The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 2 days. Why not try and solve them ahead of time?
Intersection in Python 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 321st petroselo 473 167 10ms 15 Dec 2020 321st NoahBolohan 🇨🇦 473 167 10ms 9 Feb 2023 321st KatieLG-Transpiler 🇬🇧 473 167 10ms 9 Jan 2026 324th NanduBC 470 168 10ms 10 Apr 2021 324th ImanolCiganda 470 168 11ms 26 Feb 2026 326th ellis-rix 467 169 12ms 25 May 2023 326th navier-1 467 169 11ms 19 Sep 2025 328th narad-muni 🇮🇳 465 170 10ms 16 May 2022 328th AbuzarN 465 170 10ms 22 Nov 2023 330th w-henderson 462 171 10ms 11 Jun 2022 331st befoster 459 172 12ms 10 Apr 2021 331st forlack 459 172 21ms 11 Nov 2021 333rd adesanjo 457 173 10ms 3 Dec 2025 334th OSYCh314 🇦🇺 451 175 17ms 16 Feb 2026 335th rowboat1 449 176 10ms 16 Jun 2022 335th bpharaldsson 449 176 12ms 16 Feb 2026 337th msbranicky 444 178 11ms 12 Jul 2023 338th dgambit 439 180 43ms 7 Sep 2022 339th omero-san 432 183 11ms 19 Sep 2025 340th davidludwik2370 429 184 10ms 14 Sep 2025 341st Azearia 427 185 19ms 28 Feb 2024 342nd xenufo 425 186 11ms 15 Nov 2020 342nd AstroOrbis 425 186 11ms 16 Feb 2026 344th janga1 422 187 10ms 17 Aug 2021 345th degerman 420 188 11ms 10 May 2023 345th sciencedjinn 420 188 11ms 8 Nov 2024 347th twocatsinatrenchcoat 418 189 11ms 12 May 2022 347th mdnestor 418 189 10ms 27 Dec 2022 347th JRaspass 🇬🇧 418 189 12ms 19 Feb 2026 350th martinnorling 🇸🇪 416 190 10ms 6 Apr 2022 350th Andrey2001 416 190 11ms 24 Nov 2025 352nd kistlerf 🇨🇭 414 191 11ms 13 May 2025 353rd krcs 🇵🇱 407 194 10ms 18 Apr 2022 354th sli-Lut 399 198 10ms 26 Oct 2023 355th PhysicDev 🇫🇷 395 200 10ms 27 May 2021 355th redbeancola 395 200 12ms 5 Nov 2021 357th cthierfelder 🇲🇨 389 203 717ms 6 Sep 2025 358th Protothor 387 204 11ms 22 Feb 2026 359th mothcolada 🇺🇸 376 210 1,057ms 21 Apr 2021 360th DarkTemplar5 374 211 10ms 11 Oct 2020 360th pengu1n-master 374 211 9ms 5 Feb 2022 360th cefqrn 374 211 18ms 20 Dec 2022 360th tomh1012 374 211 11ms 16 Feb 2026 364th dillon-duncando 369 214 17ms 5 Oct 2022 365th reddeepimpact 367 215 11ms 18 Jul 2023 366th Joe0400Student 364 217 10ms 2 Nov 2021 367th tdib 362 218 27ms 12 Jan 2025 368th qwertzguy 🇫🇷 361 219 11ms 4 Feb 2024 369th kevinnaviapaiva 351 225 10ms 17 Feb 2025 370th itiievskyi 🇺🇦 350 226 43ms 4 Jan 2021 371st ComputerKWasTaken 🇺🇸 342 231 11ms 16 Sep 2024 372nd chris3145 339 233 11ms 3 Aug 2022 372nd yuchuehw 339 233 21ms 14 Jan 2024 374th evanrittner 335 236 10ms 26 Feb 2021 375th Jacob-Gendelman 333 237 11ms 18 Aug 2023 376th Rosco5555 332 238 25ms 23 Jul 2022 377th dylanjones92 329 240 10ms 18 Jan 2024 377th Jonson26 329 240 11ms 23 Feb 2026 379th BrenSchaap 319 248 11ms 22 Oct 2021 380th joshuamkite 311 254 10ms 21 Aug 2023 381st vincentvanderbrugge 307 257 10ms 24 Oct 2020 382nd Shotokhan 305 259 11ms 19 Sep 2025 383rd BLD933 🇲🇦 302 262 11ms 7 Dec 2023 384th Zhenyu-Bo 293 270 10ms 31 Jul 2025 385th brochmann 🇸🇪 292 271 11ms 6 Feb 2022 386th NoneTheFewer 289 273 35ms 25 Dec 2025 387th andrewgopher 286 276 11ms 25 Jun 2022 388th StHagel 281 281 17ms 10 May 2021 389th atazzam 🇺🇸 256 308 11ms 10 Mar 2022 390th eli-siegel 252 313 11ms 27 Jun 2023 391st GlennHA 235 336 41ms 15 May 2021 392nd fl3ur1nestimable 230 344 11ms 3 Apr 2022 393rd Oussama-Ben-Nasr 227 348 16ms 14 Nov 2022 394th CRHillman 218 363 11ms 19 Nov 2020 395th weliveinhell 🇭🇹 217 364 11ms 18 Feb 2026 396th zt14427 214 370 1,073ms 27 Oct 2023 397th AidanWalter 198 398 11ms 3 Jan 2025 398th sayloren 98 803 11ms 30 Jul 2021 399th muser-logiccpu 🇺🇦 87 904 12ms 25 Jul 2025 First Prev 321–399 of 399
