The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 3 days. Why not try and solve them ahead of time?
Intersection 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 321st NanduBC 643 168 10ms 10 Apr 2021 321st ImanolCiganda 643 168 11ms 26 Feb 2026 323rd ellis-rix 639 169 12ms 25 May 2023 323rd navier-1 639 169 11ms 19 Sep 2025 325th mokymok 🇺🇸 635 170 10ms 24 Sep 2021 325th narad-muni 🇮🇳 635 170 10ms 16 May 2022 325th AbuzarN 635 170 10ms 22 Nov 2023 328th w-henderson 632 171 10ms 11 Jun 2022 329th befoster 628 172 12ms 10 Apr 2021 329th forlack 628 172 21ms 11 Nov 2021 331st adesanjo 624 173 10ms 3 Dec 2025 332nd OSYCh314 🇦🇺 617 175 17ms 16 Feb 2026 333rd rowboat1 614 176 10ms 16 Jun 2022 333rd bpharaldsson 614 176 12ms 16 Feb 2026 335th Jacob385 610 177 16ms 24 Feb 2024 336th msbranicky 607 178 11ms 12 Jul 2023 337th dgambit 600 180 43ms 7 Sep 2022 338th omero-san 590 183 11ms 19 Sep 2025 339th davidludwik2370 587 184 10ms 14 Sep 2025 340th Azearia 584 185 19ms 28 Feb 2024 341st xenufo 581 186 11ms 15 Nov 2020 341st AstroOrbis 581 186 11ms 16 Feb 2026 343rd janga1 578 187 10ms 17 Aug 2021 344th degerman 574 188 11ms 10 May 2023 344th sciencedjinn 574 188 11ms 8 Nov 2024 346th twocatsinatrenchcoat 571 189 11ms 12 May 2022 346th mdnestor 571 189 10ms 27 Dec 2022 346th JRaspass 🇬🇧 571 189 12ms 19 Feb 2026 349th martinnorling 🇸🇪 568 190 10ms 6 Apr 2022 349th Andrey2001 568 190 11ms 24 Nov 2025 351st kistlerf 🇨🇭 565 191 11ms 13 May 2025 352nd krcs 🇵🇱 557 194 10ms 18 Apr 2022 353rd sli-Lut 545 198 10ms 26 Oct 2023 354th PhysicDev 🇫🇷 540 200 10ms 27 May 2021 354th redbeancola 540 200 12ms 5 Nov 2021 356th cthierfelder 🇲🇨 532 203 717ms 6 Sep 2025 357th Protothor 529 204 11ms 22 Feb 2026 358th mothcolada 🇺🇸 514 210 1,057ms 21 Apr 2021 359th DarkTemplar5 512 211 10ms 11 Oct 2020 359th pengu1n-master 512 211 9ms 5 Feb 2022 359th cefqrn 512 211 18ms 20 Dec 2022 359th tomh1012 512 211 11ms 16 Feb 2026 363rd dillon-duncando 505 214 17ms 5 Oct 2022 364th reddeepimpact 502 215 11ms 18 Jul 2023 365th Joe0400Student 498 217 10ms 2 Nov 2021 366th tdib 495 218 27ms 12 Jan 2025 367th qwertzguy 🇫🇷 493 219 11ms 4 Feb 2024 368th kevinnaviapaiva 480 225 10ms 17 Feb 2025 369th itiievskyi 🇺🇦 478 226 43ms 4 Jan 2021 370th ComputerKWasTaken 🇺🇸 468 231 11ms 16 Sep 2024 371st chris3145 464 233 11ms 3 Aug 2022 371st yuchuehw 464 233 21ms 14 Jan 2024 373rd evanrittner 458 236 10ms 26 Feb 2021 374th Jacob-Gendelman 456 237 11ms 18 Aug 2023 375th Rosco5555 454 238 25ms 23 Jul 2022 376th dylanjones92 450 240 10ms 18 Jan 2024 376th Jonson26 450 240 11ms 23 Feb 2026 378th BrenSchaap 435 248 11ms 22 Oct 2021 379th JakeDaCake36 427 253 4,417ms 24 Feb 2024 380th joshuamkite 425 254 10ms 21 Aug 2023 381st vincentvanderbrugge 420 257 10ms 24 Oct 2020 382nd Shotokhan 417 259 11ms 19 Sep 2025 383rd BLD933 🇲🇦 412 262 11ms 7 Dec 2023 384th Zhenyu-Bo 400 270 10ms 31 Jul 2025 385th brochmann 🇸🇪 399 271 11ms 6 Feb 2022 386th NoneTheFewer 396 273 35ms 25 Dec 2025 387th andrewgopher 391 276 11ms 25 Jun 2022 388th StHagel 384 281 17ms 10 May 2021 389th atazzam 🇺🇸 351 308 11ms 10 Mar 2022 390th eli-siegel 345 313 11ms 27 Jun 2023 391st GlennHA 321 336 41ms 15 May 2021 392nd fl3ur1nestimable 314 344 11ms 3 Apr 2022 393rd Oussama-Ben-Nasr 310 348 16ms 14 Nov 2022 394th CRHillman 298 363 11ms 19 Nov 2020 395th weliveinhell 🇭🇹 297 364 11ms 18 Feb 2026 396th zt14427 292 370 1,073ms 27 Oct 2023 397th AidanWalter 271 398 11ms 3 Jan 2025 398th sayloren 134 803 11ms 30 Jul 2021 399th muser-logiccpu 🇺🇦 119 904 12ms 25 Jul 2025 First Prev 321–399 of 399
