The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 27 hours. Why not try and solve them ahead of time?
Arabic to Roman in Python 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 401st veitkrapf 431 288 18ms 7 Oct 2021 401st GeneralFabian 431 288 30ms 14 Dec 2024 403rd ArturLange 429 289 23ms 14 Sep 2018 403rd jan-Simiman 429 289 19ms 16 Oct 2024 405th LlamaLad7 🇬🇧 428 290 24ms 17 Jan 2021 405th tayshaver10 428 290 20ms 29 Apr 2025 407th jeaosh 425 292 42ms 22 Oct 2022 407th OSYCh314 🇦🇺 425 292 19ms 16 Nov 2024 409th IoLimmer 416 298 18ms 17 Jan 2025 410th yuchuehw 412 301 25ms 28 Jan 2024 410th alfonsoalves 412 301 22ms 29 Feb 2024 410th sreyfe 412 301 22ms 23 Mar 2025 413th 2011-Chan-Ethan 408 304 17ms 17 Jul 2023 414th tpolster 405 306 19ms 9 Oct 2024 415th azierariel 403 308 21ms 20 Dec 2020 416th themtamejaws 401 309 21ms 28 May 2020 416th mrmena 🇦🇺 401 309 24ms 1 Jun 2021 418th michelebastione 🇮🇹 400 310 21ms 21 Oct 2019 419th jgermain48 399 311 18ms 9 Dec 2019 420th dyc3 397 312 38ms 27 Jul 2020 421st feherd 395 314 32ms 20 May 2022 422nd C3P-Oops 394 315 22ms 24 Jan 2023 423rd robin-scragg 384 323 25ms 3 Oct 2025 424th pecholsjones 380 326 20ms 9 Dec 2021 425th newc0m 378 328 22ms 15 Dec 2018 426th bwenstar 376 330 22ms 21 Feb 2024 426th iliaspapa 376 330 20ms 10 Dec 2025 428th hymanimy 375 331 35ms 8 Jan 2022 429th PFischbeck 373 332 18ms 28 Nov 2017 430th DrPrettyman 371 334 21ms 4 Jul 2023 431st alexjurkiewicz 🇦🇺 368 337 19ms 14 Jul 2022 432nd ImQWERTY39 365 340 19ms 2 Sep 2023 433rd fl3ur1nestimable 359 345 19ms 28 Mar 2022 434th DerivingDrunk 358 346 19ms 14 Sep 2025 435th Trunksistor 🇫🇷 354 350 24ms 23 May 2022 436th titrok0982 342 363 19ms 24 Jul 2022 437th Augigogigi 341 364 26ms 28 Jul 2020 438th leon-w 340 365 31ms 12 Jul 2019 439th AforAmpere 335 370 22ms 7 Jun 2020 439th Bit125 335 370 20ms 11 Feb 2025 441st usnheckler 330 376 21ms 6 Jun 2019 441st TheAtrossian 330 376 18ms 5 Jan 2025 443rd Saaxxx 325 382 22ms 29 Nov 2023 444th Primedavid06 322 385 17ms 5 May 2025 445th DiyaKumariGupta 319 389 20ms 6 May 2025 446th adesanjo 312 397 19ms 12 Jun 2018 447th Mikey-Beep 🇬🇧 308 402 20ms 5 Oct 2022 448th JakeSummers1 308 403 20ms 4 May 2025 449th TJK-S 306 405 19ms 30 Nov 2025 450th yvngbvshwookie 303 409 20ms 3 May 2025 451st LizzardTheWizzard 302 410 19ms 4 May 2025 452nd jsvizcaino 301 412 21ms 17 Oct 2022 453rd estomagordo 🇳🇱 300 413 19ms 5 Aug 2019 453rd mhenion8293 🇺🇸 300 413 21ms 13 Jan 2022 453rd smilesformiles3 300 413 18ms 15 Jun 2025 456th ethandhunt 300 414 28ms 20 Jul 2021 457th ValdeQwerty 288 430 26ms 27 Nov 2019 458th rcs0252 286 433 19ms 6 May 2025 459th iwe0003 285 435 18ms 6 May 2025 460th amritm55 282 439 18ms 1 May 2025 461st Martin-Regan 282 440 22ms 4 Feb 2025 462nd ShawnPan9376 280 443 21ms 30 Apr 2025 463rd Jacob385 275 451 17ms 24 Feb 2024 464th sakshiPatel2602 274 453 18ms 5 May 2025 465th MostValue 273 455 20ms 29 Aug 2023 466th kalehika1234 271 457 19ms 30 Apr 2025 467th zaironwhite 270 460 23ms 6 May 2025 468th Rowen-Salazar 268 463 18ms 3 May 2025 469th dylanjones92 245 506 33ms 29 Jan 2024 470th jac1107 244 508 18ms 6 May 2025 471st besasam 240 517 19ms 31 Mar 2021 472nd goodrichster 233 532 17ms 20 Dec 2024 472nd AshayP123 233 532 19ms 30 Apr 2025 474th chaamsak 230 539 20ms 5 May 2025 475th GolfGPT 219 567 19ms 19 Nov 2023 476th jtb0362 212 586 18ms 6 May 2025 477th cnc0256 209 592 19ms 5 May 2025 478th Kunsangrg 206 602 19ms 6 May 2025 479th aidnrox 198 626 19ms 2 May 2025 479th LyndaS317 198 626 20ms 7 May 2025 First Prev 401–480 of 508 Next Last
