Legal moves python chess. Created using Python Chess & PySimpleGUI.
Legal moves python chess IllegalMoveError` despite the fact that move is legal on Jan 14, 2024 niklasf added question A simple chess engine written in Python. Generating pseudo-legal moves is a lot faster than just generating legal moves because calculating checks and pins is hard. to_square: chess. This module does every task in python that is possible in the real game. I Quick introduction: In late 2020, Netflix released the Queen’s Gambit, a TV show taking place in the 1950’s where we follow the journey of a young women thriving to become the best chess player. It is in a game with a physical chess board. Hello, I am working on creating a Chess Game from scratch in Python and having trouble creating correct legal moves for chess pieces. Demo A Python program that uses a camera to detect chess moves on a physical board. What I need is to see if move Legal move generator and move validation. Jan 12, 2025 · Part 3 of building a Python Chess Engine. legal_moves object is a generator, or more specifically a LegalMoveGenerator. Given unlimited resources, it actually doesn't take many lines of code to calculate every legal variation of chess. legal_moves) or [*board. ep How to get a list of all the legal moves in the python-chess module?I am using the python chess module. Mar 20, 2023 · Given a chess board of dimension m * n. This … Features [3] Board and Moves Legal Move Generation Make Move Unmake Move Detection Attacks Check Checkmate Stalemate Draw by Insufficient Material Repetitions Creating and Parsing SAN FEN EPD PGN Probing PolyGlot Opening Book Gaviota Tablebases Syzygy Bases Protocols UCI See also aiBloodshed If Deep Blue could talk [4] Jerry libchess PicoChess Shatranj (Toolkit) Forum Posts Re: PGN to FEN cpp-chess is a chess library for C++, with move generation, move validation, and support for common formats. This is the Scholar's mate in python-chess: Feb 25, 2025 · A chess library with move generation and validation, Polyglot opening book probing, PGN reading and writing, Gaviota tablebase probing, Syzygy tablebase probing, and XBoard/UCI engine communication. This is the Scholar’s mate in python-chess: Aug 30, 2023 · I have generated pseudo-legal moves, and now need to check if they are legal. To generate moves uniformly at random, legality of all candidates has to be checked, which is not better than generating a list of all legal moves. Does anybody know if there is a free python chess moves validation function available somewhere? What I need. This is the scholars mate in python-chess: python-chess: a chess library for Python Introduction python-chess is a chess library for Python, with move generation, move validation, and support for common formats. https://pypi. ep Hi all! Im trying to get into coding (Im using java), and want to create a homemade chess engine. Currently I use the following: ucinewgame position startpos moves e2e4 b8c6 d2d4 d7d5 e4e5 go perft 1 But the problem is that stockfish only display legal moves without captures F. I’ve been diving into some chess programming lately and got really stumped on a particular challenge. I believe the fastest way of doing this is comparing the kings position to a bitboard or list of all attacked squares, Chess-v0 gym-chess defines a basic Chess-v0 environment which represents observations and actions as objects of type chess. UCI (Universal Chess Interface) format is used for moves, where you specify the starting and ending square (e. Move, respectively. Do you know such an engine that I can download or play online? I want two engines that make random legal moves play against each other a number of times and measure the average number of moves each game lasts. With tkinter Jun 24, 2021 · However, now the function to get all the legal moves doesn't seem to work and I've found that this is because for some reason it thinks it can move a pawn from a4 to a5 on the starting board and I think this could be because it doesn't change the position back to the normal position after checking a2 to a4 but does move it on the board which is . chess960,move. _stack. I also generate a list of possible, legal moves per side after each executed move, but since the check-detection uses a potential move, those lists cant be used. Generation of moves is a basic part of a chess engine with many variations concerning a generator or an iterator to loop over moves inside the search routine. Feb 1, 2021 · beginner programmer here, trying to make an app that detects blunders and wanting to learn more about the chess. If fen is None, an empty board is created. May 29, 2020 · The board. san(move) gives you the notation of the move based on the current position (see documentation). ), and keep track of the game It would be good to separate total legal moves into two - one stat that shows total legal moves to empty squares and another stat that shows total legal captures. If mat [i] [j] = 1 then the block Home * Board Representation * Move Generation * Perft Perft, (perf ormance t est, move path enumeration) a debugging function to walk the move generation tree of strictly legal moves to count all the leaf nodes of a certain depth, which can be compared to predetermined values and used to isolate bugs. Jul 1, 2022 · 3 I want to generate a random legal standard chess position. I am having trouble with the brevity of the code to generate the moves for the rooks and bishops. Observation Space ¶ The observation is a dictionary which contains an 'observation' element which is the usual RL observation described below, and an 'action_mask' which holds the legal moves, described in the Legal Dec 13, 2020 · gym-chess defines a basic Chess-v0 environment which represents observations and actions as objects of type chess. This is the scholars mate in python-chess: Feb 20, 2021 · I am interested in making a chess algorithm. Jul 18, 2022 · All chess engines calculate legal moves in some way, even with some of the easier methods you will get a chess engine that will never lose to a good human. Square, to_square: chess. I assume that using the analyse function is a discrete, self-contained Oct 30, 2022 · I'm trying to create a chess engine using python-chess, but I keep getting the error message: Nov 17, 2017 · Python-chess is great! But I have found that list (board. In particular, we uncover the latent structure of chess pieces and moves, as well as predict chess moves from chess positions. engine library. A traditional chess game developed in Python using only the PyGame module. to_square,move. move=self. The search path is used to define how deep we want to search. Board() >>> board. Features Legal move generator and move validation. _from_chess960(self. python-chess is a chess library for Python, with move generation, move validation, and support for common formats. Includes two-player mode and an AI bot using a minimax algorithm with alpha-beta pruning. legal_moves <LegalMoveGenerator at Abstract We conduct the first study of its kind to generate and evaluate vector representations for chess pieces. move_stack. Now to my question: I need to implement checks into my chess engine, and from my research, the easiest way to do this is to create a bitboard of all the opposing colors attack squares, and bitwise and that together with the opposing king's bitboard. , Q, K] --> in this instance the possible legal moves for the Rook (R) is Aug 3, 2021 · Of course, a legal or pseudo-legal move generator can provide a strong foundation for a chess engine, but once you reach the search phase, it'll generally be less work to just generate pseudo-legal moves and verify that each one is legal. Despite its age it can still be fairly challenging, even for modern chess engines. Mar 4, 2019 · The validity of the move is determined by:1-Square not occumied by own figure, 2-move doesn't expose own king to check, 3 - Move-position for this figure is valid at all, 4 - Rock and King were not moved before (rochade), 5 - King wouldn't cross the atack line of other figure (rochade), 6 - Pawn was not moved before (en passe). It can evaluate chess positions, calculate best moves, and integrate with various interfaces. Nov 23, 2022 · Creating a player that looks ahead a couple of moves and selects the move that gives the best outcome using the minmax algorithm. But the "perft As a project for learning python, I have been making a chess program. python-chess is a pure Python chess library that provides features such as move generation, validation, and support for various chess formats. this notation works for board. Aug 7, 2019 · I am working on a simple cheat detection script to find if a user used one of the top engine moves in a game, so I found this great python-chess library Additionally, I found this example to getting the moves score. py and players. """# Push move and remember board state. If the distribution does not matter, one strategy could be to generate moves only for a randomly selected piece or region of the board. For this, I will be using the python-chess library. Features ¶ Legal move generator and move validation. Visit their website for more documentation. In Python I made a bot that automatically chooses a random legal move and plays it. Introduction python-chess is a pure Python chess library with move generation and validation and handling of common formats. We need to know the basics of chess to play chess with it. The moves are grouped by the piece making the move in the order: King, Queen, Rook, Bishop, Knight, Pawn. Sep 21, 2015 · To do this I want to generate a list of legal moves. It will help us to move the king queen, pawn, bishops and knights. Utilizes Pygame to create an interactive Chess interface complete with undo feature (z key), reset feature (r key), legal move highlighting, game end screen, and dynamic piece animation. Incorporates a dialogue window to announce moves, game state and special moves. getting `chess. Chessnut is not a chess engine – it has no AI to play games, and it has no GUI. May 13, 2020 · The best way I found to check if the move captured a piece is to count all the pieces before and after the move and verify if different, but seems to me very inefficient and not elegant. for my position it is possible for the black queen to capture the pawn (d5). What I need (I think) is: - Something that gives me all valid moves (for a given player) in a given position (position represented by FEN) - Something that translate between notation and a "move" - Something that make the moves (change the FEN to have played a given move) - Something that You may be interested in python-chess if this has anything to do with chess programming. Jun 18, 2023 · A Journey into Chess Algorithms: Strategies, Optimization, and Implementation — Rami Jaloudi Chess, often hailed as the “game of kings,” has captivated players for centuries with its blend Current Features Chess Insights is in early development. Legal move generator and move validation. This library provides an extensive API of controlling the chess game. Therefore it doesn't recognise the first knight move g1f3 as legal: the knight is already on f3! I suspect that if you exchange the two lines in the loop it should work. Sneaky chess time, castling might be a legal move. About Modular Python system for generating legal chess moves from FEN input. Square ¶ The target square python-chess: a chess library for Python Introduction python-chess is a chess library for Python, with move generation, move validation, and support for common formats. For any questions or concerns please contact support@georgescoding. Here, the Python package python-chess is used for board representation and legal move generation. as a part of the program, I have been trying to figure out how to check if a move made by the bishop is a valid move or if the path is blocked by another piece. Board and chess. Sep 17, 2023 · Chess Move Generation Bitboards The foremost way to represent the chessboard is through the use of bitboards. It is designed to be simple and extensible, offering the flexibility to implement your own chess logic or use it as part of a larger project. Take the following examples: [r, p , . legal_moves Moves ¶ class chess. They are easy to work with and make precomputation much easier. FastChess provides a fast and intuitive interface for chess operations by leveraging a compiled C extension for core logic. Aug 27, 2023 · I am trying to make a chess engine without use of the python chess libraries, so I can learn more about chess programming. append(self. Moves are currently generated through A high-performance chess engine with a C backend and Python API, designed for speed and efficiency. That is, you first need to write down May 24, 2021 · What's the proper way to get the number of legal moves that a board state has? Right now I'm using sum (1 for move in board. I am having trouble on how to tac Oct 16, 2023 · Validate chess moves in Python with a ChessMoveValidator class. My problem is that I want this generation to be uniformly distributed over all legal chess positions. May 29, 2013 · I am making the game chess, and have gotten virtually everything but one thing: I need to make it so that it is impossible for a player to move a piece into check. My move generator generates an en passant Jul 21, 2019 · The above error arose when I tried to verify if my move was among the legal moves. Great for learning chess engine basics. The possible legal moves are then generated using various bitboard techniques. The implementation heavily depends on the board representation, and it can be generalized into two types, pseudo-legal and legal move generation. This post is about my experiences optimizing CeruleanJS’s move generation. Move. I am not talking about weak engines that blunder intentionally. The program processes images to recognize piece movements and updates the game state in real-time, bringing a seamless blend of physical and digital chess interaction! For the Python engine, I used python-chess to generate legal moves, play moves and undo moves. UCI/XBoard engine communication The Universal chess interface (UCI) and XBoard protocol are standards for communicating with chess engines. This is the Scholar’s mate in python-chess: Jan 8, 2021 · The pseudo-legal-moves are calculated using this file, for anyone interested. legal_moves <LegalMoveGenerator at Jul 14, 2023 · A python chessboard library for representing game positions. It is a simple package that can import/export games in Forsyth-Edwards Notation (FEN), generate a list of legal moves for the current board position, intelligently validate & apply moves (including en passant, castling, etc. chess-board What is chess-board? chess-board is a Python chessboard package with a flexible "just a board" API for graphically representing game positions. drop))self. This is the scholars mate in python-chess: Snakefish uses a bitboard approach to represent the state of the chess board and to generate possible moves. Jan 29, 2025 · For example, a pawn can move forward one square (or two on its first move), a rook can move horizontally or vertically, and a knight moves in an L - shape. g. , . e1->g1, or e1->c1). action_space = 0 b = chess. Search is performed using the negamax algorithm with a simple heuristic. A bitboard is a 64-bit … How to get a list of all the legal moves in the python-chess module?I am using the python chess module. Thus "higher" terminal This repository contains code to automatically analyze boards in chess. What chess-board is not A chess engine A legal move validator A PGN parser While chess-board is designed to work well with any of these, the idea behind chess-board is that the Apr 2, 2025 · pychess_engine - A Python Chess Engine pychess_engine is a lightweight chess engine written in Python. As an intermediate programmer I made chess engines in both Python and C# which would beat any good chess player. Would it b python-chess: a chess library for Python ¶ Introduction ¶ python-chess is a chess library for Python, with move generation, move validation, and support for common formats. # All possible moves except pawn promotions can be specified by the "from" square and the "to" square # (even castling, ex. e. ', white cells are represented by 'W', and black cells are represented by 'B'. For centuries, it’s been a favored pastime of strategists and intellects. When doing this type of action, it returns a type of er There are more possible chess games than the number of atoms in the universe. from_square,move. append(board_state)# Reset en passant square. This module implements an abstraction for playing moves and analysing positions with both kinds of engines. castling_rights=self. py. - IndieCoderMM/chess-gui Nov 14, 2020 · Finding bugs in legal move generation or make/unmake move functions (Python) by eligolf » Sun Nov 15, 2020 11:00 am Hi, I am creating an engine in Python and thought I got the generating move functions working properly along with make/unmake move functions after testing some speical cases in the human vs human game mode. I need help figuring out how to generate all the legal moves for each piece on a chessboard. It’s kind of mind-boggling to consider all the rules and nuances for each piece. The move function Nov 24, 2024 · Adding Move Validation To make the game functional, we need to validate user input and apply legal moves to the board. from_square: chess. Before we get started, please create a folder called ai in your project's root directory and in that folder add the following files: __init__. , e2e4). legal_moves Features ¶ Supports Python 2. Sep 15, 2024 · Encoding and Decoding Files with Chess PGN: A Creative Approach to Data Manipulation In the realm of data encoding and digital interactions, creativity often leads to innovative solutions. Jan 14, 2024 · HarshilPatel007 changed the title getting `chess. legal_moves <LegalMoveGenerator at May 17, 2023 · @Shorn well "e4" in chess notation would mean pawn to e4, so whichever pawn is able to move to e4 moves to e4. legal_moves <LegalMoveGenerator at We would like to show you a description here but the site won’t allow us. Built for reproducibility, testability, and open-source collaboration. We share preliminary results which anticipate our ongoing work on a neural network architecture that learns these embeddings directly from supervised feedback. This includes all castling rules and en-passant captures. I am looking for something similar in C++ (preferably header-only) , but I can't seem to find anything. This is the scholars mate in python-chess: With the new rules from July 2014 a game ends drawn (even without a claim) once a fivefold repetition occurs or if there are 75 moves without a 2-player Chess game in a beautiful GUI with legal moves highlighting. I have this little problem. Mar 13, 2021 · Hello everyone. To do this I want to generate a list of legal moves. BaseBoard python-chess: a chess library for Python Introduction python-chess is a chess library for Python, with move generation, move validation, and support for common formats. shows legal bishop moves) but there is a lot of repetition, which is not ideal. Mar 10, 2021 · I put a FEN where on the next move White can promote a pawn by moving b7a8. We would like to show you a description here but the site won’t allow us. A critical component of move generation is **check detection**: ensuring that a generated move does not leave the king in check (or, if the king Python Chess: Move generations and validations are made using this powerful chess library PySimpleGUI: Beautiful GUI is created within a few lines of code by the help of this amazing library Jun 4, 2023 · The game of chess is one of strategy, patience, and immense concentration. In perft, nodes are only counted at the end after the last makemove. These classes come from the python-chess package which implements the game logic. com and suggest the best moves. The name is a play on "Stockfish", a well known chess engine (and "snake", cause, you know, Python). This is the Scholar’s mate in python-chess: Feb 3, 2021 · board. It adheres to standard chess rules, encompassing castling, en passant, and pawn promotion mechanics. Square ¶ The target square Dec 3, 2018 · A bad move is legal but it is bad but still is a legal move. This is the scholars mate in python-chess: Introduction python-chess is a pure Python chess library with move generation and validation and handling of common formats. To complete all moves, en-passant, casting, and promotion are generated separately. Have generated a set of pseudo legal moves (- castling and en passant) and Introduction python-chess is a pure Python chess library with move generation and validation and handling of common formats. This is the Scholar's mate in cpp-chess: python-chess is a pure Python chess library with move generation and validation and handling of common formats. You can iterate over that object and it will yield something with each iteration. push_san(move) however the issue with just asking the user an input for move and immediately putting it into board. e bitboards or some variation and then secondly what methods or functions it uses to do basic things like check for checkmate. Moves ¶ class chess. Implementing these movement rules in Python involves writing functions that take the current position of the piece and return the possible new positions based on the rules. The result is a flawless game lasting hundreds of moves just to end with a draw. Functions and classes enforce all chess rules including checkmate, stalemate, en passant, promotion, and castling. You may be interested in python-chess if this has anything to do with chess programming. In the library that I currently use (and that I want to replace). , R , . Square, promotion: Optional[chess. Since it is a physical board, my idea was always once done b7a8 then present a menu in Introduction ¶ python-chess is a pure Python chess library with move generation, move validation and support for common formats. My legal move benchmark comes from "python-chess" library. I am talking about engines that make truly random moves. Check if a given position is a legal move on the chess board. com and lichess. _to_chess960(move)board_state=_BoardState(self)self. legal_moves) (which throws a TypeError). legal_moves Introduction python-chess is a pure Python chess library with move generation, move validation and support for common formats. When I move the piece I have a function that before sending it (push), see what kind of move it was (if it was a castling, or a pawn in passing), then I check if the move is the start of a pawn promotion (example b7a8 ). Drops and null moves are supported. A chess library for Python, with move generation and validation, PGN parsing and writing, Polyglot opening book reading, Gaviota tablebase probing, Syzygy tablebase probing, and UCI/XBoard engine communication - niklasf/python-chess Jul 5, 2021 · The chess module is a pure Python chess library with move generation, move validation and support for common formats. python. This is the Scholar’s mate in python-chess: Feb 9, 2024 · Let's install the python-chess library, it will be used for managing the chess board, as well as the competition. However, to make a good algorithm I need to be able to return the opposing persons legal moves even Jan 22, 2020 · The legal-moves list will store all the legal moves and return itself in the end. VIdeo. Apr 20, 2020 · Essentially what im trying to understand is two things how does stockfish represent the board i. It includes functionalities for parsing PGN, communicating with chess engines, and handling different chess variants. However, you have already changed the position before by making the move on the board. It enables two players to track their game or play against a chess AI. This is the scholars mate in python-chess: Feb 9, 2017 · When using a psuedo-legal move generator you have to check that the board is still valid after making a move, and then void the move if it was invalid — like moving the king into check in the move above. Part of a larger goal to develop a full chess engine with AI move suggestion and educational tools. The program can also be set to automatically move the pieces on the board for you. IllegalMoveError` despite the move is legal. Generates legal moves, evaluates positions, and plays using minimax. from_uci("a8a1") in board. Find it here. org/pypi/python-chess Otherwise what are you trying to achieve beyond just getting a list of legal moves? """# Push move and remember board state. Created using Python Chess & PySimpleGUI. Nov 27, 2024 · Chessnut is a simple chess board model written in Python. clean_castling_rights()# Before pushing stackself. com. Move(from_square: chess. Find all the legal moves for a specific chess piece in a specific configuration using Python code. This is the Scholar's mate in python-chess: Can you solve this real interview question? Check if Move is Legal - You are given a 0-indexed 8 x 8 grid board, where board[r][c] represents the cell (r, c) on a game board. I have a diagram stored as a string, and move candidate. Our implementation of the observation and action spaces for chess are what the AlphaZero method uses, with two small changes. legal_moves] to get a list is unnecessarily slow because generate_legal_moves () is called twice. PieceType] = None) [source] ¶ Represents a move from a square to a square and possibly the promotion piece type. Hey chess friends, I want to use stockfish commands to get a list of all possible moves for a specific position. Dec 15, 2023 · I am trying to create a scalable chess move generator in python for my chess engine. By legal I mean a chess position that can be reached from the starting position in some amount of moves. Each move in this game consists of choosing a free cell and changing it to the color you are Jan 6, 2016 · Fast move generation is key to a strong chess engine: the more moves you can generate and evaluate per second, the stronger it will be. Features Evaluate positions and calculate best moves You'll have to work out what is a legal move (in this situation it is any move that result in the King no longer being in check). At the heart of this process lies **move generation**—the ability to generate all legal moves for a given position. pychess_engine - A Python Chess Engine pychess_engine is a lightweight chess engine written in Python. Provides move generation, validation, parsing, attack generation, game end detection, and the capability to make and unmake moves. Chesslib is a simple java chess library for generating legal chess moves given a chessboard position, parse a chess game stored in PGN or FEN format and many other things. legal_moves), but that feels like a hack compared to len (board. 5 days ago · Chess engines are marvels of computational efficiency, tasked with evaluating millions of positions per second to find the best move. Jan 14, 2021 · Machine Learning and Chess How I coded my own python chess engine Photo by Jeswin Thomas on Unsplash Source Code: Github | Play against A. The board is initialized to the standard chess starting position, unless otherwise specified in the optional fen argument. The code I have pasted below works (i. " Moving into check does not appear in the bolded list of rules to ignore. Utilizes piece-square tables found from the Chess Programming Wiki. Find number of possible moves where knight can be moved on a chessboard from given position. Chess Interface and AI programmed in Python, on Pycharm. But have you ever thought about how to play, analyze, or even create your own chess engine using a Python library? Enter python-chess, the powerful and flexible chess library that lets you handle chess notations, rules, move generation, and more python-chess: a chess library for Python ¶ Introduction ¶ python-chess is a chess library for Python, with move generation, move validation, and support for common formats. However, unlike the protagonist Beth Harmon, chess isn This Python chess game, utilizing the Pygame library, offers a complete gaming experience with GUI, legal move recognition, and checkmate detection. What I need (I think) is: - Something that gives me all valid moves (for a given player) in a given position (position represented by FEN) - Something that translate between notation and a "move" - Something that make the moves (change the FEN to have played a given move) - Something that Dec 5, 2021 · Part 3 of my python programming project. Check out a sample game I (white) played against Snakefish (black): You can see the engine plays okay up until Sep 21, 2015 · I am trying to create a two player Chess game. >> chess. legal_moves Introduction ¶ python-chess is a pure Python chess library with move generation and validation and handling of common formats. push_san() is that it does not check if the move is legal or not Jan 12, 2025 · Part 3 of building a Python Chess Engine. Since the last post, I've managed to get work out the transposition tables and started creating the move ordering function. From this information I intend to derive how I can read the current positions of every piece and generate all of the legal moves possible. Jul 20, 2022 · Let Them Play Chess Building a Trivial Python Chess Game Engine with Module “Chess” ♟ Disclaimer: If you are Garry Kasparov or have worked on the IBM Deep Blue project, please kindly leave Mar 7, 2013 · It says "Output moves must obey chess rules of movement except en passant, castling, and pawn promotion. promotion,move. INTRODUCTION python-chess is a chess library for Python, with move generation, move validation, and support for common formats. PieceType] = None, drop: Optional[chess. An illegal move is a move not allowed in the rule of chess, such as moving your queen like a knight which is illegal. Here’s what it can do right now: Python-powered chess rule engine Random engine move selection from legal moves Playable game interface Play from custom positions using FEN PGN move notation and tracking Learn More python-chess is a chess library for Python, with move generation, move validation, and support for common formats. This is the Scholar’s mate in python-chess: This repository contains a Python script that calculates and displays all legal chess moves for a given board position (specified using a FEN string). legal_moves <LegalMoveGenerator at Introduction python-chess is a pure Python chess library with move generation, move validation and support for common formats. Square ¶ The source square. This is the Scholar’s mate in python-chess: >>> import chess >>> board = chess. Jul 4, 2022 · Wraps the open-source Stockfish chess engine for easy integration into python. Chess is one of the oldest studied games in AI. By combining Selenium with python-chess, stockfish and native Python threads, I was able to create a script that could automatically find and perform the best chess moves available. We can play chess with it. Jun 28, 2018 · Here is the Python script using chess I wrote to confirm it: import chess # Each chess piece moves like either a queen or a knight from one square to another square. I am able to create a list of possible moves by the pieces but I want the search to stop on the first instance of a Black or White piece. 7 and Python 3. Implement the move function for game simulation, encode move types, and filter out illegal moves. Features ¶ Supports Python 2. On the board, free cells are represented by '. May 16, 2015 · Over to Niklas… Python-chess by example: Automating the Bratko-Kopec Test Decades ago (1982) Kopec and Bratko published a systematic test for assessing the strength chess-playing programs (pdf). bfw nmdnp dyjffl daqp xdbx pzoqap anm lknmu sde wxhwdv dtck lsrysw uovb bhnb iwzdd