🇪 383 172 11ms 26 Jul 2024 855th muser-logiccpu 🇺🇦 379 174 11ms 25 Aug 2025 856th BREMAUCY 🇫🇷 379 297 29ms 15 days ago 857th JesseNoEyes 🇺🇸 373 177 12ms 18 Oct 2024 858th iczelia 🇩🇪 373 228 4ms 14 Oct 2025 859th Andrey2001 368 179 11ms 1 Feb 2026 860th msbranicky 367 213 14ms 15 days ago 861st KatieLG 🇬🇧 367 336 274ms 13 Oct 2024 862nd WillowWispy 366 180 12ms 23 Mar 2025 863rd BREMAUCY 🇫🇷 362 653 21ms 7 Aug 2025 864th Ashikpaul 🇮🇳 359 176 10ms 19 Oct 2024 865th bac0id 359 237 4ms 10 Jan 2025 865th madex 🇩🇪 359 237 3ms 13 Jul 2025 867th yukii1004 355 186 10ms 26 Sep 2025 868th Kokusui 🇯🇵 353 192 7ms 25 Jul 2024 869th ridilculous 346 295 2,972ms 2 Aug 2024 870th atazzam 🇺🇸 345 191 15ms 16 Jan 2025 871st KatieLG 🇬🇧 345 257 3ms 2 Oct 2025 872nd msbranicky 344 247 4ms 5 Jul 2025 873rd junkondo-jp 343 184 11ms 22 Sep 2024 874th rifatx 339 413 289ms 25 Jul 2024 875th thomastjdavis 336 145 267ms 15 Apr 2025 876th Maximizer02 336 219 12ms 25 Jul 2024 877th kmathis22 327 344 28ms 15 days ago 878th Protothor 325 240 9ms 12 days ago 879th Matter1024 🇮🇳 323 242 5ms 9 days ago 880th varhammer 317 304 9ms 9 Aug 2024 First Prev 801–880 of 951 Next Last